SOHO Machinery Factory is a professional manufacturer which specializes in making rolling ring linear drives (rolling ring drive, traverse unit, linear actuators, linear motion assemblies) in China. Our products are used in linear motion control applications for a variety of reciprocating, positioning and indexing linear motion operations, for example they can be used in manufacturing equipment requiring a linear motion component such as winding (cable, wire & fiberoptic), slicing, spooling, positioning, indexing, slitting, spraying, loading, scanning, transferring, measuring, converting, packaging, material handling and a variety of other machines. OrientKnight (OK) has been the first brand and the first choice for thousands of Chinese machinery factories requiring rolling ring linear drives since SOHO Machinery Factory made the first one in 1985. OK rolling ring traverse units do not require programming or complex controls in order to reverse travel direction. The linear speed of the traverse is adjustable without changing gears. Special enhancements to improve accuracy and efficiency in linear motion are available. OK rolling ring drives are unmatched at lowering production and maintenance costs while boosting productivity. In broader linear motion markets, such as the OEM design engineering market, SOHO provides expert rolling ring linear motion guidance to explain when and how to use OK rolling ring technology to improve productivity and efficiency. Now our products have been sold all over the world. Continuously renewed and updated, the third generation products of aluminium alloy with the craftsmanship and technology introduced from Germany deliver superior performances.