Separate Model HR｜LM Guide｜Product Information

Types

Highlight feature tags

Basic load rating (kN): Basic dynamic load rating 2.82 to 226 / Basic static load rating 3.48 to 232
Size : 918,1123,1530,2042,2555,3065,3575,4085,50105,60125

Long block LM Guide
Bolts mounted from above and below

Basic load rating (kN): Basic dynamic load rating 20.8 to 153 / Basic static load rating 24.3 to 161
Size : 2042,2555,3065,3575,4085,50105

Features

Structure and Features

Balls roll in two rows of raceways precision-ground on an LM rail and an LM block, and endplates incorporated in the LM block allow the balls to circulate. Since retainer plates hold the balls, they do not fall off. Because of the angular contact structure where two rows of balls rolling on the LM rail each contact the raceway at 45°, the same load can be applied in all directions (radial, reverse radial and lateral directions) if a set of LM rails and LM block is mounted on the same plane (i.e., when two LM rails are combined with an LM block on the same plane). Furthermore, since the sectional height is low, a compact and stable linear guide mechanism is achieved. This structure makes clearance adjustment relatively easy, and is highly capable of absorbing a mounting error.

Easy Installation

Model HR is easier to adjust a clearance and achieve more accuracy than cross-roller guides.

Self-adjustment Capability

Even if the parallelism or the level between the two rails is poorly established, the self-adjustment capability through front-to-front configuration of THK’s unique circular-arc grooves (DF set) enables a mounting error to be absorbed and smooth straight motion to be achieved even under a preload.

4-way Equal Load

When the two rails are mounted in parallel, 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 various orientations and in applications.

Sectional Dimensions Approximate to Cross-roller Guides

Since model HR utilizes endcaps for recirculation, cage/retainer creep cannot occur as with crossroller guides. In addition, the sectional shape of model HR is approximate to that of cross-roller guides, therefore, its components are dimensionally interchangeable with that of cross-roller guides.

Stainless Steel Type Also Available

A special type whose LM block, LM rail, and balls are made of stainless steel is also available.

Example of Clearance Adjustment

Design the clearance adjustment bolt so that it presses the center of the side face of the LM block.

Comparison of Model Numbers with Cross-roller Guides

Each type of LM Guide model HR has sectional dimensions approximate to that of the corresponding cross roller guide model.

Detailed information for each model number

Dimensional drawing/Dimensional table

THK Online Services
Member-Exclusive Content

These contents can be accessed

after registering as a member.

Log in/Register Click here for THK Online Services details

Benefit 1: Useful features

Easy product comparisonsHighlight feature
Save items for laterreview Favorites feature

Benefit 2: Exclusive content

Products	Contents
LM Guide	LM rail standard lengths and maximum length, tapped-hole type LM rail, frame for LM rail clamps, steel plate for LM rail clamps, etc.
Ball Screw	Axial clearance, maximum manufacturing length of shaft, etc.
Actuator	Movable part mass, etc.

Standard Length and Maximum Length of the LM Rail