BT2-8501 Railway Tapered Roller Bearings

BT2‑8501 Railway Tapered Roller Bearings

Product Introduction

BT2‑8501 is a pre‑assembled sealed double‑row tapered roller axle‑box bearing unit for heavy‑duty railway rolling stock, complying with EN12080 railway standard. It is manufactured from high‑purity vacuum‑degassed carburized bearing steel with P5 precision grade.

This unit can sustain heavy combined radial load and bidirectional axial thrust loads generated during curve negotiation and snaking movement. Optimized logarithmic roller crowning reduces edge stress and improves anti‑shock performance under track‑induced vibration and impact loads. Integrated multi‑lip sealing system prevents ingress of dust, sand and moisture in harsh track‑side environments. High‑strength solid steel cage ensures stable roller guidance under long‑term variable‑speed and heavy‑load operating conditions.

Supplied as a complete pre‑mounted cartridge unit, it simplifies workshop assembly, overhaul inspection and field replacement, minimizing vehicle downtime.

Key Features

‑ Pre‑assembled sealed cartridge‑type railway axle‑box unit ‑ Double‑row tapered roller construction for combined radial and bidirectional axial loads ‑ High‑quality carburized steel for superior contact‑fatigue performance ‑ Optimized roller crowning for shock‑absorbing capability ‑ Robust integrated sealing against contamination ‑ Heavy‑duty steel cage for reliable long‑run operation ‑ Complies with EN12080 railway bearing specification

Application

Designed for axle‑box wheel‑set assemblies of railway passenger coaches, freight wagons and heavy‑duty locomotives, applied on bogie systems for main‑line railway transportation.