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Help CenterThrust Ball Bearing 51208, Axial Load Bearing for Heavy‑duty Mechanical Equipment
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Welcome to Henan San Kuang Machinery Technology Co., Ltd. With over a decade of expertise in the bearing industry, we are proud to present our Thrust Ball Bearing 51208 – a reliable axial load bearing specifically engineered for heavy-duty mechanical equipment. Our factory, spanning 10,000–30,000 square meters, houses a dedicated team of 51–100 skilled professionals, ensuring every bearing meets rigorous quality standards. This model is designed to withstand exceptional axial forces in demanding environments, delivering consistent performance and extended service life.
The 51208 thrust ball bearing is a single-direction, separable bearing that excels in supporting axial loads while maintaining low friction. Its optimized raceway geometry and precision-ground steel balls minimize vibration and noise, making it ideal for applications such as machine tool spindles, gearboxes, pumps, and heavy lifting equipment. Whether you need a standard solution or a customized variant, our manufacturing capabilities can accommodate your specific requirements.
Key Features & Technical Specifications
- High Axial Load Capacity: Designed to handle heavy axial loads in one direction, with dynamic load ratings up to 60 kN and static load ratings up to 120 kN (typical).
- Durable Material: Manufactured from high-quality GCr15 bearing steel, ensuring excellent wear resistance and long fatigue life.
- Precision Engineering: Raceways are ground to tight tolerances (P0/P6/P5 grades available) for smooth rotation and minimal runout.
- Separable Design: The shaft washer, housing washer, and ball cage assembly can be easily separated, simplifying installation and maintenance.
- Low Friction: Optimized cage design (steel or brass optional) reduces friction and heat generation, even at moderate speeds.
- Versatile Lubrication: Suitable for grease or oil lubrication; pre-lubricated options are available upon request.
| Parameter | Value |
|---|---|
| Model | 51208 |
| Bore Diameter (d) | 40 mm |
| Outside Diameter (D) | 68 mm |
| Height (H) | 19 mm |
| Dynamic Load Rating (Ca) | 60.0 kN |
| Static Load Rating (Coa) | 120.0 kN |
| Limiting Speed (Grease) | 3,800 rpm |
| Limiting Speed (Oil) | 5,000 rpm |
Customer Benefits
Choosing our 51208 thrust ball bearing means you invest in reliability and efficiency. The heavy-duty construction ensures minimal downtime in your equipment, reducing maintenance costs. The separable design simplifies replacement, while the precision components contribute to smoother operation, lower energy consumption, and quieter performance. Additionally, our bearings are compatible with a wide range of industrial applications, from agricultural machinery to mining equipment.
Trust & Credibility
As a company established in 2014, Henan San Kuang Machinery Technology Co., Ltd. has grown into a reliable partner for global clients. We have an annual export value of US$2.5–5 million and ship through major ports including Shanghai, Lianyungang, Qingdao, and Tianjin. Our products reach markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and Asia. We hold multiple certifications such as ISO9001, ISO14000, OHSAS18001, and others, reflecting our commitment to quality and environmental management. With a factory size of 10,000–30,000 m² and a dedicated team of 51–100 employees, we are fully equipped to handle both standard and custom orders with prompt delivery.
We invite you to experience the difference of precision-engineered bearings. Contact us today for a quote or technical consultation. Let us support your heavy-duty applications with the 51208 thrust ball bearing – the axial load solution you can trust.
Frequently Asked Questions (FAQ)
-
Q: What is the maximum axial load this bearing can handle?
A: The static load rating is 120 kN, and the dynamic load rating is 60 kN. However, actual load capacity depends on operating conditions such as speed, temperature, and lubrication. We recommend consulting our engineering team for specific applications. -
Q: Can the 51208 bearing be used for high-speed applications?
A: The limiting speed is 3,800 rpm with grease lubrication and 5,000 rpm with oil lubrication. For higher speeds, consider using a precision grade (P5) or a different cage design. Please contact us for customized solutions. -
Q: What materials are used in this bearing?
A: The standard material is GCr15 bearing steel (equivalent to 52100 chrome steel). The cage is typically made of steel or brass. Special materials like stainless steel or ceramic balls are available on request. -
Q: How should I install and maintain this thrust ball bearing?
A: Ensure the shaft and housing are clean and properly aligned. For single-direction thrust bearings, the shaft washer (with the smaller bore) should be pressed onto the shaft, and the housing washer (with the larger bore) should fit into the housing. Lubricate as per the recommended schedule. Regular inspection for wear or noise is advised. -
Q: Do you offer custom sizes or modifications?
A: Yes, we provide customization services including non-standard dimensions, special coatings, and alternative materials. Minimum order quantities may apply. Please share your requirements for a quotation. -
Q: What certifications do your bearings have?
A: Our factory is certified with ISO9001, ISO14000, OHSAS18001, and other management systems. Individual bearing certifications can be provided upon request for specific industries. -
Q: What is the typical lead time for the 51208 bearing?
A: For standard models, lead time is typically 7–15 days after order confirmation. Larger quantities or custom orders may require 20–30 days. We ship from ports in Shanghai, Lianyungang, Qingdao, or Tianjin. -
Q: Can this bearing be used in food processing equipment?
A: While our standard bearing is not specifically designed for food contact, we can offer options with food-grade grease or stainless steel components. Please check with our sales team for compliance with HACCP or other standards.
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