SJ series trapezoid spiral screw jacks

SJ series trapezoid spiral screw jacks

SJ series trapezoid spiral screw jacks
It adopts advanced square-type structure, has compact gearbox casing and comprehensive installation requirements
Rated load: 0.5 tons - 250 tons
The lifting speed for pushrod can reach to 30mm/s, the max input speed is 3000 RPM (rated 1500 RPM)
Duty: 20% (run 2 minutes in 10 minutes)
The double-nipple and triple-nipple screws are chosen to match, and also can select stainless steel screw.
Accessories include tooth-depth device, anti-rotation device, safety nut, dust shield, and magnetic induction limit switch.

010 87973866
  • Parameter table
  • Choosing the right spiral screw jacks
  • Non-standard requirements
  • combination system
  • Sample
  • Three- dimensional diagram

  • Considering the condition of application, and then choose suitable products.
    If you need us to choose more suitable product for you, please provide us the parameter as follows:
    1.Weight of Jacks: how much Kg?
    2.Speed of Jacks: the moving length of the screw or screw nut per minute or per second.
    3.Screw movement form: screw move or screw nut move.
    4.One or several device for jacks.
    5.Whether directly connect with drive motor?
    Important calculation: calculation for the root diameter of screw.


  • Modify the standard spiral screw jack
           Suitable modify parts including non-standard coating(passivation treatment: galvanize, chroming, equip with 2-nipple or 3-nipple thread screw and stainless steel screw or worm shaft , improve the length of screw shaft and worm shaft, and furnish with reverse thread screw and so on 
    Adding and changing accessories for standard spiral screw jacks.
           It can add accessories, such as: safety lock nut, anti-reverse device, special screw nut, coding adapter flange, non-standard motor flange and so on.
    Completely special screw jacks
           We can’t change the existing screw jacks, but we can design and manufacture according to your special need.

  • 1.Several spiral screw jacks can be linked to be a lifting system. It can start with several screw jacks in the same time. There are some patterns for this kind of lifting system, they are need to be equipped with bevel gearbox, motor, reducer, drive shaft, coupling and movement control device. All accessories can refer to the system parts.
    2.H type and U type lifting structure is two commonly used system structures. Please note, several screw jacks can be mechanical linked and electric linked.
    Electric linked is used for the condition with no spare space to connect drive shaft, if connect several screw jacks to be a lifting system, you need to consider the self-locking of the whole system.
           Relative questions can consult Beijing Saili Transmission Co., Ltd, or add a brake device for the system, this device is independent and also can be a brake motor.

  • Uploading.....
Spiral screw jacks
SJ series trapezoid spiral screw jacks
SJB series ball screw jacks
JWM series trapezoid spiral screw jacks
JWB series ball screw jacks
MA series trapezoid spiral screw jacks
Drive motor
Y2 series three-phase asynchronous motor
Y2EJ series electromagnetic brake three-phase asynchronous motor
Y2B series explosion-proof three-phase asynchronous motor
Stepper motor
Actuating motor
DC motor
Worm gearmotor RV series
Helical- bevel gearmotor K series
Single stage gearemotor RX series
Helical gearmotor R series
Helical-worm gearmotor S series
Parallel shaft helical gearmotor F series
Small gearmotor TC series
Speed control parts
Variable-frequency Drive
6-400W economical speed regulation
JWB series stepless speed variator
Limit control
FCG roller plunger limit switch
FCP approach limit switch
Gear units
HD series spiral bevel gear units
ARA series small spiral bevel gear units