Standard No.:	GB/T 299-2008
English Name:	Rolling bearings - Double row tapered roller bearings - Boundary dimensions
Chinese Name:	滚动轴承 双列圆锥滚子轴承 外形尺寸
Chinese Classification:	J11    Rolling bearing
Professional Classification:	GB    National Standard
ICS Classification:	21.100.20 21.100.20    Rolling bearings 21.100.20
Source Content Issued by:	AQSIQ; SAC
Issued on:	2008-2-28
Implemented on:	2008-8-1
Status:	superseded
Superseded by:	GB/T 299-2023
Superseded on:	2023-12-1
Superseding:	GB/T 299-1995 Rolling bearings―Metric double row tapered roller bearings―Boundary dimensions
Target Language:	English
File Format:	PDF
Word Count:	3000 words
Translation Price(USD):	264.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the boundary dimensions of double row tapered roller bearings. This standard is applicable to double row tapered roller bearings and is used for the bearing manufacturer's design and the customer's type selection. 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 editions of these documents are applicable. For undated references, the latest edition of the normative documents referred to applies. GB/T 273.1-2003 Rolling Bearings - Tapered Roller Bearing - Plan of Boundary Dimensions (ISO 355: 1977, MOD) ISO 355: 2007 Rolling Bearings - Tapered Roller Bearings - Boundary Dimensions and Series Designations 3 Symbols (See Figure 1)

Foreword I 1 Scope 2 Normative References 3 Symbols 4 Boundary Dimensions 5 Designation Example Appendix A (Normative) Boundary Dimensions of Parts of Bearings in ISO 355: 2007