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Linear Bearing

Linear bearings are a type of linear motion system used in conjunction with cylindrical shafts for linear travel. Since the load-bearing ball is in point contact with the bearing outer casing, the steel ball rolls with minimal friction resistance. Therefore, linear bearings have low friction and are relatively stable. They do not change with the bearing speed, and can achieve smooth linear motion with high sensitivity and precision. Linear bearing consumption also has its limitations. The most important one is that the bearing has poor impact load capacity and poor load-bearing capacity. Secondly, linear bearings vibrate and make more noise when moving at high speeds. The automatic selection of linear bearings is included. Linear bearings are widely used in sliding parts of industrial machinery such as precision machine tools, textile machinery, food packaging machinery, and printing machinery.

Design and variation

Product details

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Model number	Basic size			Basic load rating		Rated speed
				Dynamic state	Static	Reference speed	Limiting speed
	d [mm]	D [mm]	B [mm]	C [kN]	C₀ [kN]	[r/min]	[r/min]
LM16LUU	16	28	70
LM13LUU	13	23	61
LM12LUU	12	21	57
LM10LUU	10	19	55
LM8LUU	8	15	45
LM6LUU	6	12	35
LME80UU	80	120	165
LME60UU	60	90	125
LME50UU	50	80	100
LME40UU	40	62	80
LME30UU	30	47	68
LME25UU	25	40	58

Model number	Basic size			Basic load rating		Rated speed
				Dynamic state	Static	Reference speed	Limiting speed
	d [in]	D [in]	B [in]	C [Ibf]	C₀ [Ibf]	[r/min]	[r/min]
LM16LUU
LM13LUU
LM12LUU
LM10LUU
LM8LUU
LM6LUU
LME80UU
LME60UU
LME50UU
LME40UU
LME30UU
LME25UU

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Product type, design and form

Open-type linear bearings

shaped like a straight cylinder, with axial slits on the surface, used in situations where clearance adjustment is required, divided into two types: large opening and small opening

Flange-type linear bearings

With mounting flanges at the end or in the middle, which can be installed with screws, flanges are generally divided into three types: round, square and trimmed.

Straight-cylinder linear bearings

shaped like a cylinder, usually installed with a retaining ring, used in installations with smaller dimensions

Advantage

1. High precision and high sensitivity: Linear bearings adopt point contact design, which enables the steel balls to rotate with minimal friction resistance, thus achieving high-precision and smooth movement. This design not only improves the sensitivity of movement, but also maintains high precision at high speeds. ‌

‌2. Low friction and stability: Linear bearings have low friction resistance, good stability, and do not change with bearing speed. They can provide linear motion with high sensitivity and high precision. ‌

‌3. Easy maintenance and low cost: Linear bearings are easy to assemble and disassemble, simple to maintain, do not require frequent lubrication, and have low cost. ‌

‌4. Compact structure and light weight: Linear bearings have a compact structure, light weight, and small axial size, which are suitable for application scenarios that need to save space and weight. ‌

5. Good wear resistance: Linear bearings are made of high-strength and wear-resistant alloy materials, can withstand large workloads and wear, and have a long service life. ‌

‌6. Applicable to a variety of working conditions: Linear bearings are not only suitable for conventional working conditions, but also can be used under special working conditions such as high temperature and high load, such as continuous casting machines, rolling mills and steel pipe rolling equipment. ‌

Application

Linear bearings are suitable for a variety of industrial fields, such as machine tools, metallurgical machinery, construction machinery, aviation, automobiles, light industry, etc. ‌ Especially performs well in high-speed machining centers, drilling and milling centers, lathes, grinders and other equipment.