Linear Motion Guides

The LM Guide (Linear Motion Guide) is our main product, incorporating a part with a linear rolling motion into practical usage for the first time in the world. It realizes the development of high-precision, high-rigidity, energy-saving, high-speed machines with long service lives.
Linear Motion Guides
Model
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Product Type
Guide Method

Each row of balls is placed at a contact angle of 45 degree so that the rated loads applied to the LM block are uniform in the four directions (radial, reverse radial and lateral directions), enabling the LM Guide to be used in all orientations. Use of the ball cage eliminates friction between balls and increases grease retention, thus to achieve low noise, high speed and long-term maintenance-free operation.

Global Standard Caged Ball LM Guide (SHS)

Caged Ball Technology

SHS Load Diagram

SHS Load Diagram

The compact design with a low sectional height and the ball contact structure at 90° in the radial direction make this model an optimal model for horizontal guide units. Use of the ball cage eliminates friction between balls and increases grease retention, thus to achieve low noise, high speed and long-term maintenance-free operation.

Radial Type Caged Ball LM Guide (SSR)

Caged Ball Technology

SSR Load Diagram

SSR Load Diagram

Model SHW, which has a wide LM rail and a low center of gravity, is optimal for locations requiring space saving and large Mc moment rigidity. Use of the ball cage eliminates friction between balls and increases grease retention, thus to achieve low noise, high speed and long-term maintenance-free operation.

Wide, Low Gravity Center Caged Ball LM Guide (SHW)

Caged Ball Technology

SHW Load Diagram

SHW Load Diagram

Caged Ball LM Guide model SRS has a structure where two raceways are incorporated into the compact body, enabling the model to receive loads in all directions, and to be used in locations where a moment is applied with a single rail. In addition, use of ball cages eliminates friction between balls, thus achieving high speed, low noise, acceptable running sound, long service life, and long-term maintenance-free operation.

Miniature Caged Ball LM Guide (SRS)

Caged Ball Technology

SRS Load Diagram

SRS Load Diagram

Each row of balls is placed at a contact angle of 45 degree so that the rated loads applied to the LM block are uniform in the four directions (radial, reverse radial and lateral directions), enabling the LM Guide to be used in all orientations and in extensive applications.

HSR Load Diagram

HSR Load Diagram

The compact design with a low sectional height and the ball contact structure at 90° in the radial direction make this model an optimal model for horizontal guide units.

SR Load Diagram

SR Load Diagram

Model HRW, which has a wide LM rail and a low center of gravity, is optimal for locations requiring space saving and large Mc moment rigidity.

HRW Load Diagram

HRW Load Diagram

THK's miniature LM Guide series with with uncaged, full-complement bearings. These models are capable of receiving loads in all directions, and a single-rail guide can adequately operate under a small moment load.

Miniature LM Guide Load Diagram

Miniature LM Guide Load Diagram

Since model GSR has a low center of gravity structure with a low overall height, the machine can be downsized.* Model GSR cannot be used in single-axis applications.

GSR Load Diagram

GSR Load Diagram

Model HR is easier to adjust a clearance and highly capable of absorbing a mounting error. When the two rails are mounted in parallel, each row of balls is placed at a contact angle of 45 degree so that the rated loads applied to the LM block are uniform in the four directions (radial, reverse radial and lateral directions).

HR Load Diagram

HR Load Diagram