Full-Ball LM Guide Cross LM Guide Model CSR

Balls roll in four rows of raceways precision-ground on an LM rail and an LM block, and end plates incorporated in the LM block allow the balls to circulate. Since retainer plates hold the balls, they will not fall out even if the LM block is removed from the LM rail. This LM Guide has two rails intersecting at right angles integrated back-to-back into a single block with the same internal structure as the proven LM Guide Model HSR. It is machined with high precision so that the error in the perpendicularity of the six faces of the LM block is within 2 μm per 100 mm. The two rails are also machined with high precision in relative straightness. This results in extremely high orthogonal accuracy. Because an orthogonal LM System can be achieved with the Model CSR alone, conventional saddles are no longer necessary, enabling simplifi ed X-Y motion and a compact structure.

4-way Equal Load

Each row of balls is placed at a contact angle of 45° 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.

High Rigidity

Since balls are arranged in four rows in a well-balanced manner, this model is stiffagainst a moment, and smooth straight motion is ensured even a preload is applied to increase the rigidity. The rigidity of the LM blocks is 50% higher than that of a combination of two HSR LM blocks secured together back-to-back with bolts. Thus, CSR is an optimal LM Guide for building an X-Y table that requires high rigidity.

Drawing of Using an Inner Saddle