Warner Electric ERS Electrically Released Brakes - Manual (Page 5)

5 Warner Electric • 800-825-9050 819-0337
Drive Hub Data
A Mating Key B C Set
Model Bore (Not furnished) Nom. Nom. Screws Size Torque
ERS-26 .2525/ .2505 1/16 x 1/16 .600 .135 6-32 10
.3150/ .3130 1/16 x 1/16 x 1/8 lb. in.
.3775/ .3755 3/32 x 3/32
ERS-42 .3775/ .3755 3/32 x 3/32 .700 .150 8-32 20
.5025/ .5005 1/8 x 1/8 x 3/16 lb. in.
.6275/ .6255 3/16 x 3/16
.7525/ .7505 3/16 x 3/16
ERS-49 .3775/ .3755 3/32 x 3/32 .800 .160 10-32 36
.5025/ .5005 1/8 x 1/8 x 3/16 lb. in.
.6275/ .6255 3/16 x 3/16
.7525/ .7505 3/16 x 3/16
.8775/ .8755 3/16 x 3/16
ERS-57 .5025/ .5005 1/8 x 1/8 .800 .160 10-32 36
.6275/ .6255 3/16 x 3/16 x 3/16 lb. in.
.7525/ .7505 3/16 x 3/16
.8775/ .8755 3/16 x 3/16
1.0025/1.0005 1/4 x 1/4
ERS-68 1.0025/1.0005 1/4 x 1/4 .900 .190 1/4-20 87
1.1275/1.1255 1/4 x 1/4 x 1/4 lb. in.
1.2525/1.2505 1/4 x 1/4
1.3775/1.3755 5/16 x 5/16
1.5025/1.5005 3/8 x 3/8
Note: Hub may be located in any position on shaft as long as the external
and internal splines are 100% engaged.
A B C D
Model Nom. Nom. Holes Nom.
ERS-26 4.000 .935 #4 .100
(101.6) (23.7) (2.6)
ERS-42 5.000 1.450 #6 .144
(127.0) (36.8) (3.7)
ERS-49 6.250 1.575 #8 .193
(158.8) (40.0) (4.9)
ERS-57 7.500 1.825 #10 .193
(190.5) (46.4) (4.9)
ERS-68 9.500 2.500 1/4 .224
(241.3) (63.5) (5.7)
(—) denotes millimeters
Note: Holes for attaching flange to mounting
surface to be provided by customer.
Troubleshooting
Symptom Check
Brake will not release a. Proper voltage at the brake terminal(s).
b. Correct unit voltage matched to power supply.
c. Coil continuity if proper voltage is at the brake leads.
d. Spline for binding. Friction disk must be able to move freely on mating spline.
If the above checks do not determine the cause of the failure, the brake is non-operational and must be replaced.