PMB Series Power-off Spring-Set Brakes
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.
| 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
