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New Clean Pro-PR Cross Roller Way (CRW Series)

CRW / JTEKT Corporation (Official website) / Listed on page 17 of the document

A cross roller way with cylindrical rollers arranged alternately and orthogonally, using two V-shaped planes as raceway surfaces. A high-precision linear motion bearing capable of receiving loads in all directions.

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New Clean Pro-PR Cross Roller Way (CRW Series) on page 17 of JTEKT Corporation "特殊環境用軸受シリーズ 軸受・セラミック軸受 (EXSEV Bearings and CERAMIC Bearings for Extreme Special Environments)"
Source: JTEKT Corporation「特殊環境用軸受シリーズ 軸受・セラミック軸受 (EXSEV Bearings and CERAMIC Bearings for Extreme Special Environments)」page 17
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Specifications

Track rail length L 80～600 mm
Basic dynamic load rating C 20.3 kN

How to choose Linear Guides

Points to check when selecting, with the values for this product (New Clean Pro-PR Cross Roller Way (CRW Series)).

  1. 1. Select the type and size to match the shaft diameter

    Linear ball bearings are used with the outer sleeve mounted on a shaft, so the shaft diameter d must match the shaft. The listed products have shaft diameters of 3 to 60 mm. The type and size are determined by the bearing number, so check the outer diameter D together with the shaft diameter and confirm that it fits the housing bore dimensions.

  2. 2. Check the basic dynamic load rating for load and life

    This product: Basic dynamic load rating C 20.3 kN

    The basic dynamic load rating C is the reference load used when calculating rated life. The listed products range from 20.3 to 323 N. Determine the required life from the actual applied load and operating conditions, then select a size with sufficient margin over C, or a roller type or double-block type.

  3. 3. Use the static load rating for stationary and shock loads

    The basic static load rating C0 is the reference for the permissible load when the unit is stationary or subjected to shock loads. To prevent permanent deformation of the rolling elements and raceways, secure a static safety factor against the maximum load. This is especially important in applications with moment loads.

  4. 4. Match rail length and stroke

    This product: Track rail length L 80～600 mm

    In finite-stroke types such as crossed roller ways, the usable stroke is determined by the rail length L and the length of the retainer. The listed products have rail lengths of 80 to 600 mm. Confirm that the length is sufficient for the required stroke and fits within the installation space.

  5. 5. Determine accuracy grade and preload by application

    Accuracy classes such as parallelism of travel and preload (the tightness of the internal clearance) affect positioning accuracy and rigidity. Increasing preload raises rigidity but also increases frictional resistance. Select based on the balance between the accuracy required by the equipment and smooth, light motion.

  6. 6. Select materials and specifications suited to the environment

    In cleanroom, vacuum, corrosive, and high-temperature environments, the body and rolling element materials, lubrication method, and presence of seals differ from standard products. To prevent particle generation, gas emission, and rust, select products with materials and specifications suited to the operating environment. Where necessary, also check non-magnetic or insulating specifications.

This guide was written by AI based on the listed products' documents and specification items.

About Linear Guides and all products

Description

A series from CRW1 to CRW6, with dimension tables showing differences in rail length and number of cylindrical rollers. Basic dynamic load rating, basic static load rating, and permissible load are indicated. An New Clean Pro-PR specification with low dust generation and vacuum compatibility is also available.

Features

  • Supports loads in all directions
  • Extremely high precision and smooth linear motion
  • Compatible with vacuum and clean environments

Applications

  • Semiconductor manufacturing equipment
  • Vacuum equipment
  • Clean environment equipment

FAQ

Q. What loads can the New Clean Pro-PR Cross Roller Way (CRW Series) receive?
A. It is a high-precision linear motion bearing that can receive loads in all directions.
Q. What range of rail lengths can be selected for the CRW Series?
A. The rail length L ranges from 80 to 600 mm.
Q. Can the CRW Series be used in vacuum or clean environments?
A. It is compatible with vacuum and clean environments. A New Clean Pro-PR specification with low dust generation and vacuum compatibility is also available.
Q. What is the basic dynamic load rating of the CRW Series, and what items can be checked in the dimension tables?
A. The basic dynamic load rating C is 20.3 kN. The series from CRW1 to CRW6 has dimension tables showing differences in rail length and number of cylindrical rollers, and also indicates the basic static load rating and permissible load.

Written by AI based on the content of the source documents.

Source documents

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