Product Overview: The QJ 307 Four-Point Contact Ball Bearing
The QJ 307 is a specialized single-row angular contact ball bearing, meticulously engineered to handle axial loads in both directions. With principal dimensions of 35x80x21mm, this bearing features unique raceway grooves that enable it to sustain radial loads and bi-directional axial loads. Its four-point contact design allows a single bearing to replace two single-row angular contact bearings arranged back-to-back or face-to-face, resulting in a more compact and space-saving design. This makes the QJ 307 an excellent choice for applications where space is limited but high axial load capacity is required.
Manufactured from high-grade bearing steel, the QJ 307 ensures durability and reliable performance in demanding industrial environments. As a leading supplier of mechanical components, we provide bearings that meet stringent industry standards for quality and precision.
Key Features of the QJ 307 Bearing
- Four-Point Contact Design: Raceways are designed to support axial loads from both directions, providing robust performance in reversing applications.
- Bi-Directional Axial Load Capacity: Capable of accommodating high axial loads in two directions with a single bearing unit.
- Space-Saving Solution: Its ability to replace a matched pair of angular contact bearings allows for more compact and simplified machinery designs.
- Radial Load Support: In addition to its primary axial function, it can also support moderate radial loads.
- High Precision: Manufactured to tight tolerances to ensure smooth and efficient operation, minimizing friction and wear.
- Durable Construction: Made from premium bearing steel for exceptional hardness, wear resistance, and a long service life.
Common Applications
- Industrial Gearboxes: Ideal for gear shafts where axial positioning and bi-directional load support are critical in a limited space.
- Pumps and Compressors: Used to support shafts subjected to reversing axial forces, ensuring stability and efficiency.
- Robotics and Automation: Provides precise rotational support in robotic arms and automated systems with complex load cycles.
- Traction Motors: Suitable for electric motors where axial forces can occur in both directions during operation.
- Agricultural Machinery: Employed in equipment like tillers and harvesters that experience variable and multi-directional loads.
- Wind Turbines: Used in gearbox and pitch control systems to manage changing axial forces.
- Lifting and Hoisting Equipment: Provides reliable support in crane swivels and other hoisting mechanisms.
Benefits of Using the QJ 307 Bearing
- Simplified Assembly: Using one bearing instead of two reduces component count and simplifies the mounting process, saving time and labor.
- Reduced Housing Space: The compact design requires less axial space, enabling smaller and lighter machine construction.
- Cost-Effectiveness: A single four-point contact bearing is often more economical than a matched pair of angular contact bearings.
- Enhanced Rigidity: Provides high axial stiffness, which is crucial for applications requiring precise shaft positioning.
- Versatile Performance: The combination of bi-directional axial and radial load support makes it a versatile solution for various industrial needs.
- Lower Maintenance Requirements: A simplified bearing arrangement with fewer components can lead to reduced maintenance and a lower risk of failure.
