Oriental motor 2LSB10 User manual

Table of contents
HL-8025-3
Rack and Pinion Systems
LS Linear Head
OPERATING MANUAL
Thank you for purchasing an Oriental Motor product.
This Operating Manual describes product handling procedures and safety precautions.
•Please read it thoroughly to ensure safe operation.
• Always keep the manual where it is readily available.
1 Introduction ..........................................2
1.1 Before use ............................................... 2
1.2 Safety precautions .................................. 2
1.3 Precautions for use ................................. 3
2 Preparation ..........................................4
2.1 Checking the product .............................. 4
2.2 How to read the model number ............... 4
2.3 Combinations of motors and
linear head .............................................. 4
2.4 Names and functions of parts ................. 5
3 Installation............................................6
3.1 Location for installation ........................... 6
3.2 Installing the linear head ......................... 6
3.3 Installing a load ....................................... 7
3.4 Assembling the motor ............................. 8
3.5 Actions to be taken upon
detachment of the rack ............................ 9
4 Operation ...........................................10
5 Troubleshooting and
remedial actions ................................11

Introduction
−2−
1 Introduction
1.1 Before use
Only qualied and educated personnel should work with the product. Use the product correctly after
thoroughly reading the section “Safety precautions.”
Should you require the inspection or repair of internal parts, please contact the Oriental Motor branch or sales
ofce from which you purchased the product.
The product described in this manual has been designed and manufactured to be incorporated in general
industrial equipment. Do not use for any other purpose. Oriental Motor Co., Ltd. is not responsible for any
damage caused through failure to observe this warning.
 RoHS Directive
The products do not contain the substances exceeding the restriction values of RoHS Directive (2011/65/EU).
1.2 Safety precautions
The precautions described below are intended to prevent danger or injury to the user and other personnel
through safe, correct use of the product. Use the product only after carefully reading and fully understanding
these instructions.
Handling the product without observing the instructions that accompany a “Caution”
symbol may result in injury or property damage.
Note
The items under this heading contain important handling instructions that the user
should observe to ensure safe use of the product.
•Do not use the linear head beyond its specications. Doing so may result in injury or equipment damage.
•Conrm that the product matches the order. Installing a wrong product may result in injury.
•Do not transport the product by holding the rack or case only. If the case or rack drops, injury may result.
•When moving the rack up and down, always afx the rack. If the case or rack drops, injury may result.
•Operate the product after securely afxing the linear head. Failure to do so may result in injury or
equipment damage.
•Be sure to install a cover, etc., on the moving part. Failure to do so may result in injury.
•Check the moving direction before assembling the product into a machine. Failure to do so may result in
injury or equipment damage.
•Do not touch the linear head while the linear head is operating. Injury may result.
•Before operating, conrm that the emergency-stop function is working properly. Failure to do so may result
in injury.
•Do not disassemble or modify the linear head. This may cause injury. Refer all such internal inspections
and repairs to the branch or sales ofce from which you purchased the product.
•Dispose the product correctly in accordance with laws and regulations, or instructions of local governments.
•Grease for gear lubrication is applied to the rack of the linear head, and it may ooze out. If there is concern
over possible environmental damage resulting from the leakage of grease, check for grease stains during
regular inspections. Alternatively, install an oil pan or other device to prevent leakage from causing further
damage. Oil leakage may lead to problems in the customer’s equipment or products.

