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Common Materials Used in Roller Bearings In mechanical engineering, roller bearings are crucial components that support rotation, reduce friction, and ensure smooth operation in machines of all sizes. The performance and lifespan of a roller bearing largely depend on the materials used in its construction.   Choosing the right bearing material requires balancing durability, corrosion resistance, load capacity, and environmental adaptability. This guide explores the common materials for roller bearings used across Central & South America, Russia, and Asia.   1. Metallic Materials for Roller Bearings Metallic materials are the most commonly used in roller bearings due to their high strength and wear resistance. They are divided into ferrous and non-ferrous metals. Ferrous Metals (Black Metals) Examples include carbon steel and alloy steel such as GCr15, 55#, and 40Cr. These materials are widely used in bearing rings and rolling elements. Carbon steel – offers good strength and cost-effectiveness. Alloy steel – provides excellent wear and fatigue resistance, ideal for heavy-load and high-speed applications. Non-Ferrous Metals Non-ferrous materials like brass (HPb59-1) are commonly used for bearing cages due to their thermal conductivity and corrosion resistance, making them suitable for humid or chemical environments.   2. Bearing Steels: The Core of High-Performance Bearings Bearing steels are engineered for precision and endurance, ensuring reliable performance under various conditions. High Carbon Chromium Steel (GCr15, GCr15SiMn, GCr18Mo) – Used for rings and balls; performs up to 200°C after heat treatment. Carburizing Bearing Steel (G20CrMo, G20CrNiMo) – Offers a hard surface with a tough core; ideal for gearboxes and heavy machinery. Stainless Bearing Steel (9Cr18, 9Cr18Mo) – Corrosion-resistant, suitable for temperatures from −250°C to 300°C. Special Alloy Steels (Cr4Mo4V, 40Cr) – Designed for high-temperature or heavy-duty applications. 3. Non-Metallic and Composite Materials Non-metallic and composite materials are increasingly adopted for their light weight, corrosion resistance, and insulation properties. These are mainly used in bearing cages, seals, and specialized applications. Plastics (PA66, Phenolic Resin) – Reduce noise and weight while offering electrical insulation. Rubbers (NBR, FKM) – Provide sealing, vibration dampening, and chemical resistance. Composites – Combine metal and resin to achieve high strength-to-weight ratios. Ceramics – Ideal for high-speed, high-temperature, or vacuum applications.   4. Material Cleanliness and Uniformity Two often-overlooked factors—cleanliness and uniformity—significantly affect bearing performance and life expectancy. Modern vacuum smelting technologies reduce oxygen content to below 8 PPM, minimizing inclusions and micro-cracks. Consistent chemical composition and even carbide distribution are essential to maintaining strength and preventing premature fatigue.   GQZ Bearing: Your Trusted Material Expert At GQZ Bearing, we carefully select premium materials and apply advanced heat treatment to ensure optimal bearing performance under various conditions—from high temperature to corrosive environments. Our bearings are widely used across Central & South America, Russia, and Asia in industries such as automotive, mining, agriculture, and energy. We also provide customized roller bearing solutions to meet specific customer requirements for load, temperature, and speed.     Choosing the right roller bearing material is crucial for optimizing performance, extending lifespan, and reducing maintenance costs. For reliable, high-performance bearing solutions, partner with GQZ Bearing—your global expert in precision bearings.

As Halloween arrives,GQZ Bearing sends our warmest greetings to all our valued customers, partners and friends around the world!   Halloween is a joyful time for celebration—whether you’re trick-or-treating with family, attending costume parties, or sharing happy moments with loved ones. We hope every one of you can fully enjoy this festive season, and we also want to let you know that the cooperation with all of you is always our top priority, even during holidays. To ensure you all have a worry-free celebration, our team remains fully operational during the holiday. Your bearing orders will be processed, produced and delivered on time without delay. We also have sufficient inventory of our core products—automotive bearings, industrial machinery bearings and motor bearings—to meet your urgent needs. These products are well-suited for auto manufacturing, industrial production and motor operation, ensuring all your projects run smoothly. For any questions about product parameters, delivery status or new orders, our after-sales and sales teams are ready to respond promptly to every one of you. Thank you for the long-term trust and support from all of you. GQZ Bearing will continue to provide high-quality bearings and professional cross-border trade services, growing together with every customer. Wish all of you a safe, happy and wonderful Halloween!      

