Our 2117B non sparking manual chain hoist helpsin many ways.

Material : Aluminum bronze or Beryllium bronze

 In a combustible or explosive atmosphere, the tool is either used to lift heavy

loads or assist in repair and installation of machine parts.

 Its explosion proof performance meets the GB/10686-89 standard.

Work Principle

Operators pull the chain on the side of chain hoist. 

This turns the small drive gear and makes it rotate. Subsequently, the large driven gear that meshes with the drive gear starts to turn. 

This gear mechanism enables an amplified torque output which creates the motion for lifting and lowering goods. 

The manual chain hoist is assembled, commissioned, and tested in strict accordance with the related State standards for lifting equipment.

On the inner side of the chain is fitted with pawls. The pawl and gear forms an assembly that resembles a ratcheting mechanism which allows the wheel to rotate in only one direction. 

Important

1.There should be no dislocated links on the lifting chain, as the chain would be used to lift or lower heavy goods in only the vertical direction. This ensures the hoist can start smoothly. Do not use the hoist to lift goods that exceed its rated capacity.

2. Operators should pull the chain in directions that are in the same plane as the chain wheel stays. Any pull in directions other than the above would potentially cause the chain link to be stuck between gear teeth.

3. Use even force to pull the chain, in order to avoid jumping chain or stuck chain. If any difficulty is founding in pulling the chain, please inspect the chain and identify the problem. 

4.Before operating the manual chain hoist, make sure all its parts and components including every chain link are in good condition. 

Apply lubricating grease to the shafts as well as gear teeth to reduce wear, thereby improving the use life of equipment.22