If you looking for one of the best sj-20t worm screw jack manufacturers or a such supplier in China,Website:://.screwjacksj.com, equipped with one professional factory, Sijie Industrial Co.,Ltd is always at your service, we are able to offer you customized sj-20t worm screw jack products.SJ-20T Worm Screw Jack Detailed Information:1: Jack Model: SJ-20T2: Static Load Capacity: Max 20 tons3: Dynamic load Capacity: Max 8.4 tons4: Lifting Screw Diam: 64 mm5: Lifting Screw Pitch: 10 mm6: Gear Ratio: 1/8, 1/16, 1/327: Lifting Speed: 1.55mm/s-31.25mm/sSJ-20T Worm Screw Jack Specification:ModelLiftingScrew(mm)WormGearRatioTravel perFull turn ofworm (mm)1800RPM1500RPM1200RPMPower(HP)Load(kg)Speed(mm/s)Power(HP)Load(kg)Speed(mm/s)Power(HP)Load(kg)Speed(mm/s)SJ-20TTr64*101/81.25mm3.57140037.53.24185031.253.011950251/160.625mm1.9160018.751.97185015.61.84225012.51/320.3125mm1.5324009.371.5728007.81.4633506.25WormGearRatioTravel perFull turn ofworm (mm900RPM600RPM300RPMPower(HP)Load(kg)Speed(mm/s)Power(HP)Load(kg)Speed(mm/s)Power(HP)Load(kg)Speed(mm/s)1/81.25mm2.84245018.752.59335012.51.8949006.251/160.625mm1.7228009.371.5838506.251.1556003.121/320.3125mm1.4444004.681.2557503.1250.9284001.56