Okcoil 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. Okcoil 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, Okcoil provides expert rolling ring linear motion guidance to explain when and how to use Okcoil 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.

Rolling Ring Linear Motion Converts Rotary Motion Input into Linear Output and Enables a Variable Speed, Bidirectional Linear Motion System Without Clutches, Cams or Gears

With the Okcoil rolling ring linear drive, travel direction and linear speed are both controlled by purely mechanical means. A variable speed linear motion system using an Okcoil drive does not usually require programming or electronic controls. Here’s how it’s done.

Specially Machined Bearings Contact Shaft

The inner race of a rolling ring bearing is machined to form a sort of “ridge” which runs around the entire inner race of the bearing. When mounted on a shaft, the bearing contacts the shaft at a single point on this ridge. The bearing may then be pivoted left or right on the shaft and still maintain point contact with the shaft.

In a rolling ring linear drive, three or four rolling ring bearings are housed inside the nut. When the nut is placed on a smooth shaft, and the shaft is rotated, compression is generated against the bearings’ inner races. This causes the bearings to roll along the length of the shaft. A payload attached to the nut is thereby moved linearly.

Pivoting the bearings changes their angle relative to the shaft. This angle determines the linear pitch and travel direction of the rolling ring drive.

Automatic Reversal

The shaft does not need to be reversed to change the travel direction of the drive unit. When the drive unit reaches the end of the stroke, a mechanical stop triggers the reversal mechanism which pivots the bearings and reverses the drive.

Pitch Control Lever Permits Adjustments to Linear Pitch

This purely mechanical control over direction and pitch makes it simpler to meet application requirements when compared to systems that require clutches, brakes, gearboxes, servo motors and complex control systems. It also minimizes operating and maintenance costs.

Rolling ring drives are supplied as stand alone units or on a shaft in a framework ready to be mounted in manufacturing equipment. Adjustable end stops enable control of stroke length.

Prices and Dimensions	TYPE: 3R-OK-A Rolling Ring Drive
	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) 3R-OK15-A (Shaft Ø15mm) 2) 3R-OK20-A (Shaft Ø 20mm) 3) 3R-OK22-A (Shaft Ø 22mm) 4) 3R-OK25-A (Shaft Ø 25mm) 5) 3R-OK30-A (Shaft Ø 30mm) 6) 3R-OK40-A (Shaft Ø 40mm) 7) 3R-OK50-A (Shaft Ø 50mm) 8) 3R-OK60-A (Shaft Ø 60mm)
Prices and Dimensions	TYPE: 4R-OK-A Rolling Ring Drive
	Description: OK-A-4R series rolling ring drives  have four rolling rings inside their case, which can supply double thrust force. Five types are available. Eight types are available. 1) 4R-OK15 (Shaft Ø15mm) 2) 4R-OK20 (Shaft Ø 20mm) 3) 4R-OK22 (Shaft Ø 22mm) 4) 4R-OK25 (Shaft Ø 25mm) 5) 4R-OK30 (Shaft Ø 30mm) 6) 4R-OK40 (Shaft Ø 40mm) 7) 4R-OK50 (Shaft Ø 50mm) 8) 4R-OK60 (Shaft Ø 60mm)

Dimensions

Introduce

Okcoil 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.

Okcoil has been the first brand and the first choice for thousands of Chinese machinery factories requiring rolling ring linear drives since Okcoil Machinery Company made the first one in 1985.

Okcoil 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. Okcoil 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, Okcoil provides expert rolling ring linear motion guidance to explain when and how to use Okcoil 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.

