Kitagawa PLS Series User manual

WorkGripper
・This instructionmanual is for production engineers and
maintenancepersonnelinchargeofoperationofthisproduct.
Whenabeginnerusesthisproduct,receiveinstructionsfrom
experiencedpersonnel,thedistributororourcompany.
・Before installing, operating or maintainingthis equipment,
carefully read this manual and the safety labels attached to
theequipment.Failuretofollowtheseinstructionsandsafety
precautions could result in serious injury, death, or property
damage.
・Storethismanualnearequipmentforfuturereference.
・If any questions related to safetyarise about this manual,
pleaseconfirmthemwiththedistributororourcompany.
INSTRUCTIONMANUAL
PLS 
type
Version 1.10 (2023.04.12)
Original instructions
DANGER
77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan
Te l .[phone]
Fax.[phone]
KitagawaCorporation
■ JAPAN DOMESTIC
■ OVERSEAS
Tokyooffice
Sendaioffice
Nagoyaoffice
Osakaoffice
Hiroshimaoffice
Kyushuoffice
Overseasoffice
TheproductshereinarecontrolledunderJapaneseForeignExchangeandForeignTradeControlAct.Intheeventofimportingand/orexportingtheproducts,
youareobligedtoconsultKITAGAWAaswellasyourgovernmentfortherelatedregulationpriortoanytransaction.
Kitagawa Corporation KitagawaGlobalhandCompany
77 - 1 ,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan Tel.[phone] Fax.[phone]
I2023.05.200
1-405-1,Kita-ku,Yosino-cho,Saitama-shi,Saitama,331-9634,Japan
4-15-13,Yamatomachi,Wakabayashi-ku,Sendai-shi,Miyagi,984-0042,Japan
2-62,Kamitakabata,Nakagawa-ku,Nagoya-shi,Aichi,454-0873,Japan
3-2-9,Kitakagaya,Suminoe-ku,Osaka-shi,Osaka,559-0011,Japan
77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan
7-6-39,Itazuke,Hakata-ku,Fukuoka-shi,Fukuoka,812-0888,Japan
77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan
Tel.[phone]
Tel.[phone]
Tel.[phone]
Tel.[phone]
Tel.[phone]
Tel.[phone]
Tel.[phone]
Fax.[phone]
Fax.[phone]
Fax.[phone]
Fax.[phone]
Fax.[phone]
Fax.[phone]
Fax.[phone]
https://www.kitagawa.com.cn
https://www.kiw.co.jp
https://www.kitagawa.com
KITAGAWA-NORTHTECHINC.
KITAGAWAEUROPELTD.
KITAGAWAEUROPEGmbH
KITAGAWAEUROPEGmbHPolandOffice
KITAGAWAEUROPEGmbHCzechOffice
KITAGAWAEUROPEGmbHRomaniaOffice
KITAGAWAEUROPEGmbHHungaryOffice
KITAGAWAINDIAPVTLTD.
KITAGAWA(THAILAND)CO.,LTD.BangkokBranch
KitagawaCorporation(Shanghai)
KitagawaCorporation(Shanghai)GuangzhouOffice
DEAMARKLIMITED
KITAGAWAKOREAAGENTCO.,LTD.
DIMACTOOLINGPTY.LTD.
Tel.[phone]
Tel.[phone]
Tel.[phone]
Tel.[phone]
Tel.[phone]
Tel.[phone]
Tel.[phone]
Tel.[phone]
Tel.[phone]
Tel.[phone]
Tel.[phone]
Tel.[phone]
Tel.[phone]
Tel.[phone]
Fax.[phone]
Fax.[phone]
Fax.[phone]
Fax.[phone]
Fax.[phone]
Fax.[phone]
Fax.[phone]
Fax.[phone]
Fax.[phone]
AmericaContact
EuropeContact
AsiaContact
OceaniaContact
https://www.kitagawa-usa.com
https://www.kitagawa.global/en
https://www.kitagawa.global/de
https://www.kitagawa.global/pl
https://www.kitagawa.global/cz
https://www.kitagawa.global/ro
https://www.kitagawa.global/hu
https://www.kitagawa.global/in
https://www.smri.asia/jp/kitagawa
https://www.kitagawa.com.cn
https://www.deamark.com.tw
http://www.kitagawa.co.kr
https://www.dimac.com.au

1
2
Thismanualprovidesdetailedinformationabouthowtosafelyandcorrectlyusetheworkgripper(PLStype).
Beforestartingtousethisworkgripper,readthismanualcarefullyandalwaysfollowtheinstructionsandwarningsin
"ImportantSafetyPrecautions"and"PrecautionsforUse"atbeginningofthemanual.Failuretofollowthese
precautionscouldresultinaseriousaccident.
Inthismanual,precautionsforhandlingthatareconsideredespeciallyimportantareclassifiedanddisplayedasshownbelow
dependingonthedamageofriskincludingtheseriousnessoftheharmthatcouldresult.Pleasesufficientlyunderstandthe
meaningsofthesetermsandfollowtheinstructionsforsafeoperation.
Thetriangleisthesafetyalertsymbolusedtoalertyoutopotentialsafetyhazardsthatcouldresultininjuryordeath.
SafetyAlertSymbol
Preface
TermsandSymbolsUsedforSafetyMessages
Thisproductissuitableforgrippingaworkpieceontherotarytablesormachiningcenters.Thisproductisequippedwith
thejawstoclamptheworkpieceandtheyoperatebymeansofabuilt-incylinder.Foranyotherapplications,please
contactus.
Ourcompany will not assume responsibility for injury, death, damage, or loss resulting from not following the
instructionsinthismanual.
Therearecountlessthingsthatcannotorshouldnotbedone,anditisimpossibletocoveralloftheminthismanual.
Therefore,donotperformany actionsunlesstheyarespecifically allowed inthismanual.Ifany questions relatedto
safetyariseaboutoperation,control,inspectionandmaintenancewhicharenotspecifiedinthismanual,pleaseconfirm
themwithourcompanyordistributorbeforeperformingthem.
LiabilityandHowtoUsethisManual
Theguaranteeperiodofthisproductis1yearafterdelivery.
Use the parts delivered by Kitagawa Corporation for all the parts including consumable parts. We will not assume
responsibilityforinjury,death,damage,orlosscausedbyusageofpartsnotmanufacturedbyKitagawaCorporation.
Additionally,ifpartsotherthangenuinepartsmanufacturedbyKitagawaCorporationareused,thisguaranteewillbe
completelyinvalid.
GuaranteeandLimitationofLiability
Indicatesahazardoussituationwhich,ifyounotavoided,
willresultindeathorseriousinjury.
Indicatesahazardoussituationwhich,ifyounotavoided,
couldresultindeathorseriousinjury.
Indicatesahazardoussituationwhich,ifyounotavoided,
couldresultinminorormoderateinjury.
Indicatesinstructionswhich,ifnotavoided,couldresultin
damagetotheequipmentorashortenedworklife.
DANGER
WARNING
CAUTION
NOTICE
TableofContents
1.StructuralDrawingandPartsList
1-1.Typedisplay
1-2.Structuraldrawing
1-3.Scopeofproduct
1-4.Partslist
2. ImportantSafetyPrecautions
3.Specifications
3-1.Specifications
3-2.Relationshipbetweenpressureandgrippingforce
4.FormingSoftJaw
4-1.Attachmentofjaw
4-2.Formingsoftjaw
5.Usage
5-1.Precautionsduringgrippingworkwithworkgripper
5-2.Precautionsduringgrippingworkinirregularshape
5-3.Precautionsrelatedtousageofjaw
5-4.Precautionsrelatedtoprocessing
5-5.Attachmentoflocatorandjig
5-6.Precautionsrelatedtousageoflockvalveunit
6.MaintenanceandInspection
6-1.PeriodicInspection
6-2.Greaselubrication
6-3.Disassembling
6-4.Inspectionoflockvalveunit
7.MalfunctionandCountermeasures
7-1.Inthecaseofmalfunction
7-2.Wheretocontactinthecaseofmalfunction
ForMachineToolManufacturers(Chapter8)
8.Attachment
8-1.Airpiping
8-2.Attachmentoflockvalveunit
8-3.Oilpiping
9.TrialOperation
10.OtherInformation
10-1.Aboutstandardsandorders
10-2.Informationaboutmarkingsofproduct
10-3.Aboutdisposal
……………………………………………………………… 3
………………………………………………………  8
…………………………………………………………………………………… 13
……………………………………………………………………………… 15
…………………………………………………………………………………………… 17
………………………………………………………………… 20
…………………………………………………………… 23
……………………………………………………………………………………… 24
………………………………………………………………………………… 27
……………………………………………………………………………… 28

