GB
Worm gear screw jack SHE type1 and type2
High-performance screw jack HSE type1 and type2
T13.01.000.0000.0003
2019/04 Rev. Index E
Subject to technical modifications Design changes under reserve Sous réserve de modifications techniques !
21
9.2.2 Standard screw jack with trapezoidal thread screw
Safety test:
The wear of the nut thread in the worm wheel / in the travelling nut needs
to be checked regularly, at least once per year.
Replacement is urgently required once the wear limit has been reached.
X = maximum wear (see Table 9.2.1)
9.2.3 Standard screw jack with ball thread screw
Safety test:
Pay attention to the running noises of the Ku screws during operation. An increase in noise indicates
wear of the Ku nuts. The nuts and screws need to be replaced promptly.
The Ku screws/nuts should generally be exchanged at the end of its service life.
9.2.4 Safety screw jacks
For utilisation in systems in acc. with EN 280, EN1570-1, EN1593; DIN 56950-1
In accordance with BetrSichV, lifting equipment must undergo an examination by an authorised person in
intervals (at least 1x per year) specified by the operator (TRBS 1203-1).
8
9.2.5 Screw jacks with safety nut
1 = Wear indication ring
Safety test:
Check the wear in the screw jacks (dimension x) of the
translation thread in the worm wheel / travelling nut.
Prompt replacement of the carry nut and safety nuts is
required should the safety nut (wear indication ring) align
with the upper and lower edge of the housing or the wear
limit has been reached (dimension X).
Wear limit = X - max. wear
(see Table 9.2.1)
9.2.6 Wear measurement log
We recommend recording the new condition and the results from measuring the wear (dimension
X).
Screw jack 1 Screw jack 2 Screw jack. 3 Screw jack 4 Date/Signature
New condition
Dimension X
Wear measurement
on _____________
Wear measurement
on _____________
Wear measurement
on _____________
Wear measurement
on _____________
9.2.7 Spindle lubrication
Clean the screw with grease evenly with a brush.
We recommend an automatic lubricant dispenser in places of difficult accessibility, a longer power time or in
dirty environments.
Automatic lubricant dispensers are also available with ATEX conformity.
8 We recommend having this check performed by the service department of CMCO.
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