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DOK-MOTOR*-ML3********-IT01-EN-P
ML3 Self-Cooled Linear Motors
6.3
Assembly of primary parts
Fastening screws
Frame size
ML3x03
ML3x06
ML3x11
Tab. 6-1:
Installation height ML3 motors
After assembly of the motor components, we recommend to check the mini‐
mum air gap between primary and secondary part.
For this reason, insert a test strip made of non-magnetic material (copper,
plastics, etc.) with a thickness of
●
0.4 ... 0.5 mm
into the air gap between primary and secondary part. The test strip must be
versatile in the air gap on every position of the total path via the complete
surface of the primary part.
With this measure, you ensure the minimum necessary air gap between the
motor components. Furthermore, with this test you will detect a faulty assem‐
bly (e.g. due to dirt under the mounting surface, faulty installation dimension,
insufficient machine rigidity etc.) in time.
In the case of an exceeded installation height and therewith, the
height of the air gap out of the tolerances lead to an expotential
degradation of the linear motor specifications. A too small air gap
can lead to damage or destruction of the motor.
NOTICE
After assembly, check the free movement of the motor components to each
other immediately. Therefore, move the versatile motor components by hand
over the complete traverse path. The versatile motor components must be
freely moveable at each position over the total traverse path - without any
contact to fixed motor components. Furthermore, with this test you will detect
a faulty assembly (e.g. due to dirt under the mounting surface, faulty installa‐
tion dimension, insufficient machine rigidity etc.) in time.
To fasten the primary part, only new, unused screws must be
used.
●
Only use specified screws
●
Tighten all screws crosswise with the necessary tightening
torque - from inside to outside.
●
Lock screw connection with Loctite 243, for example (ob‐
serve the notes of the adhesive manufacturer).
●
When using dowels, make sure that they do not stick up
more than specified. The primary part could be damaged.
●
After assembly, check if any foreign bodies exist between
primary and secondary part.
Bosch Rexroth AG
Installation height "X"
40 mm ± 0.1 mm
40 mm ± 0.1 mm
45 mm ± 0.1 mm
Motor damage due to insufficient air gap be‐
tween primary and secondary part!
(seeTab.
6-2).
33/103
Assembly
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