1
2
Thismanualprovidesdetailedinformationabouthowtosafelyandcorrectlyusetheworkgripper(PLStype).
Beforestartingtousethisworkgripper,readthismanualcarefullyandalwaysfollowtheinstructionsandwarningsin
"ImportantSafetyPrecautions"and"PrecautionsforUse"atbeginningofthemanual.Failuretofollowthese
precautionscouldresultinaseriousaccident.
Inthismanual,precautionsforhandlingthatareconsideredespeciallyimportantareclassifiedanddisplayedasshownbelow
dependingonthedamageofriskincludingtheseriousnessoftheharmthatcouldresult.Pleasesufficientlyunderstandthe
meaningsofthesetermsandfollowtheinstructionsforsafeoperation.
Thetriangleisthesafetyalertsymbolusedtoalertyoutopotentialsafetyhazardsthatcouldresultininjuryordeath.
SafetyAlertSymbol
Preface
TermsandSymbolsUsedforSafetyMessages
Thisproductissuitableforgrippingaworkpieceontherotarytablesormachiningcenters.Thisproductisequippedwith
thejawstoclamptheworkpieceandtheyoperatebymeansofabuilt-incylinder.Foranyotherapplications,please
contactus.
Ourcompany will not assume responsibility for injury, death, damage, or loss resulting from not following the
instructionsinthismanual.
Therearecountlessthingsthatcannotorshouldnotbedone,anditisimpossibletocoveralloftheminthismanual.
Therefore,donotperformany actionsunlesstheyarespecifically allowed inthismanual.Ifany questions relatedto
safetyariseaboutoperation,control,inspectionandmaintenancewhicharenotspecifiedinthismanual,pleaseconfirm
themwithourcompanyordistributorbeforeperformingthem.
LiabilityandHowtoUsethisManual
Theguaranteeperiodofthisproductis1yearafterdelivery.
Use the parts delivered by Kitagawa Corporation for all the parts including consumable parts. We will not assume
responsibilityforinjury,death,damage,orlosscausedbyusageofpartsnotmanufacturedbyKitagawaCorporation.
Additionally,ifpartsotherthangenuinepartsmanufacturedbyKitagawaCorporationareused,thisguaranteewillbe
completelyinvalid.
GuaranteeandLimitationofLiability
Indicatesahazardoussituationwhich,ifyounotavoided,
willresultindeathorseriousinjury.
Indicatesahazardoussituationwhich,ifyounotavoided,
couldresultindeathorseriousinjury.
Indicatesahazardoussituationwhich,ifyounotavoided,
couldresultinminorormoderateinjury.
Indicatesinstructionswhich,ifnotavoided,couldresultin
damagetotheequipmentorashortenedworklife.
DANGER
WARNING
CAUTION
NOTICE
TableofContents
1.StructuralDrawingandPartsList
1-1.Typedisplay
1-2.Structuraldrawing
1-3.Scopeofproduct
1-4.Partslist
2. ImportantSafetyPrecautions
3.Specifications
3-1.Specifications
3-2.Relationshipbetweenpressureandgrippingforce
4.FormingSoftJaw
4-1.Attachmentofjaw
4-2.Formingsoftjaw
5.Usage
5-1.Precautionsduringgrippingworkwithworkgripper
5-2.Precautionsduringgrippingworkinirregularshape
5-3.Precautionsrelatedtousageofjaw
5-4.Precautionsrelatedtoprocessing
5-5.Attachmentoflocatorandjig
5-6.Precautionsrelatedtousageoflockvalveunit
6.MaintenanceandInspection
6-1.PeriodicInspection
6-2.Greaselubrication
6-3.Disassembling
6-4.Inspectionoflockvalveunit
7.MalfunctionandCountermeasures
7-1.Inthecaseofmalfunction
7-2.Wheretocontactinthecaseofmalfunction
ForMachineToolManufacturers(Chapter8)
8.Attachment
8-1.Airpiping
8-2.Attachmentoflockvalveunit
8-3.Oilpiping
9.TrialOperation
10.OtherInformation
10-1.Aboutstandardsandorders
10-2.Informationaboutmarkingsofproduct
10-3.Aboutdisposal
……………………………………………………………… 3
………………………………………………………  8
…………………………………………………………………………………… 13
……………………………………………………………………………… 15
…………………………………………………………………………………………… 17
………………………………………………………………… 20
…………………………………………………………… 23
……………………………………………………………………………………… 24
………………………………………………………………………………… 27
……………………………………………………………………………… 28

3
4
Typedisplayasshownbelow
1 − 1 Typedisplay
1
− 2 Structuraldrawing
Fig.1
Fig.2
1.StructuralDrawingandPartsList
PLS 04-999
DesignNo.
（Inch）
Nominaldiameter
Thisinstruction manual isfor the workgripper. Other thaninformation aboutthe work gripper,it is mentionedabout
optionalarticle(Alockvalveunit).
1 − 3 Scopeofproduct
Fig.3
・To prevent the work from flying, safe design, maintenance and erroneous action prevention of the pneumatic
systemtomaintainthegrippingforceoftheworkgripperisextremelyimportant.ThoroughlyreadtheImportant
SafetyPrecautionsonandafterpage8inthismanual.
・Asfortheotherpneumaticproducts,followtheinstructionmanualfortheseproducts.
（Softjaw.hardjaw.
specialjawincluded）
Body Plunger
Cover
Blockorlockvalve
unit（Option）
Topjaw
Masterjaw
Piston
Flange
Cylinder
cover
Workgripper
Workgripper
OUT IN
Waterdrainhandle
Airpressuregauge
Lockvalveunit
Manualswitching
valveor
solenoidvalve Airhose
Airpressure
adjustinghandle
Aircontrolunit
Lockvalveunit
Manualswitchingvalve
(AV-02F)
WARNING
PLSseries

3
4
Typedisplayasshownbelow
1 − 1 Typedisplay
1
− 2 Structuraldrawing
Fig.1
Fig.2
1.StructuralDrawingandPartsList
PLS 04-999
DesignNo.
（Inch）
Nominaldiameter
Thisinstruction manual isfor the workgripper. Other thaninformation aboutthe work gripper,it is mentionedabout
optionalarticle(Alockvalveunit).
1 − 3 Scopeofproduct
Fig.3
・To prevent the work from flying, safe design, maintenance and erroneous action prevention of the pneumatic
systemtomaintainthegrippingforceoftheworkgripperisextremelyimportant.ThoroughlyreadtheImportant
SafetyPrecautionsonandafterpage8inthismanual.
・Asfortheotherpneumaticproducts,followtheinstructionmanualfortheseproducts.
（Softjaw.hardjaw.
specialjawincluded）
Body Plunger
Cover
Blockorlockvalve
unit（Option）
Topjaw
Masterjaw
Piston
Flange
Cylinder
cover
Workgripper
Workgripper
OUT IN
Waterdrainhandle
Airpressuregauge
Lockvalveunit
Manualswitching
valveor
solenoidvalve Airhose
Airpressure
adjustinghandle
Aircontrolunit
Lockvalveunit
Manualswitchingvalve
(AV-02F)
WARNING
PLSseries

