China Beining Intelligent Technology (Zhejiang) Co., Ltd Company News

Precision angular contact ball bearings are widely used in high-performance machines such as CNC spindles, robotics, and automation systems. These bearings are designed to carry both radial and axial loads with high accuracy and rigidity. One of the key factors that affect the performance of these bearings is preload — the controlled removal of internal clearance. Proper preload improves stiffness, reduces vibration, and ensures smooth, precise operation. There are two main preload methods: Positioning Preload and Constant Pressure Preload. Each has its own benefits and is best suited for different types of applications. 1. What Is Positioning Preload? Positioning Preload means fixing the axial position of the bearings once they are assembled. The preload stays the same during operation. How It Works: Bearings are matched and assembled with tight tolerances. Spacers or shims are used to control the exact amount of preload. In some cases, a locknut or screw is adjusted while measuring the starting torque. Advantages: High rigidity and precision Simple and cost-effective Stable performance in controlled environments Best For: Machine tool spindles Precision gearboxes Measuring equipment Applications with little or predictable thermal change 2. What Is Constant Pressure Preload? Constant Pressure Preload uses a spring (like a Belleville washer) to apply a steady force on the bearings. This keeps the preload stable, even when the position of the bearing rings changes. How It Works: A spring applies constant pressure to the bearing pair. As the shaft or housing expands or contracts due to heat, the spring adjusts to keep the preload force consistent. Advantages: Maintains preload under changing conditions Reduces risk of overheating or failure Good for high-speed and dynamic applications Best For: High-speed motor spindles Electric motors Aerospace components Semiconductor and optical equipment Which Method Should You Choose? Factor Best Method High precision and rigidity Positioning Preload High-speed or changing temperatures Constant Pressure Preload Simple and cost-effective setup Positioning Preload Long-term reliability under stress Constant Pressure Preload Why Choose Beining Technology? At Beining Technology, we design and manufacture high-quality angular contact ball bearings for a wide range of industrial and high-tech applications. Our engineering team can help you choose the best preload method for your specific needs — whether it's Positioning Preload or Constant Pressure Preload. With Beining bearings, you get: Reliable performance High precision and rigidity Long service life Torque Accuracy, Spindle Stability — Trust Beining Technology for precision angular contact ball bearings built for performance.

Why Do Electric Motor Bearings Leak Electricity? (Causes & Prevention Tips) Have you ever wondered why electric motor bearings fail prematurely despite proper lubrication and regular maintenance? One often overlooked cause is bearing current leakage, also known as electric motor bearing leakage or shaft voltage discharge. When stray electrical current passes through the bearings instead of the intended path, it can cause significant damage — including pitting, fluting, noise, vibration, and even complete motor failure. In this article, we’ll explore: What causes bearing current in electric motors How to identify early signs of damage Practical strategies to prevent future failures Let’s get started. What Is Bearing Current Leakage? Bearing current leakage occurs when unintended electrical current flows through the motor’s bearings rather than staying within the designed electrical circuit. This phenomenon typically happens due to imbalances in the magnetic field or high-frequency voltages generated by variable frequency drives (VFDs). Over time, these currents create microscopic arcing between the bearing components. This leads to surface damage such as pitting and fluting — a repetitive groove-like erosion pattern on the bearing raceway. Eventually, this damage results in increased noise, vibration, and premature bearing failure. Common Causes of Bearing Current Leakage 1. Moisture and Water Intrusion Humid environments or exposure to water can degrade internal insulation and wash away protective lubricants. As a result, electricity may find a new path — often through the bearings. Tip: Use sealed bearings and ensure appropriate motor enclosures for wet or outdoor applications. 