NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
1. Project Background
As industries such as CNC machine tools, high-speed electric spindles, aerospace, and precision instruments increasingly demand higher performance from core transmission components, imported precision bearings have long dominated China's high-end market, presenting challenges such as high costs and prolonged delivery cycles. Luoyang Newbee Transmission Technology Co., Ltd., a leader in China's high-end transmission component sector, identified the urgent need for domestic substitution of high-precision angular contact bearings for electric spindles. In 2021, the company launched an independent R&D initiative for the 71821CP2 bearing, aiming to break foreign technological monopolies.
2. Technical Challenges
The 71821CP2 bearing, as a critical component for high-speed electric spindles, must meet stringent requirements under extreme operating conditions:
<!--[if !supportLists]-->1. <!--[endif]-->Ultra-High Speed: Capable of withstanding speeds exceeding 30,000 RPM;
<!--[if !supportLists]-->2. <!--[endif]-->Exceptional Precision: Dynamic runout values below 2μm, achieving ISO P2-grade accuracy;
<!--[if !supportLists]-->3. <!--[endif]-->Longevity & Reliability: Operational lifespan exceeding 20,000 hours under high-temperature and high-load conditions;
<!--[if !supportLists]-->4. <!--[endif]-->Vibration & Noise Control: Compliance with Z4-grade ultra-low noise standards for precision machining applications.
3. Innovative R&D Approach
The company assembled an interdisciplinary R&D team and collaborated with universities and research institutes to overcome key technical barriers:
1. Material Innovation: Adopted new carburizing steel optimized through vacuum heat treatment to refine grain structure and enhance fatigue resistance;
2. Structural Optimization: Implemented asymmetric raceway design combined with finite element analysis (FEA) to optimize contact angle (25°) and preload distribution, improving dynamic stiffness;
3. Lubrication Breakthrough: Developed nano-composite coated cages integrated with oil-air lubrication systems to reduce frictional heat generation at high speeds;
4. Precision Manufacturing: Utilized high-precision CNC grinding machines with real-time inspection systems to ensure raceway roundness errors ≤0.3μm;
5. Testing & Validation: Established a high-speed bearing test rig, completing 1,200-hour accelerated lifespan testing and vibration spectrum analysis aligned with international standards.
4. Key Achievements
Performance Metrics:
Maximum speed: 35,000 RPM (grease lubrication) / 45,000 RPM (oil-air lubrication);
Dynamic stiffness increased by 40%, noise levels ≤28dB(A);
Certified by the National Bearing Quality Supervision and Inspection Center, achieving ISO P2-grade precision.
Market Impact:
1. Successfully integrated into domestic high-end CNC machine tool brands, replacing imported counterparts from SKF and NSK;
2. 35% cost reduction and 60% shorter lead times compared to imported products;
3. Achieved mass production in 2023, with annual orders surpassing 500,000 units, driving a CNY 120 million increase in corporate revenue.
5. Industry Significance
The successful development of the 71821CP2 bearing marks a milestone in China's high-end precision bearing industry:
Selected as a demonstration project for MIIT's "Industrial Foundation Reinforcement Initiative";
Granted 6 invention patents and established 2 enterprise standards;
Reduced procurement costs for downstream industries by 20%, enhancing the competitiveness of China's high-end equipment manufacturing sector.
6. Future Vision
Building on the 71821CP2 as a technological benchmark, Luoyang Newbee Transmission will advance R&D in next-generation hybrid ceramic bearings and smart sensor-integrated bearings, striving to become a global leader in precision transmission solutions and empower "Made in China" with core technological excellence.
Case Highlights
1. Quantified Technical Specifications: Demonstrated technical depth through measurable metrics;
2. Domestic Substitution Narrative: Emphasized societal value in addressing "bottleneck" technologies;
3. Industry-Academia Collaboration: Highlighted integrated innovation capabilities;
4. Market-Driven Results: Validated commercial success with order volume and revenue data.
