Love to answer every day, sweepstakes Surprise ~ asker adopt a trapezoidal thread, in particular: _ Screw Machine Model Specifications (mm) SWL2.5_ Tr30x6 SWL5_ Tr40x6 SWL10_ Tr58x12 SWL15_ Tr65x12 SWL20_ Tr90x16 SWL25_ Tr110x18 SWL35_ Tr1110x20 SWL100_ Tr150x23 SWL120_ Tr180x25 above models and specifications are referring to a company Huai'an product (performance standards JB / T8809-1998) In my experience, in fact, different manufacturers, models corresponding screw specifications will be a little different, which I did not understand why, perhaps is the standard they perform are different. SJA ordinary screw lift square grooves unique case, increase the cooling capacity of the housing screw lift, extend the grease service life. Ductile iron shell material selection, a substantial increase in strength and performance of the housing, and is widely used in high temperature / low temperature. Square tail cover design, control the rotation of the screw is not. Advanced processing equipment and processing assembly process swl35 screw lift, high product quality assurance, advanced design concepts to create a strong shock resistance, high strength, low noise, long life, small size and high quality products. Modular combination enriched product portfolio changes, SJA screw jacks directly to the motor / reducer any combination of the motor / Special Features attachments, integrated design, providing customers with thousands of easy choices. Accordance with customer requirements non-standard design, such as stainless steel casing and Screw Jacks, long screw, high temperature, low temperature, and other products. Complete accessories: Dust swl2.5 screw lift, anti-backlash design, safety nut, ball screw lift jwm005, limit switches, overload clutch, potentiometers, encoders, brakes, hand crank, installation accessories and so on. swl35 screw lift | Runchi reducer (certified) | Xinyu screw lift provided by the Texas Runchi reducer Limited. Texas Runchi reducer Limited (www.sddzjsj.com) is a leader in Dezhou, reducer, gearbox, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Runchi reducer leadership with the staff warmly welcome all inquiries negotiations to create Runchi reducer a better future.