2. Oil, Grease, and Dirt Buildup Contamination from oil, dust, or debris on motor windings reduces their insulation performance. This allows stray current to escape and travel through the bearings to ground. Tip: Clean motor internals regularly and use non-conductive, high-quality grease. 3. Damaged Wire Insulation Cracked or aged insulation on power cables — especially near terminal boxes or where wires enter the motor housing — creates a direct path for current leakage. Tip: Conduct regular visual inspections and insulation resistance tests. 4. Overheating and Aging Prolonged operation under high temperatures accelerates the aging of insulation materials. Once insulation breaks down, it no longer contains the electrical current effectively. Tip: Monitor motor temperature and avoid long-term overloading. How to Prevent Bearing Current Leakage Here are some practical steps you can take to extend the life of your electric motors and reduce unplanned downtime: 1. Keep Motors Dry Use proper sealing and ventilation to minimize moisture buildup. Store motors in dry environments and choose appropriate enclosures based on operating conditions. 2. Clean Windings Regularly Remove conductive contaminants from windings and internal components during scheduled maintenance. This helps maintain good insulation properties. 3. Inspect Wiring Routinely Check all wiring connections and insulation for wear or damage. Replace any faulty cables or terminals immediately. 4. Manage Heat and Wear Avoid motor overloading and ensure cooling systems are functioning properly. Older motors or those used in harsh environments are more prone to insulation breakdown. 5. Install Shaft Grounding or Use Insulated Bearings In high-risk applications, install shaft grounding rings or use insulated bearings to redirect stray currents safely to ground, bypassing the bearings entirely. Expert Tip: If you suspect bearing current issues, consult with a qualified motor technician or maintenance specialist for a professional diagnosis. The Cost of Ignoring Bearing Current Allowing bearing current to go unchecked can lead to costly consequences: Increased maintenance and repair costs Unplanned production downtime Safety risks due to unexpected motor failure By understanding the root causes — such as moisture, contamination, insulation failure, and aging — you can take proactive steps to protect your equipment and improve operational efficiency. Final Thoughts Preventing electric motor bearing leakage starts with regular inspection, proper maintenance, and awareness of your electrical system's health. Whether you're managing a single motor or an entire industrial facility, addressing these issues early can significantly reduce repair costs and prolong equipment life. If you’re experiencing frequent bearing failures or suspect electrical leakage, don’t wait — reach out to our team of motor experts today for a professional diagnosis and customized solution. Want More Technical Insights? Subscribe to our newsletter or follow our blog for more in-depth guides on motor maintenance, troubleshooting, and industrial best practices.

Choosing the Right Bearings for Your Electric Motors Motor bearings may be small, but they play a big role in keeping industrial motors running smoothly. One of the most important factors in bearing performance is how well it handles heat. Exceeding temperature limits can lead to early failure, costly downtime, and reduced motor efficiency. In this article, we’ll walk through the key points engineers and maintenance teams should know when selecting bearings for electric motors. 1. Heat Stabilization Treatment Temperature (HSTT) Bearing steel isn’t just strong — it’s specially treated to hold its shape and strength under heat. This treatment sets a limit known as the Heat Stabilization Treatment Temperature (HSTT). If the bearing runs hotter than its HSTT, it can lose hardness and change shape slightly. These changes can cause vibration, noise, and shorten the life of the bearing. Different types of bearings (like deep groove, angular contact, or cylindrical roller) and different brands have different HSTT ratings. Always check the manufacturer's datasheet for exact values. 2. Standard vs. High-Temperature Bearings Most standard motor bearings are built for normal conditions: Usual range: -30°C to +120°C (-22°F to +250°F) But some applications — like high-speed spindles, furnace fans, or motors in hot environments — need more protection. For these, choose high-temperature (HT) bearings, which are made to handle temps above 120°C (250°F), sometimes up to 200°C (392°F) or higher. 