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Spring Set Electric Brakes (FEA) product page.

Fail-Safe Multiple Disc
Spring Set Electric Brakes (FEA) Specifications

Advantages

  • Highly repetitive, spring-set brake
  • Unique end-plate design allows easy wear adjustment
  • Stationary field eliminates need for brushes and rings
  • Stationary cylinder assembly
  • Highest torque in the smallest space within the industry
  • Completely assembled, ready to install
  • No levers, cams or highly stressed parts

Operation

  • Torque range 12 lb. ft. - 600 lb. ft.
  • Positive engagement / disengagement possible at any speed
  • Exclusive MAXITORQ® long-life floating discs pack for low hear, low neutral drag and consistent release
  • Runs in both rotation directions, wet or dry
  • Spring applied, electrically released
Fail-Safe Electric Brake Dimensions

Specifications / Dimensions

Model Dyn. Torque (lb. ft.) St. Torque (lb. ft.)
A

B

C
Min. Axial Position
D
Bores Keyway Watts
FEA-0375 6 12 3.79688 2.56250 4.06250 .37500 3/4 or 7/8 3/16 x 3/32 40
FEA-0425 12 4.35938 2.75000 4.62500 .31250 1 or 1 1/8 3/16 or 3/32 40
FEA-0475 25 50 4.28213 3.06250 5.18750 .43750 1 1/4 or 1 3/8 1/4 or 1/8 50
FEA-0625 50 100 6.35938 3.62500 6.75000 .50000 1 3/4 or 1 7/8 3/8 or 3/16 50
FEA-0800 120 240 8.09375 4.06250 8.50000 .50000 2 or 2 1/4 7/16 x 7/32 80

All models offer 100 or 24 D.C. volts. All Fail-Safe Coils will operate at rated voltage ± 10%.
Old part designation was FEMA. Dyn = Dynamic. St = Static. Models represent clutch numbers.

FEA Electric Brake Flanges
Internal Flange
Drive Cup # A B (b.c.) Screw Size Holes C D E F Slots
EMA-0375-106-30 4.250 - 4.248 3.067 - 3.057 1/4 3 2.017 - 2.015 4.188 1.188 .188 8
EMA-0425-106-30 4.750 - 4.748 3.630 - 3.620 1/4 3 2.517 - 2.515 4.688 1.250 .188 8
EMA-0475-106-30 5.250 - 5.248 3.942 - 3.932 5/16 3 2.517 - 2.515 5.188 1.375 .250 8
EMA-0625-106-30 6.812 - 6.810 5.317 - 5.307 3/8 4 3.767 - 3.765 6.750 1.656 .313 8
EMA-0800-106-30 8.562 - 8.560 6.255 - 6.245 1/2 4 4.517 - 4.515 8.500 1.703 .313 12
EMA-0950-106-30 10.062 - 10.060 8.067 - 8.057 1/2 4 5.517 - 5.515 10.00 1.781 .313 12
EMA-1150-106-30 11.812 - 11.809 9.817 - 9.807 1/2 6 8.017 - 8.015 11.75 2 .313 12

Standard hardened MAXITORQ® Electric Clutch Cups are designed especially for use with electric brakes and electric motor brakes. Available with internal or external flanges and provided with mounting bolt holes, these cups can be quickly adapted to various types of driven or driving members. We offer these cups as an economical and simple way of adapting our clutches and brakes to your conditions.

External Flange
Drive Cup # A B (b.c.) Screw Size Holes C D E F Slots
EMA-0375-106-20 5.625 - 5.623 4.880 - 4.870 1/4 3 3.814 - 3.812 4.188 1.188 .250 8
EMA-0425-106-20 6.125 - 6.123 5.380 - 5.370 1/4 4 4.314 - 4.312 4.688 1.250 .250 8
EMA-0475-106-20 6.875 - 6.873 6.005 - 5.995 5/16 4 4.814 - 4.812 5.188 1.375 .250 8
EMA-0625-106-20 8.500 - 8.498 7.692 - 7.982 3/8 4 6.377 - 6.375 6.750 1.656 .313 8
EMA-0800-106-20 10.625 - 10.623 9.630 - 9.620 1/2 4 8.095 - 8.093 8.500 1.781 .313 12
EMA-0950-106-20 12.250 - 12.248 11.130 - 11.120 1/2 4 9.533 - 9.531 10.00 1.781 .313 12
EMA-1150-106-20 14.248 - 14.247 13.005 - 12.995 1/2 6 11.253 - 11.250 11.75 2 .375 12

External Flange Cup for Model FEA 0265 available upon request.

In addition to our standard Multiple Disc Electric Brakes (EMA), our engineering department can custom design and manufacture a new component to meet your specific requirements. If you have further questions or would like to discuss your specific needs, please contact us.


Go Back Arrow Return to the main Fail-Safe Multiple Disc
Spring Set Electric Brakes (FEA) product page.