GB/T 20057-2012 English PDF

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GB/T 20057-2012: Rolling bearings -- Single-row cylindrical roller bearings -- Chamfer dimensions for loose rib and non-rib sides
Status: Valid

GB/T 20057: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 20057-2012	134	Add to Cart	3 days	Rolling bearings -- Single-row cylindrical roller bearings -- Chamfer dimensions for loose rib and non-rib sides	Valid
GB/T 20057-2006	199	Add to Cart	3 days	Rolling single row cylindrical roller bearings without ribs rib and ferrule end chamfer dimension	Obsolete

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GB/T 21559.2   GB/T 21559.1   GB/T 16643   GB/T 20058   GB/T 20060   

Basic data

Standard ID: GB/T 20057-2012 (GB/T20057-2012)
Description (Translated English): Rolling bearings -- Single-row cylindrical roller bearings -- Chamfer dimensions for loose rib and non-rib sides
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J11
Classification of International Standard: 21.100.20
Word Count Estimation: 7,731
Older Standard (superseded by this standard): GB/T 20057-2006
Quoted Standard: ISO 15; ISO 582; ISO 5593; ISO 15241
Adopted Standard: ISO 12043-2007, IDT
Regulation (derived from): National Standards Bulletin No. 24 of 2012
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 the ISO 15 in Diameter series 0, 2, 3 and 4 (except dimension series 24) flat ring cylindrical roller bearings without ribs end and ferrule smallest chamfer dimension, the minimum specified in the standard chamfer dimension consist

GB/T 20057-2012: Rolling bearings -- Single-row cylindrical roller bearings -- Chamfer dimensions for loose rib and non-rib sides

---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.
ICS21.100.20 J11 National Standards of People's Republic of China GB/T 20057-2012/ISO 12043.2007 Replacing GB/T 20057-2006 Rolling Cylindrical roller bearings Flat Collar Without Collar and rib end chamfer dimension (ISO 12043.2007, IDT) Issued on. 2013-03-01 2012-09-03 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard rule according to GB/T 1.1-2009 given draft. This standard replaces GB/T 20057-2006 "Rolling single row cylindrical roller bearings without ribs flat collar and ferrule end inverted Square . Inch "Compared with GB/T 20057-2006, in addition to editorial changes, the major technical changes are as follows. --- Increasing the diameter of the Series 4 chamfer dimension (see this edition and the 2006 edition of Table 1); --- Increasing the size of the chamfered portion size segment (see this edition and the 2006 edition of the Table 1). This standard uses the translation method identical with ISO 12043.2007 "Rolling Cylindrical roller bearings without ribs flat collar and ferrule end Chamfer dimension. " Correspondence between the consistency of the standards of international documents and normative references of the following documents. --- GB/T 273.3-1999 Rolling bearings dimensions, general plan (eqvISO 15.1998) --- GB/T 274-2000 Rolling chamfer dimensions Max (idtISO 582.1995) --- GB/T 6930-2002 Rolling vocabulary (ISO 5593.1997, IDT) --- GB/T 7811-2007 Rolling Parameter Symbol (ISO 15241.2001, IDT) 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 eight Central Bearing Co., Ltd., Taizhou UTE Bearing Co., Ltd. The main drafters of this standard. Guobao Xia, cattle Jianping, Zheng Zaixun. This standard replaces the standards previously issued as follows. --- GB/T 20057-2006. GB/T 20057-2012/ISO 12043.2007 Rolling Cylindrical roller bearings Flat Collar Without Collar and rib end chamfer dimension

1 Scope

This standard specifies the ISO 15 diameter series 0, 2, 3 and 4 (except size series 24) Cylindrical Roller Bearings flat collar and no collar stop The minimum size of the chamfer edge side, uniformly minimum chamfer dimensions specified in the standard and ISO 15 regulations.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article Member. For undated references, the latest edition (including any amendments) applies to this document. ISO 15 Rolling bearings dimensions, general plan (Rolingbearings-Radialbearings-Boundary dimensions, generalplan) ISO 582 Rolling maximum chamfer dimensions (Rolingbearings-Chamferdimensions-Maximum values) ISO 5593 Rolling vocabulary (Rolingbearings-Vocabulary) ISO 15241 Rolling Parameter Symbol (Rolingbearings-Symbolsforquantities)

3 Terms and Definitions

ISO 5593 terms and definitions apply to this document defined.

4 Symbol

ISO 15241 is given and the following symbols are applicable to this document. Unless otherwise indicated, the symbols and values \u200b\u200bshown in Table 1 are shown in Figure 1 represents the nominal size. d. inner diameter r1. chamfer dimension r1smin. smallest single chamfer dimension

5 Dimensions

Diameter series 0, 2, 3 and 4 cylindrical roller bearings without ribs flat collar and ferrule end chamfer dimensions are shown in Table 1. For standard design and E- design cylindrical roller bearings, the value listed in Table 1 is valid. Note. For cylindrical roller bearings, E represents the roller and cage assembly to strengthen the design, increase the radial load carrying capacity. GB/T 20057-2012/ISO 12043.2007 ......

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