Detail of GB/T 4663-2017

Introduction of GB/T 4663-2017

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 4663-1994 Rolling bearings - Cylindrical thrust roller bearings - Boundary dimensions. In addition to editorial changes, the following main technical changes have been made with respect to GB/T 4663-1994: ——the Clauses - "Terms and Definitions" and "Codes" are added (see Clauses 3 and 5); ——the types and dimensions of part of Series 11 of the single-direction cylindrical thrust roller bearings are added (See Table 1 of the 1994 edition); ——structural types and boundary dimensions of the double-direction cylindrical thrust roller bearings are added (see Figure 2 and Table 3); ——“Comparison of New and Old Bearing Codes” is deleted (see Annex A of the 1994 edition). This standard was proposed by China Machinery Industry Federation. This standard is under the jurisdiction of the National Technical Committee on Rolling Bearing of Standardization Administration of China (SAT/TC 98). The previous editions of this standard are as follows: ——GB/T 4663-1984 and GB/T 4663-1994. Rolling bearings - Cylindrical thrust roller bearings - Boundary dimensions 1 Scope This standard specifies the boundary dimensions of single-direction and double-direction cylindrical thrust roller bearings. This standard is applicable to the design and type selection of single-direction and double-direction cylindrical thrust roller bearings. 2 Normative references The following documents for the application of this document are essential. Any dated reference, just dated edition applies to this document. For undated references, the latest edition of the normative document (including any amendments) applies. GB/T 272 Rolling bearing - Identification code GB/T 274 Rolling bearings - Chamfer dimension - Maximum values GB/T 6930 Rolling bearings - Vocabulary 3 Terms and definitions The terms and definitions given in GB/T 6930 apply. 4 Symbols For the purposes of this document, the following symbols apply. Unless otherwise stated, the symbols shown in Figures 1 and 2 and the values given in Tables 1 to 3 denote nominal dimensions. D: the outside diameter of the housing washer D1: the bore diameter of the housing washer D1smin: the minimum single bore diameter of the housing washer d: the bore diameter of bearing ring, single-direction bearing d1: the outside diameter of bearing ring, single-direction bearing d1smax: the maximum single outside diameter of the bearing ring d2: the bore diameter of the central washer, double-direction bearing d3: the outside diameter of the central washer, double-direction bearing r: the back-face chamfer dimension of the bearing ring (single-direction bearing) and the housing washer rsmin: the back-face minimum single chamfer dimension of the bearing ring (single-direction bearing) and the housing washer r1: the face chamfer dimension of the central washer r1smin: the minimum single face chamfer dimension of the central washer T: the height of the single-direction bearing T1: the height of the double-direction bearing 5 Designations Designations given in GB/T 272 are applicable to this document. 6 Markings Example of marking: Rolling bearings 81100 GB/T 4663-2017. 7 Boundary dimensions 7.1 The boundary dimensions of the single-direction cylindrical thrust roller bearings are in accordance with the requirements of Tables 1 and 2.  

Contents of GB/T 4663-2017

Foreword I 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols 5 Designations 6 Markings 7 Boundary dimensions