Standard No.:	JB/T 5301-2007
English Name:	Rolling bearings-Carbon steel balls
Chinese Name:	滚动轴承 碳钢球
Chinese Classification:	J11    Rolling bearing
Professional Classification:	JB    Professional Standard - Machinery
ICS Classification:	21.100.20 21.100.20    Rolling bearings 21.100.20
Issued by:	NDRC
Issued on:	2007-03-06
Implemented on:	2007-9-1
Status:	abolished
Abolished on:	2024-07-11
Superseding:	JB/T 5301-1991
Language:	English
File Format:	PDF
Word Count:	2000 words
Price(USD):	194.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the dimension, tolerance grade and the technical specifications of carbon steel ball. This standard is applicable to the manufacture, inspection and user acceptance of commercial carbon steels used for carbon steel bearings or other purposes. 2 Normative References The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.

Contents Foreword I 1 Scope 2 Normative References 3 Term and Definitions 4 Symbols 5 Dimension 6 Technical Requirements 6.1 Material 6.2 Heat Treatment 6.3 Tolerance Grade 6.4 Geometrical Shape and Surface Roughness 6.5 Sorting Tolerance and Ball Gauge Value 6.6 Residual Magnetism 6.7 Appearance 7 Measurement and Inspection Methods 7.1 Tolerance 7.2 Surface Roughness 7.3 Heat Treatment 7.4 Residual Magnetism 7.5 Crushing Load 7.6 Appearance 8 Inspection Rules 9 Marking, Packaging and Storage 9.1 Marking 9.2 Packaging 9.3 Storage