Introduction and application of linear bearings

Linear bearing introduction:

Linear bearings are linear motion systems for wireless travel with cylindrical shafts. Since the bearing ball is in point contact with the bearing jacket, the linear bearing has small friction and is relatively stable, and does not change with the bearing speed, and can obtain a smooth linear motion with high sensitivity and high precision.

Uses and features:

1. Linear bearings are widely used in sliding parts of industrial machinery such as precision machine tools, textile machinery, food packaging machinery, printing machinery, etc.

2. Linear bearings are used in precision equipment such as computers and their peripheral machines, various measuring instruments, automatic recorders, and three-dimensional measuring devices.

3. Multi-axis drilling machine, punching machine, tool grinding machine, automatic gas cutting machine, printer, card sorting machine, packaging machine, etc.

Features: low noise, low friction, high precision, high life. Since the ball and the linear axis are in point contact, the friction is small and the motion accuracy is high.

Match:

Main types of linear bearings:

Straight cylindrical bearing

Flanged linear bearing

Box type linear bearing

Linear bearing with clamping handle

1. Straight cylindrical linear bearing:

Straight cylindrical linear bearings are further divided into:

1. Ordinary type, long type, is the most common type of linear bearing.

2. Open type, cut off a set of loops so that the rail support can pass.

3. Clearance adjustment type, the outer diameter is slit, and the gap can be adjusted.

4. Stamped outer ring type, the outer ring is stamped and formed, the standard type is compact and the price is low.

5. Stroke type, can perform rotary motion, limited linear motion and compound motion

6. Self-aligning type, with self-aligning function, adjusting the straightness of the guide shaft is insufficient.

2. Flanged linear bearing

1. Flanged linear bearing single lining type, double lining type.

2. Single-line type and double-line type with flange-guided linear bearing.

3. Flanged intermediate linear bearing

Three. Box type linear bearing

4. Linear bearing with clamping handle

It is divided into a left handle type and a right handle type, and the bushing has a single bushing and a double bushing.

Five. Material description of linear bearing

1. Outer ring - SUJ2/SUS440C (GCr15/9Cr18)

2. Retainer---resin, stainless steel

3. Rolling steel ball---SUJ2/SUS440C

4. Sealing ring --- nitrile rubber, stainless steel, carbon steel