353130B CTBU150X250X160 Railway train bearings
353130B Product Introduction
The 353130B is a compact upgraded double-row tapered roller bearing developed specifically for 25-ton axle-load heavy-haul railway freight wagons. Adopting an optimized streamlined compact structure, this bearing cancels the traditional sealing seat design and integrates a low-friction LL oil seal configuration, which effectively shortens the journal length and reduces shaft bending deformation during high-load operation. Equipped with a customized plastic-steel spacer between the rear retainer and inner ring, it eliminates micro-abrasion and fretting corrosion at the contact interface, delivering more stable structural coordination than conventional railway bearings.
Manufactured from high-purity GCr15 bearing steel with precise overall quenching and raceway superfinishing treatment, the bearing features uniform internal stress distribution and excellent mechanical stability. Its refined roller and raceway matching design greatly enhances impact resistance and alternating load durability, adapting to frequent vibration, variable load impact and long-distance continuous running of railway lines. The optimized internal lubrication structure cooperates with standard grease filling capacity to maintain stable lubrication state, effectively suppressing temperature rise and wear failure under high-speed and heavy-load working conditions.
Tailored for 120km/h commercial operation speed of heavy-haul freight vehicles, this bearing achieves a perfect balance of lightweight compact design and ultra-high load capacity. With a standardized railway structural layout and reliable anti-corrosion and anti-wear performance, it boasts a design service life of over 2 million kilometers. It serves as a core upgraded component for modern heavy-duty railway bogie axle box systems, effectively improving vehicle operation stability and reducing long-term equipment maintenance costs.
Technical Specifications
Inner Diameter (d): 150 mm
Outer Diameter (D): 250 mm
Outer Ring Width: 160 mm
Assembly Height: 180.6 mm
Bearing Weight: 30.67 kg
Unique Product Advantages
1. Innovative compact structure without traditional sealing seat effectively shortens shaft journal, reduces shaft bending deformation, and improves overall wheel set running accuracy;
2. Custom plastic-steel spacer design eliminates interface fretting corrosion, solving the common wear problem of traditional bearings during long-term vibration operation;
3. Low-friction sealing configuration reduces operating resistance and heat generation, ensuring stable lubrication performance and extending service life under high-speed heavy-load conditions;
4. High-strength material and optimized internal geometry endow ultra-high load capacity and fatigue resistance, fully meeting the long-cycle operation requirements of 25-ton heavy-haul freight railways.
Application Scenarios
Specially designed for axle box and wheel set support systems of 25-ton axle-load heavy-haul railway freight wagons. It is widely used in mainstream speed-increased and heavy-duty freight railway lines, providing high-reliability structural support and stable operation guarantee for long-distance and high-frequency rail freight transportation equipment.
