Shell:
Light aluminum alloy shell shall be adopted,which is light but hard and fit for the use in the terrible work environment with a high heat dissipation rate and all tightness design.
Inverse phase sequence protecting device:
It is the special electrical installation which controls the circuit not to  work in case of wiring error in the power supply.
Limit switch:
The limit switch device is installed  where the weight is lifted on and off to make the motor to stop automatically so as to prohibit the chains from exceeding for safety.
24V/36V device:
It is used to prohibit the emergencies from occuring in case of the leakage in the switch.
Side magnetic braking device:
This device shall realize the instant brake in case of the power dump.
Chain bag:
It shall be light ,handsome and durable.
Chain:
The chain shall adopt the imported FEC80 ultra heat-treatable aluminum alloy chain.

Type WBH-00501S
Capacity(t) 0.5
Standard Lifting Height(m) 3
Lifting Speed(m) 6.8
Lifting Motor Power(kw) 0.75 
Rotation Speed(r/min) 1440
Phases 3
Voltage(v) 200-440
Frequency(Hz) 50
Operating Motor Power(kw) 0.4
Rotation Speed(r/min) 1440
Operating Speed(m/min) 11/21
Phases 3
Voltage(V) 200-440
Frequency(Hz) 50
Chain Turns 1
Chain Specification  O6.3
Test Load(t) 0.625
Weight(kg) 47
I-Beam(mm) 58-153
Weight Added with 1m Higher(kg) 0.81