5
6
1 − 4 Partslist
Fig.4
Table1
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
23
24
25
26
27
28
29
30
31
32
33
No.
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
Quantity
1
1
1
1
1
3
3
1
1
3
4
1
1
3
2
5or8
6
Partname
No. Partname PLS04 PLS06 PLS08
Partname
Body
Flange
Piston
Plunger
Cylindercover
Masterjaw
Softjaw
Cover
Block
PlugC
PlugD
ParallelPin
RetainingRing
Jawattachingbolt
Socketheadcapscrew
Socketheadcapscrew
Socketheadcapscrew
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
JIS2041P7
JIS2041P16
JIS2041P11
JIS2041P9
NOKS7
JASO3080
JIS2041P24
JASO2028
JIS2041G80
NOKS18
NOKS80
JIS2041P7
JIS2041P26
JIS2041P22
JIS2041P10
JIS2041P7
JIS2041G135
JIS2041G40
JIS2041G35
NOKS135
JIS2041S30
NOKS135
JIS2041P7
JIS2041P34
JIS2041G35
JIS2041P10
JIS2041P7
JIS2041G175
JIS2041G55
JIS2041G55
AS568-262
NOKS46
AS568-262
Setscrew
Socketheadbuttonscrew
Greasenipple
Orificeplug
Parallelpin
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
Quantity
1
3
1
1
1
3
3
1
6
1
1
1
1
1
1
1
Table2 Consumableparts
1
2
3
4
5
6
7
82
0
17
9
10
15
23
11 2731 28
33
26
13 32 29
24
21
16
30
25
18
22
11
12
19
14

5
6
1 − 4 Partslist
Fig.4
Table1
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
23
24
25
26
27
28
29
30
31
32
33
No.
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
Quantity
1
1
1
1
1
3
3
1
1
3
4
1
1
3
2
5or8
6
Partname
No. Partname PLS04 PLS06 PLS08
Partname
Body
Flange
Piston
Plunger
Cylindercover
Masterjaw
Softjaw
Cover
Block
PlugC
PlugD
ParallelPin
RetainingRing
Jawattachingbolt
Socketheadcapscrew
Socketheadcapscrew
Socketheadcapscrew
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
JIS2041P7
JIS2041P16
JIS2041P11
JIS2041P9
NOKS7
JASO3080
JIS2041P24
JASO2028
JIS2041G80
NOKS18
NOKS80
JIS2041P7
JIS2041P26
JIS2041P22
JIS2041P10
JIS2041P7
JIS2041G135
JIS2041G40
JIS2041G35
NOKS135
JIS2041S30
NOKS135
JIS2041P7
JIS2041P34
JIS2041G35
JIS2041P10
JIS2041P7
JIS2041G175
JIS2041G55
JIS2041G55
AS568-262
NOKS46
AS568-262
Setscrew
Socketheadbuttonscrew
Greasenipple
Orificeplug
Parallelpin
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
O-ring
Quantity
1
3
1
1
1
3
3
1
6
1
1
1
1
1
1
1
Table2 Consumableparts
1
2
3
4
5
6
7
820
17
9
10
15
23
11 2731 28
33
26
13 32 29
24
21
16
30
25
18
22
11
12
19
14

Importantsafetyprecautionsaresummarizedbelow.Pleasereadthissectionbeforefirststartingtousethisproduct.
2. ImportantSafetyPrecautions
Failuretofollowthesafetyprecautionsbelowwillresultin
seriousinjuryordeath.
DANGER
Turnoffmainpowersupplybeforeattaching,inspectingorreplacingworkgripper,
andbeforeaddingoil.
・The machine tool may start rotation
suddenly, andapart of the body or
clothingmaybecaught.
Closedoorbeforemachining.
・If the door is not closed, you may touch
thetools or the work gripper, or the work
may fly out, which is very dangerous. (In
general,thesafetyinterlockfunctionwhich
allows machining only when the door is
themanualmodeorthetestmode)
Duringmachining,donotoperateswitchingvalve.
・Thisisdangerousastheworkwillfly
out.
Fig.5Lockvalveunit
Table3
No.
41
42
43
44
45
46
47
48
49
50
No.
51
52
53
54
55
56
57
58
59
60
Quantity
1
2
2
1
2
2
2
1
1
1
Partname Partname
Block
Sealwasher
Capscrew
Cap
Spring
Ballφ8
Valveseat
Housing
Pilotspool
Ring
Plug
O-ringJASO1015
O-ringJASO1016
O-ringJASO1017
O-ringJISB2401P9
O-ringJASO1014
O-ringJASO1021
Hex.key5
CapscrewM6×50
Airpressuregauge
Quantity
1
1
1
1
1
1
1
1
2
1
7
8
ForAllUsers
ForAllUsers
ForAllUsers
44 52 53 55 54 56 57
514547504948 4647
41
42
43
45
46
OFF
Switchingvalve

Importantsafetyprecautionsaresummarizedbelow.Pleasereadthissectionbeforefirststartingtousethisproduct.
2. ImportantSafetyPrecautions
Failuretofollowthesafetyprecautionsbelowwillresultin
seriousinjuryordeath.
DANGER
Turnoffmainpowersupplybeforeattaching,inspectingorreplacingworkgripper,
andbeforeaddingoil.
・The machine tool may start rotation
suddenly, andapart of the body or
clothingmaybecaught.
Closedoorbeforemachining.
・If the door is not closed, you may touch
thetools or the work gripper, or the work
may fly out, which is very dangerous. (In
general,thesafetyinterlockfunctionwhich
allows machining only when the door is
themanualmodeorthetestmode)
Duringmachining,donotoperateswitchingvalve.
・Thisisdangerousastheworkwillfly
out.
Fig.5Lockvalveunit
Table3
No.
41
42
43
44
45
46
47
48
49
50
No.
51
52
53
54
55
56
57
58
59
60
Quantity
1
2
2
1
2
2
2
1
1
1
Partname Partname
Block
Sealwasher
Capscrew
Cap
Spring
Ballφ8
Valveseat
Housing
Pilotspool
Ring
Plug
O-ringJASO1015
O-ringJASO1016
O-ringJASO1017
O-ringJISB2401P9
O-ringJASO1014
O-ringJASO1021
Hex.key5
CapscrewM6×50
Airpressuregauge
Quantity
1
1
1
1
1
1
1
1
2
1
7
8
ForAllUsers
ForAllUsers
ForAllUsers
44 52 53 55 54 56 57
514547504948 4647
41
42
43
45
46
OFF
Switchingvalve

Alwaystightentheboltsatthespecifiedtorque.Ifthetorqueisinsufficient
orexcessive,theboltwillbreak,whichisdangerousasthe
workgripperorworkwillflyout.Usetheboltsattachedto
theworkgripper,anddonotuseboltsotherthanthese.
・Iftheprotrusionislong,thetipoftheworkcanturnandtheworkflyout.
・Grippingforceisshortbycentrifugalforce,ortheworkgrippermaybreakandtheworkgripperor
workcouldflyout.
Whentheprotrusionoftheworkislong,
supportitwiththesteadyrestorcenter.
Donotusetheworkgripperonthelathe.
・Tighteningtorqueismomentofforcewhenyoutightenabolt.
Tighteningtorque=F×L.
9
10
10
ForAllUsers
ForAllUsers
ForAllUsers
ImportantSafetyPrecautions
・Ifthepneumaticpressuresuddenlydropsduetoblackoutormalfunction,etc.,thisisdangerousas
workwillflyout.
・Lock valve retains the pneumatic pressure inside the cylinder temporarily, when the pneumatic
pressuresuddenlydropsduetoblackoutormalfunction,etc. Weprepareforthelockvalveunitfor
exclusiveuseoftheworkgripperoptionally.
・If the torque is insufficient or excessive,
theboltwillbreak,whichis dangerousas
theworkgripperorworkwillflyout.
・Fix the lathe spindle or the work gripper
when you tighten bolts. Your hand could
slipandgetinjurywhenyou workwithout
fixingthespindle.
・You cannot control the torque by a hex
key. You must use a torque wrench for
torquecontrol.
Specifiedtorquefor
socketheadcapscrew
Boltsize Tighteningtorque
M5
M6
M8
M10
M12
M14
M16
M20
M22
7.5N・m
13N・m
33N・m
73N・m
107N・m
171N・m
250N・m
402N・m
539N・m
Tighteningtorque
Ｔ=Ｆ×Ｌ
=127×0.1
=12.7(N・m)
Ｌ=0.1(m)
Ｆ=127(N)
(13kgf)
Failuretofollowthesafetyprecautionsbelowcouldresultin
seriousinjuryordeath.
WARNING
Failuretofollowthesafetyprecautionsbelowwillresultin
seriousinjuryordeath.
DANGER
Usealockvalve(safetyvalve,checkvalve)incorporatedincaseofsuddenpneumatic
pressuredropduetoblackout,malfunction,etc.Further,useasolenoidvalvewitha
circuitthatretainsthegrippingpositionwhen
nocurrentiscarried.(Refertopage19)
ForMachineToolManufactures