Model: OK-C-W Name: OK-C Rolling Ring Drive with Guide Wheel
Prices and Dimensions	3R-OK-C-W	4R-OK-C-W
	Three rolling rings inside. 1)  3R-OK15-C-W (Shaft Ø15mm) 2)  3R-OK20-C-W (Shaft Ø 20mm) 3)  3R-OK22-C-W (Shaft Ø 22mm) 4)  3R-OK25-C-W (Shaft Ø 25mm) 5)  3R-OK30-C-W (Shaft Ø 30mm) 6)  3R-OK40-C-W (Shaft Ø 40mm) 7)  3R-OK50-C-W (Shaft Ø 50mm) 8)  3R-OK60-C-W (Shaft Ø 60mm)	Four rolling rings inside, double thrust force. 1) 4R-OK15-C-W (Shaft Ø15mm) 2) 4R-OK20-C-W (Shaft Ø 20mm) 3) 4R-OK22-C-W (Shaft Ø 22mm) 4) 4R-OK25-C-W (Shaft Ø 25mm) 5) 4R-OK30-C-W (Shaft Ø 30mm) 6) 4R-OK40-C-W (Shaft Ø 40mm) 7) 4R-OK50-C-W (Shaft Ø 50mm) 8) 4R-OK60-C-W (Shaft Ø 60mm)
Model: OK-C-T Name: OK-C Rolling Ring Drive with 3-Roller Guide
Prices and Dimensions	3R-OK-C-T	4R-OK-C-T
	Three rolling rings inside. 1)  3R-OK15-C-T (Shaft Ø15mm) 2)  3R-OK20-C-T (Shaft Ø 20mm) 3)  3R-OK22-C-T (Shaft Ø 22mm) 4)  3R-OK25-C-T (Shaft Ø 25mm) 5)  3R-OK30-C-T (Shaft Ø 30mm) 6)  3R-OK40-C-T (Shaft Ø 40mm) 7)  3R-OK50-C-T (Shaft Ø 50mm) 8)  3R-OK60-C-T (Shaft Ø 60mm)	Four rolling rings inside, double thrust force. 1) 4R-OK15-C-T (Shaft Ø15mm) 2) 4R-OK20-C-T (Shaft Ø 20mm) 3) 4R-OK22-C-T (Shaft Ø 22mm) 4) 4R-OK25-C-T (Shaft Ø 25mm) 5) 4R-OK30-C-T (Shaft Ø 30mm) 6) 4R-OK40-C-T (Shaft Ø 40mm) 7) 4R-OK50-C-T (Shaft Ø 50mm) 8) 4R-OK60-C-T (Shaft Ø 60mm)
Model: OK-C-F Name: OK-C Rolling Ring Drive with 4-Roller Guide
Prices and Dimensions	3R-OK-C-F	4R-OK-C-F
	Three rolling rings inside. 1)  3R-OK15-C-F (Shaft Ø15mm) 2)  3R-OK20-C-F (Shaft Ø 20mm) 3)  3R-OK22-C-F (Shaft Ø 22mm) 4)  3R-OK25-C-F (Shaft Ø 25mm) 5)  3R-OK30-C-F (Shaft Ø 30mm) 6)  3R-OK40-C-F (Shaft Ø 40mm) 7)  3R-OK50-C-F (Shaft Ø 50mm) 8)  3R-OK60-C-F (Shaft Ø 60mm)	Four rolling rings inside, double thrust force. 1) 4R-OK15-C-F (Shaft Ø15mm) 2) 4R-OK20-C-F (Shaft Ø 20mm) 3) 4R-OK22-C-F (Shaft Ø 22mm) 4) 4R-OK25-C-F (Shaft Ø 25mm) 5) 4R-OK30-C-F (Shaft Ø 30mm) 6) 4R-OK40-C-F (Shaft Ø 40mm) 7) 4R-OK50-C-F (Shaft Ø 50mm) 8) 4R-OK60-C-F (Shaft Ø 60mm)

Model: OK-C-TB Name: OK-C Rolling Ring Drive with Three Bars Applicaitons: Suitable to high thrust applications
Prices and Dimensions	3R-OK-C-TB	4R-OK-C-TB
	Three rolling rings inside. 1)  3R-OK15-C-TB (Shaft Ø15mm) 2)  3R-OK20-C-TB (Shaft Ø 20mm) 3)  3R-OK22-C-TB (Shaft Ø 22mm) 4)  3R-OK25-C-TB (Shaft Ø 25mm) 5)  3R-OK30-C-TB (Shaft Ø 30mm) 6)  3R-OK40-C-TB (Shaft Ø 40mm) 7)  3R-OK50-C-TB (Shaft Ø 50mm) 8)  3R-OK60-C-TB (Shaft Ø 60mm)	Four rolling rings inside, double thrust force. 1) 4R-OK15-C-TB (Shaft Ø15mm) 2) 4R-OK20-C-TB (Shaft Ø 20mm) 3) 4R-OK22-C-TB (Shaft Ø 22mm) 4) 4R-OK25-C-TB (Shaft Ø 25mm) 5) 4R-OK30-C-TB (Shaft Ø 30mm) 6) 4R-OK40-C-TB (Shaft Ø 40mm) 7) 4R-OK50-C-TB (Shaft Ø 50mm) 8) 4R-OK60-C-TB (Shaft Ø 60mm)

Model: OK-C-TB-RW Name: OK-C Rolling Ring Drive with Three Bars and RW Guide Applicaitons: Suitable to high thrust applications
Prices and Dimensions	3R-OK-C-TB-RW	4R-OK-C-TB-RW
	Three rolling rings inside. 1)  3R-OK15-C-TB-RW (Shaft Ø15mm) 2)  3R-OK20-C-TB-RW (Shaft Ø 20mm) 3)  3R-OK22-C-TB-RW (Shaft Ø 22mm) 4)  3R-OK25-C-TB-RW (Shaft Ø 25mm) 5)  3R-OK30-C-TB-RW (Shaft Ø 30mm) 6)  3R-OK40-C-TB-RW (Shaft Ø 40mm) 7)  3R-OK50-C-TB-RW (Shaft Ø 50mm) 8)  3R-OK60-C-TB-RW (Shaft Ø 60mm)	Four rolling rings inside, double thrust force. 1) 4R-OK15-C-TB-RW (Shaft Ø15mm) 2) 4R-OK20-C-TB-RW (Shaft Ø 20mm) 3) 4R-OK22-C-TB-RW (Shaft Ø 22mm) 4) 4R-OK25-C-TB-RW (Shaft Ø 25mm) 5) 4R-OK30-C-TB-RW (Shaft Ø 30mm) 6) 4R-OK40-C-TB-RW (Shaft Ø 40mm) 7) 4R-OK50-C-TB-RW (Shaft Ø 50mm) 8) 4R-OK60-C-TB-RW (Shaft Ø 60mm)

Check dimensions of Okcoil rolling ring drives

Okcoil 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.

Okcoil has been the first brand and the first choice for thousands of Chinese machinery factories requiring rolling ring linear drives since Okcoil Machinery Company made the first one in 1985.

Okcoil 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, Okcoil provides expert rolling ring linear motion guidance to explain when and how to use Okcoil 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.