Assembly instructions
(
translation
)
HT / SHT Gearboxes
Doc. No.: 1001
Version 2 dated 21/01/2019
Page 8/15
and without a keyway or spline profile. The torque transmission as well
as axial securing takes place backlash-free by clamping the customer
shaft in the hollow shaft by means of a shrink disc. This shrink disc cre-
ates a frictional connection between the hollow gear shaft and the cus-
tomer's solid shaft by means of taper bushings.
The customer's shaft has to meet the following characteristics:
Yield strength Re ≥ 340 N/mm²
E-Module about 206 kN/mm²
Average surface roughness Ra ≤ 3.2 µm
Shaft tolerance h6 in the area of the shrink disc
DANGER!
Risk of injuries due to a slipping of the shaft. The torque cannot be reli-
ably transmitted, if the shaft is not manufactured according to the re-
quirements indicated above or if the shrink disk is not properly assem-
bled.
Prior to the assembly clean and de-
grease the machine shaft as well as
the hollow gear shaft.
After the shaft has been inserted in-
to the hollow shaft of the gearbox,
the clamping screws of the shrink
disc must be tightened evenly in turn
by ¼ turns until the front face of the
stepped tapered ring is flush with
the front face of the stepped ta-
pered bushing. (Figure 3)
INFO
The assembly of the shrink disc is carried out in a path-controlled man-
ner. It is not necessary to use a torque wrench.
Figure 3: Assembly of the shrink disc