High-Speed Roller Ring

The Model RT uses rollers as a rolling element for higher rigidity. It also has two axial rows of rollers and one radial row of rollers suited for high-speed rotation. This model can be used for both outer and inner ring rotation.

Precautions on Use

Types

Point of Selection

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Features

Structure and Characteristics

The Model RT uses rollers as a rolling element for higher rigidity. It also has two axial rows of rollers and one radial row of rollers suited for high-speed rotation.

This model can be used for both outer and inner ring rotation.

Superior High-Speed Rotary Performance

The High-Speed Roller Ring Model RT has a roller contact structure suitable for high-speed rotation to suppress heat generation during high-speed rotation and achieves a Dpw·N value of 300,000.

Unit: min^-1

Model No.	Permissible rotational speed
RT228	1,290
RT297	990
RT445	660
RT665	440

Note:
Dpw·N value: roller pitch circle diameter (mm) × permissible rotational speed (min^-1)

Easy to Install

This product features mounting holes in the inner and outer rings, allowing the product to attach directly to shafts and housings. Because of that, other components that would be needed for mounting can be eliminated. In addition, you can choose the mounting surface orientation of the inner ring based on the way the product will be mounted to your equipment.

A Lineup That Offers Choices Based on Specifications

Because the internal and external diameters, width dimensions, and mounting hole positions are identical on the High-Speed Roller Ring for Multi-Functional Machine Rotary Tables Model RT and the Double-Row Angular Roller Ring Model RW, you can select either based on the specifications you require.

High-Speed (Dpw·N value of 300,000)

This product speeds up rotary tables and contributes to shortened cycle times through superior high-speed rotary performance. It can also be used for lathe turning.

High Rigidity

This product achieves high rigidity by increasing the number of rollers with a double-row structure. It is suited for the rotary tables of multi-functional machines.

External Dimensional Comparison

Unit: mm

Model RT Model No.	Model RW Model No.	Inner diameter	Outer diameter	Width
RT228	RW228	160	295	35
RT297	RW297	210	380	40
RT445	RW445	350	540	50
RT665	*RW665	580	750	60

*
The RW665 is a non-standard product. For details, contact THK.