Alwaystightentheboltsatthespecifiedtorque.Ifthetorqueisinsufficient
orexcessive,theboltwillbreak,whichisdangerousasthe
workgripperorworkwillflyout.Usetheboltsattachedto
theworkgripper,anddonotuseboltsotherthanthese.
・Iftheprotrusionislong,thetipoftheworkcanturnandtheworkflyout.
・Grippingforceisshortbycentrifugalforce,ortheworkgrippermaybreakandtheworkgripperor
workcouldflyout.
Whentheprotrusionoftheworkislong,
supportitwiththesteadyrestorcenter.
Donotusetheworkgripperonthelathe.
・Tighteningtorqueismomentofforcewhenyoutightenabolt.
Tighteningtorque=F×L.
9
10
10
ForAllUsers
ForAllUsers
ForAllUsers
ImportantSafetyPrecautions
・Ifthepneumaticpressuresuddenlydropsduetoblackoutormalfunction,etc.,thisisdangerousas
workwillflyout.
・Lock valve retains the pneumatic pressure inside the cylinder temporarily, when the pneumatic
pressuresuddenlydropsduetoblackoutormalfunction,etc. Weprepareforthelockvalveunitfor
exclusiveuseoftheworkgripperoptionally.
・If the torque is insufficient or excessive,
theboltwillbreak,whichis dangerousas
theworkgripperorworkwillflyout.
・Fix the lathe spindle or the work gripper
when you tighten bolts. Your hand could
slipandgetinjurywhenyou workwithout
fixingthespindle.
・You cannot control the torque by a hex
key. You must use a torque wrench for
torquecontrol.
Specifiedtorquefor
socketheadcapscrew
Boltsize Tighteningtorque
M5
M6
M8
M10
M12
M14
M16
M20
M22
7.5N・m
13N・m
33N・m
73N・m
107N・m
171N・m
250N・m
402N・m
539N・m
Tighteningtorque
Ｔ=Ｆ×Ｌ
=127×0.1
=12.7(N・m)
Ｌ=0.1(m)
Ｆ=127(N)
(13kgf)
Failuretofollowthesafetyprecautionsbelowcouldresultin
seriousinjuryordeath.
WARNING
Failuretofollowthesafetyprecautionsbelowwillresultin
seriousinjuryordeath.
DANGER
Usealockvalve(safetyvalve,checkvalve)incorporatedincaseofsuddenpneumatic
pressuredropduetoblackout,malfunction,etc.Further,useasolenoidvalvewitha
circuitthatretainsthegrippingpositionwhen
nocurrentiscarried.(Refertopage19)
ForMachineToolManufactures

11
10
12
・The work gripper will break and the work
gripperandworkwillbreakandflyout.
Determinethegrippingforcerequiredforprocessingbythemachinetool
manufactureroruser,andcheckthattherequiredgrippingforce
isprovidedbeforeprocessing. (Refertopages13-14)
・Adjust the pneumatic pressure to obtain the required gripping force. If the gripping force is
insufficient,thisisdangerousastheworkwillflyout.Adjustthesteeringwheelofthereducingvalve,
andsetittoprescribedpressure.Afterwards,tightenthelocknut,andpreventthesettingpressure
fromcarelesslychanging.
ForAllUsers
Alwaysfilllubricatorwithoiluptoproperlevel.Periodicallydrainwaterinthefilter.
(Refertoeachinstructionmanualforthedetails.)
・Rustmayoccurinthecylinder,theworkscattersduetothedefectiveoperationandthedecreaseof
thegrippingforce,anditisdangerous.
ForAllUsers
NO
Work
Soft
jaw
Height
Donotmodifytheworkgripperinawaynotpermittedbythe
manufacturer.
・Itmaynotonlybreaktheworkgripperbut
theworkgripperandtheworkmayflyout,
whichisdangerous.
・If you attach a locator or jig on the work
gripperbodysurface,onlyprocessworkin
an acceptable range (Refer to pages 18-
19).
ForAllUsers
・Insufficient greasesupply lowers the
gripping force, causes operation failure
due tolowerhydraulic pressure,lowers
thegripping precision, and causes
abnormalwearingandseizing,etc.
・Thisisdangerousastheworkcouldflyout
fromadropinthegrippingforce.
Periodicallysupplyadequategrease(Refertopage20).
Turnoffpowerbeforeaddinggrease.
Greasegun
Greasenipple
ForAllUsers
・Dangerous since these
lead to operation mistakes
andmisjudgment.
・Dangeroussinceit will
becaught.
Donotoperatethemachineafter
drinkingalcoholor
takingmedication.
Donotoperatethemachinewearinggloves,
anecktie,andotherloose
clothingorjewelry.
Alcohol Medication
ForAllUsersForAllUsers
Donotgripachuckwithachuck.
・Because it is easy to confuse the
specificationsofeachworkgripperandthe
protrusionbecomelong and isaptto
exceed the specifications, it is aptto
exceed the specifications of the base
chuck. The work gripper may break and
theworkgripperorworkcouldflyout.
ForAllUsers
Failuretofollowthesafetyprecautionsbelowcouldresultin
seriousinjuryordeath.
WARNING
Useneitherjawthatistallerjawthanstandardjaw.Theairpressuremustnot
exceedthemaximumairpressure,andtheoilpressuremustnot
exceedthemaximumoilpressure. (Refertopages13-14) ForAllUsers
Failuretofollowthesafetyprecautionsbelowcouldresultin
seriousinjuryordeath.
WARNING
ImportantSafetyPrecautions

11
10
12
・The work gripper will break and the work
gripperandworkwillbreakandflyout.
Determinethegrippingforcerequiredforprocessingbythemachinetool
manufactureroruser,andcheckthattherequiredgrippingforce
isprovidedbeforeprocessing. (Refertopages13-14)
・Adjust the pneumatic pressure to obtain the required gripping force. If the gripping force is
insufficient,thisisdangerousastheworkwillflyout.Adjustthesteeringwheelofthereducingvalve,
andsetittoprescribedpressure.Afterwards,tightenthelocknut,andpreventthesettingpressure
fromcarelesslychanging.
ForAllUsers
Alwaysfilllubricatorwithoiluptoproperlevel.Periodicallydrainwaterinthefilter.
(Refertoeachinstructionmanualforthedetails.)
・Rustmayoccurinthecylinder,theworkscattersduetothedefectiveoperationandthedecreaseof
thegrippingforce,anditisdangerous.
ForAllUsers
NO
Work
Soft
jaw
Height
Donotmodifytheworkgripperinawaynotpermittedbythe
manufacturer.
・Itmaynotonlybreaktheworkgripperbut
theworkgripperandtheworkmayflyout,
whichisdangerous.
・If you attach a locator or jig on the work
gripperbodysurface,onlyprocessworkin
an acceptable range (Refer to pages 18-
19).
ForAllUsers
・Insufficient greasesupply lowers the
gripping force, causes operation failure
due tolowerhydraulic pressure,lowers
thegripping precision, and causes
abnormalwearingandseizing,etc.
・Thisisdangerousastheworkcouldflyout
fromadropinthegrippingforce.
Periodicallysupplyadequategrease(Refertopage20).
Turnoffpowerbeforeaddinggrease.
Greasegun
Greasenipple
ForAllUsers
・Dangerous since these
lead to operation mistakes
andmisjudgment.
・Dangeroussinceit will
becaught.
Donotoperatethemachineafter
drinkingalcoholor
takingmedication.
Donotoperatethemachinewearinggloves,
anecktie,andotherloose
clothingorjewelry.
Alcohol Medication
ForAllUsersForAllUsers
Donotgripachuckwithachuck.
・Because it is easy to confuse the
specificationsofeachworkgripperandthe
protrusionbecomelong and isaptto
exceed the specifications, it is aptto
exceed the specifications of the base
chuck. The work gripper may break and
theworkgripperorworkcouldflyout.
ForAllUsers
Failuretofollowthesafetyprecautionsbelowcouldresultin
seriousinjuryordeath.
WARNING
Useneitherjawthatistallerjawthanstandardjaw.Theairpressuremustnot
exceedthemaximumairpressure,andtheoilpressuremustnot
exceedthemaximumoilpressure. (Refertopages13-14) ForAllUsers
Failuretofollowthesafetyprecautionsbelowcouldresultin
seriousinjuryordeath.
WARNING
ImportantSafetyPrecautions