Introduction
−3−
1.3 Precautions for use
This section covers limitations and requirements the user should consider when using the LS linear head.
•Operate the motor at or below the maximum transportable mass.
If the motor is operated while receiving a load greater than the maximum transportable mass, the rack tooth
surface or pinion, may be damaged. Always operate the motor under a load equivalent to or below the
maximum transportable mass.
•Do not apply an radial load in excess of the specied permissible limit.
If the motor is operated continuously under an radial load exceeding the permissible limit, the rack bushings
may be worn quickly or even damaged. Always keep the radial load to the permissible limit or below.
Even if the radial load is kept to the permissible limit or below, repeated operation of the lineard motor will
still cause the rack bushings to wear. To suppress rack bushing wear, install a guide, etc., to reduce the radial
load or rotational torque.
•Do not stop the rack by means of contact.
Never allow the moving rack to contact a hard object. The shock may damage the rack tooth surface, pinion
and/or gear.
•Reversing the rack
Be sure to reverse the lineard motor before either end of the rack enters the rack bushing. The rack operates
properly when being supported by the rack bushings on both sides of the rack case.
•Lubricating the rack
Do not wipe grease off the rack surface or the tooth surface meshing with the pinion. Grease is pre-charged
in the rack case before shipment. If grease is wiped off, the rack and pinion life will become shorter. Always
keep the rack surface and tooth surface properly greased during operation.
•Measures to prevent the rack from dropping
The electromagnetic brake built into the electromagnetic brake motor is of the non-excitation operation type.
While power is not supplied to the electromagnetic brake, the rack is held in position. When power is
supplied, the brake will be released and the rack will become movable.
When the linear head is installed in the direction allowing the rack to move up and down, the load and/or rack
may drop if the electromagnetic brake is released in a standstill state.
Lay a buffer material, etc., underneath to prevent damage that may otherwise result from dropping of the load
and/or rack.

Preparation
−4−
2 Preparation
This section covers items you should check before using this LS linear head.
2.1 Checking the product
Open the package and conrm that all of the following items are available.
Should you nd any item missing or damaged, contact the Oriental Motor ofce where you purchased the
product.
•Linear head 1 unit
•OPERATING MANUAL (this manual) 1 copy
2.2 How to read the model number
2 LS B 45 - 5
Rack stroke*㻌1䠖100 mm (3.94 in.) 6䠖600 mm (23.62 in.)
2䠖200 mm (7.87 in.) 7䠖700 mm (27.56 in.)
3䠖300 mm (11.81 in.) 8䠖800 mm (31.50 in.)
4䠖400 mm (15.75 in.) 9䠖900 mm (35.43 in.)
5䠖500 mm (19.69 in.) 10䠖1000 mm (39.37 in.)
Name of the series
: LS linear head
Rack speed (mm/s)
Direction of rack movement
㻌B: Parallel with mounting foot surface
F: Vertical to mounting foot surface
Model
2: 60 mm (2.36 in.) square
4: 80 mm (3.15 in.) square
* 2LS type: Up to 800 mm (31.50 in.)
2.3 Combinations of motors and linear head
Standard AC motors that can be combined with the linear head are listed below.
In addition to the products specied below, you can also combine GN pinion motors.
Recommended motor Application 2LS type 4LS type
World K series Constant
speed
Motor leads
type
2RK6GN-AW2J 4RK25GN-AW2J
2RK6GN-AW2U 4RK25GN-AW2U
2RK6GN-CW2J 4RK25GN-CW2J
2RK6GN-CW2E 4RK25GN-CW2E
Terminal
box type
2RK6GN-AW2BJ 4RK25GN-AW2TJ
2RK6GN-AW2BU 4RK25GN-AW2TU
2RK6GN-CW2BJ 4RK25GN-CW2TJ
2RK6GN-CW2BE 4RK25GN-CW2TE
Position holding 2RK6GN-AW2MJ 4RK25GN-AW2MJ
2RK6GN-CW2MJ 4RK25GN-CW2MJ
2IK6GN-SW2M 4IK25GN-SW2M
Push-motion 2TK3GN-AW2J 4TK10GN-AW2J
2TK3GN-AW2U 4TK10GN-AW2U
2TK3GN-CW2J 4TK10GN-CW2J
2TK3GN-CW2E 4TK10GN-CW2E
* This table lists representative motors that can be combined. In addition to the above, GN pinion motors of
o60 mm (2.36 in.) and o80 mm (3.15 in.) can also be combined with the 2LS type and 4LS type, respectively.

