GB/T 275-2015: Rolling bearings - Fits

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Scope

This Standard specifies the basic principles and requirements for the selection of fits
between rolling bearings (hereinafter referred to as “bearings”) and shafts and bearing
pedestal holes under general working conditions.
NOTE. General working conditions refer to the conditions that the host machine has no special
requirements for the rotation accuracy, operation stability, working temperature, etc.
The fits specified in this Standard apply to the following circumstances.
a) the boundary dimension of the bearing complies with GB/T 273.1-2011, GB/T
273.2-2006, GB/T 273.3-2015, and the nominal diameter d ≤ 500 mm;
b) the bearing tolerance complies with Class 0, 6(6X) in GB/T 307.1-2005;
c) the bearing clearance complies with the N group in GB/T 4604.1-2012;
d) the shaft is a solid or thick-walled steel shaft;
e) the bearing pedestal is made of steel or cast iron.
This Standard does not apply to non-inner (outer) ring bearings and bearings for
special purpose (such as aircraft frame bearings, instrument bearings, machine tool
spindle bearings, etc.).

Basic Data

Standard ID	GB/T 275-2015 (GB/T275-2015)
Description (Translated English)	Rolling bearings - Fits
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J11
Classification of International Standard	21.100.20
Word Count Estimation	18,195
Date of Issue	2015-02-04
Date of Implementation	2015-10-01
Older Standard (superseded by this standard)	GB/T 275-1993
Regulation (derived from)	National Standards Bulletin 2015 No. 3
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This Standard specifies the basic principles and requirements of rolling bearings and shaft and the bearing hole with the choice of the general working conditions. With this standard applies to the following conditions: a) bearing dimensions conform GB/T 273.1-2011, GB/T 273.2-2006, GB/T 273.3-2015, and a nominal inside diameter of d��500 mm; bearing tolerances in line with GB/T The 307.1-2005 0, 6 (6X) level; c) the bearing clearance conform GB/T 4604.1-2012 N group in; d) axis is solid or thick-walled steel shaft; e) bearing steel or iron castings. This Standard does not apply to non-inner (outer) ring bearing and special purpose bearing (such as airframe bearings, instrument bearings, machine tool spindle bearings, etc.).