13
14
Plungerstroke
Jawstroke（indiameter）
Grippingforce
(Airpressure:0.6MPa)
Grippingforce
(Oilpressure:1.3MPa)
Grippingrange
(outsidediametergripping)
Mass
(standardsoftjawincluded)
Nominalairpressure
Maxairpressure
Nominaloilpressure
Maxoilpressure
mm
mm
mm
kg
6
3
φ5〜50
7.4
10
5
φ8〜69
18
10
5
φ8〜89
33
形 式 PLS04 PLS06 PLS08
-20〜+50℃/-10〜+40℃
Table4
Fig.6
kN
(kgf)
kN
(kgf)
MPa
(kgf／cm2)
MPa
(kgf／cm2)
MPa
(kgf／cm2)
MPa
(kgf／cm2)
6.7
(683)
16
(1631)
18.5
(1886)
40
(4078)
37
(3772)
80
(8157)
0.2〜0.7
(2〜7)
0.7
(7)
0.2〜1.3
(2〜13)
1.3
(13)
Airconsumption
(Plungerstroke5mm,0.6MPa) Nl 0.22 0.54 0.93
Storingtemperature/
Operatingtemperature
Reference：1kN=101.97kgf1MPa=10.197kgf/cm2
Whenstoringthisproduct,theproductshouldbesubjectedtotheantirusttreatmentandstoredinaplacefreefrom
wetting,condensation,orfreeze.
3 − 2 Relationshipbetweenpressureandgrippingforce
１．Grippingforce
Theworkgripperhasamechanismtoconvertairoroilpressurefromthebuilt-incylindertogrippingforce.
Thegrippingforcespecifiedinthespecificationisthevaluethattheairpressureis0.6MPa,ortheoilpressureis
1.3MPa.
However,thegrippingforceisdifferentdependingonthestateofgreaselubrication,greaseinuse,heightofthejaw,etc.
Thegrippingforcespecifiedinthespecificationisthevalueunderthefollowingconditions:
・TheKitagawastandardsoftjawisusedasthejaw.
・Theattachingboltsofthesoftjawaretightenedatthespecifiedtorque.(Refertopage9)
・ThenumericalvaluesareobtainedwiththeKitagawagrippingforcemeter.Thegrippingpositionofthegrippingforce
meterisataposition1/2oftheheightofthesoftjawtopsurface(heightfromthechucksurfacetothetopsurfaceof
thejaw).
・CHUCKGREASEPROisused.(Refertopage20).
・Theairpressureis0.6MPa,ortheoilpressureis1.3MPa.
0 0.2 0.4 0.6 0.8 1.0 1.2
10
20
30
40
50
Grippingforce(kN)
Pressure(MPa)
60
70
80
PLS06
PLS04
PLS08
・Useneither jaw that istaller jaw than standard jaw. The momenthanging to the work gripper becomes large
whenyouusetallerjawandthisisdangerousastheworkgripperandworkwillflyout.
Fig.7
Pv
Ps
h
C
5.2＞S
hP
CP
V
S
=
×
××
WARNING
Cuttingcondition
Asareviewmethodofcuttingcondition,thefollowingshowsacalculationexampleinthecasewherethemomentload
isputontheworkpiecebyadrilling.Thefinalcuttingcondition,however,mustbedeterminedbyatestcutting.
Ps:Grippingforceperajaw
μ:Grippingsurfacefrictioncoefficientbetween
jawandworkpiece.Ingeneral,0.1isused
whenbotharesmoothsurfaces.
Pv:Drillingthrust
Ｓ:Factorofsafety
3.Specifications
3 − 1 Specifications

13
14
Plungerstroke
Jawstroke（indiameter）
Grippingforce
(Airpressure:0.6MPa)
Grippingforce
(Oilpressure:1.3MPa)
Grippingrange
(outsidediametergripping)
Mass
(standardsoftjawincluded)
Nominalairpressure
Maxairpressure
Nominaloilpressure
Maxoilpressure
mm
mm
mm
kg
6
3
φ5〜50
7.4
10
5
φ8〜69
18
10
5
φ8〜89
33
形 式 PLS04 PLS06 PLS08
-20〜+50℃/-10〜+40℃
Table4
Fig.6
kN
(kgf)
kN
(kgf)
MPa
(kgf／cm2)
MPa
(kgf／cm2)
MPa
(kgf／cm2)
MPa
(kgf／cm2)
6.7
(683)
16
(1631)
18.5
(1886)
40
(4078)
37
(3772)
80
(8157)
0.2〜0.7
(2〜7)
0.7
(7)
0.2〜1.3
(2〜13)
1.3
(13)
Airconsumption
(Plungerstroke5mm,0.6MPa) Nl 0.22 0.54 0.93
Storingtemperature/
Operatingtemperature
Reference：1kN=101.97kgf1MPa=10.197kgf/cm2
Whenstoringthisproduct,theproductshouldbesubjectedtotheantirusttreatmentandstoredinaplacefreefrom
wetting,condensation,orfreeze.
3 − 2 Relationshipbetweenpressureandgrippingforce
１．Grippingforce
Theworkgripperhasamechanismtoconvertairoroilpressurefromthebuilt-incylindertogrippingforce.
Thegrippingforcespecifiedinthespecificationisthevaluethattheairpressureis0.6MPa,ortheoilpressureis
1.3MPa.
However,thegrippingforceisdifferentdependingonthestateofgreaselubrication,greaseinuse,heightofthejaw,etc.
Thegrippingforcespecifiedinthespecificationisthevalueunderthefollowingconditions:
・TheKitagawastandardsoftjawisusedasthejaw.
・Theattachingboltsofthesoftjawaretightenedatthespecifiedtorque.(Refertopage9)
・ThenumericalvaluesareobtainedwiththeKitagawagrippingforcemeter.Thegrippingpositionofthegrippingforce
meterisataposition1/2oftheheightofthesoftjawtopsurface(heightfromthechucksurfacetothetopsurfaceof
thejaw).
・CHUCKGREASEPROisused.(Refertopage20).
・Theairpressureis0.6MPa,ortheoilpressureis1.3MPa.
0 0.2 0.4 0.6 0.8 1.0 1.2
10
20
30
40
50
Grippingforce(kN)
Pressure(MPa)
60
70
80
PLS06
PLS04
PLS08
・Useneither jaw that istaller jaw than standard jaw. The momenthanging to the work gripper becomes large
whenyouusetallerjawandthisisdangerousastheworkgripperandworkwillflyout.
Fig.7
Pv
Ps
h
C
5.2＞S
hP
CP
V
S
=
×
××
WARNING
Cuttingcondition
Asareviewmethodofcuttingcondition,thefollowingshowsacalculationexampleinthecasewherethemomentload
isputontheworkpiecebyadrilling.Thefinalcuttingcondition,however,mustbedeterminedbyatestcutting.
Ps:Grippingforceperajaw
μ:Grippingsurfacefrictioncoefficientbetween
jawandworkpiece.Ingeneral,0.1isused
whenbotharesmoothsurfaces.
Pv:Drillingthrust
Ｓ:Factorofsafety
3.Specifications
3 − 1 Specifications

