NSK POS12R Male Rod End Bearing
The NSK POS12R is a male thread type spherical plain rod end bearing with a right-hand thread configuration. It is designed to accommodate angular misalignment while transmitting radial and axial loads between connected components, making it ideal for applications requiring articulating movement such as steering linkages, hydraulic/pneumatic cylinders, and mechanical linkages.
The NSK POS12R is a male thread type spherical plain rod end bearing with a right-hand thread configuration. It is designed to accommodate angular misalignment while transmitting radial and axial loads between connected components, making it ideal for applications requiring articulating movement such as steering linkages, hydraulic/pneumatic cylinders, and mechanical linkages.
Key Specifications
| Parameter | Value | Unit | Description |
|---|---|---|---|
| Bearing Designation | POS12R | - | POS: Male thread type, 12: Nominal bore diameter, R: Right-hand thread |
| Bore Diameter (d) | 12 | mm | Inner diameter of the spherical bearing |
| Ball Diameter | 22.22 | mm | Diameter of the spherical ball |
| Thread Size (d3-6g) | M12×1.75 | - | Metric thread with 12mm diameter and 1.75mm pitch |
| Outer Diameter (D) | 30 | mm | Outer diameter of the bearing housing |
| Width (B) | 16 | mm | Width of the bearing housing |
| Overall Length (L2) | 69 | mm | Total length from thread end to housing end |
| Height (h) | 54 | mm | Distance from thread base to housing top |
| Shank Length (L1) | 33 | mm | Length of the threaded shank |
| Basic Dynamic Load Rating (Cr) | 10.0 | kN | Maximum dynamic load capacity |
| Basic Static Load Rating (Cor) | 15.8 | kN | Maximum static load capacity |
| Angular Misalignment Capacity | 13° | Degree | Maximum angle the bearing can accommodate |
| Weight | 0.085 | kg | Mass of the bearing |
| Sliding Contact Surface | Steel/Brass | - | Spherical sliding interface for smooth articulation |
| Body Material | Carbon Steel | - | Zinc-plated and chromate-treated for corrosion resistance |
| Race Material | Brass | - | Bronze liner for relubricatable operation |
| Ball Material | AISI 52100 Steel | - | Heat-treated to HRC 58-64, precision ground and polished |
Features and Benefits
- Relubricatable Design: Equipped with a grease fitting for periodic lubrication to maintain optimal performance and extend service life
- Angular Misalignment Compensation: Capable of accommodating up to 13° of angular misalignment, reducing stress on connected components
- Durable Construction: High-quality steel components with corrosion-resistant plating ensure reliable operation in harsh environments
- Precision Machining: Tight dimensional tolerances (JIS Class 2 for threads) ensure consistent performance and easy installation
- Versatile Application: Suitable for various industrial sectors including automotive, agricultural machinery, construction equipment, and general machinery
Application Notes
- Right-hand thread is standard for POS series bearings; use POS12L for left-hand thread configuration
- Recommended operating temperature range: -20°C to +120°C (with standard lubricants)
- Regular lubrication intervals depend on operating conditions (load, speed, temperature)
- For maintenance-free alternatives, consider NSK's PTFE-lined rod end bearings
