Operating Instructions - Low Backlash Planetary Gear Units
11
3
Motor mounting with EK coupling
Proceed in this order:
•
Place motor (4) vertically (motor must have min. true-running accuracy to EN
42955). Use ring (5) to protect the encoder and other mounted components.
•
Check smooth surfaces (6) of the motor and gear unit for scoring and smoothen them
if necessary. Clean and degrease the hollow shaft hole in coupling (11) and motor
shaft (3).
•
Remove one or two of the four closing plugs (2). Turn the coupling (11) with clamping
ring (10) until the bolt head of clamping bolt(s) (8) is in alignment with the mounting
hole in the built-on housing. Unscrew the clamping bolt(s) (8). Motors with a
keyway: Turn the keyway 90° offset in relation to the slot in the coupling.
•
If coupling sleeves (9) are used, make sure that the slots in the coupling sleeve (9)
are in alignment with the slots in the coupling (11) and clamping ring (10). Carefully
slide the gear unit onto the motor shaft (3).
•
Insert bolts between the gear unit and motor and push their heads up to the hole.
Make sure the three oil screw plugs (7) can be accessed later. The oil screw plugs
are located on the top and bottom of the gear unit and on one side.
•
Use a torque wrench (1) to tighten the clamping bolt(s) (8) to the prescribed
tightening torque.
•
Center the gear unit on the coupling. To do this, unscrew the retaining screws and
then retighten in diametrically opposite sequence. Put the plug (2) back in.
All gear units only have one clamping bolt (8) except for types PSF/PSE 21. and PSF/
PSB/PSE 31. with motor shaft diameter
≤
14 mm.
Never drive gear units, couplings, etc. onto the shaft end by hitting them with a
hammer (damage to bearings, housing and the shaft).
Gear unit types PSE, PSF 21. and PSF 31. do not have any oil screw plugs. Gear unit
type PSB has one oil screw plug (7) in the center of the flange block.
Gear unit type
Motor shaft diameter [mm]
Number of clamping
bolts
Tightening torque of
clamping bolt [Nm]
Wrench size
PSF 21./31.
PSB 31.
PSE 21./31.
≤
14
2
14
5
PSF 21./31.
PSB 31.
PSE 21./31.
> 14
1
41
6
PSF 41. - PSF 90.
PSB 41. - PSB 61.
PSE 41. - PSE 61.
≤
32
1
41
6
PSF 41./51./61./70./80./90.
PSB 41./51./61.
PSE 41./51./61.
> 32
1
83
8
