Demands for balls and roller bearings in the general industry

You have to follow the standards listed

Here you can find the latest demands for balls made from hardened roller bearing steel in the United States. Specifications have been updated for you by us. You can download the latest versions by clicking on the required file.

1. Overall:

• American Standard

2. Appendix:

• I. Measurement of deviation from spherical form
  
  
• II.1 Recommended procedure for microhardness, testing of small balls
  
  
• II. 2 Recommended procedure for measurement of case depth in carburized and hardened carbon steel balls
  
  
• II.2.1 Record of readings (sheet)
• II.2.2 Sample of plot sheet mm
• II.2.3 Sample of plot sheet inch
  
  
• II.3 Corrections for hardness readings taken on spherical surfaces
  
  
• III. Density, weight and quantity of common ball materials

3. Tables:

• A - Commonly used material specification reference chart
• B - Case depth requirement for carbon steel balls
• C - Tolerances by grade for individual balls
• D - Tolerances by grade for lots of balls
• E1, E2, E3 - Prefered ball sizes
• F - Applicable inspection levels and AQL
• G - Magnification factor
• L1, L2 - Number of balls
• M1, M2 - Weight of balls

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