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

Spindles are critical components in many machines, and when they start making noise, it can be concerning. However, not all noise comes from worn bearings — there are several possible causes. Understanding what's really behind the sound helps you make better decisions and avoid unnecessary repairs or replacements. Common Causes of Spindle Noise 1. “I’m Just Thirsty!” – Lubrication Problems Lack of lubrication or old/degraded grease/oil is the most common cause of noise. Bearings need clean, correct lubricant to run smoothly. Low or dirty lubricant → increased friction and heat → rough or dry sounds Wrong type of grease for your spindle speed/temperature can also cause issues 2. “I’m Stressed!” – Installation or Alignment Issues Improper installation or misalignment puts stress on bearings: Uneven fit or damage during installation Shaft misaligned by more than 0.02 mm This leads to uneven wear, vibration, and abnormal noise. 3. “Something Else is Loose!” – Mechanical Looseness Loose parts like pulleys, couplings, or mounting bolts can rattle or vibrate. Sometimes internal motor components may also shift slightly and create noise that sounds like bearing failure. 4. “My Power’s Wonky!” – Electrical Problems Electrical issues can cause unusual sounds that have nothing to do with bearings: Unstable voltage Faulty windings Incorrect VFD (Variable Frequency Drive) settings These often cause a high-pitched hum or whine. 5. “I’m Overheating!” – Cooling Problems Poor cooling leads to overheating, which causes bearings to expand and rub harder: Blocked airflow Failed coolant pump Clogged cooling passages Even the fan itself can become noisy if clogged or damaged. 6. “Okay, Maybe It Is Me…” – Bearing Wear or Failure Sometimes, it really is the bearings: Bearings near or past their life span (~2000 hours for high-speed spindles) Physical damage from shock or contamination Signs: loud grinding, pitting, discoloration, strong vibration, or heat What to Do When You Hear Noise Don’t rush to replace bearings — first, check these:  Listen & Feel What kind of noise? (Whine, grind, rumble?) Is there vibration when touching the housing? Is the spindle unusually hot? Check the Basics Lubrication: Is it clean and at the right level? Try re-lubricating with the correct type. Cooling: Make sure air or coolant flow is unblocked. Tightness: Check for loose bolts, pulleys, or couplings. Electrical System: Confirm stable power supply and correct VFD settings. Evaluate Usage How many hours has the spindle been used? Near 2000? Bearings may be due. Has it been overloaded or hit hard? Could resonance at certain speeds be causing the noise? Try adjusting RPM slightly. When to Replace Bearings Replace bearings if you notice: Severe or increasing vibration Localized heat rise over 40°C Visible damage (cracks, pitting, discoloration) Reaching service life with ongoing noise Loud metallic grinding or scraping sounds Why Quality Bearings Matter Using high-quality bearings like those from Beining Technology makes a real difference: Precision manufacturing reduces vibration Optimal design for high-speed applications Superior materials and lubricants reduce friction and noise Rigorous testing ensures long life and quiet operation Custom solutions matched to your specific use case prevent misapplication Final Thoughts Noise doesn't always mean bad bearings. Often, the problem is something simple like lack of lubrication, loose parts, or electrical issues. Diagnosing the real cause saves time, money, and downtime. But when it’s time to replace bearings, choosing precision-engineered options from trusted suppliers like Beining Technology ensures smooth, quiet, and long-lasting spindle performance. Need Help? If you're unsure what’s causing the noise or need help selecting the right bearings for your spindle, contact Beining Technology today. We’re here to help you keep your machines running quietly and efficiently.

