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NEFF High Speed Screw Jack G1-G3 

 
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 G1-G3 High Speed Screw Jacks are intended only to carry out lifting, lowering, tilting and 
feeding motions. 
Please find lifting capacities in our catalog or at

www.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 High Speed 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 High Speed Screw Jacks. 
The High Speed Screw Jacks 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.

 

 

 

Summary of Contents for G1

Page 1: ...High Speed Screw Jack G1 G3 Model N V R Operating Manuel NEFF High Speed Screw Jacks G1 G3 Version N V R ...

Page 2: ...the High Speed Screw Jacks 4 3 Setup High Speed Screw Jack 5 3 1 Version R rotating spindle 5 3 2 Version N VK lifting spindle 5 4 Assembly 6 4 1 General Assembly Instructions 6 4 2 Assembly guide 7 4 3 Tolerance of position 7 4 4 Mounting Several High Speed Screw Jacks in Parallel 8 4 5 Disassembly the Screw 9 5 Commissioning 10 6 Maintenance 10 6 1 Lubricants and Fill Quantities 11 7 Malfunction...

Page 3: ...d 1 3 Used Symbols Information Instructions and information on the operation of the High Speed 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 A...

Page 4: ... complies with the EC machinery directive Attention Requirement according to the German accident prevention regulations VBG14 VBG 70 If High Speed 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 de...

Page 5: ...ned 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 Rotating screw TGS trapezoidal screw TGS R rotating screw KGS ball screw KGS R rotating screw Axially moving screw TGS trapezoidal screw TGS N s...

Page 6: ...e bevel gear is seated on a hollow shaft which is attached via a feather key with the spindle 3 2 Version N VK lifting spindle Neff High Speed Screw Jacks Version N VK with lifting spindle are equipped with spiral toothed bevel gear gear oil lubrication and greased spindle For Bevel gear Position RU Bevel gear wheel above from the spindle side By turning the drive shaft with right rotation the bev...

Page 7: ...gle 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 G1 G2 G3 Bolts min 8 8 M10 M12 M20 Length of engagement 15 16 30 Max torque in Nm 50 80 400 The torques mentioned in the table are only rough and nonbinding guidelines see VDI 2230 Lateral forces have to be absorbed by suitable guiderai...

Page 8: ...ft must be easy and possible to turn evenly over the entire stroke length 5 For trapezoidal spindle Clean and lubricate the spindle over the entire stroke length 6 For ball screws Clean the spindle over the entire stroke length and lubricate the ball nut 7 Check the oil level in the gear box 8 Replace the oil screw plug with the vent valve thereby making sure that the vent valve is freely accessib...

Page 9: ...to the bevel gear shaft of the second High Speed Screw Jack 13 Fasten the High Speed Screw Jack 14 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 High Speed Screw Jacks Attention Observe the lubricati...

Page 10: ...neck with a sharp screw driver 1 Loosen the threaded screw 3 from the spindle mounting nut 4 Remove the spindle mounting nut 4 with a face spanner Pull the spindle 5 out of the housing Version N V lifting spindle Loosen the spindle mounting Loosen the gard tube from the gear housing Unscrew the spindle out of the gear housing ...

Page 11: ...ng block must be regularly lubricated Move the Screw Jack to the start position carefully disount the square pipe plug and lubricate through the recesses in the anti rotating block Prevent dry running Recommendation for the interval check once a month and if necessary relubricate depending on application Approx 5 operating hours after commissioning Retighten all attachment bolts After approx 50 10...

Page 12: ... Screw Jacks with ball screws Screw NEFF Grease 2 3 Follow the QR Code for Safety data sheet Bevel gear Aral Degol GS220 Safety data sheet www neff gewindetriebe de Fill quantities Type G1 G2 G3 Fill quantities in liter 0 15 0 5 3 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 manufactu...

Page 13: ...ive Consult the technical service Unusually high temperature at the housing Not enough oil Defective gearing or bearing Check and correct oil filling Consult the technical service Grease or oil exists at the shaft seal ring Defective sealing Consult the technical service Oil exists at the shaft seal ring and at the screw Too much oil in the gear Check and correct oli fill level Consult the technic...

Page 14: ...ational authorities on request The technical documentation was created according to annex VII B Person responsible for documentation Andreas Ries QA manager 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 pri...

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