COMPANY HEADER
Request Information
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

Pilot Diameter FAK

 N/A 10.50 in12.50 in

Bore Diameter FU

 N/A 1.625 in1.875 in2.000 in2.125 in2.250 in2.375 in

Minimum Bore Depth FAH

 N/A 2.75 in

Maximum Bore Depth FAH

 N/A 4.62 in

Static Brake Torque

 N/A 600 lb·ft650 lb·ft750 lb·ft900 lb·ft

Dynamic Torque

 N/A 516 lb·ft559 lb·ft645 lb·ft774 lb·ft

Maximum Kinatic Energy (KE) per Engagement

 N/A 69,000 ft·lb

Cyclic Inertia

 N/A 1.244 lb·ft²

Oil Capacity

 N/A 192 fl oz

Input Voltage

 N/A 115 VAC

Inrush Current

 N/A 6 A

Inrush Time

 N/A 1.4 s

Holding Current

 N/A 1.8 A

Mounting Position

 N/A D - Vertical, Brake Down H - Horizontal, Standard J - Horizontal, High Oil Level U - Vertical, Brake Up Z - Horizontal, Marine Duty

Manual Release

 N/A B - Manual Release with Stub Shaft for Encoder R - Manual Release

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 350 lb ft with 1.625” shaft.; Maximum Torque of 750 lb ft with 1.875” shaft. Other requires Step Down Transformer - See Section 5.4