Oil leakage from small electric motor bearings is a common issue that can lead to equipment downtime and reduced performance. While leaks are frequent, they usually result from identifiable causes — and with the right approach, they can be effectively managed or even prevented. By understanding the root causes and applying practical solutions, maintenance teams can significantly improve motor reliability and extend service life. Common Causes of Bearing Oil Leaks 1. Seal Failure Seals are the first line of defense against oil leakage. Issues include: Worn or damaged seals due to heat, age, or friction. Improper installation, such as misalignment or insufficient compression. Material incompatibility with temperature, speed, or lubricant type. Gaps between shaft and housing caused by wear. 2. Lubrication Problems Lubricant-related issues are a major cause of leaks: Overfilling increases pressure and forces oil past seals. Wrong lubricant for the environment or application leads to breakdown. Degraded oil/grease loses its properties and may foam. Poor oil circulation due to incorrect pressure, clogged filters, or improperly sloped return lines. 3. Mechanical Wear and Misalignment Physical wear and improper alignment can also cause leaks: Worn bearings or shafts allow unwanted movement that damages seals. Misaligned shafts cause uneven seal wear and early failure. 4. Environmental and Pressure Factors External conditions contribute to oil leakage: Pressure imbalance from blocked or poorly placed vents pushes oil out. Dust, moisture, or corrosive environments damage seals and degrade lubricants.  Practical Solutions to Prevent Oil Leaks 1. Seal Improvements Use high-quality seals like Fluorocarbon Rubber (FKM) for better durability. Install seals correctly using proper tools and techniques. Ensure smooth shaft surface (Ra ≤ 1.6 µm) and avoid twisting during installation. 2. Proper Lubrication Management Fill grease to about 50–60% of the bearing space. For oil systems, keep levels between 1/3 and 1/2 of the sight glass. Choose the right lubricant based on operating conditions (temperature, speed). Maintain oil systems: clean filters, control pressure (0.1–0.8 MPa), and ensure proper return line slope (≥15°). 3. Address Mechanical Issues Align shafts precisely (within 0.02 mm tolerance). Replace worn bearings or shafts promptly to avoid further damage. 4. Control Environment and Pressure Keep vents clean and install filters where dust is an issue. Place motors in dry, clean areas when possible. Clean motors regularly to prevent dirt buildup. 6. Proactive Maintenance Helps Prevent Future Leaks Schedule regular inspections of seals, lubricant levels, and motor condition. Monitor bearing temperature and vibration to catch problems early. Use quality parts from trusted suppliers to avoid repeated failures. Follow manufacturer guidelines for installation and maintenance. Keep detailed records of all service work for future reference. When to Act Immediately If you notice any of these signs, shut down the motor right away: Strange noises (grinding, screeching) Sudden temperature increase These could signal imminent bearing failure, which may cause serious damage if ignored.  Conclusion Oil leakage in small electric motor bearings is not inevitable. With proper sealing, correct lubrication, precision alignment, and routine maintenance, most leaks can be avoided. By taking a proactive approach, companies can reduce downtime, improve efficiency, and get more value from their motor systems. If you have questions,or need more information,please contact with our team,Beining Technology.

  Industrial robot bearings are the hidden heroes that keep your automation precise and reliable. Like any critical component, they need proper care to prevent wear and corrosion – the biggest enemies of performance and lifespan. Here’s how to protect them: ​Your 3-Step Bearing Care Routine:​​ ​Deep Clean:​​ Gently clean bearings in a solvent (like kerosene or specialized degreasers) to remove old grease, dirt, and metal particles. Use fine sandpaper to carefully remove any rust until the surface is smooth. Rinse thoroughly. ​Fight Rust:​​ Dry bearings completely with a clean cloth. Soak them in high-quality rust-preventive oil, rotating them constantly to ensure every surface is coated for maximum protection. ​Lubricate Right:​​ Apply the manufacturer-recommended grease or oil evenly over all parts (inner/outer rings, balls/rollers, cage). Rotate the bearing while applying to ensure the lubricant penetrates deep inside for smooth operation. ​Why Bearings Corrode (and How to Stop It):​​ Bearings rust when metal meets moisture, chemicals, or contaminants. Common causes include: ​Humid/Damp Air:​​ Moisture forms a film on metal, causing rust. Common in food processing, washdown areas, or outdoor robots. ​Chemicals & Liquids:​​ Exposure to acids, alkalis (like cleaning agents, weld fumes, or coolants) eats away at metal. ​Sweat & Touch:​​ Skin oils and sweat are slightly acidic and can cause rust. Always handle bearings with clean gloves! ​Dust & Grime:​​ Abrasive particles scratch surfaces and trap moisture, accelerating corrosion. ​Wrong Lubricant:​​ Using grease that can't handle water, heat, or chemicals leaves bearings unprotected. ​Poor Seals/Design:​​ Damaged seals or designs that trap water/dirt let corrosion in. ​Prevent Corrosion & Extend Bearing Life:​​ ​Choose Wisely:​​ In harsh environments (wet, chemical, salty), use stainless steel bearings or bearings with special coatings. ​Seal Tight:​​ Ensure high-quality, compatible seals (like double-lip rubber or metal) are intact to keep moisture and dirt out. ​Lubricate Smart:​​ Use the right grease for your environment (e.g., waterproof, chemical-resistant, high-temperature grease). Don't over or under-lubricate. ​Keep it Clean:​​ Regularly wipe down robots and maintain a clean workspace to minimize dust and debris. ​Handle with Care:​​ Always wear gloves when touching bearings. Use proper tools during installation to avoid damage. ​Check Often:​​ Listen for unusual noises, feel for excess vibration, and monitor bearing temperature during routine checks. Replace worn seals or bearings promptly. ​Follow the Schedule:​​ Stick to a maintenance plan tailored to your robot's workload and environment (more frequent checks in tough conditions). ​The Payoff: Reliability & Savings​ Simple, consistent bearing care prevents costly downtime, maintains robot accuracy, and significantly extends the life of your valuable automation equipment. Protect your investment! ​Need help choosing the right bearings or lubricants for your robots? Contact our experts Beining Technology today!​  

  Industrial robot bearings are the unsung heroes inside your machines. Just like human joints, they need regular care to ensure smooth movement, precision, and long service life. To keep your robots performing at their best, follow this simple 3-step maintenance routine: The Essential Three-Step Bearing Care Routine 1. Deep Cleaning is Key Use a cleaning solvent such as a specialized degreaser or kerosene (avoid harsh chemicals). Remove all old grease, dirt, and metal particles. If there’s rust, gently sand it off with fine-grit sandpaper until the surface is smooth. Rinse thoroughly after cleaning. 2. Fight Rust Effectively Dry the cleaned bearings completely using a clean, lint-free cloth. Soak them in high-quality rust-preventive oil. Rotate the bearing while submerged to ensure full coverage — this creates a protective film that prevents corrosion. 3. Proper Lubrication is Vital Apply the correct lubricant (grease or oil) as specified by your robot manufacturer. Spread it evenly over the entire bearing — including inner and outer rings, balls/rollers, and the cage. Rotate the bearing while applying to help the lubricant reach all internal parts and reduce friction. Beyond the Basics: Supporting Best Practices For optimal performance, go beyond basic maintenance with these additional steps: Follow the Rules Train operators to use and maintain the robot correctly. Proper operation reduces stress on bearings. Keep it Clean Maintain a clean workspace. Dust and debris can enter bearings and cause damage over time. Check Regularly Listen for unusual noises, feel for vibrations, and monitor temperature changes — these are early signs of bearing issues. Replace Wisely Don’t wait for failure. Replace worn bearings and related parts (like seals or gears) proactively. Always use genuine replacement parts. Stick to the Schedule Create and follow a maintenance plan based on usage and environment (e.g., more frequent lubrication in dusty or hot conditions). Why This Matters Good bearing maintenance isn’t just routine work — it’s an investment in your robot’s performance and longevity. Benefits include: Maintained precision and accuracy Extended service life of components Reduced downtime and production loss Consistent smooth and efficient operation Start Today! Implement this simple bearing care routine to protect your automation systems and keep your robots running at their best. For specific lubricant recommendations or bearing specifications for your robot model, refer to your user manual or contact our team,Beining Technology.

