Product Overview: disc brakes widely used in large and medium-sized cranes, port handling machinery, lifting, tilting mechanism low speed shaft emergency safety brake. A hoist, mine hoist brake indispensable safety device. Product Features: designed by NC, is de-energized - Safe brake design is reasonable, the dish spring force, smooth and reliable hydraulic loose valve, hydraulic braking torque with a manual override device large, responsive friction material international brand names and seals are more than 0.45 coefficient of friction braking force large and stable, long life factory with limit switch interlock and wear tips.