Electro-Magnetic Thruster Operated Drum Brakes

K-EMDB


Cranes
Conveyors
Material Handling Equipment.

The brake assembly contains of a brake arm, brake shoe, base frame, actuating lever, brake spring, and an electromagnetic thruster. The brake shoe is mounted on the brake arm and the gap between the brake drum and brake pad is adjusted by spring mechanism. A spring, suitable to give the required braking force, is mounted inside the thruster. All the components are mounted on to the base frame

The brake is a failsafe type. Normally the brake will be in applied condition, due to the spring force on the brake arms. When the power supply is on, an electromagnetic force is developed in the coil, which pulls the plunger against the spring force. When the plunger is pulled, the spring is compressed and the brake arms move away from the drum thus releasing the brake. When the power is switched off the electromagnetic force become nil and the brake is applied by spring force

 

TORQUE RATING FOR SHUNT BRAKES
Brake Size Torque Rating
AISE Metric DC Operation AC Operation
    Cont. Duty Int. Duty Cont. Duty
Inch. mm Lbf.ft Nm Lbf.ft Nm Lbf.ft Nm
4 100 22 30 29 40 29 40
6 150 53 72 71 96 71 96
8 200 75 102 100 136 100 136
10 250 150 203 200 271 200 271
13 300 400 542 550 746 550 746
16 400 750 1017 1000 1356 1000 1356
19 500 1500 2034 2000 2712 2000 2712
23 600 3000 4067 4000 5423 4000 5423