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MagnaShear® Motor Brakes combine oil shear durability with electric actuation, simple control logic and spring-set load holding. Easy to install, economical to operate, MagnaShear® motor brakes run on 115 VAC, 50 or 60 Hz.. An optional Step Down Transformer is available for other voltages. They fit a wide range of motors, including NEMA U-frame, and T-frame motors.

MagnaShear® Oil Shear Brakes are designed to dissipate the heat buildup that destroy conventional braking devices.
Unit of Measure

Specifications

Bolt Circle FAK

N/A 5.875 in

Hub Bore FU

N/A 0.625 in0.875 in

Minimum Hub Depth FAH

N/A 1.00 in

Maximum Hub Depth FAH

N/A 2.19 in

Static Brake Torque

N/A 6 lb·ft8 lb·ft12 lb·ft

Dynamic Torque

N/A 5 lb·ft7 lb·ft10 lb·ft

Maximum Kinatic Energy (KE) per Engagement

N/A 7,975 ft·lb

Cyclic Inertia

N/A 0.011 lb·ft²

Oil Capacity

N/A 28 fl oz

Input Voltage

N/A 115 VAC

Inrush Current

N/A 2.5 A

Inrush Time

N/A 0.4 s

Holding Current

N/A 0.8 A

Mounting Position

N/A D - Brake Down H - Horizontal U - Brake Up

Manual Release

N/A S - Standard, None

Dimensions A

N/A 9.07 in

Dimensions B

N/A 5.63 in

Dimensions C

N/A 8.84 in

Dimensions D

N/A 3.97 in

Dimensions E

N/A 0.50 in

Dimensions L

N/A 7.96 in

Dimensions U

N/A 0.875 in

Dimensions FU

N/A 7/8 in

Dimensions AK

N/A 4.500 in

Dimensions FAK

N/A 4.50 in

Dimensions AG

N/A 7.00 in

Dimensions AA

N/A 3.44 in

Dimensions AB

N/A 4.04 in

Dimensions F

N/A 3.44 in

Dimensions G

N/A 6.78 in

Typical Applications

N/A Chemical Dip Tanks Cranes and Hoists

Features

Features

N/A 115, 208, 230, 380, 460, 575 VAC electric actuating system. Brake release by energizing the coil. Excellent service and engineering support. Fail-Safe Internal surge protection Modular design/assembly for ease of servicing and maintenance. Oil Shear multiple-disc spring set braking. Proven long-life friction material for repeatable positioning. Pulse Width Modulation (PWM) Control of the brake coil to minimize heat build-up. Seal integrity for harsh and washdown environments. Smooth “cushioned” stops for reduced shock to the drive system. Spring-set Torque ratings from 6 to 1250 Ft.Lbs. Superior heat dissipation. The (3) smaller sizes uses a split-quill and hub clamp for quick & easy mounting to the motor face. The (4) larger sizes have a Quick mount Bore & key shaft connection to the motor and standard mounting to NEMA motor frames or low inertia IEC frames.

Note

Note

N/A Maximum Torque of 62 lb ft with 0.625” and 0.875” shaft.