The first brand Rolling Ring Drive in China, create the best value for customers.


   OKA Rolling Ring Drive

   OKB Rolling Ring Drive

   OKC Rolling Ring Drive


   Dimension and Details
   How to choose the types



OKA Series Rolling Ring Drive

(Traverse Units Linear drives Linear Motion Assemblies)

linear motion

 Name: General Rolling Ring Drive

 Item No.: OKA
 Description: OKA series rolling ring drives  have three rolling rings inside their cases, which are divided into eight types according to the diameter of the shafts.
1) OKA15 (Shaft Ø15mm)
2) OKA20 (Shaft Ø 20mm)
3) OKA22 (Shaft Ø 22mm)
4) OKA25 (Shaft Ø 25mm)
5) OKA30 (Shaft Ø 30mm)
6) OKA40 (Shaft Ø 40mm)
7) OKA50 (Shaft Ø 50mm)
8) OKA60 (Shaft Ø 60mm)

linear actuator

Rolling Ring Drive with Four rolling rings

 Item No.: 4R-OKA
 Description: 4R-OKA series rolling ring drives  have four rolling rings inside their case, which can supply double thrust force. Five types are available.
1) 4R-OKA15 (Shaft Ø15mm)
2) 4R-OKA20 (Shaft Ø 20mm)
3) 4R-OKA22 (Shaft Ø 22mm)
4) 4R-OKA30 (Shaft Ø 30mm)
5) 4R-OKA40 (Shaft Ø 40mm)

Technical Details for OKA series rolling ring drive
Type Dimension (mm) Remotion Pitch (mm) Thrust (N) Wt (kg)
OKA15 92x56x70 0.01-11 100 1.1
OKA20 111x68x85 0.01-16 160 1.7
4R-OKA20 132x68x85 0.01-16 320 2.0
OKA30 130x85x105 0.1-25 260 2.8
4R-OKA30 162x85x105 0.1-25 520 4.0
OKA40 160x101x129 0.5-32 420 4.8
OKA50 184x119x149 1-40 700 6.7
OKA60 220x132x160 1.5-48 1000 14.0

OrientKnight (OK) rolling ring drives 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.

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