16
15
φd
１．Preparationoftheplugforforming
・Preparetheplugforforming.Thesurfaceroughnessoftheplug
outsidediameteristobeapproximately25s,andmakeashape
withsufficientthicknesswhichdoesnotdistort.
・Setouterdiameterdimensionofplugtogripitaroundthemiddle
ofjawstroke.
・Itisconvenienttoprocesstappinginthecenterpartoftheplug
andtoguidewithabolt,etc.
4 − 2 Formingsoftjaw
Plug
Jaw
Jaw
Plug
φＤ
Locator
Work
Jaw
２．Grippingoftheplugforforming
・Jawandlocatoraredetached.
・Fittheplugforformingtotheworkgripperandfixthejaws
temporarilywithjawattachingbolt.Sethydraulicpressuretolow
andgriptheplug.Thenpushtheplugtochuckevenlysothatthe
plugdoesnottilt.
・Tightenthejawattachingboltsbyspecifiedtorqueinastateasis.
Ifthetemporaryjawsfixingisnottightenough,thejawarelifted
whengrippingtheplug.Theplugwillnotbesetcorrectly.
・Unclampthechuckandsetthehydraulicpressuretotheworking
condition.Thengriptheplugagain.Thenpushtheplugtochuck
evenlysothattheplugdoesnottilt.
３．Forming
・Processthegrippingpart(dimensionφD)oftheworkinthestate
thattheplugiskeptgripped.TheφDpartistobeapproximately
thesamediameter(H7)asthediameterofthegrippingpartofthe
work,andprocesstobesurfaceroughnessat6sorless.
・Setthehydraulicpressureduringformingthesameasduring
processingofthework,orslightlyhigher.
・Whentheplugdistorts,lowerthehydraulicpressureorchangethe
plugintoashapewhichdoesnoteasilydistort.
４．Trialcutting
・Removetheplugforforming andattachthelocatorand the jigs
necessary,thengriptheworktocheckthejawstroke.
・Implement trial cutting to check the process precision and that
thereisnoslip,etc.
・When the gripping contact of the jaw is stronger in its forefront
part,thework-piececanbegrippedbetterwithlessrunoutatend
ofthework-piece.
・Griptheplugforformingwhenyouformthesoftjaw.Ifyoudonot,thejawisrotatedbythecuttingforce,thisis
dangerousasthejawwillflyout.
・Thegrippingforce,retractingmotionandaccuracybecomestablewhenthegrippingcenterheightbecomesas
lowaspossible.
・Whenthejawisnotfinishedonthemachineoritisfinishedonanothermachine,thecontactforthework-piece
becomesworse,thusresultinginanunstableretractingmotionorreducingthegrippingaccuracy.
・Whenfinishingthejawwithouttouchingtheplugforformingtothechucksurfaceorlocatordatumendface,the
grippingaccuracymaybeimpaired.
・Whenthegrippingpositionoftheplugforformingisnearthegrippingfaceofwork-pieceasmuchaspossible,
thegrippingaccuracybecomesstable.
・Whenthejawfinishedonthemachineisremovedfromtheworkgripperonce,thegrippingaccuracybecomes
lowascomparewithwhenitisattachedasis.
・Donotmistakethenumbersmarkedonjaw.
・Iftherigidityoftheplugforformingisinsufficient,thegrippingaccuracybecomesloworstrokepositionbecomes
outoforder.
・Usetheboltsattachedtotheworkgripper,anddonotuseotherbolts.However,ifyoumustuseotherboltsnot
providedbyKitagawa,useboltsthathaveatleastastrengthclassificationof12.9(10.9forM22ormore)andbe
suretheyarelongenough.
・Donotrotatetheworkgrippersothatthejawattachingboltisloosenedcausingthejawtoflyout.
・Neverusethechuckwhenthework-pieceisclampednearthestrokeendmorethan75%ofthestroke.When
thework-pieceisclampednearthestrokeend,becausethework-pieceisnotcompletelygrippedorthegripping
forceisinsufficient,thisisdangerousastheworkwillflyout.
・Alwaystightentheboltsatthespecifiedtorque.Ifthetorqueisinsufficientorexcessive,theboltwillbreak,which
isdangerousastheworkgripperorworkwillflyout.
4 − 1 Attachmentofjaw
DANGER
Table5
Boltsize Tighteningtorque
M5
M6
M8
M10
M12
M14
M16
M20
7.5N・m
13N・m
33N・m
73N・m
107N・m
171N・m
250N・m
402N・m
NOTICE
WARNING
Jaw
attaching
bolt
Forefront
contact
4.FormingSoftJaw
Preparethejawthathastheshape,dimensions,accuracy,planeroughnessandquenchingsuitableforprocessingthe
work-piece.Werecommendfollowingthefollowingmethodformanufacturingthejaws.
・Formingstandardsoftjawonthemachineandusingarawmaterialasis.Althoughitisinferiorindurabilityon
grippingface,youcanmanufactureproductimmediately.
・Formingstandardsoftjawroughlyandquenchingtheirgrippingface,thenfinishingonthemachine.Thisissuitable
foramassproduction,becauseitexcelsindurabilityofthegrippingface.
・WerecommendyourequestKITAGAWAformanufacturing,ifyoumanufactureaspecialshapejawfromscratch
withoutusingsoftjaw.

16
15
φd
１．Preparationoftheplugforforming
・Preparetheplugforforming.Thesurfaceroughnessoftheplug
outsidediameteristobeapproximately25s,andmakeashape
withsufficientthicknesswhichdoesnotdistort.
・Setouterdiameterdimensionofplugtogripitaroundthemiddle
ofjawstroke.
・Itisconvenienttoprocesstappinginthecenterpartoftheplug
andtoguidewithabolt,etc.
4 − 2 Formingsoftjaw
Plug
Jaw
Jaw
Plug
φＤ
Locator
Work
Jaw
２．Grippingoftheplugforforming
・Jawandlocatoraredetached.
・Fittheplugforformingtotheworkgripperandfixthejaws
temporarilywithjawattachingbolt.Sethydraulicpressuretolow
andgriptheplug.Thenpushtheplugtochuckevenlysothatthe
plugdoesnottilt.
・Tightenthejawattachingboltsbyspecifiedtorqueinastateasis.
Ifthetemporaryjawsfixingisnottightenough,thejawarelifted
whengrippingtheplug.Theplugwillnotbesetcorrectly.
・Unclampthechuckandsetthehydraulicpressuretotheworking
condition.Thengriptheplugagain.Thenpushtheplugtochuck
evenlysothattheplugdoesnottilt.
３．Forming
・Processthegrippingpart(dimensionφD)oftheworkinthestate
thattheplugiskeptgripped.TheφDpartistobeapproximately
thesamediameter(H7)asthediameterofthegrippingpartofthe
work,andprocesstobesurfaceroughnessat6sorless.
・Setthehydraulicpressureduringformingthesameasduring
processingofthework,orslightlyhigher.
・Whentheplugdistorts,lowerthehydraulicpressureorchangethe
plugintoashapewhichdoesnoteasilydistort.
４．Trialcutting
・Removetheplugforforming andattachthelocatorand the jigs
necessary,thengriptheworktocheckthejawstroke.
・Implement trial cutting to check the process precision and that
thereisnoslip,etc.
・When the gripping contact of the jaw is stronger in its forefront
part,thework-piececanbegrippedbetterwithlessrunoutatend
ofthework-piece.
・Griptheplugforformingwhenyouformthesoftjaw.Ifyoudonot,thejawisrotatedbythecuttingforce,thisis
dangerousasthejawwillflyout.
・Thegrippingforce,retractingmotionandaccuracybecomestablewhenthegrippingcenterheightbecomesas
lowaspossible.
・Whenthejawisnotfinishedonthemachineoritisfinishedonanothermachine,thecontactforthework-piece
becomesworse,thusresultinginanunstableretractingmotionorreducingthegrippingaccuracy.
・Whenfinishingthejawwithouttouchingtheplugforformingtothechucksurfaceorlocatordatumendface,the
grippingaccuracymaybeimpaired.
・Whenthegrippingpositionoftheplugforformingisnearthegrippingfaceofwork-pieceasmuchaspossible,
thegrippingaccuracybecomesstable.
・Whenthejawfinishedonthemachineisremovedfromtheworkgripperonce,thegrippingaccuracybecomes
lowascomparewithwhenitisattachedasis.
・Donotmistakethenumbersmarkedonjaw.
・Iftherigidityoftheplugforformingisinsufficient,thegrippingaccuracybecomesloworstrokepositionbecomes
outoforder.
・Usetheboltsattachedtotheworkgripper,anddonotuseotherbolts.However,ifyoumustuseotherboltsnot
providedbyKitagawa,useboltsthathaveatleastastrengthclassificationof12.9(10.9forM22ormore)andbe
suretheyarelongenough.
・Donotrotatetheworkgrippersothatthejawattachingboltisloosenedcausingthejawtoflyout.
・Neverusethechuckwhenthework-pieceisclampednearthestrokeendmorethan75%ofthestroke.When
thework-pieceisclampednearthestrokeend,becausethework-pieceisnotcompletelygrippedorthegripping
forceisinsufficient,thisisdangerousastheworkwillflyout.
・Alwaystightentheboltsatthespecifiedtorque.Ifthetorqueisinsufficientorexcessive,theboltwillbreak,which
isdangerousastheworkgripperorworkwillflyout.
4 − 1 Attachmentofjaw
DANGER
Table5
Boltsize Tighteningtorque
M5
M6
M8
M10
M12
M14
M16
M20
7.5N・m
13N・m
33N・m
73N・m
107N・m
171N・m
250N・m
402N・m
NOTICE
WARNING
Jaw
attaching
bolt
Forefront
contact
4.FormingSoftJaw
Preparethejawthathastheshape,dimensions,accuracy,planeroughnessandquenchingsuitableforprocessingthe
work-piece.Werecommendfollowingthefollowingmethodformanufacturingthejaws.
・Formingstandardsoftjawonthemachineandusingarawmaterialasis.Althoughitisinferiorindurabilityon
grippingface,youcanmanufactureproductimmediately.
・Formingstandardsoftjawroughlyandquenchingtheirgrippingface,thenfinishingonthemachine.Thisissuitable
foramassproduction,becauseitexcelsindurabilityofthegrippingface.
・WerecommendyourequestKITAGAWAformanufacturing,ifyoumanufactureaspecialshapejawfromscratch
withoutusingsoftjaw.