Preparation
−5−
Recommended motor Application 2LS type 4LS type
K series
MSD series
Constant
speed
Motor leads
type
2RK6GN-A 4RK25GN-A
2RK6GN-C 4RK25GN-C
Position holding 2RK6GN-AM 4RK25GN-AM
2RK6GN-CM 4RK25GN-CM
─4IK25GN-SM
Speed change MSD206-411D/U MSD425-411D/U
MSD206-412D/U MSD425-412D/U
* This table lists representative motors that can be combined. In addition to the above, GN pinion motors of
o60 mm (2.36 in.) and o80 mm (3.15 in.) can also be combined with the 2LS type and 4LS type, respectively.
* When the rack is used in a vertical direction, the speed control cannot be performed in driving to the downward
direction. Use it at full speed.
Note
•When performing constrained operation using a torque motor, do not cause the motor to
stop upon contacting a hard stop. Doing so will not only generate excessive torque, but
also transmit inertial impact force to the linear head, which will signicantly reduce the
service life of the linear head.
•When performing push-motion operation, use a spring or other buffer material on the
pressing section. If push-motion operation is performed without using any buffer material,
the internal gear may be damaged due to rotor inertia.
Spring
2.4 Names and functions of parts
Mounting foot
Mounting holes
(for mounting on
the front face) Rack
Rack bushing
A guide that holds the rack in place.
Tapped holes used to install a load
(two locations)
Mounting groove for the dog or shield plate
(sold separately)
Mounting screw for the limit switch
or photomicrosensor
(sold separately)
Mounting holes
Rack case

Installation
−6−
3 Installation
This section covers the linear head’s installation location and method, as well as the method of installing a load.
3.1 Location for installation
The linear head is designed and manufactured for use as a built-in component in industrial equipment.
Install it in a well-ventilated place satisfying the following conditions, where the product can be easily
accessed for the purpose of inspection.
•Inside an enclosure installed indoors (with ventilation hole provided)
•Ambient temperature: –10 to +50 °C (+14 to +122 °F) (non-freezing)
•Ambient humidity: 85% or less (non-condensing)
•Area that is free of explosive atmosphere or toxic gas (such as sulfuric gas) or liquid
•Area not exposed to direct sun
•Area free of excessive amount of dust, iron particles or the like
•Area not subject to splashing water (rains, water droplets), oil (oil droplets) or other liquids
•Area not subject to continuous vibration or excessive shocks
3.2 Installing the linear head
Install the linear head using the mounting feet, or mounting holes provided on the front face.
Securely afx the linear head to a grounded metal plate.
Note
•When installing the linear head in the direction allowing the rack to move up and down,
take appropriate measures to prevent dropping and collision of the rack. If the rack drops,
the tooth surface, pinion and gear of the rack may be damaged.
•If you are using a photomicrosensor, install it after installing the lineard motor.
 Installation using a mounting foot
1. Drill mounting holes or tapped holes in the metal plate used to install the linear head.
With the F type, also drill a hole (G) for guiding the rack.
• Machining dimensions for
mounting holes for B type
• Machining dimensions for
mounting holes for F type
A±0.5 mm (0.02 in.)
B±0.5 mm (0.02 in.) ØH
D±0.5 mm (0.02 in.)
C
E±0.5 mm (0.02 in.)
FØI
ØG
Linear head
model
B type [mm (in.)] F type [mm (in.)]
A B ØH C D E F ØG ØI
2LS type 35
(1.38)
92
(3.62)
6.5
(0.26)
12.5
(0.49)
35
(1.38)
92
(3.62)
51
(2.01)
35
(1.38)
6.5
(0.26)
4LS type 30
(1.18)
100
(3.94)
8.5
(0.33)
15
(0.59)
30
(1.18)
100
(3.94)
58
(2.28)
45
(1.77)
8.5
(0.33)
2. Afx the linear head using four
screws (not supplied) in a manner
leaving no gaps between the linear
head and metal plate.
• B type • F type
Linear head
model
Mounting foot
thickness
[mm (in.)]
2LS type 9 (0.35)
4LS type 12 (0.47)

