2026-07-22
Linear ball bearings, also known as linear bushings, are core linear motion components matched with solid cylindrical shafts. They realize unlimited-stroke linear movement relying on circulating steel ball rolling friction. Compared with traditional sliding bushings, linear ball bearings own ultra-low friction, high positioning precision, low running noise and simple daily maintenance, which makes them standard spare parts widely used in CNC machinery, automatic production equipment, industrial robots, 3D printers and precision testing instruments.
Our factory supplies full-series metric linear bearings manufactured under strict ISO and JIS tolerance standards. Our product range covers closed cylindrical type, round flange type, square flange type, lengthened type, open adjustable type and anti-corrosion stainless steel type. All linear bearings are made of high-quality GCr15 bearing steel, equipped with wear-resistant polyamide retainers and double-sided rubber UU dust seals. The sealing structure effectively blocks cutting chips, dust and moisture, extending the overall service life by 35% compared with ordinary low-cost linear bearings on the market.
LM series is the basic straight linear bushing. It adopts snap ring installation mode with compact outer dimension, which is suitable for general precision motion equipment. The suffix UU stands for double rubber dust sealing; LU represents lengthened standard bearing.
Hot-selling standard models: LM6UU, LM8UU, LM10UU, LM12UU, LM13UU, LM16UU, LM20UU, LM25UU, LM30UU, LM35UU, LM40UU, LM50UU, LM60UU
Hot-selling lengthened models: LM6LUU, LM8LUU, LM10LUU, LM12LUU, LM16LUU, LM20LUU, LM25LUU, LM30LUU
Typical core parameter reference: LM16UU: Inner bore 16mm, outer diameter 28mm, overall length 37mm, dynamic load capacity 810N LM20UU: Inner bore 20mm, outer diameter 32mm, overall length 42mm, dynamic load capacity 1060N
LMF series integrates circular mounting flange as one piece. Customers can fix the bearing directly with screws without matching extra bearing housing, which saves installation space and simplifies assembly process for compact automation equipment.
Main conventional models: LMF6UU, LMF8UU, LMF10UU, LMF12UU, LMF16UU, LMF20UU, LMF25UU, LMF30UU, LMF35UU, LMF40UU, LMF50UU, LMF60UU
Main lengthened flange models: LMF16LUU, LMF20LUU, LMF25LUU
LMK series features square mounting flange with four symmetrical fixing holes. The force bearing is uniform after installation, with excellent stability under reciprocating heavy load sliding. It is the preferred model for heavy-duty sliding platforms and large processing machinery.
Main conventional models: LMK6UU, LMK8UU, LMK10UU, LMK12UU, LMK16UU, LMK20UU, LMK25UU, LMK30UU, LMK35UU, LMK40UU, LMK50UU, LMK60UU
Main lengthened square flange models: LMK16LUU, LMK20LUU, LMK25LUU, LMK30LUU
LME series follows European industrial standard. Its outer sleeve is thicker than conventional LM series with stronger rigidity. It is highly popular among European automated machinery, laser cutting machines and packaging production line manufacturers.
Common mainstream models: LME12UU, LME16UU, LME20UU, LME25UU, LME30UU, LME40UU, LME50UU, LME60UU
This type adopts axial slit design. Users can adjust internal clearance through clamping screws to eliminate gaps generated after long-term wear. It is ideal equipment matching long transmission shafts and machinery working under high vibration environment, normally used together with SBR optical shaft and aluminum support guide rails.
Open split bushing models: LM16OPUU, LM20OPUU, LM25OPUU, LM30OPUU
SCS integrated open slide block models: SCS12UU, SCS16UU, SCS20UU, SCS25UU, SCS30UU, SCS35UU, SCS40UU, SCS50UU
Made of full SUS440C stainless steel material, this series passes strict salt spray test, resisting rust under humid, weak acid and weak alkali environment. Widely applied in food processing machinery, medical equipment and marine auxiliary equipment.
Main stainless steel complete models: LM8SUU, LM12SUU, LM16SUU, LMF20SUU, LMK25SUU
1.Ultra-Low Friction & Energy Saving The friction coefficient of our linear ball bearings is only 0.001~0.004, reducing driving power consumption by 30% compared with ordinary sliding bushings. No crawling phenomenon occurs during low-speed operation, realizing stable micron-level repeated positioning accuracy.
2.High Load Capacity & Extended Service Life Raw material GCr15 bearing steel is quenched to HRC62 high hardness with optimized steel ball circulation track design. Lengthened LUU models increase dynamic load by 40%, and the whole service life is 30% longer than generic low-quality bearings.
3.Full Dustproof Double Sealing Protection Double-sided nitrile rubber UU sealing rings lock internal high-temperature resistant lubricating grease, isolating dust, metal scraps, cooling liquid and moisture. Effectively avoid steel ball rust and premature failure, reduce equipment maintenance frequency.
4.Multiple Specifications & Customization Support We stock all above standard models for fast delivery. Meanwhile, we support customized linear bearings with special length, special clearance, special sealing structure and full stainless steel material according to customer drawings and samples. OEM & ODM orders are warmly welcomed.
5.Stable Interchangeability & Easy Replacement All series dimensions strictly comply with international general standards. Customers can directly replace old bearings without modifying equipment structure, saving replacement time and production downtime cost.
·Precision CNC engraving machines, laser cutting equipment, milling machines
·Industrial automatic assembly lines, conveying equipment, packaging machinery
·Desktop & industrial-grade 3D printers, scanning instruments
·Medical automation equipment, food processing machinery
·Testing equipment, optical precision instruments
·Robot sliding modules, automated warehouse handling equipment
·Woodworking machinery, printing machinery