17
18
・Whengrippingaworkwiththechuck,donotgetfingersorhandsbecomecaught.Thiscouldcausecrushedor
cutfingersandhands.
Thisproductisadevicetofixawork-piecewhenitisprocessedbytherotarytableorthemachiningcenter.Abuilt-in
cylinderclosesthejawandfixesawork-piecesothatitdoesnotmoveduringprocessing.Thechuckopensthejaw
afterhavingprocesseditandremoveawork-piece.
5 − 1 Precautionsduringgrippingworkwithworkgripper
5
− 2 Precautionsduringgrippingworkinirregularshape
5.Usage
・Castmetal,pitchedshapeortapershapecannotbegripped.
・Iftheprotrusionoftheworkislong,supportitwithacenterorthesteadyrest.Iftheprotrusionislongthetipof
theworkturns,andthisisdangerousastheworkwillflyout.
5 − 3 Precautionsrelatedtousageofjaw
・If a soft jaw other than one made by Kitagawa Corporation is used, the engagement will be inferior, and the
masterjawwillbedeformed,thegrippingprecisionwillworsen,andtheworkwillflyoutduetogrippingfailure,
whichisdangerous.
・Donotusethesoftjawbyweldingtojoinforextension.Thejawwillbreakduetoinsufficientstrengthandthe
serrationpartwillbecomedistortedduetowelding.Asaresult,theengagementwillworsen,theserrationcrests
willbreak,andthisisdangerousastheworkwillflyout.
・Whenreplacingthetopjaw,carefullycleantheserrationpartwiththemasterjaw,andtheengagementpartof
theTnut.Failuretodothismaycauseaprecisionfailure.
・Settheairpressureaccordingtotheshapeoftheworkandthecuttingconditions.Pipeshapework,etc.,maybe
distortediftheyaretightenedatahighgrippingforce.
NOTICE
DANGER
WARNING
WARNING
＜１＞Interference,contact,impact
・Before starting work, check that the top jaw, locator, work, etc., and the tool and the tool post, etc., do not
interfereatlowrotationandthenstartprocessing.
・Do not allow anything to impact the work gripper, jaw, and the work. The work gripper will break and this is
dangerousastheworkgripperandworkwillflyout.
・Ifthetoolandthetoolpostcontacttheworkgripperortheworkduetomalfunctionortapemistake,etc.,and
impactisgiven,immediatelystopthemachining,andcheckthattherearenoabnormalitiesinthetopjaw,master
jaw,Tnutandboltsofeachpart,etc.
＜２＞Coolant
・Unlesscoolantwitharustpreventiveeffectisused,rustwilloccurinsidetheworkgripperandgrippingforcedrop
mayresult.Theworkwillflyoutduetothegrippingforcedropandthisisdangerous.
5 − 4 Precautionsrelatedtoprocessing
5
− 5 Attachmentoflocatorandjig
・Grip the work-piece after having pushed it to the locator. You can't grip the work-piece stably when you use
withoutlocator,thisisdangerousastheworkwillflyout.(Theblackthincoverforthecenterofthechuckisnota
locator.Thisistemporaryprotectionforthehole.)
ThelocatorisrequiredforthePLSworkgripper.ThePLSworkgrippergripsthework-pieceintheradialdirectionand
pressesthework-piecetothelocatorsimultaneously.Preparethelocatorthathasthedimensions,accuracy,materials
andquenchingsuitableforprocessingthework-piece.
・Sincetherunoutofthelocatordatumendfaceremarkablyinfluencesthefinishingaccuracyofthework-piece,the
datumendfacerequiresthatithassufficienthardnessandaccuracy. Toimprovetheaccuracyofthedatumend
face,werecommendthatthelocatorisfinishedwithitattachedtothechuckafterquenching.
・Inthecaseofattachingthelocatorandthejigonthechuckbodysurface,tapordrillaholeintheadditionalprocess
rangespecifiedinFig.8.
・Aircanbesuppliedtotheseatingpositionbyremovingtheorificeplug【21】fromtheblock【9】.Aircanalsobe
suppliedthroughtheworkgripperbacksidebyfirstremovingholeplugD【11】fromtheflange【2】airsupplyport
forseatingposition.Also,removetheorificeplug【21】fromtheblock【9】andreplaceitwiththeholeplugD【11】
thathasbeenrewoundwithsealingtapetobeusedasastopper.
・Theworkgrippercanbemodifiedonlyinthemanufacturerpermissiblerange.Thiswillnotonlybreakthework
gripperbuttheworkgripperandworkmayflyout,whichisdangerous.
・Provideacountermeasureagainstflyingout(dwellpin,etc.)duetocentrifugalforcetothelocatororthejig,and
attachwithboltswhichhavesufficientstrength.Thelocatororthejigmayflyout,andthisisdangerous.
WARNING
WARNING
DANGER

