Hand chain driven manual bridges are operated by pulling a chain that is looped over a chain wheel to turn the drive shaft and the drive gears on the bridges wheels. Due to the relatively slow nature of a manual chain hoist, they are recommended for use in applications that require precision spotting.
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As the loads increase in size and weight, hand chain bridge cranes are preferred over manual push/pull cranes. The heavier the load, the more force it takes to move it. Another advantage of the hand geared overhead traveling crane is that it can be operated at a safe distance from the load.
Manual bridges work well with chain fall hoists, electric hoists, air hoists and air balancers. Each crane can be equipped with an electrical festoon wire or an air hose to provide power to your desired lifting apparatus.