Gear Units With Shrink Disk - BONFIGLIOLI HDP Series Installation Use And Service Manual

The bolt (1) and spacer (2) are to be supplied by customer.
Secure the hollow shaft to the machine shaft in an axial direction.
Install suitable devices to secure the hollow shaft to the machine shaft in an axial direction and prevent
accidental decoupling.

5.1.4 GEAR UNITS WITH SHRINK DISK

Gear units may be specified with a shrink disk for coupling onto the driven shaft. When installing a unit
of this type, proceed as follows:
1. Loosen the locking bolts gradually and in sequence and remove the entire shrink disk.
2. Clean and carefully degrease the coupling surface between the gear unit's output shaft and the
customer shaft.
Do not use molybdenum bisulphide or any other grease which would affect the friction
coefficient of the coupling surfaces and reduce the performance of the shrink disk.
3. Fit the gear unit onto the machine sliding its output shaft onto the driven shaft.
4. Fit the shrink disk to the gear unit shaft.
5. Fully tighten down the shrink disk bolts gradually following a circular sequence using a torque
wrench.
This operation usually must be repeated several times to reach the tightening torque M
specified in the table below:
Torque the shrink disc as prescribed to assure axial fixing of the transmission, in the absence of
external loads.
In the presence of external axial loads, vibration, safety problems, requirements for
enhanced reliability, or unfavourable mounting positions (e.g. V5 virtual mounting positions,
output shaft directed downwards), install suitable devices to secure the shaft in an axial
direction and prevent accidental decoupling.
The shrink disc coupling must not be disassembled nor lubricated before being reinstalled.
Disassemble and clean the shrink plate only when it is fouled.
When cleaning and/or during maintenance lubricate only the sliding surfaces of the
shrink disc using a solid lubricant with friction value of µ = 0.04, such as Klüber Molykombin
UMFT 1 (or an equivalent product having the same characteristics and durability of
performance)
HDP 60
Mt [Nm] 35
HDP 70 HDP 80
35 69
t
HDP 90
127
15