3. Don’t Overlook Cages & Seals Even if the steel can take the heat, the cage and seal materials might not. Common Cage Materials: Steel / Stainless Steel: Good for high temperatures (up to 150°C+) Brass: Similar high-temp performance Polyamide (PA66): Cost-effective but only good up to around 120°C — avoid it in hot-running motors Seal Options: NBR (Nitrile Rubber): Standard choice, works well from -30°C to +120°C FKM (Viton® type): Better for high temps, from -20°C to +200°C PTFE and other polymers: For extreme conditions with high heat or chemicals 4. Grease Matters More Than You Think Grease keeps the bearing running smoothly, but it reacts strongly to temperature. Too hot: Grease gets runny, leaks out faster, and loses protection Too cold: Grease thickens, making startup harder and reducing lubrication When choosing grease: Check viscosity at your operating temp Make sure the dropping point is well above your max temp Pick one with good oxidation resistance Plan for re-lubrication intervals, especially in hot environments 5. How to Choose the Right Bearing To avoid failures, follow these steps: ✅ Measure actual bearing temperature, not just ambient or motor surface ✅ Pick a bearing with HSTT higher than your max operating temp ✅ Check cage and seal materials match your thermal needs ✅ Use the right grease for your temp range ✅ Use cooling methods if needed — like airflow or cooling jackets Why It All Matters Getting bearing temperature limits wrong can lead to: Early bearing failure Increased maintenance costs Vibration and noise Safety risks Lower energy efficiency Choosing the right motor bearing is about more than size and load rating. Temperature tolerance is a core design factor that affects reliability, uptime, and long-term performance. If you're building or maintaining motors where precision and stability are critical — like in automation, robotics, or high-speed machining — make sure your bearings are up to the thermal challenge. Torque Accuracy. Spindle Stability. Beining Technology. High-performance motor bearings designed for reliable operation across a wide temperature range.

  Motor bearings are the unsung heroes of electromechanical systems. One critical, often overlooked parameter determining their performance and lifespan is bearing clearance: the measured movement of an unclamped inner or outer ring radially or axially when the other ring is fixed. Understanding Clearance: Radial vs. Axial Radial Clearance: Movement perpendicular to the shaft axis. Axial Clearance: Movement parallel to the shaft axis (typically smaller than radial). This measured gap exists before installation under zero load and represents the average movement, accounting for manufacturing tolerances in rings and rolling elements. Why Bearing Clearance Matters: Performance & Lifespan Impact Choosing the correct clearance isn't optional – it's fundamental to motor health: Too Little Clearance (Excessively Tight): Creates excessive friction and heat build-up during operation. Worst case? Catastrophic failure through bearing seizure ("high-temperature lock-up"), destroying the bearing and potentially damaging the motor. Too Much Clearance (Excessively Loose): Allows excessive internal movement of rolling elements, leading to vibration, noise, uneven load distribution, accelerated wear, and ultimately, premature bearing and motor failure. The Clearance Balancing Act: Key to Optimal Performance Precise clearance control during motor design and manufacturing is non-negotiable. It directly dictates: Operational Stability: Minimizes vibration for smooth rotation. Temperature Management: Prevents dangerous overheating. Load Distribution: Ensures even stress on rolling elements. Longevity: Extends bearing and overall motor service life significantly. The Bottom Line for Engineers & Buyers Selecting motor bearings with the optimal internal clearance (often designated as C3 for electric motors where thermal expansion needs accommodation) is crucial. It's the cornerstone for achieving reliable operation, minimizing downtime, and maximizing the return on investment in any motor-driven system. Torque Accuracy, Spindle Stability – Starts with the Bearing. Choose Precision. Beining Technology – Expertise in Critical Motor Bearing Solutions

