Electric hoists distinguish between single-speed and double-speed wire rope electric hoists. The single-speed electric hoist is represented by CD, and the double-speed is represented by MD. It is a classic hoist for single-beam cranes, monorails, I-beam structures, etc., and is a small lifting equipment. . Installed on various cranes or used as winches. It is widely used in factories, warehouses, mines, ports, cargo storage areas and shops to improve work efficiency and conditions. CD and MD electric hoists are jointly developed and finalized by 7 large-scale crane manufacturers and research institutes in China.

The main features of CD MD electric hoist are:

Reducer: high-strength hard tooth surface, helical gear transmission, low noise.
Motor: squirrel cage motor, built-in plane brake, double-winding pole-changing control motor, equipped with reducer, suitable for higher levels.
Steel wire rope: tensile strength is 1760N/mm2.
Limit switch: lifting limit switch, gravity switch.
Working hours: A3/A4
Speed: first or second speed
Main electrical components: Schneider
Motor brand: Chinese or internationally renowned brand.
The main difference between the CD type electric hoist and the MD type electric hoist is that the CD type has only one speed, which can meet normal use, while the MD type has two speeds: normal speed and low speed, which can carry out precise loading and unloading, sandbox stacking, machine Maintenance, etc., so MD electric hoist is more widely used than CD electric hoist.