
Double limit device
It can prevent the door from hitting the top. The compound transmissionstructure makes the accuracy up to 5 mm. lt is easy to adjust.
Sprocket drive
The transmission efficiency is high, the anti-breaking device haswon national patent certification, and when the chain is accidentallybroken, the device automatically locks to prevent the free fall of therolling door,making it economical and reliable.
Brakes
Reinforced fiber, high friction coefficient, stable brakingunderhigh-speed and high-load conditions, low noise,and low wear.
Control section
The AC contactor is adopted because it has the outstanding characteristics of being energy-saving, having no contact chatterhaving no magnetic flux leakage, having no temperature rise, making no noise, being maintenance-free, and being suitable forfrequent start-up and control.
Rated Voltage: 220V 50Hz | Rated output torque: 243N.m |
Current: 2.1A | Working time: 7min |
Phase: 1P | Work system: S2 |
Out-power: 180W | Ambient temperature: -20℃-50℃ |
Max lifting weight: 350kg | IP rating: IP20 |
Max lifting height: 7M | Insulation level: B |
Rated speed: 4.9r/min | Standards: JG/T 411 |
Keywords

JG-350A
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