NEFF SHG-TGS-N User manual

Worm Gear Screw Jack M0-M5 / J1-J5
Version N/VK/R
Operating Manuel

Screw Jacks M0-M5 / J1-J5
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1Important Information....................................................................... 2
1.1 Instructions on Documentation...........................................................................2
1.2 Safekeeping of the Documentation .....................................................................2
1.3 Used Symbols.......................................................................................................2
1.4 Qualified Staff ......................................................................................................2
1.5 General Safety Instructions..................................................................................3
2Overview of the Worm Gear Screw Jacks............................................ 4
3Design of the Worm Gear Screw Jack.................................................. 5
4Assembly........................................................................................... 6
4.1 General Assembly Instructions ............................................................................6
4.2 Mounting Several Worm Gear Screw Jacks in Parallel ........................................7
4.3 Screw Jacks with safety nut (optional with limit switch).....................................8
4.4 Screw Jacks with telescopic screw.....................................................................10
5Commissioning ................................................................................ 11
6Maintenance ................................................................................... 11
6.1 Lubricants and Fill Quantities.............................................................................12
7Malfunctions ................................................................................... 13
8Manufacturer’s Declaration ............................................................. 14

Screw Jacks M0-M5 / J1-J5
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1Important Information
This chapter contains important information on the safe handling of the product and on this operating
manual.
1.1 Instructions on Documentation
The following instructions will guide you through the entire documentation.
We assume no liability for damages resulting from non-compliance with this operating manual.
Forward this operating manual to the plant operator so that it is available if needed.
1.2 Safekeeping of the Documentation
Keep this operating manual and all other applicable documents safe so that they are available if needed.
1.3 Used Symbols

Information
Instructions and information on the operation of the worm gear
screw jacks.
Attention!
Non-compliance may result in material damage and impair the
operation of the gear unit.
Warning!
Safety instruction: non-compliance may result in serious or fatal
injuries.
QR Barcode
Provides a direct link to the products on our website.
Compatible with QR barcode scanner apps for all Android, Apple
and Windows smart phones / tablets.
1.4 Qualified Staff

Qualified staff according to this operating manual refers to specialists who are familiar with the installation,
assembly, commissioning and operation of the worm gear screw jacks and the hazards involved and who
possess the necessary capabilities on the basis of their specialist training and knowledge of the applicable
standards.

Screw Jacks M0-M5 / J1-J5
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1.5 General Safety Instructions
The following warnings, preventive measures and instructions are intended to guarantee your safety and
to avoid damage to the lifting gear or the components connected to it. This chapter contains warnings and
instructions that generally apply to the handling of the lifting gear.

Intended Use:
The M0-5 / J1-5 worm gear screw jacks are intended only to carry out lifting, lowering, tilting and feeding
motions.
Please find lifting capacities in our catalog or atwww.neff-gewindetriebe.de.
Any other use is considered misuse. The manufacturer assumes no liability for any damage resulting from
misuse.
If the device is installed in machines or plants, commissioning is prohibited until it is determined that it
complies with the EC machinery directive.
Attention!
Requirement according to the German accident prevention regulations VBG14 / VBG 70:
If worm gear screw jacks are operated in theatre stages (VBG 70), lifting platforms (VBG 14) or lifting
equipment where there is a danger to persons, we generally recommend using a safety nut for fall
protection.
Attention!
This operating manual must be kept close to the device and be easily accessible and available to all users.
Attention!
Risk of damage to the lifting gear resulting from storage and transport.
Correct storage, installation and assembly as well as diligent operation and maintenance are prerequisites
for the trouble-free and safe operation of the worm gear screw jacks.
The worm gear screw jack must be protected against mechanical impacts and vibrations during transport
and storage.
Warning!
Work on live components:
E.g. installation of limit switches or a drive unit must only be carried out by trained electricians.

