Standard No.:	GB/T 25769-2010
English Name:	Rolling bearings - Measuring methods for radial internal clearance
Chinese Name:	滚动轴承 径向游隙的测量方法
Chinese Classification:	J11    Rolling bearing
Professional Classification:	GB    National Standard
ICS Classification:	21.100.20 21.100.20    Rolling bearings 21.100.20
Issued by:	AQSIQ; SAC
Issued on:	2010-12-23
Implemented on:	2011-6-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	60.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the measuring methods for the radial internal clearance of deep groove ball bearing, self-aligning ball bearing, cylindrical roller bearing, needle roller bearing and self-aligning roller bearing. This standard is applicable to the measurement of the radial internal clearance of rolling bearing (hereinafter referred to as "bearing"). 2 Normative References The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding corrections to), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies. GB/T 4199-2003 Rolling Bearings - Tolerances - Definitions (ISO 1132-1: 2000, MOD) GB/T 4662-2003 Rolling Bearings - Static Load Ratings (ISO 76: 1987, IDT) JB/T 8788-1998 Feeler Gauge JJF 1089-2002 Calibration Specification for Instruments for Measuring Radial Clearance of Rolling Bearing

Contents Foreword I 1 Scope 2 Normative References 3 Measuring Principles of Radial Internal Clearance 4 Preparation before Measurement 5 General Specification for Measuring Apparatus 6 Measurement of Radial Internal Clearance of Deep Groove Ball Bearing 7 Measurement of Radial Internal Clearance of Self-aligning Ball Bearing 8 Measurement of Radial Internal Clearance of Cylindrical Roller and Needle Roller Bearings 9 Measurement of Radial Internal Clearance of Self-aligning Roller Bearing