Installation
−7−
 Installation using mounting holes on the front face
1. Drill mounting holes or tapped holes in the metal plate used to install the linear head.
The same machining dimensions for mounting holes apply to both the B type and F type.
J±0.5 mm (0.02 in.)
J±0.5 mm (0.02 in.)
Linear head model J [mm (in.)]
2LS type 47 (1.85)
4LS type 62 (2.44)
2. Afx the linear head using four screws (not supplied) in a manner leaving no gaps between the
linear head and metal plate.
L
Linear head model L
2LS type M6 Effective depth
10 mm (0.39 in.)
4LS type M8 Effective depth
10 mm (0.39 in.)
3.3 Installing a load
Install the load using hexagonal socket head bolts (not supplied) through the tapped holes provided on the end
face of the rack.
When installing the load, always secure the rack with a wrench so that the rack will not receive rotational
force while the load is afxed.
Note When installing the load, align the axial centerline of the rack with that of the load.
Wrench
Tapped hole
A
Hex wrench
Linear head
model Thread size
Effective
depth
[mm (in.)]
Dimension
A
[mm (in.)]
2LS type M5 10 (0.39) 16 (0.63)
4LS type M8 15 (0.59) 20 (0.79)
 Maximum radial load
Keep the radial load received by the rack end to or below the permissible value, as applicable, specied in the
table below.
Stroke
[mm (in.)]
Linear head model Stroke
[mm (in.)]
Linear head model
2LS type
[N (lb.)]
4LS type
[N (lb.)]
2LS type
[N (lb.)]
4LS type
[N (lb.)]
100 (3.94) 55 (12.3) 120 (27) 600 (23.62) 15 (3.3) 40 (9)
200 (7.87) 40 (9) 90 (20) 700 (27.56) 12 (2.7) 40 (9)
300 (11.81) 30 (6.7) 70 (15.7) 800 (31.50) 8 (1.8) 25 (5.6)
400 (15.75) 25 (5.6) 60 (13.5) 900 (35.43) ─ 20 (4.5)
500 (19.69) 20 (4.5) 50 (11.2) 1000 (39.37) ─ 15 (3.3)
Note Even if the radial load does not exceed the permissible value, it is recommended to still
install a guide, etc., to reduce or disperse the radial load.

Installation
−8−
 Maximum rotational torque (moment)
Keep the rotational torque received by the rack to or below the permissible value, as applicable, specied in
the table below.
Linear head model Permissible rotational torque (moment) on rack
2LS type 0.3 N·m (2.6 lb-in) or less
4LS type 0.5 N·m (4.4 lb-in) or less
Note If the rack receives excessive rotational torque, the rack bushing will wear quickly.
 Gap between rack and rack bushing
There is a slight gap between the rack and rack bushing of the linear head. Initial values of the backlash
generated from the gap would be as follows.
A
B
D
CBacklash generated from gap
•A, B directions: About 2 mm
•C direction: About 0.5 mm
•D direction: About 0.5°
* The above gap dimensions in directions A and B are measured at
500 mm (19.69 in.) from the end face of the case on the linear head.
As the rack is operated repeatedly, the rack bushing will wear, and also this backlash will increase.
If you have concerns about the backlash, install a guide and others.
3.4 Assembling the motor
The assembly method varies between the 2LS type and 4LS type.
Note
•When assembling the motor, do not damage the motor shaft and gear. Noise will occur.
•In the case of a motor of the terminal box type, assemble the motor in a manner
preventing the terminal box from contacting the limit switch.
 2LS Type
1. Afx the gear case and rack case using an adhesive
tape, etc., so that the two will not separate from each
other.
2. Remove the screws and washers assembling the
gear case and rack case.
3. Assemble the motor, and afx the motor, gear
case and rack case using the screws and washers
removed in the preceding step.
Tightening torque: 1.8 N·m (250 oz-in)
 4LS Type
Afx the motor to the gear case using the supplied screws.
Tightening torque: 3.8 N·m (530 oz-in)