Screw Jacks M0-M5 / J1-J5
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2Overview of the Worm Gear Screw Jacks

Description of a Worm Gear Screw Jack:
Neff worm gear screw jacks are used for applications where precise lifting, lowering, tilting and feeding
motions are required. Our standard range comprises 11 models (Multi 0-5 / Jumbo 1-5). The cubic housing
that is machined on 4 sides allows for the installation of motors, gears or pressure transducers. All models
are designed to cater for pressure and tensile loads as well as position-independent operation.
Basically, 2 different movement principles have to be distinguished:
Axially moving screw
TGS trapezoidal screw
TGS-N standard model
TGS-V protected
against distortion
KGS ball screw
KGS-N standard model
KGS-V protected
against distortion
Rotating screw
TGS trapezoidal screw
TGS-R rotating screw
KGS ball screw
KGS-R rotating screw

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3Design of the Worm Gear Screw Jack
SHG-TGS-N model (standard)
Position
Designation
1
Housing
2
Worm gear
3
Bering cover
4
Axial grooved ball bearing
5
Worm gear shaft
6
Grooved ball bearing or taper roller bearing
7
Snap ring acc. to DIN 471
8
Radial shaft seal ring acc. to DIN 3760
9
Grub screw
10
Lubrication nipple
11
Trapezoidal screw
12
Cover tube
13
Cover tube end cap
14
Sliding bearing
15
Fitted key acc. to DIN 6885
16
Mounting plate
17
Grub screw for mounting plate

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4Assembly
4.1 General Assembly Instructions

The worm gear screw jack is fastened via the housing or other fastening components (mounting plates or
cardan adapters, see QR code below). The housing always needs to be screwed to a machined surface (not
to rolled steel profiles or similar) in order to avoid misalignment or noise.
Depending on the respective application, the worm gear screw jack and the screw have to be precisely
aligned at a right angle or in parallel to the machine component and tightened during assembly.
The tolerances of the four assembly sides correspond to the DIN ISO 2768-mH standard.
Size
M0
M1
M2
M3
M4
M5
J1
J2
J3
J4
J5
Bolts
(min. 8.8)
M6
M8
M8
M10
M12
M20
M24
M30
M30
M36
M42
Length of
engagement
12
13
15
15
16
30
40
45
45
54
80
Max. torque in Nm
10
25
25
50
80
400
730
1450
1450
2600
4000
The torques mentioned in the table are only rough and nonbinding guidelines –see VDI 2230.

Lateral forces have to be absorbed by suitable guiderails; otherwise the device lifecycle would be shortened.
Attention!
The lubrication nipples must always be accessible during operation.
Attention!
Do not hammer the shaft end or the screw when aligning the worm gear screw jack.
QR barcode to Neff fastenings: QR barcode to Neff attachments:

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4.2 Mounting Several Worm Gear Screw Jacks in Parallel
Requirement:
One worm gear screw jack is already installed and fastened as described in chapter 4.

1. Bring the second worm gear screw jack into the planned position, but do not fasten it yet.
2. If rotating screws are used, bring the travelling nuts into the same position.
3. Push the coupling or drive shaft onto the worm gear shaft of the worm gear screw jack that is already
fastened.
4. Push the coupling or drive shaft onto the worm gear shaft of the second worm gear screw jack.
5. Fasten the worm gear screw jack.
6. Repeat steps 1-5 with any other gear units.
Attention!
Check the sense of rotation of all lifting elements before assembly.
Attention!
Use torsionally flexible couplings, drive shafts or cardan shafts in order to compensate for any misalignment
of the worm gear screw jackets.
Attention!
Observe the lubricating film and screw temperature during run-in. If the screw quickly runs dry (or if there
are loud running noises with ball screws) and if the temperature is increased despite observing duty time
and permissible power, this indicates impermissible lateral forces.
QR barcode to Neff couplings: QR barcode to Neff drive shafts:

