Our large-size custom double row angular contact ball bearings are engineered for demanding applications that require high load capacity, excellent running accuracy, and long-term reliability. Designed and manufactured to P5 precision grade, these bearings provide stable performance under combined radial and axial loads, even in harsh industrial environments.
Product Overview
The double row angular contact ball bearing features two rows of balls arranged in a back-to-back or face-to-face configuration, allowing it to withstand axial loads in both directions while maintaining high rigidity. For large-size and custom designs, optimized internal geometry and raceway profiles are applied to ensure uniform load distribution and smooth rotation.
Each bearing is manufactured using high-quality bearing steel, with strict control over heat treatment, grinding, and assembly processes. The result is a precision bearing solution that meets the requirements of heavy-duty and high-accuracy equipment.
Key Features
- P5 precision grade for high rotational accuracy and low vibration
- Double row angular contact design for combined radial and axial loads
- Large-size and fully customizable dimensions, structures, and clearances
- High rigidity and stability, suitable for heavy-duty applications
- Optimized internal geometry to reduce friction and extend service life
- Optional cage materials and sealing solutions based on application needs
Technical Advantages
Compared with single row designs, the double row angular contact structure offers higher axial load capacity and better alignment capability. The P5 accuracy level ensures tight tolerances on runout and dimensional accuracy, making these bearings ideal for precision machinery where consistent positioning and smooth operation are critical.
Customized solutions are available, including special contact angles, preload configurations, and surface treatments, allowing the bearing to be precisely matched to the operating conditions.
Typical Application
- Heavy-duty machine tools and machining centers
- Large industrial gearboxes and transmission systems
- Metallurgical and steel processing equipment
- Wind energy and large rotating machinery
- Precision rotary tables and indexing systems
Quality and Manufacturing
Quality control is built into every step of the manufacturing process for large-size custom double row angular contact ball bearings. From raw material selection to final inspection, all procedures are carried out under strict standards to ensure stable performance, long service life, and full compliance with P5 precision class requirements.
This systematic quality and manufacturing approach ensures that every large-size custom double row angular contact ball bearing delivers consistent accuracy, reliability, and durability in demanding industrial applications.
Raw Material Control
High-grade bearing steel from approved suppliers is used exclusively. Each batch is inspected for chemical composition, cleanliness, and metallurgical structure to ensure excellent fatigue strength and dimensional stability. Complete batch traceability is maintained throughout production.
Heat Treatment Process
Heat treatment is a key factor in the performance of large-size precision bearings. Controlled heat treatment processes are applied to achieve uniform hardness and a stable microstructure while minimizing distortion. Hardness and structural consistency are closely monitored to guarantee wear resistance and long-term reliability.
Precision Machining and Grinding
All rings are machined and ground on high-precision equipment. Raceway geometry, roundness, and surface finish are strictly controlled through multiple grinding stages. Accurate contact angles and smooth raceway surfaces are ensured to support consistent load distribution and low friction operation.
Assembly Process
Balls are precisely graded to match the required internal clearance or preload. During assembly, inner and outer rings are carefully paired, and axial alignment is tightly controlled. Assembly is performed in a clean environment to prevent contamination and to maintain the required precision level.
Inspection and Measurement
Each bearing is inspected for critical dimensions, including bore, outer diameter, width, and runout. Geometrical accuracy of raceways and mounting surfaces is verified using calibrated measuring equipment. For large-size bearings, dedicated fixtures are used to ensure reliable measurement results.
Performance Verification
Bearings are tested for rotational smoothness, torque, noise, and vibration. When required, additional tests are carried out to evaluate performance under simulated operating conditions. Only bearings that meet all inspection and test criteria are approved for shipment.
Final Inspection and Packaging
Before delivery, bearings undergo final visual inspection, cleaning, and corrosion protection. Proper packaging is applied to ensure safe transportation. Quality records and inspection documents can be provided upon request.
One-stop Rolling Bearings Factory in China
If your application requires a large-size custom double row angular contact ball bearing with P5 accuracy, this product offers an ideal balance of load capacity, precision, and durability. Our engineering team can support custom designs to meet your specific technical requirements and operating conditions, delivering a reliable bearing solution for demanding industrial use.
Hot Tags: large-size customized double row angular contact ball bearing, China, manufacturers, factory, customized, for sale, 719 Series Angular Contact Ball Bearings, angular contact ball bearing 7040C 7040AC, angular contact ball bearing 7060C 7060AC 7060B, angular contact ball bearing 7068AC 7068B, double row thrust ball bearing 234930, QJ 1056 N2MA C4