Installation
−9−
3.5 Actions to be taken upon detachment of the rack
If the rack detaches during installation or operation, take the following actions:
1. Turn off the power and remove the load.
2. With the 2LS type, afx the gear and rack case using an adhesive tape, etc., so that the two will
not separate from each other.
3. Remove the screws afxing the motor, and take out the motor.
4. Insert the detached rack through the rack bushing.
Push in the rack until it comes out from the rack bushing on the opposite side.
5. Assemble the motor by paying careful attention not to cause the rack to detach.

Operation
−10−
4 Operation
 Rotating direction of the motor output shaft and moving direction of
the rack
The rotating direction of the motor output shaft and moving direction of the rack, as viewed from the motor
output shaft, are shown below.
B type
Left
Right
Linear head model
Rotating direction of the motor shaft
Clockwise
(CW)
Counterclockwise
(CCW)
2LSB10 Left Right
2LSB20 Right Left
2LSB45 Left Right
4LSB10 Right Left
4LSB20 Right Left
4LSB45 Left Right
F type
Up
Down
Linear head model
Rotating direction of the motor shaft
Clockwise
(CW)
Counterclockwise
(CCW)
2LSF10 Down Up
2LSF20 Up Down
2LSF45 Down Up
4LSF10 Up Down
4LSF20 Up Down
4LSF45 Down Up

Troubleshooting and remedial actions
−11−
5 Troubleshooting and remedial actions
If the linear head does not operate normally, take appropriate actions by referring to the information provided
in this chapter. If the problem persists after you have taken the necessary actions, contact our Technical
Support Line.
Condition Possible cause Action if problem is found
The rack does not move. The rack is detached. Check if the rack is detached. If the
rack is detached, insert the rack
again by referring to page 9.
The rack is biting into the rack
bushing due to load received in the
rotating direction of the rack.
Turn the rack in the direction
opposite to the received load, until
it no longer bites into the bushing.
Rack movement is locked by a
guide, etc.
Remove the cause of the locked
rack and ensure that the rack is
only pushed.
Foreign matter is biting into the
rack.
Remove the foreign matter.
The rack moves in the
direction opposite to the
specied direction.
The rack is not viewed in the
correct direction.
Check the moving direction by
referring to page 10.

•Unauthorized reproduction or copying of all or part of this Operating Manual is prohibited.
If a new copy is required to replace an original manual that has been damaged or lost, please contact your nearest Oriental Motor
branch or sales ofce.
•Oriental Motor shall not be liable whatsoever for any problems relating to industrial property rights arising from use of any
information, circuit, equipment or device provided or referenced in this manual.
•Characteristics, specications and dimensions are subject to change without notice.
•While we make every effort to offer accurate information in the manual, we welcome your input. Should you nd unclear
descriptions, errors or omissions, please contact the nearest ofce.
• is a registered trademark or trademark of Oriental Motor Co., Ltd., in Japan and other countries.
Other product names and company names mentioned in this manual may be trademarks or registered trademarks of their respective
companies and are hereby acknowledged. The third-party products mentioned in this manual are recommended products, and
references to their names shall not be construed as any form of performance guarantee. Oriental Motor is not liable whatsoever for
the performance of these third-party products.
© Copyright ORIENTAL MOTOR CO., LTD. 2008
Published in December 2017
• Please contact your nearest Oriental Motor oce for further information.
Technical Support Tel:[phone]
8:30 A.M. to 5:00 P.M., P.S.T. (M-F)
7:30 A.M. to 5:00 P.M., C.S.T. (M-F)
www.orientalmotor.com
Schiessstraße 44, 40549 Düsseldorf, Germany
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Tel:[phone]
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