Screw Jacks M0-M5 / J1-J5
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4.3 Screw Jacks with safety nut (optional with limit switch)
Sicherheitsfangmuttern nach VBG14 oder VBG70 Anforderungen sind nur auf Anfrage verfügbar.
Wenn nicht anders angegeben, werden unsere Standard-Sicherheitsfangmuttern versendet.
Hierbei müssen die technischen Daten der Sicherheitsfangmutter immer mit den bestehenden
Anforderungen überprüft werden.
Standard-Sicherheitsfangmutter mit Trapez- oder Gleitgewinde:
Die Sicherheitsfangmutter läuft ohne axiale Belastung und damit verschleißfrei mit der Laufmutter mit.
Bei zunehmender Abnutzung der Laufmutter (Trapez- oder Gleitgewindeausführung) verringert sich der
Abstand X zwischen beiden Muttern.
Bei einer Verringerung von 25% des Abstand X ist die Laufmutter auszutauschen.
Dazu ist das Maß X bei Inbetriebnahme zu protokolieren und über einen Wartungsplan regelmäßig zu
überwachen
Sollten die Gewindegänge der Laufmutter aufgrund überhöhtem Verschleiß oder zu hoher Last
durchbrechen, fängt die Sicherheitsfangmutter die aufliegende Last auf.
Technische Daten:
Gewindebezeichnung:
Maß X:
Trapezgewinde: Tr12 x X –Tr50 x X:
4mm
Trapezgewinde Tr>50 x X:
8mm
Kugelgewinde:
Abstand X
=
Kugelgröße
Dw
Standard-Sicherheitsfangmutter mit Kugelgewinde:
Sicherheitsfangmuttern für Kugelgewindemuttern werden immer individuell nach Einsatzfall und
Kugelgröße gefertigt.
In der Regel blockiert der Kugelgewindetrieb bei Ausfall und macht sich durch eine überhöhte
Leistungsaufnahme des Motors bemerkbar.
Der Sicherheitsabstand X wird immer nach der Größe der Kugel gerichtet.
Eine optische Verschleißüberwachung ist aufgrund der Rollreibung nur bei Kugelbruch oder kompletter
Zerstörung der Umlenkstücke möglich.
Aus diesem Grund empfehlen wir eine Drehmomentüberwachung in der Motorsteuerung zu
integrieren.
Die Sicherheitsfangmuttern sind nach der maximalen statischen Last der Kugelgewindemutter ausgelegt
und fangen bei Ausfall der Mutter die Last auf.

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Standard-Sicherheitsfangmutter mit Rollenstößel-Endschalter:
Sicherheitsfangmuttern mit Rollenstößel-Endschalter für Anwendungsfälle, wenn eine optische
Verschleißkontrolle nicht mehr möglich oder zulässig ist.
Der mechanische Rollendschalter muss als Zwangsöffner angeschlossen werden.
Der Endschalter ist verstellbar und sollte einen Mindestbetätigungshub von 2,6mm nicht
unterschreiten.
Der Endschalter muss mit dem Mindestbetätigungshub von 2,6mm und dem Maß X eingestellt werden.
Technische Daten Rollenstößel-Endschalter:
-Mindestbetätigungshub: 2,6 ±0,5mm
-Differenzhub: 0,85 ±0,25mm
-Mindesteinschaltkraft: 1N
-Anschluss: 5 adrig (Braun/Blau: Schließer;
Schwarz/Schwarz: Öffner; Grün/Gelb:
Schutzleiter)
-Schaltvermögen: NFC 63146
Achtung!
Optische Verschleißkontrolle über Wartungsplan dokumentieren.
Achtung!
Bei der Ausführung Sicherheitsfangmutter mit Endschalter nur als Öffner anschließen.
Achtung!
Endschalter ist bei Auslieferung nur voreingestellt. Vor der Inbetriebnahme ist die Betätigungsschaltung des
Endschalter bei simuliertem Mutterdurchbruch (Verringerung des Maß X auf 0, bzw. Verschleiß von 25% des
Maß X) zu kontrollieren und protokolieren.