Plastic Bearings: High-Performance Solutions + GQZ Bearings for Industrial Excellence Plastic bearings (also known as polymer bearings) have revolutionized industrial component design, offering unmatched advantages over traditional metal bearings. As businesses search for “corrosion-resistant bearings”, “low-friction polymer bearings”, and “high-performance plastic bearings”, let’s explore why plastic bearings dominate diverse sectors—and how GQZ bearings elevate this technology.   What Are Plastic Bearings? Plastic bearings fall into two core categories: Plastic rolling bearings: Operate based on rolling friction (using rolling elements such as balls, as shown by the “ball” in the illustration). Plastic sliding bearings: Depend on sliding friction, where performance hinges on the self-lubricating properties of polymer materials.   Key Advantages of Plastic Bearings Businesses prioritize plastic bearings for these critical benefits: Corrosion Resistance: Materials like PTFE, PVDF, and PEKK thrive in harsh environments. This makes them ideal for “chemical-resistant bearings” use cases. Self-Lubrication & Low Maintenance: No external lubrication is needed, slashing downtime and costs—perfect for searches like “maintenance-free bearings”. Lightweight & Precision: Polymers reduce weight vs. metal, while precision manufacturing (as in “precision plastic bearings”) ensures tight tolerances for advanced machinery. Vibration & Impact Damping: Superior shock absorption suits dynamic loads, a common focus for “shock-resistant bearings” queries.   Different polymers address niche industry demands: Corrosion-Resistant Grades: HDPE withstands mild chemicals; PTFE or PVDF survive extreme solutions—key for “acid-resistant bearings” visibility. High-Temperature Polymers: PEKK or PEEK operate at up to 250°C, matching the intent behind “heat-resistant polymer bearings” searches. Sealed Plastic Bearings: “Sealed cap” designs GQZ Bearings: Redefining Plastic Bearing Performance Among industry leaders, GQZ bearings stand out for engineering innovation. GQZ combines advanced polymers with precision design to deliver: Consistent performance across wide temperature ranges. Enhanced load capacity without sacrificing corrosion resistance. Tailored solutions for sectors like automotive, medical, and industrial automation—aligning with “GQZ precision bearings” and “industrial polymer bearings” searches.     Why Choose Plastic Bearings (and GQZ)? From food processing (hygiene + corrosion needs) to aerospace (weight + precision demands), plastic bearings—especially GQZ’s range—cut total cost of ownership via less maintenance, survive extreme conditions, and boost equipment efficiency. For businesses targeting “best plastic bearings” or “GQZ plastic bearings” on search engines, GQZ offers solutions tailored to your application. Explore GQZ today—search “GQZ industrial bearings” or “high-performance polymer bearings” to find your perfect fit.  

