The 307B non sparking trolley is a wheeled carriage that runs on an overhead rail. Beneath the trolley usually hangs a chain block to form a complete chain hoist.
Our non sparking trolley is designed for safe operation and easy maintenance. The flange-to-flange width of its rim or wheel is adjustable to the flange width of the I-beam track. On the wheel shaft is installed a rolling bearing to improve its wheel efficiency and saving labor. The trolley wheel comes with a unique tread design that enables a stable running, even on a slope with a ratio of equal to or less than 1:6. Equipped with flanges, the wheel also can ride on a slightly curved track. This non-sparking transportation tool is applicable for various lifting jobs where spark is a fire or explosion hazard.

Our 308 non sparking manual chain hoist helps in many ways. In a combustible or explosive atmosphere, the tool is either used to lift heavy loads or assist in repair and installation of machine parts.
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. 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.

The 308A non sparking manual chain hoist basically works the same way as the 308 version. However, this upgraded tool adopts a special design that can better cope with heavyweight loads while saving more labor. Due to its non sparking feature, the hoist is commonly used in areas where combustible or explosive hazard might be experienced, with unique functions to lift or lower goods as well as assist in parts repair and installation. Drop forged construction gives the hoist high strength, stable mechanical performance, and long service life.

The 308B non sparking ratchet lever hoist works the same way as pull-type chain hoist in terms of saving effort. Both types rely on a differential pulley to amply force that will be applied to the objects. What distinguishes our ratchet lever hoist from the manual pull type is that the former enables the load to be lifted by cranking the handle, instead of pulling the chain, as with the latter. A ratchet type hoist is most often used to move heavy loads horizontally rather than in vertical directions.