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4.4 Screw Jacks with telescopic screw
NEFF Spindelhubgetriebe mit Teleskopgewindespindeln eignen sich für große Hübe bei gleichzeitig
geringen Einbaumaßen.
Seitenkräfte müssen durch externe Teleskopführungen aufgenommen werden.
Die Anzahl der Stufen richtet sich nach dem erforderlichen Einbaumaß und der maximalen Hubhöhe.
Die Stufen (Nur Ausführung R-FTr) sind im Bestellcode mit Bsp.: TS4 (4-Stufiger Teleskopgewindetrieb
gekennzeichnet. Die Teleskopgewindespindel S-TEG ist nur in 2-stufiger Ausführung erhältlich.
Spindelhubgetriebe mit mehrstufiger Rohr-Flachtrapezgewindespindel R-FTr:
Die Wartung der mehrstufigen Teleskopgewindespindel entspricht den Wartungsintervallen für
Standard-Trapezgewindespindeln RPTS/RATS.
Dabei sind die einzelnen Teleskopstufen separat zu schmieren.
Ein Trockenlauf der einzelnen Stufen muss verhindert werden. Zu beachten ist das die Teleskopstufe
mit dem kleinsten Durchmesser am Wartungsintensivsten ist.
Technische Daten Rohr-Flachtrapezgewindespindel R-FTr:
Gewindebezeichnung:
Außendurchmesser:
Kerndurchmesser:
Steigung:
Material:
Rohr-
Flachtrapezgewindespindel
R-FTr 30x32
32mm
22
32mm
1.0503
Rohr-
Flachtrapezgewindespindel
R-FTr 60x32
60mm
54
32mm
1.0503
Rohr-
Flachtrapezgewindespindel
R-FTr 80x32
80mm
74
32mm
1.0503
Rohr-
Flachtrapezgewindespindel
R-FTr 100x32
100mm
94
32mm
1.0503
Rohr-
Flachtrapezgewindespindel
R-FTr 120x32
120mm
114
32mm
1.0503
Spindelhubgetriebe mit Synchron-Teleskopgewindespindel S-TEG:
Ausführung mit Gleitgewindetrieb:
Die Wartung der Synchron-Teleskopgewindespindel S-TEG entspricht den Wartungsintervallen für
Standard-Trapezgewindespindeln RPTS/RATS. Dabei sind die einzelnen Teleskopstufen separat zu
schmieren.
Sollte die Ausführung mit Sicherheitsfangmutter verwendet werden und diese aufgrund Durchbruch
aktiv sein, ist durch ein Klemmmechanismus der Trieb nicht mehr bewegungsfähig und muss komplett
ausgetauscht werden.

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5Commissioning
Attention!
Check the operation of the limit switch. If possible, start the worm gear screw jack without any load and
increase the load slowly.
During commissioning, continuously check the operating temperature, power consumption of the motor and
the screw contact pattern.
6Maintenance

With trapezoidal screws, regularly lubricate the screw.
With ball screws (R-Version), observe the following guideline: lubricate approx. every 200 hours with
1ml per 10mm of screw diameter. For N-Version: Ball screw with lifetime lubrication
Approx. 5 operating hours after commissioning: Retighten all attachment bolts.
After approx. 200 operating hours or 1 year (sooner in tough operating conditions): Check the screw
nut for signs of wear and tear.
Clean the screw of old grease and relubricate.
After approx. 5 years: Disassemble gear, clean it of old grease and relubricate:
1. Remove the two grub screws at the bearing cover
2. Take the screw out (remove screw protection if required).
3. Unscrew the bearing cover.
4. Remove the old grease.
5. Refill with new grease.
6. Strongly press the bearing cover down (10 times the normal contact force).
7. Loosen the bearing cover again.
8. Put the bearing cover into place and fasten it with two grub screws.
Attention!
When assembling the bearing cover, make sure it fits smoothly and that there is no axial play.
Attention!
Change the screw nut if the axial play exceeds 1/4 of the thread pitch (trapezoidal thread).

