Gearless Lift Machine
WSG-S2.3
Operating Instructions
Seite/page
18
Datum/date
08.10.2013
Stand/version
0.8
Änderungen vorbehalten!
Subject to changes without notice!
7.3. Regreasing the bearings
The anti-friction bearings have been provided with a grease filling at the factory that is sufficient for the
planned service life of the machine. Under normal operating conditions, regreasing is not required or
recommended.
7.4. Replacing the traction sheave
Disassembly
• Disconnect the system and safeguard against accidental
restarting.
• Secure the car and the counter-weight.
• Remove the rope slip-off guards and the rope guards, if
provided.
• Relieve the load on the traction sheave; remove the ropes.
• Support the traction sheave by means of a hoisting gear.
• Remove the three M8 bolts at the pressure disc and the
pressure disc itself.
• Insert two fastening bolts into the outer hole circle of the
pressure disc (1) and into the traction sheave.
• Insert a 4-7 mm spacer (2) between the pressure disc and
the shaft journal.
• Pull off the traction sheave from the tapered shaft seats by
tightening the bolts evenly.
Assembly
• Clean the traction sheave and the motor shaft.
• Support the traction sheave by means of a hoisting gear.
• Insert the feather key into the shaft end.
• Slide the traction sheave onto the motor shaft.
• Fit the pressure disc to the traction sheave and fasten it using three pairs of NORD-LOCK washers and
M 8x25-8.8 bolts. Tighten the bolts alternately around the circle in three torque steps (10, 20 and 25 Nm) as
far as they will go. Tightening torque: 25 Nm
• Replace the ropes and reinstall the rope slip-off guard.
WARNING
The traction sheave can work loose if it is not properly installed.