Keep your machinery running smoothly and avoid costly downtime by taking proper care of your precision bearings. Follow these easy maintenance steps from the bearing experts at Beining Technology. Step 1: Remove Wheels & Screws Safely Before working on bearings: Use a magnetic tray to keep screws secure and organized Take photos or notes showing how parts fit together for easier reassembly later Step 2: Remove Bearings Carefully Always use the correct size hex wrench Never hit or hammer directly on the bearing For tight fits, apply even pressure with proper tools to avoid damage Step 3: Clean Bearings Properly Use soft brushes or lint-free cloths to wipe away dirt and debris Avoid using harsh chemicals unless necessary Work in a clean area — dust and particles can shorten bearing life Step 4: Check the Cover Type First Some bearings have removable covers, others don’t: ✅ C-ring groove: Removable cover – safe to open ❌ Solid metal edge: Permanent seal – do not open unless necessary Step 5: Open C-Ring Covers (If Safe) If your bearing has a removable cover: Slide a thin screwdriver into the groove Gently lift out the C-ring Keep all small parts in a safe place for reassembly Step 6: Warning About Permanent Covers ⚠️ Only open sealed bearings in emergencies: Opening will break the cover Bearing performance drops by up to 60% Plan to replace the bearing soon after opening Step 7: Clean & Lubricate Correctly Soak bearings in cleaning solvent (if needed) Swirl gently to remove built-up grime Pack with high-quality grease made for precision bearings Spin by hand to evenly spread the lubricant How Often Should You Service Bearings? Equipment Recommended Service Interval CNC Machines Every 400 operating hours Medical Devices Every 3 months Factory Robots After 5 million movements Why Choose Precision Bearings? Using high-quality precision bearings gives you: Up to 10x longer accuracy retention Reduced machine vibration Energy savings through smoother rotation 3 Warning Signs of Failing Bearings Don’t ignore these red flags: Screeching, grinding, or unusual noises Overheating housing (above 65°C / 150°F) Visible rust, dents, or rough movement Pro Tip: For the longest service life and consistent performance, choose "Torque Stable" precision bearings designed for industrial and high-precision applications. Looking for Expert Bearing Support? At Beining Technology, we help manufacturers keep their machines running with high-quality bearings and expert advice. Contact us today for bearing selection, replacement, or maintenance support.  

A technical guide from Beining Technology Angular contact ball bearings are like the "joints" of many precision machines — such as robots, machine tools, and aerospace equipment. And the seal is one of the most important parts that keep them running smoothly. What Does a Bearing Seal Do? Think of the seal as the bearing’s “protective suit.” It has three main jobs: Keep grease inside – So the bearing stays well-lubricated Keep dirt out – Dust, moisture, and particles can’t get in Maintain pressure – Keeps the internal tension just right for smooth operation If the seal fails, big problems can happen: Bearing life may drop by more than 50% Maintenance costs can double Unexpected downtime often lasts over 4 hours per incident Why Do Seals Fail? 1. Low-quality materials or poor production Some seals are made with bad materials or wrong manufacturing steps. They may become stiff, crack, or wear out fast. ✅ How Beining solves this: We use high-quality rubber and strict testing to make sure every seal lasts long and performs well. 2. Poor design Some seals are simply not built for the job. For example: Too tight → causes overheating Too loose → lets in dust and oil leaks Wrong material for high heat or chemicals ✅ How Beining solves this: We use simulation tools to design better seals that match real-world conditions. 3. Improper installation or harsh environments Many seal failures come from mistakes during installation or using bearings in extreme conditions. ✅ How Beining helps: We offer support before and after purchase: Mounting advice and virtual simulations Environmental checks and recommendations Custom designs for special needs ✅ Engineering Support You Can Trust We don’t just sell bearings — we help you use them better: Free consultation before installation On-site or remote environmental analysis Custom solutions for unique applications   Want Better Bearing Performance? Email us: sherrydong1981@gmail.com WhatsApp: +86 180 5823 8053 Learn more: www.precisionball-bearing.com