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6.1 Lubricants and Fill Quantities

Types of factory grease:
Worm gear screw jacks / trapezoidal screws:
NEFF Grease 2
Safety data sheet:
Ball screws:
NEFF Grease 2/3
Safety data sheet:

Fill quantities:
Type
M0
M1
M2
M3
M4
M5
J1
J2
J3
J4
J5
Fill quantities
grease
in gr.
15
45
70
130
520
1050
1100
1400
1450
2500
5000
Fill quantities
oil
in gr.
-
-
75
140
370
850
-
-
-
-
-

In addition to our factory lubricants, other equivalent brand lubricants may also be used.
This only applies if they are compared to the data sheets of the above manufacturers.

To much grease increases friction and therefore causes an increase in temperature. There is a sufficient
amount of lubricant when a small amount of grease begins to exit at the sealing lips.

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7Malfunctions

Service: Should malfunctions occur during operation, first try to identify the manner of the malfunction with
the table below and to repair it. If it is a malfunction you can not repair, please contact our technical service
(see last page).
Malfunction
Cause
Remedy
Unusual, constant running
noises.
Rolling / grinding: Bearing
damage
Tapping: Irregularity in
gearing
Check grease fill level.
Consult the technical service.
Unusual, irregular running
noises.
Foreign object in the grease.
Check grease fill level.
Stop drive.
Consult the technical service.
Unusually high temperature at
the housing.
Not enough grease.
Defective gearing or
bearing.
Check and correct grease filling.
Consult the technical service.
Grease or oil exists at the shaft
seal ring.
Defective sealing.
Consult the technical service.
Grease or oil exists at the shaft
seal ring and at the screw.
Too much grease in the gear.
Check and correct grease fill
level.
Consult the technical service.
Trapezoidal screw quickly runs
dry.
Assembly fault: Impermissible
lateral forces.
Repair assembly fault.
Consult the technical service.
The worm gear shaft does not
turn or the screw turns but does
not move although the worm
gear shaft is turned.
The connection between the
shaft and the hub or the gearing
is broken.
Have the gear repaired.

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8Manufacturer’s Declaration
We hereby declare that the following product:
Worm gear screw jack, version M and J
with trapezoidal screws or ball screws
model N, R or V
in the sizes
M0 –M5, J1 –J5
for lifting and lowering loads
was manufactured in accordance with the EC machinery directive 2006/42/EC annex II B on incomplete
machinery.
This incomplete machinery must not be commissioned until the machine it is to be incorporated in has been
declared to comply with the provisions of the EC machinery directive, the harmonized standards, European
standards or the applicable national standards.
The manufacturer undertakes to forward the documentation on the incomplete machinery to national
authorities on request. The technical documentation was created according to annex VII B.
Person responsible for documentation:
Andreas Ries, Director of quality management
Address of the person responsible for documentation:
Neff Gewindetriebe GmbH
Karl-Benz-Str. 24
71093 Weil im Schönbuch
Germany
The following harmonized standards have been applied:
DIN EN ISO 12100-1 Safety of machinery –Basic concepts, general principles for design, part 1: Basic
terminology, methodology
DIN EN ISO 12100-2 Safety of machinery –Basic concepts, general principles for design, part 2: Technical
principles and specifications
The following national standards, guidelines and specifications have been applied:
BGV D8 Accident prevention regulations for hoist gears, lifting and towing equipment
Neff Gewindetriebe GmbH
Karl-Benz-Str. 24
71093 Weil im Schönbuch
+49(0)7157/53890-0
Weil im Schönbuch, 29.08.2012
Hartmut Wandel, Director