The unpowered unwind stand uses a hysteresis-type magnetic brake to control web tension. Torque control is accomplished by turning the large knurled adjustment ring. Repeatability and accuracy are excellent.
Benefits of this model:
- Adjustable tension
- Soft starts with zero slip
- Constant torque
- Long life
- Excellent overload protection
- No external power required
- No maintenance: magnetic fields
- Permanently sealed and lubricated ball bearings (not friction pads) create web tension