Standard No.:	GB/T 32334-2015
English Name:	Rolling bearings - Matched angular contact ball bearings - Specifications
Chinese Name:	滚动轴承 组配角接触球轴承 技术条件
Professional Classification:	GB    National Standard
Source Content Issued by:	AQSIQ; MOH
Issued on:	2015-12-31
Implemented on:	2016-4-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	9500 words
Translation Price(USD):	280.0
Delivery:	via email in 1 business day

GB/T 32334-2015 Rolling bearings - Matched angular contact ball bearings - Specifications 1 Scope This standard specifies the terms and definitions, symbols, matching types, technical requirements, measurement methods, inspection rules, marking, packaging and fitting of paired and matched angular contact ball bearings (hereinafter referred to as matched bearings) with the overall dimensions meeting the requirements of GB/T 292. This standard is applicable to the production inspection and user acceptance of matched angular contact ball bearings. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 272 Rolling bearings - Identification code GB/T 275 Rolling bearings - Fits GB/T 292 Rolling bearings - Angular contact ball bearings - Boundary dimensions GB/T 307.2 Rolling bearings－Measuring and gauging principles and methods GB/T 307.3 Rolling bearings - General technical regulations GB/T 4199 Rolling bearings - Tolerances - Definitions GB/T 6930 Rolling bearings - Vocabulary GB/T 7811 Rolling bearings - Symbols for physical quantities GB/T 8597 Rolling bearings - Rust proof packaging GB/T 18254 High-carbon chromium bearing steel GB/T 24605 Rolling bearings - Marking for products GB/T 24608 Inspection rules for rolling bearings and commercial parts JB/T 2974 Rolling bearings - Identification code - Supplemental regulations 3 Terms and definitions For the purposes of this document, the terms and definitions specified in GB/T 4199 and GB/T 6930 and the following apply. 3.1 paired bearing a bearing set consisting of two sets of bearings in back-to-back, face-to-face or tandem arrangement, hereinafter referred to as paired bearing 3.2 matched bearing sets a bearing set consisting of three or more sets of bearings in such mode as back-to-back, face-to-face or tandem arrangement 3.3 universally matchable bearings bearings in back-to-back, face-to-face or tandem arrangement, which can be changed in position at will 3.4 preload certain load pre-imposed on the matched bearings to generate a "negative clearance" in the bearings, so to increase the bearing rigidity, also known as preload 3.5 pre-clearance certain clearance preset in bearings in back-to-back or face-to-face arrangement, also known as preset clearance 3.6 stand (stickout) axial distance between the end faces of two rings at the back end face or the front end face of a single set of bearing in matched bearings 4 Symbols For the purposes of this document, the symbols given in GB/T 7811 and the following apply. b: ring stand on the back end face of a single set of bearing in matched bearings

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols 5 Matching types of bearings 6 Technical requirements 7 Measurement methods 8 Inspection rules 9 Marking 10 Packaging 11 Fitting Annex A (Normative) Class 4A and 2A tolerances Annex B (Informative) Preload of paired bearing Annex C (Informative) Fitting of matched bearings with tolerance of Class 5 and above with shaft and bearing housing hole