SKF SIKB 8 F Rod End Bearing
The SKF SIKB 8 F is a maintenance free female threaded rod end bearing designed for applications requiring articulation and precise motion control. This spherical plain bearing features a steel/PTFE fibre-reinforced polymer sliding contact combination that eliminates the need for external lubrication, making it ideal for use in areas with limited maintenance access or where contamination from lubricants is a concern.
The SKF SIKB 8 F is a maintenance free female threaded rod end bearing designed for applications requiring articulation and precise motion control. This spherical plain bearing features a steel/PTFE fibre-reinforced polymer sliding contact combination that eliminates the need for external lubrication, making it ideal for use in areas with limited maintenance access or where contamination from lubricants is a concern.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Bore diameter (d) | 8 | mm |
| Outside diameter, housing eye (d₂) | max. 25 | mm |
| Width, bearing inner ring (B) | 12 | mm |
| Width, housing eye (C₁) | max. 9.5 | mm |
| Thread designation (G) | M 8 | - |
| Thread direction | Right-hand | - |
| Thread tolerance | 6H | - |
| Wrench size (w) | 14 | mm |
| Height from shank end face to centre of rod end eye (h₁) | 36 | mm |
| Angle of tilt (α) | 14 | ° |
| Raceway diameter, inner ring (dₖ) | 15.875 | mm |
| Housing diameter, shank (d₃) | max. 17 | mm |
| Housing diameter, shank (d₄) | min. 12 | mm |
| Length of thread (l₃) | min. 12 | mm |
| Length (height) of housing (l₄) | max. 50 | mm |
| Basic dynamic load rating (C) | 7.1 | kN |
| Basic static load rating (C₀) | 11.4 | kN |
| Specific dynamic load factor (K) | 50 | N/mm |
| Material constant (Kₘ) | 530 | - |
| Weight | approx. 0.047 | kg |
Design and Material Features
- Sliding contact combination: Steel/PTFE fibre-reinforced polymer (maintenance free)
- Housing material: Steel
- Inner ring material: Bearing steel
- Outer ring material: Drawn steel
- Sealing: Open enclosure (no seal)
- Lubrication: No lubrication hole (maintenance free design)
- Radial clearance: Normal (CN)
Applications
The SKF SIKB 8 F rod end bearing is suitable for various industrial applications including:
- Robotics and automation systems
- Machine tools
- Textile machinery
- Printing equipment
- Packaging machinery
- Agricultural machinery
- Construction equipment
Its maintenance free design and ability to accommodate 14° of misalignment make it particularly valuable in applications with dynamic loads and oscillating movements.