By Beining Technology – Experts in Precision Spindle Bearings Is your CNC machine vibrating, overheating, or losing cutting accuracy? The issue may be with the angular contact ball bearings inside the spindle. These components are essential for maintaining high precision and smooth operation. At Beining Technology, we specialize in high-performance spindle bearings. Our motto:Precision Torque, Stable Spindle — a promise to deliver quality and reliability. In this guide, you’ll learn how to identify and fix common bearing problems — and how to prevent them from happening again. Common Causes of CNC Spindle Bearing Failures 1. Improper Bearing Fit Even small mismatches between the shaft, housing, and bearing can cause early failure. Solution: Check all dimensions carefully against manufacturer specifications. A proper fit ensures even load distribution and longer bearing life. 2. Incorrect Installation Methods Using the wrong tools or improper installation techniques can damage bearings before they’re even used. Solution: Use the correct mounting tools and follow the recommended procedures. Avoid applying force directly on the bearing race. Control temperature during thermal fitting. 3. Lubrication Issues Too little grease, the wrong type, or contamination from coolant or dust can increase heat and wear. Solution: Only use the recommended lubricant. Keep seals clean and inspect lubrication levels regularly. 4. Unusual Noise or Vibration Grinding sounds, excessive vibration, or unexpected heat are signs of possible bearing issues. Solution: Monitor spindle operation closely. Detecting these symptoms early can help avoid costly downtime. Preventative Maintenance Tips Material Compatibility: Make sure the shaft and housing materials are compatible with the bearing to avoid misalignment or stress. Replace Worn Seals: Damaged seals allow dust and coolant into the system. Replace them regularly to protect your bearings. Schedule Regular Inspections: Include spindle bearing checks in your maintenance routine to catch problems early. Why High-Precision Bearings Matter High-quality angular contact ball bearings provide: Minimal vibration Accurate torque transmission  Stable spindle operation   With proper installation and care, they help keep your CNC machine performing at its best — reducing unplanned downtime and improving productivity. Partner with Beining Technology for Reliable Spindle Bearings When it comes to spindle bearings, precision matters. Whether you're troubleshooting an existing system or upgrading for better efficiency, our team is here to support you. http://www.precisionball-bearing.com

Angular contact ball bearings play a key role in the smooth operation of gear reducers. But when they start making noise, it can be a sign of underlying problems. Understanding the causes of bearing noise helps you prevent breakdowns, improve performance, and extend equipment life. Here are the most common reasons — and how to solve them. Common Causes of Bearing Noise 1. Too High Speed (RPM) Running the gear reducer at excessive speeds increases internal friction and vibration, which can lead to abnormal noise. 2. Lubrication Problems Not enough grease or oil Using the wrong type of lubricant These issues cause metal-to-metal contact, increasing friction and wear — and often resulting in noise. 3. Incorrect Installation If bearings are not mounted properly — such as misalignment or incorrect internal clearance — it can create unstable rotation and unusual sounds. 4. Overloading the Bearing When the load exceeds what the bearing is rated for, it causes extra stress, heat, and vibration, all of which can result in noise. 5. Low-Quality Bearings Bearings with rough surfaces on the balls or raceways, or those with inconsistent internal tolerances, may produce noise even under normal conditions. How to Reduce Noise and Improve Bearing Performance ✅ Use the Right Lubrication Apply the correct type and amount of grease or oil. Follow manufacturer recommendations for lubrication intervals. ✅ Install Bearings Correctly Always follow proper installation methods. Check alignment and internal clearance during setup. ✅ Control Operating Speed Avoid running the gear reducer beyond its recommended RPM range. ✅ Monitor Load Levels Ensure loads stay within the bearing’s capacity. Regularly inspect operating conditions to avoid overloading. ✅ Choose High-Quality Bearings Invest in precision-engineered angular contact ball bearings from trusted manufacturers. Quality bearings reduce noise, last longer, and perform better under pressure. Final Thoughts Noise from angular contact ball bearings doesn’t always mean failure — but it’s a warning sign that shouldn’t be ignored. Most bearing noise is preventable by addressing: Lubrication Installation Load Speed and using high-quality components. By taking care of these factors, you’ll keep your gear reducers running quieter, smoother, and more efficiently. Looking for Quiet, Durable Bearings? At Beining Technology, we design high-precision angular contact ball bearings specifically for demanding gear reducer applications. Built for reliability, performance, and long service life.  

