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Rolling bearings -- Double row cylindrical roller bearings -- Boundary dimensions
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Basic data
| Standard ID | GB/T 285-2013 (GB/T285-2013) |
| Description (Translated English) | Rolling bearings -- Double row cylindrical roller bearings -- Boundary dimensions |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | J11 |
| Classification of International Standard | 21.100.20 |
| Word Count Estimation | 9,940 |
| Older Standard (superseded by this standard) | GB/T 285-1994 |
| Quoted Standard | GB/T 272-1993; GB/T 273.3-1999; GB/T 274-2000; GB/T 6930-2002; JB/T 2974-2004 |
| Regulation (derived from) | National Standards Bulletin No. 19 of 2013 |
| Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China |
| Summary | This standard specifies: Dimensions comply with GB/T 273. 3-1999- double row cylindrical roller bearings (hereinafter referred to as the bearings) Dimensions. This standard applies to: double row cylindrical roller bearings design and selection. |
GB/T 285-2013: Rolling bearings -- Double row cylindrical roller bearings -- Boundary dimensions
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Rolling bearings. Double row cylindrical roller bearings. Boundary dimensions
ICS 21.100.20
J11
National Standards of People's Republic of China
Replacing GB/T 285-1994
Rolling double row cylindrical roller bearings
Dimensions
Issued on. 2013-09-18
2014-06-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 285-1994 "Rolling double row cylindrical roller bearings dimensions." And GB/T 285-1994
Compared to, in addition to editorial changes, the major technical changes are as follows.
--- Increasing the bearing roller set nominal value of the inner diameter and outer Fw Ew (see Table 1 to Table 4);
--- Expanding the NNU 49 series bearing type size range (see Table 1 and Table 3 of the 1994 edition);
--- Increase the NNU 41 series bearing type dimensions (see Table 2);
--- Remove the hole with a double row cylindrical roller bearings and model structure diagram (see the 1994 edition of FIGS. 5 to 8, Table 1 to Table 3);
--- Remove the old code control (see the 1994 edition of Appendix A).
The standard proposed by China Machinery Industry Federation.
This standard by the National Standardization Technical Committee of Rolling (SAC/TC98) centralized.
This standard was drafted. Luoyang Bearing Research Institute Co., Ltd., Zhejiang gifted special Bearing Co., Ltd., Fujian Yongan Bearing Co., Ltd. Company
Secretary, Shandong Province Yu Jie Bearing Manufacturing Co., Ltd., Shandong Camry Bearing Technology Co., Ltd.
The main drafters of this standard. Guobao Xia, Zheng Zixun, Cai Binghua, Caimei Gui, Ren Qinghua.
This standard replaces the standards previously issued as follows.
--- GB 285-1964, GB 285-1981, GB 285-1987, GB/T 285-1994.
Rolling double row cylindrical roller bearings
Dimensions
1 Scope
This standard specifies the dimensions in line with GB/T 273.3-1999 double row cylindrical roller bearings (hereinafter referred to as bearing) shape
size.
This standard applies to double row cylindrical roller bearings in the design and selection.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 272-1993 Rolling Code Method
GB/T 273.3-1999 Rolling bearings dimensions, general plan
GB/T 274-2000 Rolling maximum chamfer dimensions
GB/T 6930-2002 Rolling Words
Supplementary Provisions JB/T 2974-2004 Rolling Code Method
3 Terms and Definitions
Terms and definitions GB/T 6930-2002 defined apply to this document.
4 Symbol
The following symbols apply to this document.
Unless otherwise indicated, the value shown in Figs. 1 to 4 and the symbol shown in Tables 1 to 4 are represented nominal size.
NOTE. Graphics only example of the structure.
B. Bearing width
D. Bearing outside diameter
d. bearing bore
Ew. the outer diameter of the roller set
Fw. inner diameter of the roller set
r. bearing inner and outer ring chamfer dimensions
rsmin. r smallest single chamfer dimension
...
