GB/T 6391-2003 (English Version) PDF

Standard No.: GB/T 6391-2003
Language: Chinese, Available in English version
Release Date: 2003
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Status: Be replaced 2011-10
Replace By: GB/T 6391-2010
Latest: GB/T 6391-2010

Scope: This standard specifies the calculation method for the basic dynamic load rating of rolling bearings. It is applicable to those whose size range conforms to the relevant national standards, is made of high-quality hardened bearing steel commonly used in contemporary times, and is manufactured according to good processing methods, and the shape of the rolling contact surface is basically Rolling bearings of conventional design. This standard also specifies the calculation method of the basic rating life, which is the life related to 90% reliability, commonly used high-quality materials and good processing quality, and normal operating conditions. In addition, this standard also stipulates the method of calculating the corrected rating life by using the life correction factor considering different reliability, special bearing performance and specific operating conditions. This standard does not apply to structures in which the rolling elements run directly on the shaft or housing surface, unless the surface is equivalent in all respects to the bearing ring (or washer) raceway. Double row radial bearings and double direction thrust bearings in this standard are assumed to be symmetrical structures. Other restrictions on various types of bearings are stated in the relevant clauses.

GB/T 6391-2003 history