The working principle of a stainless steel hand-operated hoist (also known as a manual chain hoist) relies on mechanical leverage and a ratchet-and-pawl system to lift or lower loads using manual force. Here's a step-by-step breakdown:

1. Core Components

Load Chain: Wraps around the sprocket to lift/lower the load.

Hand Chain: Pulled manually to drive the mechanism.

Gears: Reduce effort by amplifying force (trade-off: speed).

Ratchet & Pawl: Locks the load in place to prevent backsliding.

Stainless Steel Construction: Resists corrosion in wet/chemical environments.

2. How It Works

Pulling the Hand Chain:

Manual force pulls the hand chain, rotating a sprocket (gear).

The sprocket engages the load chain, which is attached to the load hook.

Gear Reduction:

A series of bevel gears inside the hoist reduces the speed of the load chain while increasing the force applied. This mechanical advantage allows lifting heavy loads with moderate effort.

Ratchet Mechanism:

A pawl (spring-loaded tooth) engages teeth on the sprocket, preventing the load chain from moving backward when the hand chain is released.

To lower the load, a release lever disengages the pawl, allowing controlled descent.

Braking System:

Some designs include a load brake that automatically engages if the hand chain is released suddenly, providing secondary safety.

3. Stainless Steel Advantages

Corrosion Resistance: Ideal for marine, food processing, or chemical environments.

Hygienic: Easy to clean (no rust), suitable for sterile applications.

Durability: Withstands harsh conditions better than standard steel.

4. Limitations

Weight: Stainless steel is heavier than carbon steel, making the hoist bulkier.

Cost: More expensive due to material and machining complexity.

Friction: Stainless steel-on-steel contact may require lubrication in high-cycle applications.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment