Standard No.:	JB/T 6640-2007
English Name:	Rolling Bearings- Specifications of Vibration (Acceleration) for Deep Groove Ball Bearings
Chinese Name:	滚动轴承 带座外球面球轴承 代号方法
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:	6-Mar-07
Implemented on:	2007-9-1
Status:	valid
Superseding:	JB/T 6640-1993
Language:	English
File Format:	PDF
Word Count:	2000 words
Price(USD):	344.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the compilation methods for the codes of insert bearing units (hereinafter referred to as “bearing units”) and the bearing units with accessories. This standard is applicable to bearing units for general purpose. 2 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding corrections 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. GB/T 272-1993 Rolling Bearing-Identification Code GB/T 7810-1995 Rolling Bearings-Insert Bearing Units-Boundary Dimensions JB/T 2974-2004 Rolling Bearings-Identification Code-Supplemental Regulations JB/T 5303-2002 Insert Bearing Units-Supplementary Structure-Boundary Dimensions JB/T 5304-2007 Rolling Bearings-Insert Bearings-Radial Internal Clearance

Contents Foreword I 1 Scope 2 Normative References 3 Code Composition of Bearing Units 4 Bearing Unit with Accessories