  Industrial robots need to be accurate, strong, and long-lasting. Choosing the right bearings helps them perform better in areas like: CNC machines Assembly lines Medical robotics Automation systems Let’s break down how to pick the best bearings for different parts of a robot. 1. Pick the Right Bearing for Each Robot Joint  Waist/Base (Axis 1) This part supports the whole robot and handles side forces. Best choices: Cross Roller Bearings (CRB) YRT Rotary Table Bearings Why? They are compact and can handle side force, pressure, and twisting all at once. Used in: ABB IRB 6700  Shoulder/Elbow (Axes 2 & 3) These joints move heavy loads and bend under stress. Best choices: Harmonic Drive Bearings (thin CRB or angular contact) Tapered Roller Bearings (for very heavy loads) Why? They help carry heavy weight and resist bending. Used in: KUKA KR QUANTEC  Wrist Joints (Axes 4, 5, 6) These need to move fast and precisely. Best choices: Matched Angular Contact Ball Bearings (DF/DB pairs) Thin-Section Ball Bearings (for lighter robots like cobots) Why? They offer high speed and accuracy in small spaces. Used in: Yaskawa Motoman, UR10e  Linear Motion (e.g., SCARA Z-axis) Some robots move straight up and down. Best choices: Ball or Roller Linear Guides (for high precision, e.g., THK SR series) Linear Bushings (for simpler, lower-cost designs) Why? They allow smooth and accurate linear movement. 2. What Else to Consider When Choosing Bearings? Factor What to Look For Load Type Use roller bearings for heavy loads, ball bearings for lighter ones Precision High-tech applications (like medical or semiconductors) need P4/P2 grade bearings Speed Angular contact ball bearings with ceramic balls work best for fast motion Stiffness Preloaded bearings reduce flexing and improve accuracy Environment Choose stainless steel for cleanrooms, sealed types for dust/water, special materials for heat Life Span Aim for a bearing life of at least 20,000 hours. Use high-quality steel (GCr15), hardened to HRC 58–62 3. Other Important Things to Know Lubrication: Use grease for normal speeds, oil-air systems for high-speed use Seals: Good seals keep dirt out and oil in. Balance sealing with low friction Installation: Precise mounting (within 0.005mm alignment) and correct preload are key Monitoring: Add sensors to check vibration and temperature for early warning signs   Why Work With Us,Beining Technology? We help you: Understand your robot’s needs (speed, load, accuracy) Get help with installation, lubrication, and setup Keep your robots running longer with fewer breakdowns Let us help you improve your robot’s performance, precision, and lifespan. Contact us today for expert advice on industrial robot bearings!  

  Ball screw bearings (also called ball screw assemblies,ball screw support bearings) are key parts that turn rotating motion into smooth, accurate straight-line motion — or the other way around. They work much better than older types of screws because of these important features: High Efficiency: They use rolling instead of sliding, which creates far less friction. This makes them 90–98% efficient, so they waste less energy and save power. 1. Very Precise: Made with great care in controlled factories, they offer excellent accuracy — as close as ±0.005 mm — and can repeat the same movement within ±0.003 mm. You can choose from different quality levels, including high-precision ground screws. 2. Smooth and Sensitive Movement: The rolling balls prevent jerky motion, allowing for smooth starts and stops, even at very slow speeds. 3. Strong and Stiff: By using special preloading methods, engineers can remove any looseness (backlash), making the system stiff and more accurate, especially under heavy loads. 4. Long-Lasting: Made from hard materials (HRC 58–62), they wear down slowly and can last 5–10 times longer than regular screws with little need for maintenance. 5. Can Move in Both Directions: They work well whether turning into motion or motion into turning. (Note: In vertical setups, extra parts may be needed to prevent unwanted movement.) 6. Great for High Speeds: Because they create little heat and resistance, they can move faster than many other systems. 7. Flexible and Standardized: They come in many sizes, lengths, and precision levels. It’s easy to fit them into machines, and they can be customized for specific needs. Why Choose Ball Screws? Ball screw bearings are the top choice when you need exact movement, high efficiency, and long life. They are used in many high-tech areas, such as: CNC machine tools (for X/Y/Z movements) Industrial robots (like robotic arms) Equipment for making computer chips Medical imaging and robot-assisted surgery Factory automation systems With their mix of accuracy, strength, and durability, ball screws are essential for modern, high-performance machines. If you have questions or need more information,please contact Beining Technology.  

