Product Overview: The QJ 306 Four-Point Contact Ball Bearing
The QJ 306 is a high-performance four-point contact ball bearing, engineered to support complex load conditions within a compact design. With principal dimensions of 30mm bore diameter, 72mm outer diameter, and 19mm thickness, this bearing is a specialized type of Angular Contact Ball Bearing. Its unique raceway geometry allows it to accommodate axial loads in both directions, as well as radial loads, making it an excellent space-saving solution for applications where a single bearing must provide bidirectional axial location.
A key feature of the QJ 306 is its two-piece inner ring, which enables the bearing to be easily mounted and dismounted. This design allows for a large number of balls, contributing to its high load-carrying capacity. As a leading supplier of industrial components, we ensure our QJ 306 bearings meet stringent quality standards, providing reliability and efficiency for demanding machinery.
Key Features of the QJ 306 Bearing
- Four-Point Contact Design: The gothic arch raceway profile allows the bearing to support axial loads from both directions, simplifying shaft arrangements.
- Bidirectional Axial Support: Functions like a double-row angular contact bearing but requires significantly less axial space.
- Split Inner Ring: Facilitates easy assembly and disassembly of the bearing, simplifying maintenance procedures.
- High Load Capacity: The design accommodates a maximum number of balls, providing high radial and axial load-carrying capabilities.
- High-Speed Performance: Suitable for applications requiring high rotational speeds due to its low-friction characteristics.
- Precision Construction: Manufactured from high-grade bearing steel to ensure dimensional accuracy and a long operational lifespan.
Common Applications of QJ 306 Bearings
- Industrial Gearboxes: Provides precise shaft location and supports combined loads in transmission systems.
- Pumps and Compressors: Ideal for supporting shafts in pumps where bidirectional axial forces are present.
- Traction Motors: Used in electric motors for railways and other vehicles to handle complex load cycles.
- Robotics and Automation: Offers a compact and rigid bearing solution for robotic arms and positioning systems.
- Agricultural Machinery: Suitable for equipment like harvesters and balers that experience varying load directions.
- Wind Turbines: Can be used in gearbox and pitch systems where space is limited and reliability is critical.
- Medical Equipment: Applied in advanced imaging systems and other precision machinery requiring stable rotational support.
Benefits of Using the QJ 306 Bearing
- Space-Saving Design: Eliminates the need for a second bearing for axial location, reducing housing size and overall machine weight.
- Simplified Mounting: The separable inner ring makes installation and removal more straightforward than with conventional bearing pairs.
- Cost-Effective Solution: Replaces a matched pair of single-row angular contact bearings, often leading to lower component and assembly costs.
- Enhanced Rigidity: Provides strong, rigid support for shafts, improving the overall accuracy and performance of the machine.
- Versatile Load Handling: Capable of managing radial loads and bidirectional axial loads simultaneously.
- Improved Operational Efficiency: Low friction and high precision contribute to smoother operation and reduced energy consumption.
