Railway Axlebox Bearings
-- Steady & Reliable Manufacturer --
Brief Description
Heavy-duty, sealed, pre-greased bearing units (TBUs/CRUs) engineered for the extreme dynamic loads and high speeds of rail transport, prioritizing long service life and safety.
Introduction
Safety and reliability in railway operations depend entirely on axlebox bearings. These components endure constant heavy vertical and lateral loads, high speeds, and temperature variations while requiring multi-year service intervals. We specialize in Tapered Roller Bearing Units (TBUs) and Cylindrical Roller Units (CRUs) designed with internal geometry that achieves superior load distribution. Crucially, they feature highly effective non-contact cassette sealing systems to protect the internal components from dust, water, and track debris, ensuring compliance with rigorous rail industry standards.
Related products
Specification Standards
| Key Feature | Common Type | NSB Offering |
|---|---|---|
| Design Standard | Cartridge/Cassette Unit | Integrated, sealed, and pre-adjusted for ease of installation. |
| Load Rating | High Dynamic Load Capacity | Meets or exceeds UIC and AAR requirements. |
| Sealing System | Labyrinth/Cassette Seals | Robust, non-contact design for maximum exclusion of debris. |
| Material Grade | High Reliability Vacuum-Degassed Steel | Minimizes inclusions to prevent rolling contact fatigue. |
| Clearance/Fit | Controlled Internal Clearance (C3/C4) | Compensates for thermal expansion at speed. |
Applications
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Freight Rail Axles: Handling heavy, slow-moving tonnage.
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Passenger Rail Bogies: High-speed and smooth operation for comfort.
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Locomotives: Supporting traction motors and gear drives.
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Metro and Urban Transit: High-frequency start/stop cycles.
Key Advantages
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Enhanced Safety and Reliability: Designed for extremely long life with low risk of overheating or catastrophic failure.
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Maintenance-Free Operation: Pre-greased and sealed for the unit's entire service life, dramatically reducing operational cost.
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High Load Capacity: Optimized roller and race geometry handles massive static and dynamic impact forces from the track.
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High Speed Stability: Controlled clearance and precision ensure smooth running at high velocities.
About Us
NINGBO SANYA BEARING CO., LTD.
Ningbo Sanya Bearing Co., Ltd. is a professional China Railway Axlebox Bearings Manufacturers and Custom Railway Axlebox Bearings Suppliers.And it established in 1994 stands right at the prime location of the Yangtze River Delta. Specialized in the production of high-quality deep groove ball bearings and insert bearings. It has emerged as a modern company integrating product development, design, manufacturing, sales and service. It can produce bearings with an inner diameter of 3mm to 100mm and customize various non-standard Custom Series 6000 Two Contact Seals Deep Groove Ball Bearing with highly-automated equipment, stable quality, and complete testing methods ensuring the quality of its products. With the vigorous development of the foreign trade department, our business in bearing production and sales in 2018 far exceeded 20 million US dollars, and the products were sold in more than 50 countries and regions.
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