INA ZARF40115-L-TV Needle Roller/Axial Cylindrical Roller Bearings 40×115×93 mm
The INA ZARF40115-L-TV is a high-performance combination bearing specifically engineered for precision ball screw support applications in machine tools and industrial automation systems. It integrates a radial needle roller bearing with a bidirectional axial cylindrical roller bearing in a single compact unit, providing exceptional rigidity and load-carrying capacity for demanding drive systems requiring both radial support and high axial stiffness.
The INA ZARF40115-L-TV is a high-performance combination bearing specifically engineered for precision ball screw support applications in machine tools and industrial automation systems. It integrates a radial needle roller bearing with a bidirectional axial cylindrical roller bearing in a single compact unit, providing exceptional rigidity and load-carrying capacity for demanding drive systems requiring both radial support and high axial stiffness.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Model Number | ZARF40115-L-TV | - ZARF: Basic series designation for combined needle/axial cylindrical roller bearings- 40: Inner diameter (d) = 40 mm- 115: Outer diameter (D) = 115 mm- L: With locating washer for precise axial positioning- TV: Full complement (no cage) design for maximum load capacity (replaces older TN designation) |
| Dimensions | 40 × 115 × 93 mm | Standard bearing dimensions (d × D × B) - inner diameter × outer diameter × width |
| Bearing Type | Needle Roller/Axial Cylindrical Roller Combination Bearing | Double-direction thrust capability with radial support for ball screw applications |
| Load Capacity | High | Optimized for heavy axial loads in both directions and moderate radial loads; full complement design (TV) provides maximum number of rolling elements |
| Design Features | Full complement (TV), with locating washer (L) | Enhanced load capacity compared to caged versions; locating washer ensures accurate axial positioning and simplifies mounting |
| Material & Quality | Premium bearing steel | Manufactured to ISO P0 (ABEC 1) precision class for reliable performance in industrial applications |
| Weight | Approximately 2.7 kg | Typical weight for this size class |
Technical Advantages
- Combined Load Support: Integrates radial needle roller bearing and bidirectional axial cylindrical roller bearing in one unit, reducing assembly complexity and space requirements
- High Rigidity: Full complement design (TV) provides maximum number of rolling elements, ensuring exceptional rigidity for precision positioning applications
- Precise Positioning: The L version includes a locating washer that guarantees accurate axial location against the shaft shoulder, simplifying bearing arrangement setup
- Low Friction: Optimized raceway geometry minimizes friction, contributing to energy efficiency and extended service life
- Cost-Effective: Single unit replaces multiple bearing components, reducing overall system costs while maintaining performance
- Easy Maintenance: Designed for simple installation and replacement in standard ball screw bearing configurations
Applications
The ZARF40115-L-TV is primarily used in:
- Precision machine tools (milling, turning, grinding machines)
- Industrial robots and automated production lines
- High-precision linear motion systems requiring both radial and axial rigidity
- Ball screw drives in CNC machinery and positioning equipment
- Heavy-duty industrial applications with high axial load requirements
Installation Notes
- This bearing is typically mounted in pairs (often with a ZARF40115TN or similar) to create a complete ball screw support arrangement
- The locating washer (L) should be positioned against the shoulder of the shaft for accurate axial location
- Proper lubrication with high-quality grease or oil is essential for achieving optimal performance and service life
- The TV designation indicates a full complement design, which may require special consideration for lubrication distribution compared to caged bearings
- Ensure proper alignment during installation to avoid premature wear and maximize bearing lifespan
