SI28 Spherical Plain Bearings
| SI28 Spherical Plain Bearings | |||
|---|---|---|---|
| Part Number | SI28T/K | L5 | 14 |
| d | 28 | d4 | 37 |
| D | M27*2 | d5 | 46 |
| W | 41 | dk | 47.5 |
| B | 35 | L3 | 41 |
| C1 | 24 | a°≈ | 15 |
| h | 103 | Dynamic Load Co(N) | 55000 |
| d2 | 60 | Static Load Cor(N) | 75500 |
| L | 136 | Weight(Kg) | 0.82 |
SI28 Spherical Plain Bearing | SI28T / SI28K Stainless And Steel Types
The SI28 spherical plain bearing is a heavy-duty rod end joint bearing suitable for medium and heavy industrial machinery and automation systems. It enables flexible multi-directional oscillation and tilting movement with reliable self-aligning performance and low-friction stable operation. Available in SI28T and SI28K models with bearing steel and stainless steel materials, this bearing offers durable, cost-effective motion solutions for various heavy-load industrial equipment.
SI28T vs SI28K | Model Differences
SI28T (Teflon Lined Type): Equipped with a built-in PTFE liner for excellent self-lubrication and ultra-low friction. It supports dry operation without regular grease maintenance, ideal for clean, dry working environments and maintenance-free precision machinery applications.
SI28K (Open Lubrication Type): Standard open groove structure allows easy grease refilling and efficient heat dissipation. With stable wear resistance and strong heavy-load performance after lubrication, it fits long-term continuous operation and general heavy-duty industrial scenarios.
Material Introduction
Bearing Steel: Adopts high-carbon chromium bearing steel with professional heat treatment. It features high surface hardness, outstanding wear resistance and stable structural rigidity, effectively extending service life for conventional indoor industrial equipment.
Stainless Steel: Premium stainless steel provides excellent rust-proof, waterproof and anti-corrosion performance. It works stably in humid, dusty and corrosive environments, perfect for outdoor machinery, medical devices, food-grade equipment and precision electronic systems.
Product Features
Robust heavy-duty structure for simple installation and replacement. Excellent self-aligning capability compensates for mounting deviation. Smooth low-friction multi-angle swing movement. Dual structure and material options adapt to diverse working conditions. High precision and stable long-term operational performance.
Application Scenarios
SI28 spherical plain bearings are widely applied in heavy-duty automation machinery, industrial robotic arms, hydraulic systems, large textile machinery and heavy-load transmission mechanisms. SI28T suits clean, dry maintenance-free scenarios; SI28K fits standard lubricated industrial environments, and stainless steel versions are ideal for humid and corrosive working conditions.
