Miniature linear bearing use

2010-08-18 16:04
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The structure of linear motion ball bearing is that a retainer is installed in the outer ring, and the retainer is equipped with a plurality of steel balls, and it moves in an endless loop. Both ends of the retainer are fixed by inner spring retaining rings, and notched windows are provided on the linear rails where the steel balls work under force. This part is to make the loaded steel ball make rolling contact with the shaft. Relatively move with a very low coefficient of friction, so linear motion ball bearings are the most suitable bearings for mechanical equipment, automation equipment, energy-saving equipment, etc.

Linear motion bearings are now more and more widely used in general or special machinery industries such as electronics, machinery, instruments, robots, tool machinery, food machinery, packaging machinery, medical machinery, printing machinery, textile machinery, CNC machine tools, automobiles, etc. middle.

The advantages of using linear motion ball bearings:

1. Since the flow contact can make the starting friction resistance and the dynamic friction resistance extremely small, energy can be saved and a higher movement speed can be easily obtained.

2. The friction coefficient is not sensitive to the increase of the load. Therefore, the friction coefficient is extremely small under heavy load, and the accuracy is kept unchanged for a long time, and the service life of the machine can be maintained for a long time.

3. The linear motion bearing has good interchangeability, convenient and time-saving installation and use, and the mechanical structure is novel, small and light.

4. Save oil supply procedures and achieve the purpose of simplifying lubrication and maintenance.

5. Bearings with oil seals on both sides are also suitable for places where there is a lot of dust or foreign objects are easy to invade.

Classification of linear motion ball bearings:

The most widely used series of standard type has three different size series:

LM series: Metric size series (for Southeast Asian countries); LME series: Metric size series (for the United States). l Miniature series adapt to light, thin, short and small, and the needs of the times, ultra-small diameter size, inner diameter: 3, 4, 5MM. l Stainless steel outer ring and steel ball caps at both ends are made of stainless steel, and the retainer is made of plastic.

S, SL...UU l The open type cuts out a row of steel balls, and corresponding to the outer ring, it can obtain high rigidity and prevent the guiding mechanism of the shaft from warping. At the same time, it can obtain gap adjustability without loose fit.

LM……OP LME……OP l The gap adjustment type has a single-slit type along the long axis on the outer ring to adjust the housing of the fixed bearing to fit without looseness.

LM……ADJ LME……ADJ l Oil-sealed bearings are equipped with lip-shaped special synthetic rubber seals on one end or both ends, which are suitable for places where dust and foreign matter invade, and can keep lubricating oil from leaking.