Warner Electric ERD–Electrically Released Brakes - Manual (Page 4)

4 Warner Electric • 800-825-9050 819-0453
Torque Adjustment
Each brake is factory set to its nominal torque
rating as listed under ‘Specifications”. VAR 02
brakes are factory set at 50% of listed torque.
The torque of Variation 2 can be reduced by
loosening the central nut to the extent listed
in Figure 2.
ERD Variation 2 - lb.in. Variation 2
Size Reduction per Number of detents
detent per complete revolution
5 4.5 4
10 11 4
20 11 4
35 21 4
60 16 6
100 22 6
170 27 8
300 38 8
8
5
2
4
6
3
1
9
VAR 2
Single torque adjust-
ment nut
• Torque reduction
up to 50% by
loosening nut
• Available in all sizes
VAR 0
No torque adjust-
ment possible
• Available in all sizes
Figure 2 - Torque Adjustment)
Maintenance
Wear in the friction material causes an increase
in the airgap. Before reaching the maximum air-
gap, it should be readjusted (see specifications).
• The brake must remain free from oil, grease,
and abrasive dust at all times.
• Check the airgap periodically and reset as
required per instructions found in Step 5 on
page 3. Inspection interval(s) depend on the
frequency of brake application.
• Check friction material thickness periodically
per dimension M and replace when below the
minimum shown below.
Minimum Minimum
Thickness Thickness
ERD Size Millimeters Inches
5 0.22 0.009
10 0.21 0.008
20 0.31 0.012
35 0.22 0.009
60 0.24 0.009
100 0.24 0.009
170 0.31 0.012
300 0.32 0.013
Table 3: Minimum Acceptable Friction Carrier
Thickness in Inches
The theoretical reduction in airgap for 0.5 turn of
the spacer screw will be as follows:
Brake Thread Reduction Inches
ERD5 M6 X 0.5 0.25 0.010
ERD10 M8 X 0.75 0.375 0.015
ERD20 M10 X 0.75 0.375 0.015
ERD35 M10 X 0.75 0.375 0.015
ERD60 M12 X 1 0.5 0.020
ERD100 M12 X1 0.5 0.020
ERD170 M12 X 1 0.5 0.020
ERD300 M16 X 1 0.5 0.020
Table 2: Airgap Adjustment Specifications