Standard No.:	JB/T 6642-2004
Chinese Name:	滚动轴承零件圆度和波纹度误差测量及评定方法
English Name:	Rolling bearing parts—Methods for the measurement and assessment of departure from roundness and waviness
Professional Classification:	J11 Rolling bearing
Professional Classification:	JB Professional Standard - Machinery
ICS Classification:	21.100.20 Rolling bearings
Issued by:
Issued on:	2004-02-10
Implemented on:	2004-06-01
Status:
Replace:	JB/T6642-1993
Language:	English
File Format:	PDF
Word Count:
Price(USD):	please email coc@codeofchina.com for quotation
Delivery:	via email in 1-3 business day

1 Scope
This standard specifies methods for determinating departure from roundness and waviness on the specified position of bearing parts by measuring radius variation with contact-type instrument, and method for assessment of the departure.
This standard is applicable to measurement and assessment for departure from roundness and waviness of finished part products for rolling bearings (3mm~350mm in diameter).
2 Normative References
Provisions of the following documents, through reference in this Standard, constitute provisions of this Standard. For dated reference, subsequent amendments (excluding correction contents) 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 these documents is applicable. For undated references, the latest edition of the normative document is applicable to these specifications.