INA 81109-TV Cylindrical Roller Thrust Bearings 45x65x14mm
The INA 81109-TV is a single-direction cylindrical roller thrust bearing manufactured by Schaeffler Group's INA brand. This bearing type is specifically designed to accommodate heavy axial loads while requiring minimal axial space, making it ideal for applications where thrust ball bearings lack sufficient load-carrying capacity. The bearing consists of three separable components: an axial cylindrical roller and cage assembly (K81109-TV), a housing locating washer (GS 81109), and a shaft locatin
The INA 81109-TV is a single-direction cylindrical roller thrust bearing manufactured by Schaeffler Group's INA brand. This bearing type is specifically designed to accommodate heavy axial loads while requiring minimal axial space, making it ideal for applications where thrust ball bearings lack sufficient load-carrying capacity. The bearing consists of three separable components: an axial cylindrical roller and cage assembly (K81109-TV), a housing locating washer (GS 81109), and a shaft locating washer (WS 81109).
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Bearing Type | Single Direction Cylindrical Roller Thrust Bearing | - |
| Inner Diameter (d) | 45 | mm |
| Outer Diameter (D) | 65 | mm |
| Height/Width (H/B) | 14 | mm |
| Cage Material | Polyamide (Nylon) - designated by suffix "TV" | - |
| Dynamic Load Rating (Ca) | 59 | kN (13,264 lbs) |
| Static Load Rating (C0a) | 140 | kN (31,472 lbs) |
| Fatigue Limit Load (Cua) | 16.3 | kN (3,664 lbs) |
| Reference Speed (nθr) | 1,970 | rpm |
| Limiting Speed (nlim) | 3,800 | rpm |
| Closure Type | Open | - |
| Bore Type | Parallel | - |
Design Features & Benefits
- Separable Components: All three parts (roller and cage assembly, housing washer, shaft washer) are separable, facilitating easy mounting, dismounting, and maintenance.
- High Load Capacity: Engineered to handle extremely heavy axial loads in one direction, providing high stiffness for precise positioning applications.
- Space-Efficient Design: Requires minimal axial installation space while delivering maximum load-bearing performance.
- Polyamide Cage: The TV suffix indicates a polyamide cage that offers excellent wear resistance, low friction, and good chemical stability.
- Interchangeable Components: Allows for component interchangeability within the same bearing series for inventory flexibility.
Suffix Explanation
- 81109: Base bearing number identifying size and series
- -TV: Designates a polyamide (nylon) cage material
Typical Applications
This bearing finds common use in various industrial applications including:
- Gearboxes and transmissions
- Machine tool spindles
- Hydraulic pumps and motors
- Presses and forming machines
- Conveyor systems
- Heavy-duty equipment requiring high axial load support
Installation Notes
For optimal performance:
- Ensure proper alignment of all components during installation
- Apply appropriate lubrication based on operating conditions (temperature, speed, load)
- Use correct mounting tools to avoid damage to bearing surfaces
- Maintain specified clearance/pretension as per application requirements
The INA 81109-TV represents a reliable solution for demanding axial load applications, combining robust construction with space-saving design and easy maintenance capabilities characteristic of INA's high-quality bearing products.
