Standard No.:	GB/T 7810-2017
English Name:	Rolling bearings―Insert bearing units―Boundary dimensions
Chinese Name:	滚动轴承 带座外球面球轴承 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
Issued by:	MOHURD and AQSIQ
Issued on:	2017-05-12
Implemented on:	2017-12-1
Status:	valid
Superseding:	GB/T 7810-1995 Rolling bearings－Insert bearing units-Boundary dimensions
Language:	English
File Format:	PDF
Word Count:	18500 words
Price(USD):	550.0
Delivery:	via email in 1 business day

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 7810-1995 Rolling bearings—Insert bearing units—Boundary dimensions and the following main technical changes have been made with respect to GB/T 7810-1995: ——Some normative references are added and modified (see Clause 2 hereof; Clause 2 of Edition 1995); ——"Terms and definitions" and "Code" are added (see Clauses 3 and 6 hereof); ——B3 dimensions of H3 series adapter sleeves for series 2 insert bearing units with adapter sleeves are added (see Table 1, Table 3, Table 5, Table 7 and Table 8); ——Boundary dimensions of some insert bearing units are modified (see Tables 1 to 11 hereof, Tables 1 to 11 of Edition 1995); ——Dimension ranges of some insert bearing units are expanded (see Tables 1, 3, 5, 7, 8, 10, and 12 to 15); ——The height L of bearings with flanged round housings is added (see Table 7); ——The code of bearings with take-up housings is modified (see Figures 13 to 15, Table 8 hereof, Figures 13 to 15, Table 8 of Edition 1995); ——The boundary dimensions of bearings with F200 square housings are added (see Annex B); ——The boundary dimensions of bearings with FL200 oval housing are added (see Annex C). This standard was proposed by the 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 7810-1987, GB/T 7810-1995. Rolling bearings—Insert bearing units—Boundary dimensions 1 Scope This standard specifies the boundary dimensions of insert bearing units (bearing units for short). It applies to insert bearings with plummer block housings, flanged housings, take-up housings and ring housings. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 3882 Rolling bearings—Insert bearings and eccentric looking collars—Boundary dimensions GB/T 6930 Rolling bearings—Vocabulary GB/T 7809 Rolling bearings—Insert bearings—Boundary dimensions GB/T 7811 Rolling bearings—Symbols for physical quantities GB/T 27554 Rolling bearings—Insert bearing units—Identification code 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 6930 apply. 4 Symbols 4.1 General For the purposes of this document, the symbols given in GB/T 7811 and the following apply. The symbols shown in Figures 1 to 25 and given in Tables 1 to 15, Table B.1 and Table C.1 denote nominal dimensions, unless specified otherwise. Note: Figures 1 to 25 are drawn schematically and do not necessarily show all design details. The grease nipple positions in Figures 1 to 17 are examples. Other positions are at the discretion of the manufacturer. B: width of inner ring of bearing units B1: overall width of inner ring of bearing units including eccentric locking collar B3: width of adapter sleeve d: bore diameter of bearing units and of eccentric locking collar d0: bore diameter of adapter sleeve S: distance from centre of raceway to face of inner ring on side opposite locking device 4.2 Bearings with plummer block housings A: (overall) width of base H: distance from mounting base to centreline of spherical seating diameter of housing J: centre distance between bolt holes L: (overall) length of base 4.3 Bearings with square housing A: (overall) height A2: distance from mounting base to centreline of spherical seating diameter of housing J: centre distance between bolt holes L: (overall) length 4.4 Bearings with oval housing A: (overall) height A2: distance from mounting base to centreline of spherical seating diameter of housing H: height of flange J: centre distance between bolt holes L: (overall) width 4.5 Bearings with flanged round housings A: width A2: distance from mounting base to centreline of spherical seating diameter of housing D1: boss diameter D2: outside diameter of housing J: centre distance between bolt holes L: boss height 4.6 Bearings with take-up housings A: (overall) width (attachment end) A1: width of location slot H: (overall) height H1: distance between bottoms of location slots L: (overall) length L1: distance from attachment arm end surface to centreline of spherical seating diameter of housing 4.7 Bearings with ring housings A: width D1: outside diameter of housing 4.8 Bearings with pressed plummer block housings A: (overall) width of base H: distance from mounting base to centreline of spherical seating diameter of housing J: centre distance between bolt holes L: (overall) length of base 4.9 Bearings with pressing round housings A: (overall) height A1: width of flange H: length J: pitch circle diameter of bolt hole 4.10 Bearings with pressed triangular housings A: (overall) height A1: width of flange H: length H1: distance from straight edge to centreline of spherical seating diameter of housing J: pitch circle diameter of bolt hole 4.11 Bearings with pressed oval housings A: (overall) height A1: width of flange H: length J: centre distance between bolt holes L: (overall) width of flange 5 Types The bearing units given in this standard is a combination of the insert bearing specified in GB/T 3882 and the housings for insert bearings specified in GB/T 7809. The correspondence between them is shown in Annex A, and the types are as follows: ——Bearings with plummer block housings (see Figures 1 to 3); ——Bearing with square housings (including bearing with F200 square housings) (see Figures 4 to 6); ——Bearing with oval housings (including bearing with FL200 oval housings) (see Figures 7 to 9); ——Flanged round housings (see Figures 10 to 12); ——Bearings with take-up housings (see Figures 13 to 15); ——Bearings with ring housings (see Figures 16 to 17); ——Bearings with pressed plummer block housings (see Figures 18 to 19); ——Bearings with pressed round housings (see Figures 20 to 21); ——Bearings with pressed triangular housings (see Figures 22 to 23); ——Bearings with pressed oval housings (see Figures 24 to 25).

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols 5 Types 6 Code 7 Designation example 8 Boundary dimension Annex A (Informative) ——Correspondence between insert bearing unit and bearing and bearing housing Annex B (Normative) Boundary dimensions of bearings with F200 square housing Annex C (Normative) Boundary dimensions of bearings with FL200 oval housing