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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]
KH5070	50	62	70
KH4060	40	52	60
LH3050	30	40	50
KH2540	25	35	40
KH2030	20	28	30
KH1630	16	24	30
KH1428	14	21	30
KH1228	12	19	28
KH1026	10	17	26
KH0824	8	15	24
KH0622	6	12	22
LMH30LUU	30	45	123

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]
KH5070
KH4060
LH3050
KH2540
KH2030
KH1630
KH1428
KH1228
KH1026
KH0824
KH0622
LMH30LUU

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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.