SI3 Spherical Plain Bearings
| SI3 Spherical Plain Bearings | |||
|---|---|---|---|
| Part Number | SI3T/K | L5 | - |
| d | 3 | d4 | 5 |
| D | M3*0.5 | d5 | 6.5 |
| W | 5.5 | L3 | 10 |
| B | 6 | a°≈ | - |
| C1 | 4.5 | Dynamic Load Co(N) | 1500 |
| h | 21 | Static Load Cor(N) | 3580 |
| d2 | 12 | Weight(Kg) | 0.06 |
| L | 27 | ||
SI3 Rod End Bearing | Spherical Plain Joint Bearing High Precision
The SI3 rod end bearing is a miniature internal thread spherical plain joint bearing, widely used for angular swing, misalignment compensation and linkage transmission in compact mechanical systems. Designed with a spherical sliding inner ring and integrated rod end housing, the SI3 joint bearing flexibly adapts to dynamic angle deviation, effectively eliminating mechanical jamming and assembly stress during reciprocating and swinging motion. It features low friction, high structural rigidity and stable cyclic operation performance, suitable for light-load, high-frequency micro motion equipment. To fit different industrial working conditions, the SI3 rod end bearing is available in five material options: carbon steel, 304 stainless steel, 316 stainless steel, 420 stainless steel and 440 stainless steel, covering economical, sanitary, wear-resistant and anti-corrosion application scenarios.
SI3 Bearing Material Performance
Carbon Steel: Standard industrial base material with uniform hardness and excellent anti-fatigue capacity. Carbon steel SI3 rod end bearings deliver stable wear resistance and smooth spherical sliding in dry and normal-temperature environments. With outstanding cost performance, it is the best choice for mass production automation linkage mechanisms and conventional general machinery equipment.
304 Stainless Steel: Food-grade rust-proof stainless steel with superior oxidation and moisture corrosion resistance. It avoids surface rust and contamination in humid, open and clean working environments. Featuring non-toxic and easy-clean properties, 304 stainless steel SI3 bearings are widely used in food processing machinery, medical equipment and sanitary-grade precision linkage systems.
316 Stainless Steel: Marine-grade anti-corrosion material with strong resistance to salt spray, acid, alkali and mild chemical erosion. It maintains stable structural strength and motion accuracy in coastal high-humidity and light chemical environments, ideal for marine instruments, aquatic equipment and chemical miniature connecting mechanisms.
420 Stainless Steel: High-toughness martensitic stainless steel with balanced corrosion resistance and high surface hardness. It provides excellent anti-wear performance and precise dimensional stability during long-term repeated swinging and reciprocating movement, greatly improving the service life of cyclic operating precision equipment.
440 Stainless Steel: Ultra-high hardness stainless steel with top-level abrasion resistance and structural stability. It resists heavy friction and harsh working conditions, maintaining accurate angular transmission for a long time, and is specially applied to high-end precision machinery and high-cycle industrial equipment.
Core Advantages And Industrial Applications
The SI3 internal thread rod end joint bearing features compact size, flexible angular deflection, reliable misalignment compensation and low-friction smooth operation. Diversified material grades fully meet industrial demands for cost control, rust prevention, wear resistance and corrosion resistance. As a core micro linkage connector, the SI3 bearing is extensively used in miniature robotic arms, drone steering structures, hydraulic micro cylinders, optical adjustment instruments, automated small sliding mechanisms and portable precision mechanical equipment. It provides high-stability, low-maintenance and long-service-life motion connection solutions for modern miniaturized industrial and commercial precision automation systems.
