What is lm block bearing?

1. Introduction to lm block bearing

lm block bearing is a component that uses rolling friction instead of sliding friction. It consists of an outer ring, a steel ball, a cage and a retaining ring. The inner wall of the outer ring has several (no less than 3) longitudinal tracks. The steel ball rolls cyclically along the groove of the cage between the outer sleeve and the guide shaft.

2. Characteristics of lm block bearing

1. lm block bearing is a linear motion system produced at low cost, used for unlimited stroke and cylindrical shaft.

2. Since the bearing ball and the shaft are in point contact, the load is small. The steel ball rotates with very small friction resistance, so that high-precision smooth motion can be obtained.

3. lm block bearing is an integral sleeve, which can only bear radial load and perform linear reciprocating motion. The radial clearance is divided into adjustable type and non-adjustable type.

4. It can be made into ordinary grade (P) and precision grade (J) accuracy.

3. Application of lm block bearing
lm block bearing is widely used in precision equipment such as electronic equipment, tensile testing machines, digital three-dimensional coordinate measuring equipment, as well as sliding parts of industrial machinery such as multi-axis machine tools, punching machines, tool grinders, automatic cutting machines, printers, card sorting machines and food packaging machines.

4. Effect of temperature on lm block bearing
When the working temperature of lm block bearing exceeds 120℃, the bearing parts will lose their original dimensional stability. Therefore, for bearings with working temperatures higher than 120℃, special requirements can be made to HRB to select bearings with special heat treatment.

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