Ningbo Kent Bearing Co., Ltd

Many purchasers and maintenance technicians assume that stainless steel bearings will never rust once selected. In their understanding, stainless steel, as the name suggests, does not rust and can fully resist water, moisture and corrosion.                                     However, many users encounter pitfalls in practical applications. Even with stainless steel bearings, rust spots and dark marks appear on the surface soon. Pitting corrosion, rotation jamming may occur, and the bearings eventually wear out and fail. Is this a product quality issue, or a result of cutting corners by suppliers?     The answer is straightforward. We misunderstood the meaning of "stainless steel" from the start. Stainless does not mean rust-proof forever.     The rust resistance of stainless steel bearings relies on a dense passive film on the surface. This protective film isolates moisture and air, and can basically prevent rust in dry indoor environments. Nevertheless, the passive film is not robust. When exposed to accumulated water, salts, acids and alkalis, especially chloride ions, the protective film will be damaged rapidly.     Corrosion caused by chloride ions features strong permeability. It does not only stay on the surface but penetrates deep into the metal and forms pitting corrosion. At the initial stage, only tiny dark spots appear, which are hard to detect. As corrosion worsens, bearing precision drops, abnormal noise and jamming occur, and the failure will disrupt the normal operation of the whole equipment.   Selecting bearings based solely on price is a major misconception when using stainless steel bearings. Different working conditions require completely different materials; there is no universal grade. • 201 / 304 stainless steel bearings: Suitable for conventional scenarios with dry indoor environment, no corrosion and no salt, featuring excellent cost performance to meet basic rust prevention requirements. • 316 stainless steel bearings: With stronger resistance to salt and chloride ions, they are suitable for mildly corrosive environments such as outdoor humid conditions, rain wash and food processing. Even if 316 material is selected, it can only delay rusting and cannot completely eliminate corrosion. Under extreme working conditions such as seawater immersion, high salt, high acid and alkali, and heavy chemical corrosion, the passive film of all types of stainless steel will keep failing, and corrosion problems still exist. The final selection guide is as follows to avoid unnecessary costs. • Dry indoor and conventional working conditions: Choose 304 stainless steel bearings for cost-effectiveness;       • Outdoor humid, light salt spray and food industry applications: Choose 316 stainless steel bearings for enhanced corrosion resistance;       • Seawater immersion, high salt, high acid & alkali and heavy corrosion working conditions: Select full ceramic bearings for a permanent solution.           KENT Stainless steel is only rust-resistant, not absolutely rust-free. Properly distinguishing material properties and selecting bearings accurately according to on-site working conditions can avoid corrosion problems from the source and reduce extra losses caused by equipment maintenance and downtime. Kent Bearing has supplied more than 200 million sets of motor bearing solutions for 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 19957028916. We will help you quickly locate the root cause of problems, easily resolve motor faults, cut after-sales losses and retain key customers steadily!

With the continuous deepening of electrification, widespread popularization of intelligence, vehicle-grid integration and global overseas expansion, the new energy vehicle industry has grown in scale. The core competition focus has shifted to quality, cost and supply chain. As the power core of electric vehicles, the motor replaces the engine of fuel vehicles and features reversible operation. It converts electric energy into mechanical energy to power the vehicle during driving; while during coasting and braking, mechanical energy is converted into electric energy to recharge the battery and realize energy recovery. Model 6201 bearing has a bore diameter of 12 mm, outer diameter of 32 mm and width of 10 mm. It is custom-designed for new energy vehicle motors. Made of Gcr15 professional bearing steel, its inner and outer rings go through multiple grinding processes, achieving a precision class of P6/P5.Available clearance options include C0, C2, C3, C4 and C5 to match customers’ diverse working conditions. Our noise grades are generally ZV2/ZV3/ZV4 to meet buyers’ various requirements on noise performance. Any question pls feel free to contact us: Email:info@bgbearing.com Web: www.bgbearing.com  Tel:0086-574-63087277 , 63192752  Fax: 0086-574-63192753 , Mobile/whatsapp/wechat: +86-19957426729

With the continuous growth of the global medical device market, medical equipment manufacturers have put forward higher requirements for the supply chain stability of core components.     Although international top bearing brands have brand advantages, bearings for medical devices belong to a segmented long-tail market. There are problems such as high customization threshold, large minimum order quantity, slow response speed and high price. Meanwhile, affected by geopolitical factors, there is a risk of supply disruption, making it difficult to ensure long-term and stable supply. However, most domestic general bearing manufacturers lack in-depth technical accumulation in precision, high-speed and other segmented requirements. Their products have poor batch consistency, which cannot meet the strict standards of medical equipment for low noise and high reliability, and cannot continuously adapt to customers' capacity expansion demands.     For medical device manufacturers, finding a motor bearing supplier that can meet performance requirements and provide long-term stable supply has become a key demand to guarantee production and reduce supply chain risks. Choosing Ningbo Kent Bearing means obtaining technical accumulation focused on the segmented track, stable and continuous supply capacity, and customized solutions adapted to medical scenarios.   20 Years Of Accumulation In The Bearing Industry 01   Kent Bearing's predecessor was founded in 2003. It has been deeply engaged in the segmented motor bearing track for more than 20 years, accumulating thousands of sets of product data for different working conditions. At present, it has obtained 13 utility model patents, established a strict ISO9001 quality control system. Its products have passed international certifications such as ROHS and SGS, and product consistency is fully guaranteed. 02   Ensure Long-term And Stable Supply   Kent Bearing owns a 25,000 ㎡ production and warehousing base, equipped with more than 20 automatic production lines. The annual capacity reaches 30 million sets, with 3 million sets of regular stock. It can achieve same-day delivery, adapt to customers' capacity expansion demands and ensure long-term continuous supply. Scenario-based Customization Capability 03   Different from traditional general bearing manufacturers, Kent Bearing focuses on the segmented track of "precision, high-speed, low-noise" motor bearings. It can provide customized solutions such as pre-filled lubrication and special sealing for different scenarios of medical equipment, solving the industry pain point that "bearing precision meets standards but the complete machine noise exceeds limits". Meanwhile, it provides 24-hour technical response and rapid small-batch sampling to adapt to the R&D iteration demands of medical customers.   Ningbo Kent Bearing Co., Ltd. is a domestic bearing supplier specializing in the R&D and manufacturing of motor bearings for precision instruments and medical equipment. It has been deeply engaged in the motor bearing field for more than 20 years, focusing on segmented scenarios with strict bearing performance requirements such as medical equipment. It has built a full-chain value delivery system of "high-precision manufacturing + fast delivery + scenario customization", and can provide customers with long-term and stable supply guarantee.