This standard specifies the basic dimensions of belts and pulleys for flat belt drives. GB/T 11358-1999 Dimensions and tolerances of flat belts and pulleys for belt drives GB/T11358-1999 Standard download decompression password: www.bzxz.net

1CS 21. 220. 10
National Standard of the People's Republic of China
GB/T11358—1999
eqv IS0 22:1991
Belt drives
Flat belts and pulleys
Dimensions and tolerances
Belt drives-Flal transmission belts and corresponding pulleys-Dimensions and tolerances
Issued on September 3, 1999
Implemented on March 1, 2000
Issued by the State Administration of Hydraulic Measurement Technology
GB/T11358—1999
This standard is equivalent to IS022:19912 "Belt drives-Flat belts and pulleys-Dimensions and tolerances". This standard promotes, amends and replaces GB/T11355-1989 belt drive belt width and pulley width, GB/T11359-1989 flat belt drive pulley width and GB/T11360-1989 flat belt drive pulley width. