AC Electromagnetic Brake – Construction, Working & Features
AC Electromagnetic Brake is suitable for single-phase AC supply up to 440V and is available for drum diameters of 100 mm to 375 mm and braking torques up to 69 kg-m.
Construction and Working of AC Electromagnetic Brake
The shoes and the base of brakes are of graded cast iron. Other components are fabricated steel. The lever is hinged on the main arm, which is connected to the sidearm through a tie rod and is stressed by a pre-loaded compression spring. The compression of the spring can be adjusted to set the braking torque to the desired value. The brake liner of selected quality material and are reverted to the shoes by aluminum rivets.
A.C. solenoid with laminated magnetic sheet steel houses a copper magnetizing coil which is impregnated with Class F material. This loads the spring and releases the brake shoes from the brake drum.
- The brake is Fail-to-safety. The brake is applied in the absence of A.C. current
- High-quality brake lining material ensures consistent braking torque and reliable operation.
- Clean environment working, less noise.
- Braking torque can be adjusted easily and quickly.
- Ease of maintenance.
- Brake type EMS 4 denotes A.C. single phase 4″ drum diameter (inch series)
- Brake type EMS 100 denotes A.C. single phase 100mm drum diameter (metric series)
- Brakes are made of an inch or metric drum
- Coils are rated for operation single phase, 400/440V, 50 cycles.
- Coils can be supplied with ‘class B’ Insulation.
- Coils for higher ambient temperature up to 60 c can be offered on request.
- Tolerance on indicated dimensions is + 2mm.
- High braking torque can be adjusted for reduced CDF duty.