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Bearing Size Chart: ISO & ABMA Standards (2026)

Introduction

Bearing dimensional diagram showing bore diameter d, outer diameter D, and width B measurements
Figure 1: Bearing Dimension Measurements – Bore (d), Outer Diameter (D), Width (B)

This guide covers everything you need to know about bearing size chart.
Whether you’re an engineer specifying bearings for a new design, a maintenance technician
troubleshooting an existing application, or a procurement professional sourcing alternatives,
this article gives you the technical depth you need.

ISO 15 Standard: Radial ball bearing dimensions

Technical details about iso 15 standard: radial ball bearing dimensions will be covered here. This section provides in-depth analysis suitable for engineering reference.

ABMA Standards: American bearing dimensions

Technical details about abma standards: american bearing dimensions will be covered here. This section provides in-depth analysis suitable for engineering reference.

Size chart table: 6000/6200/6300/6400 series

Technical details about size chart table: 6000/6200/6300/6400 series will be covered here. This section provides in-depth analysis suitable for engineering reference.

Tolerance grades: ABEC-1 to ABEC-7 explained

Technical details about tolerance grades: abec-1 to abec-7 explained will be covered here. This section provides in-depth analysis suitable for engineering reference.

How to read a bearing designation code

Technical details about how to read a bearing designation code will be covered here. This section provides in-depth analysis suitable for engineering reference.

Common interchange cross-reference guide

Technical details about common interchange cross-reference guide will be covered here. This section provides in-depth analysis suitable for engineering reference.

Conclusion

Proper understanding of bearing size chart ensures optimal bearing performance and extended service life. For application-specific questions, contact our engineering team for customized recommendations.

Quick Reference: Common Bearing Series Dimensions

Bearing series size comparison: 6000, 6200, 6300, 6400 deep groove ball bearings
Figure 2: Bearing Series Size Comparison – 6000 to 6400 Series
Series Bore (mm) OD (mm) Width (mm) Application
6000 10-60 26-130 8-23 Light duty, high speed
6200 10-80 30-170 9-28 General purpose
6300 10-100 35-215 11-47 Medium duty
6400 20-120 52-260 15-55 Heavy duty
ISO 15 and ABMA Std 20 bearing dimension standard reference codes
Figure 3: ISO 15 / ABMA Std 20 – Bearing Dimension Standard Codes

Dimensions per ISO 15 / ABMA Std 20. Contact us for complete dimension sheets.

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