Professional usage of screw jack
Screw jack, an industrial essentials, is a common lifting equipment. Due to the independent characteristics of screw jack, such machine has its unique use requirements which can not be used beyond the scope, otherwise it is prone to failure.
The maximum speed should be below 1500 rpm as the worm gear structure adopted for the screw jack,when the stroke longer than 300 mm, please refers to the datasheet for its stability.
There is a max input power for each model of screw jack, which means the input speed should not be exceed the peak.
The torque should be calculated if the bearing reaches 25% to 100% of the full, which can be drawn by the loadi-ng percentage multiply by the full torque. The max input power is related to working temparature.
All NOSEN screw jacks equip with the function of self-locking.
D5 Leteral force
The screw can not bear the lateral force. If there is, a guide rail must be supported that.
Screw jack RN1T
Diameter of screw 24 mm, pitch 5 mm
Maximum static loading 1 tons
Maximum dynamic loading 0.6 tons
Speed ratio 1/5,1/10,1/20
Lifting capacity 75 to 1500 mm/min
Input hp 0.05 to 0.5 hp
Maximum input speed 1500 rpm
Screw with trapezoidal thread
Stroke maximum to 750 mm
Screw top end: T type (load pad), R type (plain end), S type (threaded end), U type (forked end), E/F travel nut
Power source: motor and handwheel.
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