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GLISH
R320103169/2020-08
| Linear modules MKK/MKR-xxx-NN-3
Bosch Rexroth AG
29/62
A
B
2
4
3
1
1
2
3
41
13
4
20
130
6
120
20
Ø8
30
160
6
NOTE
Excessive belt pulley preloading can cause the drive journal to break at the product or the motor!
Damage to the product.
f
Observe permissible limits!
Fig� 30:
Tensioning the belt
1.
Screw suitable screws (
2
) through, for example, a clamping bar (
3
) into the two motor bars (
1
).
2.
By tightening the screws (
2
) evenly, the motor is moved away from the linear motion system (
LS
) and so the
toothed belt is tensioned. Set the belt frequency f using a frequency measuring instrument (R913057897)
according to the note inside the housing and tighten the motor mounting screws (
4
).
Suggestion for clamping bar (3)
7.2.4
Tensioning the belt
7.2.5
Attaching the cover
of the belt side drive
with timing belt
LS
f
Install all caps to the housing of
the belt side drive.
Versions:
A = Without support bearing
B = With support bearing
For functional checks
observe chapter 9 and 10.
Fig� 31:
Attaching the cover of the belt side drive with timing belt
The belt frequency or preload force of the toothed belt depends on the size of the unit, the motor, belt
pulleys, and on the torque. It is indicated on the inside of the cover of the belt side drive. If the timing belt
side drive is not positioned horizontally on assembly, make allowance for the dead weight of the motor.
Tightening torques
!
17.1
Toothed belt pre-tension
f
12345
67890
23987
!