When installing precision bearings in machine tools, you’ll often find thin metal rings nestled between the paired bearings. These small but essential components — known as spacer rings, distance sleeves, or adjustment rings — play a vital role in achieving optimal spindle performance. Let’s explore why spacer rings are so important and how they contribute to the accuracy, stability, and longevity of your machine tool bearings. 1. Precision Tuning for Peak Performance Think of spacer rings as precision shims that fine-tune your bearing setup. With thickness tolerances often within ±0.005 mm, they allow engineers to: Optimize Preload: Apply the perfect amount of axial force to eliminate bearing play, improving rigidity and reducing vibration — especially critical during high-speed machining. Adjust Internal Clearance: Fine-tune the gap between bearing components to compensate for thermal expansion or heavy loads, helping to prevent early wear and failure. 2. Alignment & Load Distribution High-quality spacer rings have perfectly parallel, ground surfaces that ensure: Accurate Bearing Positioning: Keeps inner and outer rings precisely aligned, preventing misalignment-related issues. Even Load Sharing: Distributes forces evenly across both bearings in a pair, avoiding uneven stress and extending bearing life. This is especially important in applications where consistent performance and long service life are crucial. 3. Simpler Assembly, Smarter Savings Using precision spacers simplifies the assembly process and reduces overall costs by: Compensating for Tolerances: Absorbing minor dimensional differences in shafts or housings. Reducing Machining Costs: Allowing less tight tolerances on surrounding parts without compromising performance. Making Maintenance Easier: Enabling quick bearing replacement without needing to re-machine key components. 4. Thermal & Stability Control In demanding environments like high-speed machining: Specialized Spacers (such as elastic or tapered designs) can absorb thermal growth caused by heat buildup. Material Choice Matters: Steel spacers are ideal for heavy-load applications. Aluminum spacers reduce weight and inertia in high-speed spindles. These choices help maintain performance consistency under varying conditions.  When Do You Need Spacer Rings? While some modern bearing pairs come with preset preload, spacers remain essential in: Custom spindle designs High-load or high-speed configurations Applications requiring precise internal clearance adjustments Retrofitting or repairing older equipment Pro Tip: Always match the precision of your spacer ring to your bearing grade. A P4-grade bearing deserves a spacer with flatness and parallelism within ≤ 0.003 mm! Maximize Your Spindle’s Potential At Beining Technology , we specialize in engineering precision spacer rings designed to unlock the full potential of machine tool bearings. Our team ensures each spacer is built for: Exact preload control Thermal stability Seamless integration with your bearing pairs Whether you're building new spindles or upgrading existing systems, our spacers help you achieve greater accuracy, speed, and durability. Contact us today to learn more about our custom spacer solutions tailored to your specific application needs!

  Selecting the correct precision grade for paired angular contact bearings is essential for achieving optimal performance, accuracy, and longevity in machine tools. This guide will help you make an informed decision based on your application needs. 1. Understanding Bearing Precision Grades (P-Codes) Precision grades define the manufacturing tolerances and running accuracy of bearings. The most common standards are: P0 / P6: Standard or medium precision. Suitable for general-purpose machines with lower accuracy demands. P5: Precision grade. Offers better accuracy and stability. Commonly used in CNC machining centers and lathes. P4 / P2: High or ultra-high precision. Required for high-speed spindles, grinding machines, and applications needing micron-level accuracy. Tip: Higher precision means higher cost — only choose what your application truly requires. 2. Match Precision to Your Machining Needs Task Type Recommended Grade Why Roughing / Heavy Cutting P0 or P6 Cost-effective for low-accuracy jobs Semi-finishing / General CNC Work P5 (Recommended) Best balance of performance and value Finishing / Micron-Level Tolerances P4 or P2 Needed for high-precision grinding and aerospace parts 3. Consider Speed and Stability Requirements High-Speed Spindles: Require P4 or P2 bearings to reduce heat, vibration, and centrifugal forces at high RPMs. Lower Speeds / Stable Conditions: P5 usually provides sufficient accuracy and reliability. Bearings alone can’t guarantee performance — they must be supported by high-quality spindle components. 4. Supporting Components Matter Too! Even the highest-grade bearing won’t perform well if installed improperly. Ensure that: Shaft and housing have matching precision and surface finish Spacers and locking nuts are precisely machined Proper installation techniques are followed Remember: Precision starts from every component — not just the bearing itself. 5. Balance Performance and Cost P5 Bearings: Ideal for most CNC machine tools — offers excellent performance at a reasonable cost. P4/P2 Bearings: Justify the cost only when ultra-high speed or extreme accuracy is required. Avoid over-specifying — it adds unnecessary cost without real benefit. Final Tips: How to Choose the Right Precision Define your required output: surface finish, tolerance levels, etc. Know your spindle speeds and load conditions. Start with P5 precision — it’s the standard for most machine tool applications. Upgrade to P4/P2 only when high speed or ultra-fine tolerances are critical. Ensure all mounting components match the bearing's precision level. Ask an expert if unsure — proper selection avoids costly mistakes. Partner With Us for Expert Bearing Solutions Beining Technology specializes in high-performance angular contact bearings for machine tools. With over a decade of experience, we offer tailored solutions to meet your specific requirements — including precision, speed, and load capacity. Contact our technical team today to optimize your spindle performance and extend bearing life!