Ceramic ball bearings stand as a groundbreaking innovation in industrial engineering, renowned for their exceptional performance in high-precision and high-speed applications. As a prime example of advanced engineering ceramics deployed across industries, they attract global attention for solving critical challenges in machinery and equipment. Why Ceramic Ball Bearings Dominate High-Demand Scenarios? In high-speed, precision-bearing contexts, multi-layer composite ceramic ball bearings (featuring Si₃N₄ ceramic rolling elements and steel rings) are widely adopted. These bearings offer high standardization, minimizing structural modifications to machine tools, simplifying maintenance, and excelling in scenarios like precision high-speed spindles—aligning with top Google search terms such as “high-speed ceramic ball bearings”, “precision ceramic bearings”, and “industrial ceramic bearings”.   4 Core Advantages of Ceramic Ball Bearings · High-Temperature Resilience: Ceramic balls have extremely low thermal expansion coefficients, so they rarely deform due to temperature fluctuations. While standard bearings typically max out at ~180°C, ceramic ball bearings operate reliably above 120°C—making them essential for searches like “high-temperature ceramic bearings”. · Ultra-High Speed Capability: Thanks to ceramics’ inherent self-lubricating properties and low friction coefficients, ceramic ball bearings achieve rotational speeds exceeding 10,000 RPM—far outpacing conventional bearings. This makes them a top choice for queries like “ultra-high speed ceramic bearings”. · Extended Service Life: They require no additional lubrication and resist oil contamination. User feedback confirms ceramic ball bearings’ service life is 2–3 times longer than ordinary bearings—addressing pain points for those searching “long-life industrial bearings”. · Electrical Insulation: Ceramic balls act as insulators, preventing electrical corrosion between inner and outer rings. When paired with ceramic cages, they form fully ceramic bearings—ideal for applications tied to “electrically insulated ceramic bearings”.   Discover GQZ Bearings’ Ceramic Ball Bearing Solutions GQZ Bearings offers a comprehensive range of ceramic ball bearings engineered for superior performance. Our product portfolio is designed with meticulous attention to detail, ensuring each bearing meets the strict demands of diverse industrial scenarios.   Ceramic Ball Bearing Parameter Examples   Bearings No. Boundary dimensions(mm) Bearings No. Boundary dimensions(mm) d D B r d D B r 684CE 4 9 2.5 0.1 6804CE 20 32 7 0.3 694CE 11 4 0.15 6904CE 37 9 0.3 604CE 12 4 0.2 16004CE 42 8 0.3 624CE 13 5 0.2 6004CE 42 12 0.6 634CE 16 5 0.3 6204CE 47 14 1 685CE 5 11 3 0.15 6304CE 52 15 1.1 695CE 13 4 0.2 6404CE 72 19 1.1 605CE 14 5 0.2 6805CE 25 37 7 0.3 625CE 16 5 0.3 6905CE 42 9 0.3 635CE 19 6 0.3 16005CE 47 8 0.3 686CE 6 13 3.5 0.15 6005CE 47 12 0.6 696CE 15 5 0.2 6205CE 52 15 1 606CE 17 6 0.3 6305CE 62 17 1.1 626CE 19 6 0.3 6405CE 80 21 1.5 636CE 22 7 0.3 6806CE 30 42 7 0.3 687CE 7 14 3.5 0.15 6906CE 47 9 0.3 697CE 17 5 0.3 16006CE 55 9 0.3 607CE 19 6 0.3 6006CE 55 13 1 627CE 22 7 0.3 6206CE 62 16 1 637CE 26 9 0.3 6306CE 72 19 1.1 688CE 8 16 4 0.2 6406CE 90 23 1.5 698CE 19 6 0.3 6807CE 35 47 7 0.3 608CE 22 7 0.3 6907CE 55 10 0.6 628CE 24 8 0.3 16007CE 62 9 0.3 638CE 28 9 0.3 6007CE 62 14 1 689CE 9 17 4 0.2 6207CE 72 17 1.1 699CE 20 6 0.3 6307CE 80 21 1.5 609CE 24 7 0.3 6407CE 100 25 1.5 629CE 26 8 0.3 6808CE 40 52 7 0.3 639CE 30 10 0.6 6908CE 62 12 0.6 6800CE 10 19 5 0.3 16008CE 68 9 0.3 6900CE 22 6 0.3 6008CE 68 15 1 6000CE 26 8 0.3 6208CE 80 18 1.1 6200CE 30 9 0.6 6308CE 90 23 1.5 6300CE 35 11 0.6 6408CE 110 27 2 6801CE 12 21 5 0.3 6809CE 45 58 7 0.3 6901CE 24 6 0.3 6909CE 68 12 0.6 16001CE 28 7 