Datum: 29.05.2006
Installation/Maintenance
of Precision Screw Jacks
(HSG)
Seite 3 von 4
T 7-031-03
INKOMA Maschinenbau GmbH
Neue Reihe 44,
D-38162 Schandelah
Tel.: 0 53 06/ 92 21 - 0
Fax: 0 53 06/ 92 21 - 50
Internet: www.INKOMA.de
2 Ball-Screw Spindles (KGS)
Screw Jacks with ball-screw spindles must be installed avoiding radial or eccentric loads on the spindle. Ball-screws are
only
suitable
for the transmission of
axial forces
. Limit switches should be provided to prevent overrunning of the lift range and
consequent damage to the spindle. The nut must not be installed without the use of a guide bush over the spindle end. Do not
apply any force. Do not remove the guide sleeve until the nut is completely engaged with the spindle. Spindles must be
supported so that no bending is possible. Spindle should not lie directly on the nut.
The guide tubes, located on the outside of the nut, must not be damaged. Disassembly of the guide tubes can only be carried
out at the factory. Ball-screws are sensitive to dirt and damage. Protect spindles from dirt contamination. Remove contamination
with petrol, thin oil or flushing media.
Do not use white spirit or other paint solvents - these will damage the spindle!
Ball-screws must be precisely aligned with their guides.
Ball-screws are normally supplied with the nut assembled. Should dismounting be necessary, please seek advice from us.
To maintain effective operation, the ball-screw must be adequately lubrication (same lubrication as for ball bearings).
Do
not
use greases with MoS2 (Molybdenum Di-Sulphide) or graphite additives. Normally lubricants can be selected which
correspond to those for other machine functions. Life time lubrication of the nut is not possible since there will always be some
loss of lubricant (for lubrication see 1.4).
NOTE:
•
Do not disassemble the guide tube mechanism.
•
Do not replace missing balls with new ones. The entire set must be replaced.
3 Spindle Protection
Bellows and spiral protective sleeves prevent dirt contamination of the spindle.
Bellows
Check bellows regularly for cracks. Replace if necessary. For high lift speeds, provision for ‘breathing’ bellows will be
made during manufacture.
Spiral Sleeves
Effective protection is only guaranteed if the sleeves are lubricated.
Assembly
•
Spiral sleeves are supplied compressed along their length and secured with ties.
•
Slide spiral sleeve over spindle in the secured state.
•
The ties must only be removed when the sleeve has been installed and placed under end pressure
.
Please take care when releasing the ties.
•
Spiral sleeves must not be unwound
•
Spiral sleeves will require approx 20 movements to achieve normal operation.
•
Before commissioning oil lightly !
