Basic Models:R17, R27, R37, R47, R57, R67, R77, R87, R97, R107, R137, R147, R167 RF17, RF...
The SJA worm gear screw jack is widely used in industries such as machinery, construction, hydraulics, and metallurgy, offering various functions including lifting, lowering, pushing, tilting, and height adjustment with the help of auxiliary components.
The SJA worm gear screw jack is a fundamental lifting component characterized by a compact structure, small size, lightweight, wide range of power sources, easy installation, noiseless operation, multifunctionality, diverse configurations, flexible use, high reliability, and long service life.
Features of the SJA Worm Gear Screw Jack
Thrust Range: 0.5-30 tons
Stroke: Up to 8 meters (considering screw stability and guidance systems)
Duty Cycle: 30% (can be increased if the load rate is low)
Lifting Speed: Less than 1500 mm/min (23 mm/s)
Efficiency: Less than 33%, with self-locking function; large reduction ratio L1 ensures self-locking
Precision Positioning: With an anti-backlash device, precision can reach 0.05 mm
High Synchronization: Multiple screw jacks can be driven by the same motor for mechanical synchronization
Optional Accessories: Encoder, limit switch, dust cover, safety nut, reducer, standard motor, servo motor, stainless steel materials, etc.
Easy Operation and Maintenance: Low noise.
The square grooved housing of the jack enhances heat dissipation, extending the service life of lubricating grease. The ductile iron housing significantly improves strength and performance, allowing broad applications in high and low-temperature environments. The square tail cap design prevents the screw from rotating. High-quality machining and assembly processes ensure high impact resistance, strength, low noise, long life, and compact size.
The modular design enriches product combinations, allowing seamless integration with motors, geared motors, and non-standard accessories, providing thousands of easy configuration options for customers.
Custom designs are available upon request, including stainless steel housings and screws, multi-thread screws, and models resistant to low or high temperatures.



Liangqiu Machinery Co., Ltd. is a company that researches, develops, manufactures, and sells transmission machinery.
The company has a quality assurance system, complete testing facilities, computer-aided design and computer-aided manufacturing, a horizontal machining center, a CNC cone grinding wheel grinding machine, a three-dimensional coordinate meter and gear detector, and other equipment. It can design and process products for customers and develop and manufacture new products.
The company mainly produces the T series spiral bevel gear commutator, HD spiral conical gear commutator, ARA series spiral bevel gear steering box, SWL worm gear screw lift, JWM spiral lift, P planetary gear reducer, precision planetary gear reducer, WP cast iron worm gear reducer, RV worm gear reducer, R series helical gear hard gear surface reducer S series helical gear worm gear reducer, K series helical bevel gear reducer, F series parallel axis helical gear reducer, MB step-less transmission machine, WB micro cycloid reducer, X/B series cycloid pin gear reducer, HB standard industrial gearbox, M large gear reducer, Mc hard tooth surface reducer, G fully enclosed gear motor, ZDY hard face cylindrical gear reducer and other nearly 20,000 kinds of speed ratios of various types of reducer, can be matched with ordinary Y(Y2) motor, explosion-proof B(YB) motor, DC Z motor, brake E(YEJ) motor, variable frequency V(YVP) motor, variable frequency brake VE(YVEJ) motor, track G motor and all kinds of servo motor non-standard connection.
A few days ago, we learned from the National Natural Science Foundation of my co...
View MoreA few days ago, we learned from the National Natural Science Foundation of my co...
View MoreA few days ago, we learned from the National Natural Science Foundation of my co...
View MoreA few days ago, we learned from the National Natural Science Foundation of my co...
View MoreAfter a hundred years of development, the hydraulic industry has spiraled upward...
View MoreAfter a hundred years of development, the hydraulic industry has spiraled upward...
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