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Ningbo Kent Bearing Co., Ltd

We are Ningbo Kent Bearing, one of the leading high-quality bearing manufacturer and supplier, established in 2003. Specializing in the production of medium and high-end silent bearings
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Why
Choose Us
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20+ Years
R&D And Manufacturing, Founded in 2003, we focus on the production of high precision and low noise deep groove ball bearings.
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20+ Lines
Automatic Production Lines. Make sure we can make a wide range of bearings to various countries of the world.
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800, 000 USD
Annual R&D Investment. Make better bearings continuously.
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30,000,000 PCS
Annual production capability. Bearings are exported at home and abroad. Have strong supply capacity
SOLUTION
SOLUTION
  • Bearing Procurement Dilemmas for Commercial Treadmill Manufacturers
    10-28 2026
                                Commercial fitness equipment operates continuously under heavy load for long periods, so the performance requirements for bearings, the core transmission  components, are much higher than those for household products.             As a professional supplier of 6203 motor bearings for fitness equipment, Ningbo Kent Bearing has been deeply engaged in the fitness equipment segment for many years. We have developed exclusive customized solutions to meet the demand of continuous heavy-load operation in commercial scenarios. # Custom Clearance for Continuous Operation To meet the working condition requirements of customers' commercial treadmills, Ningbo Kent Bearing has developed custom 6203 2RS bearings with dedicated C3 internal clearance. The C3 clearance design better copes with frequent impacts and temperature rise generated during continuous operation, adapting to continuous running conditions and preventing bearing seizure and failure caused by thermal expansion and contraction. # High-Temperature Grease for Improved Thermal Stability To accommodate temperature rise under continuous operation, Kent Bearing equips this bearing with special high-temperature grease. It maintains lubrication performance at elevated temperatures and prevents premature bearing damage resulting from lubrication failure. # Fully Automatic Production for Stable Quality Ningbo Kent Bearing relies on more than 20 fully automatic production lines and manufactures in strict accordance with the ISO9001 quality management system. Every bearing passes noise testing to ensure noise performance meets the requirements for gym applications. In addition, the inner and outer rings of bearings are super-finished to reduce raceway surface roughness and improve the fatigue resistance of bearings, extending service life from the process perspective. For niche applications such as motor bearings for fitness equipment, standard off-the-shelf bearings often fail to meet special working condition requirements. Only customization based on application characteristics can effectively solve customers’ pain points. With over 20 years of focus on motor bearings, Ningbo Kent Bearing can adjust parameters including internal clearance, grease and dimensions according to customers’ different working conditions, delivering system-level solutions.       Theoretical selection is only the first step. Tolerance fits and lubrication schemes under actual working conditions are often more complex. Kent Bearing has supplied more than 200 million sets of motor bearing solutions to over 500 motor manufacturers worldwide. If your motors are troubled by bearing issues, or you want to prevent bearing problems in advance, please contact the Kent technical service team at 86-19957451956. We will help you quickly locate the root cause of problems, easily resolve motor failures, reduce after-sales losses and retain your key customers!
  • Wherever CIIF is,we will be there
    10-27 2026
    For companies serving the bearing industry, participation in the China International Industry Fair offers a relevant setting to connect industrial innovation with global trade. Bearings are essential components in machinery and equipment, supporting motion and helping systems operate reliably. Their role links them closely to the fair's industrial focus, where manufacturers and industry professionals can explore products, technologies, and business opportunities across sectors. The event provides a platform for companies to showcase bearing-related products, exchange information, and build connections with potential partners. By connecting the China International Industry Fair's industrial environment with the needs of global trade, bearing products are more visible to international audiences. The fair brings industry participants together, while the platform supports communication and commercial engagement. Together, these elements create a practical context for presenting bearing businesses to the world. Any question pls feel free to contact me: Web: www.bgbearing.com  Email:info@bgbearing.com Mobile/whatsapp/wechat: +86-19957426729  
  • Common Motor Bearings for Planetary Reducer Manufacturers
    10-23 2026
          Overview   In industrial robots, planetary gear reducers perform the core function of speed reduction and torque increase. The transmission accuracy, rigidity and service life of a reducer depend not only on the gears, but also on those inconspicuous bearings inside.     Bearings serve as the first support at the input end of the reducer. For bearing manufacturers supplying planetary gear reducers and servo motors, the product lines are highly concentrated on deep groove ball bearings and angular contact ball bearings. Among them, deep groove ball bearings are the most widely used "main force", and are the most common type for the drive end and non-drive end of small and medium-sized servo motors.     ·Advantages: low friction coefficient, high limiting speed, low noise, controllable cost;     ·Upgrade direction: To meet the low-noise requirements for robot-grade applications, silent-grade steel balls are normally adopted, the raceway curvature radius is optimized, and low-noise long-service-life grease is filled;     ·Kent Practice: 6000/6200/6300 series deep groove ball bearings are Kent’s main models matched for servo motors. P6/P5 accuracy classes are available. Contact and non-contact rubber seals come as standard, suitable for the input support position of most small and medium-sized precision planetary gear reducers. 1. Specialized Division of Labor, Each Leveraging Its Strengths       Reducer manufacturers focus on gear meshing design, housing machining and assembly processes. They entrust the core support components at the motor input end to professional bearing manufacturers for customized production — a sign of a mature industrial robot industrial chain.     Kent Bearing has 20 years of in-depth experience in the field of deep groove ball bearings. Fully automatic production lines enable full-process control from steel ball sorting, raceway superfinishing to seal assembly. We optimize internal parameters according to the specific working conditions of reducer manufacturers, delivering better practical solutions than general standard parts. 2. From "Standard Parts" to Customization   A qualified bearing supplier does not merely conduct spot goods trading, but participates in customers’ front-end design. Kent Bearing can select bearing models or provide non-standard customization based on the reducer input bore diameter and shafting force model. We optimize the raceway curvature radius, steel ball diameter and cage structure, and cooperate with customers on life verification (L10 calculation) and bench test validation. 3. Domestic Substitution Is Accelerating       In the past, bearings for precision servo motors relied heavily on imported brands such as NSK, SKF and FAG. Today, professional domestic bearing manufacturers represented by C&U Bearings, HCH Bearing and Kent Bearing have gradually met robot-grade matching standards in precision class, vibration & noise performance, service life and reliability. For reducer manufacturers, the adoption of domestic precision bearings brings the following benefits:    ·Lower procurement cost: typically a 20%~40% price advantage over imported brands;    ·Shorter lead time: reduced from 8–12 weeks for sea freight to 2–3 weeks for local delivery;    ·Faster custom response: barrier-free technical communication, modification cycles measured in days;    ·Supply chain security: free from disruptions caused by international logistics and geopolitical policies.         The competition for accuracy in robot reducers appears to be a contest of gears and housings, but fundamentally it is a systematic competition involving bearings, materials and manufacturing processes. If you are a reducer or servo motor manufacturer troubled by the accuracy, noise, service life or lead time of input-end bearings, please contact the Kent technical service team at 86-19957451956. Kent Bearing’s engineering team can support you with selection calculation, life verification and small-batch custom validation.
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