31 192-550002N10 ETH March 2019
The clamping unit should (after loosening the tensioning screws) be loose. If not,
knock slightly on the loosened screws with a hammer in order to push back the
rear taper ring (not with K1M drive option).
Remove motor / gearbox from the hollow shaft.
ATTENTION! Secure motor/gearbox against dropping!
Remove clamping unit (please refer to Figure 25 Pos.20a & Figure 26 Pos 20a).
Motor / gearbox mounting (ETH100&125)
The ETH100&125 electro cylinder is furnished with tensioned belt.
When mounting the gearbox / motor, the belt must NOT be detensioned or
retensioned.
Dismantle lid (please refer to Figure 25 Pos.4) and screws (please refer to Figure
25 Pos.11).
Clean contact surfaces of motor / gearbox shaft and hollow shaft bore.
Shaft and bores must be free of burrs, dirt and grease.
Insert motor / gearbox into hollow shaft.
with K1M drive option: Insert clamping element (please refer to Figure 26 Pos.
20a) in the hollow shaft on the motor side and slide it up to the exterior stop.
Adjust tensioning element so that the adjusting screw can be tightened via flange
sided mounting holes.
The internal ballscrew is not self-locking!
Always take care, especially in vertical position of the ETH cylinder that the piston
rod must be safeguarded!
Secure motor/gearbox against dropping.
Eye bolts must be used with suitable lifting devices for motors and gearboxes with
Insert and tighten motor fixing screws slightly.
Insert clamping bushing (please refer to Figure 25 Pos.20) into hollow shaft and
slide it up to the inner stop (not with K1M drive option).
Tighten screws crosswise until the inner ring touches the shaft and the outer ring
touches the hub (not with K1M drive option). Secure screws (medium strength)
with locking compound.
Tighten motor fixing screws.
Afterwards tighten tensioning screws of the clamping bushing (please refer to
Figure 25 Pos.20, please refer to Figure 26Pos.20a) crosswise step by step (in
three turns with 1/3, 2/3 and full tightening torque), until the screw tightening
torque (please refer to Table 2) is reached.
You can apply counter pressure with the aid of a hook wrench, which can be
inserted into the bores on the toothed pulley.
Mount lid (please refer to Figure 25 Pos.4) and screws (please refer to Figure
25 Pos.11).
Tightening torque of motor flange/clamping bushing
Motor flange option
Screw tightening torques
Clamping bushing (Pos. 20)
ETH100
K1H, K1J, K1K, K1L, P1C, P1D,
P1J
Hexagon socket SW: 5 mm M6, 15 Nm
ETH125
K1L, P1C, P1D, P1K Hexagon socket SW: 5 mm M6, 15 Nm
K1M Hexagon socket SW: 8 mm M16, 21 Nm
Table 2: Tightening torques motor flanges/ clamping bushing
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