UNIBRAKE ® AC Motor Brakes
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ALTRA INDUSTRIAL MOTION UNIBRAKE® AC Motor Brakes ALTRA INDUSTRIAL MOTION

Warner Electric UNIBRAKE® Decelerates or Holds Loads When Power is Off C-Face, Power-Off Brakes Page 4-9 Single C-Face Power-Off Brakes are designed to decelerate or hold inertia loads when the power is turned off. The single C-Face mounts on the nondriven end of a motor. Brakes are available from 3 ft. lb. to 15 ft. lb. C-Face, Power-Off Brakes with Heavy-Duty Enclosures Page 10-13 Our Single C-Face Power-Off Brake is also available with cast iron housing for applications involving corrosive environments. The heavy-duty housing also includes o-ring seals to create a dust-tight brake....

Spring Applied — Power-Off Operation Warner Electric spring applied motor brakes are designed to decelerate or park inertial loads when the voltage is turned off, either intentionally or accidentally, as in the case of power failure. The friction disc with the hub is coupled to the motor shaft to be braked but is capable of moving axially. When power is off, a spring force clamps the friction disc between a pressure plate and a stationary plate, hence retarding motion. When an AC voltage is applied, the solenoid creates a Direct Acting magnetic force which releases the friction disk without...

F Series AC Rear-Mounted Brakes with NEMA 2 Housing Aluminum Head-Steel Cover Warner Electric Single C-Face Power-Off Brakes are designed to decelerate or hold inertia loads when the power is turned off. The single C-Face mounts on the non-driven end of a motor. Brakes are available from 3 ft. lb. to 15 ft. lb. Features: • External manual release lever • Totally enclosed construction • Torque adjustable from full-rated torque down to 50% • Single-phase AC coils to provide fast release times and easy wiring • Single C-Face

C-Face Power-Off Brakes F Series AC Rear-Mounted Brakes with NEMA 2 Housing Aluminum Head-Steel Cover Lead Outlet 1/2 - 14 NPT Both Sides (3) .35 Dia. Lead Holes Located as shown on a 2.81 Radius Unibrake AL Head - Steel Cover Warner UNIBRAKE (2) 3/8 - 16 x 2 Long Mounting Bolts Located as Shown on a 5.875 Dia. B.C. 3.44 4.503 Dia. 4.501 Brake Release Lever (2) .38 Dia. Lead Holes Located as shown o 180 apart on a 2.81 Radius. Competitive UNIBRAKE Interchange ® Warner Electric Replacement o 2.94 Clearance Required to Remove Cover Lead Outlet 1/2 - 14 NPT 5/8, 3/4, & 7/8 Bore Sizes with...

4.503 Dia. 4.501 Brake Release Lever C-Face Power-Off Brakes (2) Brake Mounting Holes 1.19 to Pivot Point of Release Lever 5/8, 3/4, & 7/8 Bore Sizes with Standard Key way F Series AC Rear-Mounted Brakes with NEMA 2 Housing (2) .38 Dia. Lead Holes Located Aluminum Head-Steel Cover as shown Competitive 56,100 AL Head - AL Cover 4.41 3.25 Clearance Required to Remove Cover Lead Outlet 1/2 - 14 NPT Both Sides Internal Release Lever 6.87 Dia. .62 6.87 Dia. (4) Brake Mounting Holes on a 5.875 Dia. B.C. 5/8, 3/4, & 7/8 Bore Sizes with Standard Key way (3) .35 Dia. Lead Holes Located as shown on a...

4.503 Dia. 4.501 Brake Release Lever Lead Outlet 1/2 - 14 NPT 5/8, 3/4, & 7/8 Bore Sizes with Standard Keyway (2) Brake Mounting Holes 1.19 to Pivot Point of Release Lever F Series AC Rear-Mounted Brakes with NEMA 1 Housing 1.25 Aluminum Head-Steel Cover (2) .38 Dia. Lead Holes Located as shown o 180 apart on a 2.81 Radius. Competitive 56,300 AL Head - Steel Cover (3) .35 Dia. Lead Holes Located as shown on a 2.81 Radius. Unibrake AL Head - Steel Cover Warner UNIBRAKE (2) 3/8 - 16 x 2 Long Mounting Bolts Located as Shown on a 5.875 Dia. B.C. 3.44 3.85 4.503 Dia. 4.501 Brake Release Lever...

F Series AC Rear-Mounted Brakes with NEMA 2 Housing Cast Iron Head-Steel Cover Warner Electric Single C-Face Power-Off Brakes are designed to decelerate or hold inertia loads when the power is turned off. The single C-Face mounts on the non-driven end of a motor. Brakes are available from 3 ft. lb. to 15 ft. lb. Features: • External manual release lever • Totally enclosed construction • Torque adjustable from full-rated torque down to 50% • Single-phase AC coils to provide fast release times and easy wiring • Single C-Face

Brake Release Lever Optional (2) .48 Dia. Lead Holes Located as shown 180° apart on a 2.81 Radius. C-Face Power-Off Brakes .25 Dia. (2) Brake Mounting Holes 5/8, 3/4, & 7/8 Bore Sizes with Standard Keyway 1.37 to F Series Pivot Lever ACPoint Rear-Mounted Brakes with NEMA 2 Housing 1.25 of Release Cast Iron Head-Steel Cover Competitive 56,400 CI Head - Steel Cover 25 .38 Dia. Lead Hole Located as shown on a 2.81 Radius. 2.94 Clearance Required to Remove Cover Lead Outlet 1/2 - 14 NPT Both Sides (4) Brake Mounting Holes on a 5.875 Dia. B.C. 5/8, 3/4, & 7/8 Bore Sizes with Standard Keyway...

F Series AC Rear-Mounted Brakes with NEMA 2 Housing Cast Iron Head and Cover Warner Electric Single C-Face Power-Off Brake is also available with cast iron housing for applications involving corrosive environments. Brakes are available from 3 ft. lb. to 15 ft. lb. Features: • External manual release lever • Totally enclosed construction • Torque adjustable from full-rated torque down to 50% • Single-phase AC coils to provide fast release times and easy wiring • Single C-Face

Brake Release Lever C-Face Power-Off Brakes with Heavy-Duty Enclosures .25 Dia. (2) Brake Mounting Holes 5/8, 3/4, & 7/8 Bore Sizes with Standard Keyway Optional (2) .48 Dia. Lead Holes Located as shown o 180 apart on a 2.81 Radius. 1.25 of Release Lever F Series AC Rear-Mounted Brakes with NEMA 2 Housing Cast Iron Head and Cover Competitive 56,200 CI Head - CI Cover Nema 2 4.0 Brake Release Lever .31 Dia. Lead Hole Located as shown on a 2.81 Radius. 3.25 Clearance Required to Remove Cover 4.507 4.501 Dia. Lead Outlet 1/2 - 14 NPT Both Sides (4) Brake Mounting Holes Located as Shown on a...

F Series AC Rear-Mounted Brakes with NEMA 4 Housing Cast Iron Head and Cover Warner Electric Single C-Face Power-Off Brake is also available with cast iron housing for applications involving corrosive environments. The heavy-duty housing also includes o-ring seals to create a dust-tight brake. Brakes are available from 3 ft. lb. to 15 ft. lb. Features: • External manual release lever • Totally enclosed construction • Torque adjustable from full-rated torque down to 50% • Single-phase AC coils to provide fast release times and easy wiring • Single C-Face