SI18 Spherical Plain Bearings
| SI18 Spherical Plain Bearings | |||
|---|---|---|---|
| Part Number | SI18T/K | L5 | 10 |
| d | 18 | d4 | 25 |
| D | M18*1.5 | d5 | 31 |
| W | 27 | dk | 31.7 |
| B | 23 | L3 | 27 |
| C1 | 16.5 | a°≈ | 15 |
| h | 71 | Dynamic Load Co(N) | 26000 |
| d2 | 44 | Static Load Cor(N) | 42500 |
| L | 93 | Weight(Kg) | 0.32 |
SI18 Spherical Plain Bearing | SI18T / SI18K Stainless And Steel Types
The SI18 spherical plain bearing is a heavy-duty rod end joint bearing suited for medium and heavy industrial machinery and automation systems. It supports flexible multi-directional oscillation and tilting movement, with reliable self-aligning performance and stable low-friction operation. Available in SI18T and SI18K models in bearing steel and stainless steel, it delivers durable, cost-effective motion solutions for heavy-load industrial equipment.
SI18T vs SI18K | Model Differences
SI18T (Teflon Lined Type): Integrated PTFE liner provides excellent self-lubrication and ultra-low friction. It allows dry operation without regular grease maintenance, ideal for clean, dry environments and maintenance-free precision machinery applications.
SI18K (Open Lubrication Type): Standard open groove structure enables easy grease refilling and fast heat dissipation. With reliable wear resistance and stable heavy-load performance after lubrication, it is suitable for long-term continuous operation and general heavy-duty industrial scenarios.
Material Introduction
Bearing Steel: Manufactured from high-carbon chromium bearing steel with professional heat treatment. It features high surface hardness, strong wear resistance and stable structural rigidity, ensuring long service life for conventional indoor industrial equipment.
Stainless Steel: Premium stainless steel offers excellent rust-proof, waterproof and anti-corrosion performance. It runs stably in humid, dusty and corrosive conditions, perfect for outdoor machinery, medical devices, food-grade equipment and precision electronics.
Product Features
Robust heavy-duty standard structure for simple installation and replacement. Superior self-aligning capability compensates for mounting errors. Smooth low-friction multi-angle swing movement. Dual structure and material options fit diverse working environments. High precision and consistent long-term operating stability.
Application Scenarios
SI18 spherical plain bearings are widely used in heavy-duty automation machinery, industrial robotic arms, hydraulic systems, large textile machinery and heavy-load transmission mechanisms. SI18T is ideal for clean, dry maintenance-free scenarios; SI18K fits standard lubricated industrial environments, while stainless steel versions adapt to humid and corrosive working conditions.
