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Industrial Clutch LKB Brakes for Mine Spreader
An open pit coal mine operator in the western US needed to replace some of the
brakes on its overburden spreader. The massive machine features two large intake
and discharge conveyor booms along with a heavy counterweight boom. Overburden
is transported from the mine site via an overland conveyor, and then transferred to the
spreader’s intake conveyor. The tracked spreader moves along the side of the
dumping area as it distributes the material uniformly from its discharge conveyor.
The spreader utilizes electric motors with brakes to drive the hoist rope winch reels
on each of the booms. Industrial Clutch LKB 325 spring-set, pneumatically released
brakes with 300,000 in.lb. torque capacity were an ideal solution for the brake
replacements. The brakes, positioned on the drive end, opposite of the motor, provide
high-energy emergency stopping and static holding functionality.
LKB brakes feature high-energy metallic linings with large swept areas, ensuring
excellent heat dissipation, uniform stopping distances and long lining life. Units also
feature wear sensors, high-strength alloy steel drive studs, actuation springs sized for
maximum life, and long-life piston seals.
Highlights
- Spring-set, pneumatically
released brakes
- Non-asbestos lining
materials with large pad
areas for maximum heat
dissipation
- Actuation springs sized
for maximum life
- Induction-hardened
hub splines
- High-strength alloy steel
drive studs