JB/T 7361-1994Rolling bearings - Hardness test methods for parts (English PDF)

1 Scope

This standard specifies the hardness test method for the steel and non-ferrous metal bearing parts.

This standard is applicable to the hardness test of the steel bearing parts after quenching and tempering, the finished bearing parts, and the non-ferrous metal bearing parts.

2 Normative references

The provisions in following documents become the provisions of this Standard through reference in this Standard. For the dated references, the subsequent amendments (excluding corrections) or revisions do not apply to this Standard;

however, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable.

For undated references, the latest edition of the referenced document applies.

GB/T 230.1-2004 Metallic Rockwell hardness test - Part 1.Test method (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-1.1999, MOD)

GB/T 1184-1996 Geometrical tolerancing - Geometrical tolerance for features without individual tolerance indications (eqv ISO 2768-2.1989)

GB/T 4340.1-1999 Metallic materials - Vickers hardness test - Part 1.Test methods (eqv ISO 6507-1.1997)

GB/T 17394-1998 Metallic materials - Leeb hardness test

JB/T 1255-2001 Specification for heat-treatment of rolling bearing parts made from high carbon chromium steel

3 Symbols

The following symbols apply to this standard.

be. The effective width of the ferrule end face (the ferrule wall thickness minus the internal and external chamfer size);

D. Nominal outer diameter of the ferrule;

Dw. Nominal diameter of rolling body;

HRA. A scale Rockwell hardness;

HRC. C scale Rockwell hardness;

HLD. Leeb hardness as measured by D-type impact device;

HV. Vickers hardness;

Ra. Surface roughness.

4 Basic requirements of hardness test

5 Samples