17
18
・Whengrippingaworkwiththechuck,donotgetfingersorhandsbecomecaught.Thiscouldcausecrushedor
cutfingersandhands.
Thisproductisadevicetofixawork-piecewhenitisprocessedbytherotarytableorthemachiningcenter.Abuilt-in
cylinderclosesthejawandfixesawork-piecesothatitdoesnotmoveduringprocessing.Thechuckopensthejaw
afterhavingprocesseditandremoveawork-piece.
5 − 1 Precautionsduringgrippingworkwithworkgripper
5
− 2 Precautionsduringgrippingworkinirregularshape
5.Usage
・Castmetal,pitchedshapeortapershapecannotbegripped.
・Iftheprotrusionoftheworkislong,supportitwithacenterorthesteadyrest.Iftheprotrusionislongthetipof
theworkturns,andthisisdangerousastheworkwillflyout.
5 − 3 Precautionsrelatedtousageofjaw
・If a soft jaw other than one made by Kitagawa Corporation is used, the engagement will be inferior, and the
masterjawwillbedeformed,thegrippingprecisionwillworsen,andtheworkwillflyoutduetogrippingfailure,
whichisdangerous.
・Donotusethesoftjawbyweldingtojoinforextension.Thejawwillbreakduetoinsufficientstrengthandthe
serrationpartwillbecomedistortedduetowelding.Asaresult,theengagementwillworsen,theserrationcrests
willbreak,andthisisdangerousastheworkwillflyout.
・Whenreplacingthetopjaw,carefullycleantheserrationpartwiththemasterjaw,andtheengagementpartof
theTnut.Failuretodothismaycauseaprecisionfailure.
・Settheairpressureaccordingtotheshapeoftheworkandthecuttingconditions.Pipeshapework,etc.,maybe
distortediftheyaretightenedatahighgrippingforce.
NOTICE
DANGER
WARNING
WARNING
＜１＞Interference,contact,impact
・Before starting work, check that the top jaw, locator, work, etc., and the tool and the tool post, etc., do not
interfereatlowrotationandthenstartprocessing.
・Do not allow anything to impact the work gripper, jaw, and the work. The work gripper will break and this is
dangerousastheworkgripperandworkwillflyout.
・Ifthetoolandthetoolpostcontacttheworkgripperortheworkduetomalfunctionortapemistake,etc.,and
impactisgiven,immediatelystopthemachining,andcheckthattherearenoabnormalitiesinthetopjaw,master
jaw,Tnutandboltsofeachpart,etc.
＜２＞Coolant
・Unlesscoolantwitharustpreventiveeffectisused,rustwilloccurinsidetheworkgripperandgrippingforcedrop
mayresult.Theworkwillflyoutduetothegrippingforcedropandthisisdangerous.
5 − 4 Precautionsrelatedtoprocessing
5
− 5 Attachmentoflocatorandjig
・Grip the work-piece after having pushed it to the locator. You can't grip the work-piece stably when you use
withoutlocator,thisisdangerousastheworkwillflyout.(Theblackthincoverforthecenterofthechuckisnota
locator.Thisistemporaryprotectionforthehole.)
ThelocatorisrequiredforthePLSworkgripper.ThePLSworkgrippergripsthework-pieceintheradialdirectionand
pressesthework-piecetothelocatorsimultaneously.Preparethelocatorthathasthedimensions,accuracy,materials
andquenchingsuitableforprocessingthework-piece.
・Sincetherunoutofthelocatordatumendfaceremarkablyinfluencesthefinishingaccuracyofthework-piece,the
datumendfacerequiresthatithassufficienthardnessandaccuracy. Toimprovetheaccuracyofthedatumend
face,werecommendthatthelocatorisfinishedwithitattachedtothechuckafterquenching.
・Inthecaseofattachingthelocatorandthejigonthechuckbodysurface,tapordrillaholeintheadditionalprocess
rangespecifiedinFig.8.
・Aircanbesuppliedtotheseatingpositionbyremovingtheorificeplug【21】fromtheblock【9】.Aircanalsobe
suppliedthroughtheworkgripperbacksidebyfirstremovingholeplugD【11】fromtheflange【2】airsupplyport
forseatingposition.Also,removetheorificeplug【21】fromtheblock【9】andreplaceitwiththeholeplugD【11】
thathasbeenrewoundwithsealingtapetobeusedasastopper.
・Theworkgrippercanbemodifiedonlyinthemanufacturerpermissiblerange.Thiswillnotonlybreakthework
gripperbuttheworkgripperandworkmayflyout,whichisdangerous.
・Provideacountermeasureagainstflyingout(dwellpin,etc.)duetocentrifugalforcetothelocatororthejig,and
attachwithboltswhichhavesufficientstrength.Thelocatororthejigmayflyout,andthisisdangerous.
WARNING
WARNING
DANGER

PLS04
PLS06,PLS08
9-e
A
60°
45°
30°
φa φb
φc
φd
B
9-e
A
B
φa φb
φc
φd
45°
60°
30°
C
Fig.8
・Addgreaseatleastonceamonth.
・Fullystrokethejawbeforestartingworkoruponsupplyinggrease,andcheckthespecifiedstroke.
・Alwayscleanthechuckbodyortheslidingsurfaceusinganairgun,etc.,attheendofwork.
・Periodicallydrainwaterinthefilter.
・Alwaysfilllubricatorwithoiluptoproperlevel.
・Whenthelockvalveunitisused,confirmwhethertherewillnotbethedecreaseininnerpressurebecauseoftheair
leakageinatleastonceaweek.(RefertoPage22)
・Checkthattheboltsofeachpartarenotloosenedatleastonceevery3months.
・Disassembleandcleanatleastonceevery6monthsorevery100,000strokes(onceevery2monthsormorefor
cuttingcastmetal).
１．Positiontolubricate
・Lubricateusingagreasegunfromthegreasenippleonthebodyperipherypart.
・Readthefollowinglubricatingprocedureswithreferencetopages5-6.
1.Turnoffthemainpowerofthemachinebeforestartingwork.
2.Removethesetscrew[18]onthebodyperipherypart.
3.Movethejawsseveraltimeswithoutwork-piecetoexhaustoldgrease.Atthistime,ifthecoolantorcuttingchips
areinthechuck,disassembleandcleanit.Itisnecessarytodoubtthedamageoftheseal.
4.Lubricateusingagreasegunfromthegreasenipple[20]onthebodyperipherypartuntilgreaseisexhaustedfrom
thehole.
5.Installthesetscrew[18],thenmove2or3timeswithoutwork-piece,thenremovethesetscrewagainand
lubricate.
6.Installthesetscrew[18]certainly.
・Itisconvenienttousegreasesupplyport(Rc1/8)onthebodyperipherypartifyouarrangeandusealotofwork
grippers.
２．Greasetouse
・UsethedesignatedgreasespecifiedinTable7.Ifgreaseotherthanthedesignatedgreaseisused,sufficienteffect
maynotbeobtained.
３．Frequencyoflubrication
・Addgreaseatleastonceamonth.
・Inthecaseofhighrotationorinthecaseofusingalargeamountofwatersolublecoolant,increasethefrequencyof
lubricationaccordingtotheusageconditions.
6 − 1 PeriodicInspection
6 − 2 Greaselubrication
6．MaintenanceandInspection
Genuine
product
Conventional
product
CHUCKGREASEPRO
Kitagawachuckgrease
MolykoteEPGrease
ChuckEEZgrease
MOLYKOTETP-42
KluberpasteME31-52
Kitagawagenuineproduct
(Kitagawadistributorofeachcountry)
Conventionalproduct
TORAYDowCorning(onlyinsideJapan)
Kitagawa-NorthtechInc.(NorthAmericanregion)
DowCorning(Europe,Asianregion)
Kluberlubrication(worldwide)
Table7
・To keep the chuck running in the best condition for a long time, adequate grease lubrication is necessary.
Insufficient grease lubrication causes a drop in the gripping force, operation failure at low hydraulic pressure,
dropingrippingprecision,abnormalwearing,seizing,etc.Theworkwillflyoutduetoadropinthegrippingforce
andthisisdangerous.
WARNING
19
20
5 − 6 Precautionsrelatedtousageoflockvalveunit
・Iftheairsupplyisstoppedandtheworkpieceisheldforalongtimeusingthelockvalveunit,beforestartofthe
work,measurethepressureretentiontimetomakesurethattheinternalpressuredoesnotdrop.Reductionin
grippingforceduetotheinternalpressuredropcausestheworkpiecetoflyout.
・Usethelockvalveunitonlybyair.Thelockvalveunitisdamagedwhentheoilpressureisput,thisisdangerous
astheworkwillfly.
A:Additionalprocessimpossibledimension. B:Processibledepthoftappingordrillingahole.
Type A
PLS04
PLS06
PLS08
25
20
20
B
14.5
17
17
C
40.5
-
-
a
110.1
165.1
210.1
b
32
35
55
c
42
49
71
d
62
70
95
e
M5-10
M6-12
M6-12
Table6
Lockvalveunit
Lockvalveretainsthepneumaticpressureinsidethecylindertemporarily,whenthepneumaticpressuresuddenlydrops
duetoblackoutormalfunction,etc. Weprepareforthelockvalveunitforexclusiveuseoftheworkgripperoptionally.
Theairpressureintheworkgripperissealedupbyusingthelockvalveunit.Therefore,itispossibletomachininga
workpiecewithoutpiping.
WARNING
Shadedpartadditionalprocesspossiblerange