0.3 16009CE 75 10 0.6 6001CE 28 8 0.3 6009CE 75 16 1 6201CE 32 10 0.6 6209CE 85 19 1.1 6301CE 37 12 1 6309CE 100 25 1.5 6802CE 15 24 5 0.3 6409CE 120 29 2 6902CE 28 7 0.3 6810CE 50 65 7 0.3 16002CE 32 8 0.3 6910CE 72 12 0.6 6002CE 32 9 0.3 16010CE 80 10 0.6 6202CE 35 11 0.6 6010CE 80 16 1 6302CE 42 13 1 6210CE 90 20 1.1 6803CE 17 26 5 0.3 6310CE 110 27 2 6903CE 30 7 0.3 6410CE 130 31 2.1 16003CE 35 8 0.3 6811CE 55 72 9 0.3 6003CE 35 10 0.3 6911CE 80 13 1 6203CE 40 12 0.6 16011CE 90 11 0.6 6303CE 47 14 1 6011CE 90 18 1.1 6403CE 62 17 1.1 6211CE 100 21 1.5 6804CE 20 32 7 0.3 6311CE 120 29 2 6904CE 37 9 0.3 6411CE 140 33 2.1 16004CE 42 8 0.3 6812CE 60 78 10 0.3 6004CE 42 12 0.6 6912CE 85 13 1 6204CE 47 14 1 16012CE 95 11 0.6 6304CE 52 15 1.1 6012CE 95 18 1.1 6404CE 72 19 1.1 6212CE 110 22 1.5 6805CE 25 37 7 0.3 6312CE 130 31 2.1 6905CE 42 9 0.3 6412CE 150 35 2.1 16005CE 47 8 0.3 6813CE 65 85 10 0.6 6005CE 47 12 0.6 6913CE 90 13 1 6205CE 52 15 1 16013CE 100 11 0.6 6305CE 62 17 1.1 6013CE 100 18 1.1 6405CE 80 21 1.5 6213CE 120 23 1.5 6806CE 30 42 7 0.3 6313CE 140 33 2.1 6906CE 47 9 0.3 6807CE 35 47 7 0.3 16006CE 55 9 0.3 6907CE 55 10 0.6 6006CE 55 13 1 16007CE 62 9 0.3 6206CE 62 16 1 6007CE 62 14 1 6306CE 72 19 1.1 6207CE 72 17 1.1 6406CE 90 23 1.5 6307CE 80 21 1.5   From precise dimensional controls to optimized operational parameters, models such as 684CE, 6800CE, and 16011CE are tailored to deliver reliability and efficiency—whether your application calls for high precision, rapid speed, or resilience in challenging environments.  

How to select the right bearings for mechanical equipment to optimize performance, reduce maintenance costs, and extend service life? Whether for industrial machinery, household appliances, or automotive applications, bearing selection is a crucial step.     1. Bearing Size: Basic Rated Load Start by determining the right size using the basic rated load. Consider the machine’s design life and operating conditions (e.g., load type, speed, duty cycle). Refer to fatigue life factors: for instance, continuous-use devices like vacuum cleaners need different factors than occasional-use machinery. Choosing the optimal size avoids over-engineering while ensuring load capacity. 2. Accuracy Class Bearing accuracy impacts rotational precision. Classes range from P0 (standard) to P2 (ultra-precision). For precision-critical apps (e.g., machine tool spindles, audio equipment), choose P4/P5. General machinery (e.g., fans, conveyors) works well with P0/P6. 3. Fit Selection The fit between the bearing’s inner ring and shaft (or outer ring and housing) is critical. Interference fit prevents slippage but must be balanced—too much interference causes stress; too little leads to fretting damage. Automotive or press-fit components demand precise fit control to avoid seizure. 4. Clearance Selection Bearing clearance (radial/axial) accounts for thermal expansion and operational play. For micro-bearings, use clearance codes (e.g., MC1, MC3). In high-temperature environments (e.g., industrial ovens), opt for larger clearance (C3, C4) to avoid binding. 5. Cage Material & Structure Cages separate rolling elements and influence speed/load capacity. Materials include SPCC (steel) for medium-speed apps (e.g., deep groove ball bearings) and PA66 (plastic) for low-friction, high-speed scenarios (e.g., small appliance motors). Cage design (stamped/solid) matches load and speed needs. 6. Lubrication Choice Lubricants (grease/oil) reduce friction and dissipate heat. Deep groove ball bearings rely on grease for longevity. Select lubricants based on temperature, speed, and environment—high-speed bearings need low-viscosity grease; harsh environments need anti-corrosive formulas. 