ble , while reducing the size of the crane height decreases wheel pressure abroad has been widely adopted as an electric hoist lifting mechanism . To reduce weight , improve the bearing capacity, improve manufacturing conditions , increase product yield, as far as possible to weld parts on behalf of the cast , such as reducer shell, roll Jane, pulleys and so welded structures. Hardened reducer gears are used to reduce weight , reduce the volume and improve the bearing capacity and increase service life. Hydraulic disc brakes putter range of applications is also growing . In addition, the agencies are used to high- speed development of the electric motor , thereby reducing the number of motor base , reduce weight and reduced dimensions, and can be equipped with a braking torque small brake.
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