Connecting Rod Main Bearing

A reliable partner from the hometown of bearings in China - as a core enterprise in Shandong's bearing industry, Juyuan Bearing has been deeply involved in the high-end industrial bearing field for 15 years, focusing on providing high-performance connecting rod spindle bearing solutions for global mechanical manufacturing customers. Relying on the industrial cluster advantages of "China's Bearing Hometown", we integrate high-quality raw material supply chain and precision manufacturing resources, and create core components that can withstand the test of global harsh working conditions with strict process standards. ​

1. Dual guarantee of materials and processes

Using international standard high carbon chromium bearing steel (GCr15), after 12 heat treatment processes (quenching+three tempering), the hardness is ensured to be ≥ 62HRC, and the compressive strength is increased by 20%. The precision forged raceway is processed by a CNC grinder (precision IT5 level), with a roundness error of ≤ 2 μ m, effectively reducing the spindle vibration amplitude by 30% and eliminating the risk of fatigue failure from the source. All products have passed the full testing of ISO 681 roller bearings, and the key performance parameters are superior to the GB/T 18254-2018 standard. ​

2. Whole process quality control

Establish a fully closed-loop quality control system from raw material spectral analysis to dynamic loading testing of finished products:

Raw materials: 100% ultrasonic testing, rejecting impurities exceeding the standard

Processing process: Three coordinate measurement (accuracy ± 0.001mm) is performed on every 50 samples

Factory test: Simulate 1.5 times the rated load for 200 hours, and the temperature rise must be ≤ 15 ° C before it is allowed to leave the factory

The first-time acceptance rate of the product is 99.8%, far higher than the industry average of 95%. ​

3. Global worry free after-sales network

Response speed: 7 * 24-hour after-sales hotline, providing solutions within 4 hours after receiving feedback

Service scope: Provide value-added services such as bearing failure analysis (including spectral testing, metallographic structure analysis), installation guidance, and life prediction

Spare parts guarantee: Set up 3 bonded warehouses in North America, Europe, and Southeast Asia, with regular models available within 72 hours and customized parts delivered quickly within 2 weeks

Quality commitment: We provide a 2-year warranty for non-human damage and lifetime maintenance services at cost price

• Origin Advantage: As the birthplace of China's bearing industry, Shandong has a complete supporting system for heat treatment, surface treatment, and precision machining, leading in both cost control and quality stability
• Technical Accumulation: Developed 2000+non-standard bearings for over 500 customers worldwide, specializing in solving complex working conditions such as high-speed (15000RPM+) and heavy loads (axial/radial load ratio 4:1)
• Complete Certification: Passed IATF 16949 automotive industry certification, ISO 14001 environmental management system certification, products comply with RoHS and REACH environmental standards
• Customization Capability: Provides multi-dimensional customization of bearing clearance, sealing form, surface coating (such as DLC diamond coating), etc., supports quick sampling based on drawings and samples

Juyuan Connecting Rod Spindle Bearing - With the industrial heritage of "China's Bearing Hometown" as its endorsement, we have become your trusted long-term partner with international first-class manufacturing standards and response speed. Whether you need standard products or special working condition solutions, our engineering team is always ready to provide professional support for you. ​

• Technical Validation: All parameters are verified through in-house CNAS-certified testing (fatigue, metallographic, and dimensional analysis).
• Custom Solutions: Available for special requirements (e.g., DLC coatings, cryogenic applications, non-standard load ratios up to 4:1).
• Industry Compliance: Designed for heavy-duty machinery, automotive engines, and industrial spindles, meeting ISO, IATF, and regional safety standards.