Worm Screw Jack Lift Gearbox Worm Gear Screw Jack Lifter Mechanical Jack

1.Convenient to adjust2.Wide range of ratio3.Easy to install4.high torqueApplication Industries:Our SWL series screw jacks are widely used in the industries such as metallurgy,mining,hoisting and transportation, electricalpower,energy source,constrction and building material,light industry and traffice industryScrew Jacks in constructionOften 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.Product ParametersMODEL   SWL2.5SWL5SWL10SWL15SWL20SWL25SWL35Maximum 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 Detailed Photos       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 installation3.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 Product Description  Related Products Packaging & Shipping Company Profile /* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1