Standard No.:	GB/T 290-1998
Chinese Name:	滚动轴承 冲压外圈滚针轴承 外形尺寸
English Name:	Rolling bearings—Needle roller bearings,drawn cup without inner rings—Boundary dimensions
Professional Classification:	J11 Rolling bearing
Professional Classification:	GB National Standard
ICS Classification:	21.100.20 Rolling bearings
Issued by:
Issued on:	1998-08-12
Implemented on:	1999-07-01
Status:	ABOLISHED
Replace By:	GB/T290-2017 Rolling bearings—Needle roller bearings with drawn cup and without inner ring—Boundary dimensions
Replace By Date:	2018-05-01
Language:	English
File Format:	PDF
Word Count:
Price(USD):	please email coc@codeofchina.com for quotation
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1 Scope

This Standard specifies the boundary dimensions of diameter series 1 of drawn cup needle roller bearings without inner rings (hereinafter referred to as bearings).
This Standard is applicable to the design, manufacture and user selection of drawn cup needle roller bearings.

2 Symbols and Abbreviated Terms (see Figures 1 and 2)

Fw: Needle roller complement bore diameter;
D: Drawn cup outside diameter;
C: Drawn cup width;
C1: End thickness of profiled end drawn cup;
rs: Single chamfer dimension;
rsmin: Smallest permissible single chamfer dimension;
d0: Oil orifice diameter.