Audited Supplier
screw jack
Nonstandard
Textile Machinery, Garment Machinery, Conveyer Equipment, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car, Power Transmission
OEM, ODM, Obm
Beiji or Customized
ISO9001:2008
Worm Gear and Worm
Worm Screw Jack
Green or Blue or Customized
6-36
Swl Series Worm Gear Lift
0-1440rpm
up to 500nm
Hotels, Manufacturing Plant, Food & Beverage Facto
0.25-17.5kw
HUAKE
Carton
China
8501320000
Product Description
1.Convenient to adjust
2.Wide range of ratio
3.Easy to install
4.high torque
Application Industries:
Our SWL series screw jacks are widely used in the industries such as metallurgy,mining,hoisting and transportation, electrical
power,energy source,constrction and building material,light industry and traffice industry
Screw Jacks in construction
Often found in climbing mechanism of construction,the screw jacks use physical means to raise and lower loads, which typically range from 5 tons to 30 tons. A screw jack is a common type of mechanical jack, which works via a motor and gearbox by an operator. A screw uses the shape of its threads to raise or lower the load, or a traveling nut does the lifting while the screw turns in place. Mechanical jacks are self-locking(not for ball screw), which means that when power is removed from the jack, the screw stays in place until power resumes. This setup makes mechanical jacks safer than their hydraulic counterparts, because users don't have to fear a loss of power. The main components of screw jacks are; trapezoidal lifting screw also known as lead screw, worm screw, worm gear and gear housing. A worm screw is rotated manually or by a motor. With the rotation of the worm gear, the lead screw in it moves upwards or downwards linearly. The feed rate of the screw depends on the turning speed, the number of teeth of the gears and the size of the screw pitch. In some models of jackscrews, The lifting screw does not move up and down. It only rotates around its axis. A lifting nut (also known as a travelling nut) moves along the lead screw. The lifting nut of the screw jack is made of bronze to decrease friction.MODEL | SWL2.5 | SWL5 | SWL10 | SWL15 | SWL20 | SWL25 | SWL35 | |
Maximum lifting force (kN) | 25 | 50 | 100 | 150 | 200 | 250 | 350 | |
Screw thread size | Tr30*6 | Tr40*7 | Tr58*12 | Tr58*12 | Tr65*12 | Tr90*16 | Tr100*20 | |
Maximum tension (kN) | 25 | 50 | 99 | 166 | 250 | 350 | ||
Worm gear ratio (mm) | P | 1/6 | 1/8 | 3/23 | 1/8 | 3/32 | 3/32 | |
M | 1/24 | 1/24 | 1/24 | 1/24 | 1/32 | 1/32 | ||
Worm non rotating stroke (mm) | P | 1.0 | 0.875 | 1.565 | 1.56 | 1.5 | 1.875 | |
M | 0.250 | 0.292 | 0.5 | 0.5 | 0.5 | 0.625 | ||
Maximum elongation of screw rod under tensile load (mm) | 1500 | 2000 | 2500 | 3000 | 3500 | 4000 | ||
Maximum lifting height at maximum pressure load (mm) | The head of the screw rod is not guided | 250 | 385 | 500 | 400 | 490 | 850 | 820 |
Lead screw head guide | 400 | 770 | 1000 | 800 | 980 | 1700 | 1640 | |
Worm torque at full load(N.m) | P | 18 | 39.5 | 119 | 179 | 240 | 366 | 464 |
M | 8.86 | 19.8 | 60 | 90 | 122 | 217 | 253 | |
efficiency(%) | P | 22 | 23 | 20.5 | 19.5 | 16 | 18 | |
M | 11 | 11.5 | 13 | 12.8 | 9 | 11 | ||
Weight without stroke(kg) | 7.3 | 16.2 | 25 | 36 | 70.5 | 87 | ||
Weight of screw rod per 100mm(kg) | 0.45 | 0.82 | 1.67 | 2.15 | 4.15 | 5.20 | ||
SWL Series worm screw Jack:
1.The elevator is a combination of turbine pair and trapezoid screw rod to complete the lifting and lowering of objects. 2.Compact structure, light weight, safety and reliability, long service life, convenient installation
3.Self-locking function in the static state.
1. screw rod | 2. nut bolt | 3. cover | 4.Skeleton oil seal | 5.Bearing |
6.Worm gear | 7.Oil filling hole | 8.Case | 9.Skeleton oil seal | 10.Cover |
11. nut bolt | 12.Bearing | 13.Skeleton oil seal | 14.Bearing | 15.worm |
16.Flat key | 17.Bearing | 18.Skeleton oil seal | 19.Cover | 20.Nut bolt |
