---
title: "Strict Requirements for High Reliability and Extended Maintenance Intervals"
date: 2026-07-22
description: "Reliability is a Priority for Railway Transport Railway transport places extremely high demands on bearing reliability. A bearing failure in transit can lead to..."
source: https://en.mshjzc.com/railway-transport-bearings/56185.html
---

# Strict Requirements for High Reliability and Extended Maintenance Intervals

## Reliability is a Priority for Railway Transport

Railway transport places extremely high demands on bearing reliability. A bearing failure in transit can lead to a train derailment, accident, and human casualties. Therefore, maintenance intervals for railway bearings range from 800,000 — 1,200,000 km of operation.

## Factors of Reliability

- High material quality (bearing steel ШХ15)
- Manufacturing precision (P5, P4 classes)
- Quality control at all production stages
- Fatigue durability testing

## Maintenance Interval Requirements

<table><tr><th>Wagon Type</th><th>Maintenance Level</th><th>Mileage</th></tr><tr><td>Freight Wagon</td><td>TO-3</td><td>800,000 km</td></tr><tr><td>Passenger Wagon</td><td>TO-3</td><td>1,200,000 km</td></tr><tr><td>Locomotive</td><td>TO-2</td><td>600,000 km</td></tr></table>

## MS Bearing Quality Control

- 100% dimensional inspection using coordinate measuring machines
- Ultrasonic testing for internal defects
- Vibration stand testing
- Noise control per ISO 15242 standard

12-month warranty. ISO 9001 certification.