7. Vibration & Noise Levels For quiet apps (e.g., household appliances), choose bearings with low vibration/noise ratings (classes V1–V4). A “V3/V4” rating ensures smooth, quiet operation (ideal for refrigerators/vacuum cleaners).   Example: Vacuum Cleaner Motor Bearings A vacuum cleaner runs at 30,000–50,000 RPM with high loads and dust. Key selections: Accuracy: P5 (for precise rotation). Cage: PA66 solid cage (high speed, low friction). Sealing: Contact seals (prevents dust ingress). Clearance: MC3 (accommodates thermal expansion). GQZ Bearings: Precision You Can Trust   When seeking top-tier performance, GQZ bearings deliver. Engineered for high precision and durability, GQZ bearings excel in industries from automotive (e.g., EPS motors) to industrial machinery. Strict quality control ensures low vibration, optimal clearance, and perfect fits—making them ideal for demanding apps. Whether you need high-speed or heavy-load solutions, GQZ is a reliable choice.     Explore our GQZ bearing collection or contact our experts for personalized guidance.

  At GQZ Bearing, we specialize in custom bearings for industries like automotive, industrial equipment, and renewable energy. In 2023, we had the opportunity to meet a Turkish bearing wholesaler at the Turkey exhibition. They introduced us to their customer, a leading automobile manufacturer, who was facing issues with their automatic transmission production line. We’ve been working closely with them ever since.   The problem? The bearings they were using couldn’t handle high speeds without developing excess play. On top of that, small batch orders were often delayed due to supplier capacity limits. Their customer needed a supplier who could respond quickly and provide stable, high-performance bearings.   -  Meeting with clients during the exhibition in Turkey -     - The client and their delegation arrived in China to tour the factory -   Custom Gearbox Bearings to the Rescue To solve this, we looked closely at the customer’s needs. They required bearings that could withstand high temperatures and reduce wear. After analyzing the situation, we realized the gearbox bearings also needed to handle high speeds and frequent shifting without deforming. Our solution? A custom double-row angular contact ball bearing with a reinforced cage. We chose materials that could handle the high-speed, high-impact conditions of the transmission, ensuring a longer-lasting and more reliable product. Quick Response and Successful Testing Within just 3 days, we selected the right materials (high-temperature nylon 66 with fiberglass) and optimized the bearing design. We produced a prototype in 7 days, which passed testing with flying colors. The new bearings worked perfectly in the high-speed conditions, solving the issue of bearing play that had troubled the customer.   - Manufacture bearings, package and ship them -   Building a Strong, Long-Term Partnership Our fast response and the quality of our custom gearbox bearings impressed the customer. They placed an initial order for 850 sets, and we’ve been working with them ever since. Not only did they continue to place regular orders, but they also added us to their list of trusted bearing suppliers. Today, GQZ Bearing continues to provide high-performance gearbox bearings that meet the customer’s needs and help them overcome challenges in their production line. Conclusion This case shows how GQZ Bearing’s custom gearbox bearings can tackle tough problems and improve performance. By responding quickly and delivering high-quality solutions, we’ve built a strong partnership with this Turkish customer, and we’re excited to continue supporting them. We’re looking forward to working with more customers in the future and helping them solve their bearing challenges with the same level of dedication and expertise!