quality Precision Ball Bearings & Angular Contact Ball Bearings manufacturer

Challenge A leading Chinese manufacturer of RV reducers, which are critical components in industrial robot joints, was facing inefficiencies in their assembly process. The bearings they were using required extensive post-purchase sorting and matching, which slowed down production and increased labor costs. Our Solution Beining Technology developed a fully customized matched bearing pair specifically for their application. Our engineering team achieved precise control of the inner and outer ring mounting height, with a matching accuracy of ±0.001 mm. This ensured that each pair was perfectly matched and ready to use upon delivery. The Result The new solution eliminated the need for manual sorting and matching. This significantly reduced assembly time, lowered labor costs, and improved overall production efficiency. In addition, the high-precision bearings contributed to better performance and longer service life of the final RV reducer products. Why Choose Beining for Robotic Bearings We are a specialist in super precision bearings for robotics, motors, and spindles. Our strengths include: High precision up to P2 and P4 levels, with low noise, long life, and high-speed capability Custom engineering for unique applications, such as this RV reducer project Advanced automated production with daily capacity of 600,000 pieces, ensuring consistent quality and fast delivery Proven partnerships with leading companies in robotics and automation, including Unitree, Flexiv, Zhongda Decelerator, SIGE Transmission, and WITTENSTEIN We offer a reliable, high-performance alternative to international brands like NSK, NMB, and NTN. If you are looking for precision bearings that improve efficiency and product quality, we would be happy to support you. Contact us for samples, product catalog, or technical consultation. Beining Intelligent Technology (Zhejiang) Co., Ltd. WhatsApp: +86 180 5823 8053 WeChat: +86 130 3462 8052

  Overview This case study highlights how we diagnosed and repaired a ball screw bearing failure in a CNC machine that was causing production downtime, loss of accuracy, and high maintenance costs. By identifying the root causes and implementing targeted solutions, we significantly improved machine performance and reduced annual maintenance expenses by over $35,000. The Problem A customer reported that their CNC machine was making grinding noises and losing cutting accuracy during operation. This led to: Unplanned downtime Lower product quality Increased repair frequency After inspection, we identified the issue as a failed ball screw bearing, a key component for smooth and precise machine movement. Root Cause Analysis We found three main reasons for the bearing failure: 1. Wrong Lubrication The grease used was too thick, which prevented proper lubrication and caused metal-to-metal contact. 2. Poor Installation Measurements showed the bearing was not aligned correctly during installation, leading to uneven wear. 3. Contamination Metal dust from machining operations entered the bearing housing, acting like sandpaper on moving parts. The Solution To fix the problem and prevent future failures, we took the following steps: ✅ Improved Lubrication: Switched to the manufacturer-recommended grease Installed automatic lubricators to ensure consistent lubrication ✅ Precision Reinstallation: Used laser alignment tools to install the bearing correctly Retrained technicians on best practices for installation ✅ Enhanced Contamination Control: Added protective covers to block dust entry Installed magnetic chip collectors to trap metal particles Set up regular cleaning and inspection checkpoints Results After Repair Improvement Area Before Fix After Fix Bearing Lifespan ~400 hours 1,500+ hours Machine Positioning Accuracy ±0.15 mm ±0.03 mm Annual Maintenance Cost $18,500 < $7,000 ✅ Total Annual Savings: Over $35,000 in downtime and replacement part costs ✅ Improved Production Efficiency and product quality restored Key Takeaways For maintenance teams and engineers, this case offers valuable lessons: Always use the correct type of grease recommended by the manufacturer. Invest in precision tools like laser alignment systems for accurate installation. Keep bearings clean — install and regularly inspect sealing components. Pay attention to unusual sounds or vibrations — they are early signs of potential failure. Why This Matters for Your Business Preventive maintenance and correct installation of ball screw bearings can help avoid costly breakdowns and extend equipment life. This real-world example proves how small changes can lead to big savings and long-term reliability. If you're experiencing similar issues with your machinery, we can help. Contact us today to learn more about our precision bearing solutions and maintenance support services.