Product Overview: The QJ 309 Four-Point Contact Ball Bearing
The QJ 309 is a high-precision, single-row angular contact ball bearing, specifically designed as a four-point contact bearing. With principal dimensions of 45mm Bore Diameter, 100mm Outer Diameter, and 25mm Thickness, it offers a compact and efficient solution for applications with combined loads. This bearing is engineered to accommodate axial loads in both directions, as well as radial loads, making it an excellent alternative to a matched pair of single-row angular contact bearings. Its unique raceway geometry allows a single bearing to handle bidirectional thrust loads, saving space and simplifying machine design.
As a leading supplier of industrial components, we ensure our QJ 309 bearings meet stringent quality standards, providing exceptional performance and reliability. This bearing is a vital component in machinery where high axial stiffness and bidirectional load support are required in a limited space. Explore our complete range of Angular Contact Ball Bearings to find the ideal solution for your specific application.
Key Features of the QJ 309 Bearing
- Four-Point Contact Design: Enables the bearing to support axial loads from both directions, providing bidirectional support.
- Combined Load Capability: Efficiently manages both radial and axial loads simultaneously.
- Space-Saving Solution: A single QJ 309 can replace two single-row angular contact bearings, reducing axial space requirements.
- High Axial Rigidity: Offers excellent stiffness, which is crucial for applications requiring precise shaft positioning.
- Separable Outer Ring: Often designed with a two-piece outer ring, which simplifies mounting and inspection procedures.
- High-Speed Performance: Suitable for applications that operate at high rotational speeds.
- Durable Construction: Manufactured from high-quality bearing steel for superior wear resistance and extended service life.
Common Applications of QJ 309 Bearings
- Industrial Gearboxes: Provides robust support for gears and shafts, handling complex load patterns.
- Pumps and Compressors: Used to support rotating shafts, managing both thrust and radial forces.
- Traction Motors: Ideal for electric motors where bidirectional axial loads are present.
- Agricultural Machinery: Employed in equipment like combines and tractors where components are subjected to heavy, varying loads.
- Robotics and Automation: Ensures precise movement and positioning in robotic arms and automated systems.
- Wind Turbines: Utilized in gearbox and pitch control systems to manage fluctuating loads.
- Lifting and Hoisting Equipment: Provides reliable support in cranes, winches, and other material handling machinery.
Benefits of Using the QJ 309 Bearing
- Simplified Machine Design: Eliminates the need for a second bearing for bidirectional axial support, reducing component count and complexity.
- Reduced Assembly Time: The use of a single bearing simplifies the mounting process compared to installing a matched pair.
- Cost-Effective: Often more economical than using two separate bearings, reducing both initial and maintenance costs.
- Improved Operational Efficiency: Low-friction design contributes to smoother operation and reduced energy consumption.
- Enhanced Reliability: Provides stable and reliable performance under combined loading conditions, minimizing downtime.
- Compact Footprint: Its ability to handle multiple load types in a single unit is ideal for designs with space constraints.
