15
5.1.3 - Gear units with shrink disk
Series A and F gear units may be specified with a shrink disk for coupling onto the driven shaft. When instal-
ling 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 coeffi-
cient 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
Mt
specified in the
table below:
A 10
A 20
A 30
A 41
A 50
A 60
A 70
A 80
A 90
Mt
[Nm]
14.5
14.5
14.5
14.5
35
35
35
69
69
F 10
F 20
F 30
F 40
F 50
F 60
F 70
F 80
F 90
Mt
[Nm]
8.5
14.5
14.5
14.5
14.5
35
35
69
69
(A2)
Mt.
5.1.4 - Shaft mounted gear units series F
Anchoring the torque arm
Use the original vibration-damping kit to ensure optimal operation of the assembly, as it is specifi-
cally designed and constructed, along with the gear unit, for operation in explosion hazard areas.
Failure to use the original accessory on gear units classified under 94/9/EC voids the ATEX certi-
fication.
The torque arm shown in the diagram is to be supplied by customer.
Mt
[Nm]
F 10
10
F 20
10
F 30
20
F 40
20
F 50
50
F 60
50
Summary of Contents for A 10
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