  Overheating is a common problem in paired angular contact bearings that can reduce performance, shorten lifespan, and even cause equipment failure. Below are the main causes and practical solutions to help prevent overheating. 1. Lubrication Problems Causes: Too little grease → leads to dry friction. Too much grease → increases resistance and heat from churning. Wrong viscosity → high-viscosity oils increase friction at high speeds. Contaminated grease → dust, moisture, or debris reduces lubrication quality. Solutions: Use the manufacturer-recommended lubricant (e.g., low-viscosity oil for high-speed applications). Clean bearings and replace contaminated grease regularly. Upgrade to better seals to prevent contamination. 2. Installation Errors Causes: Incorrect preload: Too much → increases internal friction. Too little → causes vibration and uneven load. Misalignment: shaft/housing not aligned properly → uneven stress. Improper fits: Too tight → eliminates clearance. Too loose → causes slippage ("creep"). Solutions: Set proper preload using torque measurements or thermal methods. Check alignment with dial indicators (

  What is Bearing Preload? Bearing preload is the controlled application of axial force to remove internal clearance. This improves performance by increasing stiffness, reducing vibration, and extending bearing life — especially important in high-precision applications like machine tool spindles and small motors. 1. Machine Tool Spindles Why Use Preload? Better Stiffness: Prevents movement under cutting forces for more stable machining. Higher Accuracy: Helps achieve tight tolerances (e.g., micrometer-level precision). Less Vibration & Noise: Reduces chatter, improving surface finish quality. Supports High Speeds: Allows stable operation at high RPM (e.g., CNC machines). Common Preload Methods: Fixed Preload: Uses spacers for constant pressure; good for low-speed, high-precision tools. Elastic Preload: Uses springs or washers to adjust for temperature changes. Thermal Preload: Uses heat expansion differences during operation; no manual adjustment needed. 2. Small Motors Benefits of Preload: Precise Motion Control: Eliminates play in servo or stepper motors. Stable Rotation: Reduces rotor wobble in high-speed tools like drones or power tools. Longer Life: Even load distribution reduces wear over time. How It’s Applied: Angular Contact Bearings: Paired in back-to-back or face-to-face setups. Spring-Loaded Systems: Adjust automatically with temperature or mechanical change. Nut or Wave Washer Methods: Simple and cost-effective for smaller appliances. 3. Best Practices Use the Right Force: Too much preload causes overheating; too little leads to instability. Check After Installation: Make sure bearings rotate smoothly with slight resistance. Choose the Right Bearings: Look for adjusted internal clearance (e.g., C3/C4) for better performance. Conclusion Bearing preload plays a key role in optimizing performance across many applications. Whether in high-precision machine tools or compact motors, the right preload method improves accuracy, stability, and lifespan. Choosing between fixed, elastic, or thermal methods depends on your operating conditions and design needs. Regular maintenance and proper setup are essential to keep systems running efficiently.