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PMB Series Spring-Set Brakes (Power-off)

PMB Series Spring-Set Brakes (Power-off)

The PMB Series is a power-off, DC spring set brake that provides a low-cost, multi-functional brake alternative for many applications. A simple, splined hub attaches to the shaft with a set screw and keyway and includes an anti-rattle feature for quiet operation. The series offers a superior torque to size ratio and heat dissipation.  An adjustment collar allows the torque to be varied to the application.  These brakes easily mount to the motor or the frame - mounting hardware included. Fully potted coils meet minimum requirements for class “F” insulation.

Overview

PMB Series Specifications:

Frame Size 30 40 50 60 65 75 85 100  120
Frame OD
mm (in)
84
(3.3)
102
(4)
127
(5)
147
(5.8)
162
(6.4)
188
(7.4)
215
(8.5)
254
(10)
302
(11.9)
Static Torque
Nm (lb-in)
5
(45)
8
(70)
16
(142)
32
(283)
60
(530)
80
(708)
170
(1505)
300
(2655)
480
(4250)
Coil Voltage
Vdc
24/90
190
24/90
190
24/90
190
24/90
190
24/90
190
24/90
190
 24/90
190
24/90
190
24/90
190
Resistance
ohms
30.4
405
1805
24.5
324
1444
19.8
270
1203
15.2
202.3
903
14.7
162
722
10.6
124.6
555
7.8
95.3
425
5.2
73.6
328
5.2
73.6
328
Max Power
watts
20 25 30 40 50 65 85 110 110
Armature
engage ms
15 20 20 20 20 190 300 350 500
Armature
disengage
ms
55 60 90 120 210 230 260 550 650
Weight
kg (lb)
 1.36
(3)
1.8
(4)
3.4
(7.5)
4.8
(11)
7.3
(16)
12
(27)
18
(40)
25
(55)
41
(90)

PMB Series Highlights

  • Static or dynamic engagement
  • English or Metric hub bores 
  • UL Class F insulation (155°C) 
  • UL Recognized component
  • Burnished only 
  • Optional manual release lever
  • Optional dust cover

PMB Series Applications

  • Factory automation
  • Semiconductor
  • Military/aerospace
  • Medical equipment
  • Elevators
  • Lift trucks
  • Pallet trucks
  • Electric vehicles
  • Electric hoists
  • Construction equipment
  • Winches & Cranes
  • Electric motor brakes
  • Conveyors
  • Robotics
  • Floor sweepers
  • Scissor lifts
  • Automated material handling equipment

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