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rab series

RAB Series Permanent Magnet Brakes (Power-Off)

The RAB is a permanent magnet power-off brake series that provides zero backlash stopping and/or holding of a load in the absence of power. While the field (electromagnet) is fixed and prevented from rotating, the output hub assembly is secured to the shaft. In the absence of power, the fixed and rotating components are engaged, thus stopping and/or holding the load. When the coil is energized, rotating components are disengaged, thus allowing the shaft to freely rotate. The RAB Series is RoHS, REACH and UL Class F compliant.

Overview

Frame Size 11 13 15 20 25 32 40 50  60
Frame OD:
mm (in)
28
(1.10)
32
(1.26)
40
(1.57)
50
(1.97)
63
(2.48)
80
(3.15)
100
(3.94)
125
(4.92)
160
(6.30)
Static Torque:
Nm (lb-in)
0.4
(0.04)
1.0
(8.85)
2.0
(17.7)
4.5
(39.8)
9.0
(79.6)
18.0
(159.3)
36.0
(318.6)
72.0
(637.2)
140.0
(1239)
Coil Voltage:
Vdc
24 24 24 24 24 24 24 24 24
Max Power:
watts
8.0 10.0 11.0 12.0 18.0 24.0 26.0 40.0 50.0
Weight:
kg (lb)
0.12
(0.26)
0.15
(0.33)
0.22
(0.49)
0.38
(0.84)
0.56
(1.23)
1.0
(2.20)
1.86
(4.10)
3.23
(7.12)
5.93
(13.07)

RAB Series Applications

  • Robotics
  • Medical equipment
  • Actuators
  • Motor brakes
  • Material handling equipment
  • Packaging

VIDEO: Clutches, Brakes, and Gearheads

John Pieri, Thomson Brake/Clutch Product Line Manager, describes friction and wrap spring clutches and their various applications as industry solutions. He covers how and when to apply friction clutches in certain situations while wrap spring clutches in others. Also included in the discussion is a description of gearheads and their functionality in application design.

A - Thomson_Clutches_Brakes_Gearhead_Technology_vden.mp4

Find a Product

Not finding the product you need? Contact us for replacement parts and custom clutches and brakes!

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Function

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CAD Models

  • Configurable 2D/3D Partstream Models
  • Configurable 2D/3D Solidcomponents Models
  • Configurable 2D/3D PartServer Models
  • Static 2D/3D Model file downloads

NOTE: Please use Internet Explorer 11, Edge, Firefox, or Google Chrome with Edrawings Viewer

Partstream Interactive Viewer Instructions:
1) Select a product from the table below and Configure your model to the right of the viewer that appears.
2) Click the Create button at the bottom of the configurator and wait for model to load (may take a few minutes).
3) Click the Download tab and login to your account if requested (or register as a first-time user).
4) Select a format, wait for the file to be created (may take a few minutes), and click the Download button.

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