Magnetic Particle Brakes
Placid magnetic particle brakes, also called powder brakes and mag particle brakes, provide smooth and repeatable torque control. Torque is proportional to input current, and independent of shaft speed, thereby allowing for precise control. These self-contained magnetic particle brakes are ideal for tension control, load simulation, and soft stops. Some large units are available with fan or pneumatic cooling. Torque rating from 1 oz.-in to 300 lb.-ft.
- Adjustable tension – for unwinding (payout) webs.
- Load simulation – for testing stepper motors, gear motors and mechanisms.
- Torque limiting.
- Soft stops.
- Is proportional to input current.
- Is independent of RPM.
Metric Units – Large Magnetic Brake Torque Range = 0.3-20 to 400 Nm.
Metric Units – Small Magnetic Brake Torque Range = 0-0.7 to 25 Nm.
- With no electrical excitation, the shaft freely rotates.
- With electrical excitation, the shaft becomes coupled to the case.
- While the load torque is less than the output torque, the shaft won’t rotate.
- When the load torque is increased, the brake will slip smoothly at the torque level set by the coil input current.
Small Magnetic Particle Brakes
View in metric
Small Magnetic Particle Brakes - up to 220 lb.-in. (25 Nm)
| Model | Torque Range | Max RPM | Slip Heat Dissipation (watts) | Max Overhung Load (lbs) | Weight (lbs) | |
|---|---|---|---|---|---|---|
| B5ZD | 0.05 to 1 oz.-in. | 4000 | 1.5 | 0.7 | 0.2 | Details |
| B5Z | 0.1 to 5 oz.-in. | 3500 | 2 | 0.7 | 0.2 | Details |
| B1 | 0.6 to 16 oz.-in. | 3000 | 3.5 | 4 | 0.6 | Details |
| B2 | 1.2 to 40 oz.-in. | 2500 | 8 | 5 | 1 | Details |
| B6 | 0.2 - 6 lb.-in. | 2000 | 15 | 25 | 2 | Details |
| B15 | 0.3 - 15 lb.-in. | 2000 | 20 | 25 | 2.5 | Details |
| B35 | 0.6 - 35 lb.-in. | 1800 | 30 | 50 | 4 | Details |
| B60 | 1 - 60 lb.-in. | 1800 | 50 | 100 | 7 | Details |
| B115 | 2.5 - 115 lb.-in. | 1800 | 55 | 120 | 8 | Details |
| B150 | 3 - 150 lb.-in. | 1300 | 80 | 120 | 12 | Details |
| B220 | 4 - 220 lb.-in. | 1000 | 110 | 120 | 21 | Details |
See data sheet for heat dissipation info.
Mounting holes - Standard: Imperial (inch), Optional: Metric
Large Magnetic Particle Brakes
View in metric
Large Magnetic Particle Brakes - up to 3600 lb.-in. (400 Nm)
| Model | Torque Range | Max RPM | Slip Heat Dissipation (watts) | Max Overhung Load (lbs) | Weight (lbs) | |
|---|---|---|---|---|---|---|
| KB-2.5 | 0.2 - 15 lb.-ft. | 1800 | 130 - 260 | 90 | 19 | Details |
| KB-5 | 0.5 - 38 lb.-ft. | 1800 | 190 - 425 | 125 | 31 | Details |
| PLB-50 | 1.4 - 30 lb.-ft. | 500 | 160 - 240 | 125 | 17 | Details |
| PLB-100 | 1.5 - 70 lb.-ft. | 500 | 200 - 300 | 175 | 31 | Details |
| PLB-200 | 4 - 140 lb.-ft. | 500 | 350 - 500 | 200 | 62 | Details |
| POB-100F | 0.5 - 70 lb.-ft. | 1800 | 300 - 800 | 175 | 79 | Details |
| POB-200F | 2 - 130 lb.-ft. | 1800 | 425 - 1200 | 200 | 128 | Details |
| POB-400F | 4 - 300 lb.-ft. | 1800 | 550 - 1900 | 325 | 225 | Details |
See data sheet for heat dissipation info.