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BT2-8545 Railway Tapered Roller Bearings
BT2‑8545 Railway Tapered Roller Bearings
Also known as: BT2‑8545AD / VR662Alibaba.co...
| Basic Dimensions (mm) | |
|---|---|
| Bore d | 130 |
| Outer Diameter D | 230 |
| Width B | 160 |
| Basic Dynamic Load Cr(kN) | |
| Basic Static Load Cor(kN) | |
| Weight(kg) |
Product Introduction
BT2‑8545 is a pre‑assembled sealed double‑row tapered roller axle‑box bearing unit for metro and urban rail vehicles, compliant with EN12080 railway standard. It is manufactured from high‑quality carburized bearing steel with P5 precision grade.
This unit can bear heavy combined radial load and bidirectional axial thrust loads. Optimized logarithmic roller crowning reduces edge stress and improves anti‑shock performance under frequent vibration and impact conditions. Integrated multi‑lip sealing structure effectively blocks dust, sand and moisture contamination. Glass‑fiber reinforced polyamide cage provides stable roller guidance for high‑speed operation.
It is designed for long service life up to 2.4 million km for metro A‑type vehicles. Pre‑mounted unit design simplifies workshop assembly, inspection and replacement during overhaul cycles.
Key Features
‑ Pre‑assembled sealed railway axle‑box unit ‑ Double‑row tapered roller structure, carries combined radial‑bidirectional axial loads ‑ Carburized steel material, high contact fatigue resistance ‑ Optimized roller crowning for shock‑absorbing performance ‑ Integrated sealing for harsh track‑side environment ‑ Polyamide cage for high‑speed stable running ‑ Meets EN12080 railway bearing specification
Application
Axle‑box wheel‑set support for metro A‑type vehicles, urban rail transit rolling stock, suitable for mass‑transit urban railway bogie systems.
Disclaimer: All unlisted dimension and load‑rating data shall be obtained from original manufacturer drawings or factory inspection reports.
