R&M Materials Handling WIRE ROPE HOISTS Service - Manual (Page 34)

R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: (937) 328-5100
FAX: (937) 325-5319
34/130
R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
Brake type and size Original thickness of
the brake disc
[mm]
Minimum thickness of
the brake disc
[mm]
Tightening torque for
brake fixing screws
[Nm] / [lbf.ft]
Tightening torque for
anchor plate screws
[Nm] / [lbf.ft]
NM38741NR# 11.15 10.4 22 / 16.2 5.0 / 3.7
NM38751NR# 14.00 13.2 22 / 16.2 11.0 / 8.1
NM38753NR# 14.00 13.6 22 / 16.2 11,0 / 8.1
• Check the physical condition of the teeth on the brake disc.
• Check the wear of the friction plate (6). Replace the friction disc if it has worn thin.
• Clean the inside of the brake (4).
• Remove the fixing screws (8).
• Remove the anchor plate (7).
• Clean the anchor plate and brake armature.
• Re-assemble the brake.
• Clean the brake disc (5) and the friction plate (6)
• Re-assemble in the reverse order. Assemble the friction plate (6) text "REIBSEITE" against the
friction disc (5) (if applicable).
5.10 Second brake
The second brake is an electromagnetic safety brake, which is closed by spring force. The second brake
operates as holding brake when the motion has stopped and the main brake has closed.
The second brake closes with a small delay and opens simultaneously with the main brake.
The second brake is attached to the primary shaft of the hoisting gear, whereas the hoisting motor with
the main brake is attached to the other end of the shaft.
1 2
c_brs01
3
1. Brake
2. Hoisting gear
3.Hoisting motor
Brake type and size Original thickness of the
brake disc
[mm]
Minimum thickness of
the brake disc
[mm]
Tightening torque for
brake fixing screws
[Nm] / [lbf.ft]
NM39330NR# 10.40 10,1 9 / 6.6