ZIMM Screw Jack
6 Installation
2015-01
Version 1.2
23
4. Tighten the securing bolts on the end bearing plate.
5. Retract the nut to just before the gearbox (3).
6. Tighten the securing bolts on the gearbox casing.
7. Repeat the trial run (see section "6.5 Trial running", page 21).
6.7
Commissioning
The ZIMM Screw Jack together with its attachments must be
installed and connected.
The spindle must be greased (for more information see section
"7.2 Lubrication", page 25).
The trial run must have been completed successfully.
CAUTION
High forces are generated!
Damage to the ZIMM Screw Jack.
Make sure that the limit switch (optional) and end bearings are not
overrun.
Make sure that attachments do not collide with other parts.
1. Check all screw fastenings once again.
2. Perform a trial run with operating load.
When doing this, comply with the following:
– Torque must be constant.
– Current consumption must be constant.
– Operating temperature must be within the normal range.
– The limit switch (if fitted) or the end bearings must not be
overrun.
3. Regrease the spindle after the first 2 operating hours at medium
load.
6.8
Running-in phase
The running-in phase of the gearbox and spindle lasts as a rule between
20 and 50 operating hours. A higher torque and higher operating
temperature must be expected during this period.
The torque may be up to 50% higher during the running-in phase than in
subsequent operation.