  As a professional bearing manufacturer, we're always looking for ways to improve the durability and performance of our products. One method we've integrated into our production process is cryogenic treatment of bearings — a low-temperature enhancement that boosts material properties without changing the core manufacturing flow. This controlled cold treatment helps our bearings perform better in high-speed, high-load, and extreme environments. 1. Stronger Bearings, Longer Life We apply deep cold treatment of bearings at temperatures as low as -196°C, using liquid nitrogen in a precise cycle to create lasting improvements: Up to 3x longer lifespan by transforming residual austenite into hardened martensite 40% better dimensional stability – maintains precision within 0.002mm even under thermal changes Increases hardness by 3–5 HRC thanks to finer carbide dispersion This is not just a surface-level improvement — it’s a structural upgrade that supports long-term reliability. 2. Real-World Results from Our Bearings Engineers trust our cryogenically treated bearings in some of the most demanding applications: Medical: CT scanner bearings maintain rotation accuracy within ±0.3 microns/hour after 50,000+ cycles Aerospace: Satellite gyro bearings operate reliably at -150°C with 35% less friction Machining: CNC spindle bearings reach 200,000 RPM with vibration under 0.8 microns These results show how bearing lifespan improvement can be achieved through smart material engineering — not just design. 3. Designed for High-Demand Applications Our bearings are built for environments where every micron matters: High-speed spindles over 250,000 RPM Semiconductor wafer handling systems Electric vehicle motor drives Cryogenic pumps and aerospace mechanisms Want Higher-Performance Bearings? At Beining Technology, we combine advanced materials, precision manufacturing, and optional low temperature treatment for industrial bearings to deliver components that last longer and perform better. Whether you're using bearings in CNC machines, aerospace systems, or medical equipment, we can help you find the right solution.

  Premature spindle bearing failure is more than just a maintenance issue — it’s a costly problem that leads to downtime, poor part quality, and lost profits. To protect your investment, it’s important to understand what causes bearings to wear out early and how to avoid it. Common Causes of Early Spindle Bearing Failures (And How to Fix Them) 1. Improper Installation or Misalignment Too tight fit: Pressing a bearing onto a shaft with too much force can reduce internal clearance, causing heat build-up and faster wear. Shaft or housing misalignment: Even small alignment errors create uneven pressure on the bearing, leading to early fatigue and damage. ✅ Solution: Always follow correct fitting procedures and use proper tools during installation. 2. Lubrication Problems and Contamination Wrong lubricant type or viscosity: Using the wrong grease or oil can cut bearing life by up to 80%, especially at high speeds. Dust, metal chips, or coolant inside the bearing: These particles act like sandpaper, wearing down surfaces and causing cracks. Moisture or water ingress: Leads to rust and washes away the protective oil film. ✅ Solution: Use the right lubricant for your application. Replace grease regularly. Keep contaminants out with strong seals like TefSeal™, and check seal condition every few months. 3. Over-Preloading and Heat Build-Up Too much preload: While some preload improves stiffness, too much creates high internal stress and heat, which breaks down the lubricant and shortens bearing life. Overheating: Poor cooling allows heat from friction to build up, softening steel and accelerating material breakdown. ✅ Solution: Use precision tools to set the correct preload. Monitor spindle temperature closely — even a 15°C increase can cut bearing life in half. 4. Vibration and Impact Damage Machine vibration: Unbalanced tools or unstable cutting conditions send shockwaves through the bearing, causing surface pitting and micro-wear. Rough handling during installation: Striking the bearing directly with a hammer leaves invisible dents on raceways, which later cause spalling and failure. ✅ Solution: Use balanced tools (ISO 1940 G1.0 or better). Handle bearings carefully and always use proper mounting tools. Why Choose Beining Technology? At Beining, we design our spindle bearings with real-world challenges in mind: Ultra-precise tolerances: Better fits mean less stress and longer life. High-quality materials: Special steels and advanced heat treatments resist wear and heat. Smart design: Optimized geometry reduces internal stress and increases durability. Strong sealing systems: Our  technology blocks contamination 2x better than standard options. Expert support: From selection to setup and maintenance, our team helps you get the most from your bearings.