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รอก (Hoist)

A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium.

    1. Chain Block is a hand hoist without electronic parts. The installation of the chain hoist is easier than installing other types of hoists. Therefore, it is suitable for occasional lifting tasks or in jobs where there is noelectricityavailable.
    2. Level Block or Level Hoist looks like a chain block, but is different in that instead of manually operated, it is equipped with a handle.
    3. Electric hoists can be divided into 2 types: electric chain hoist and electric wire rope hoist.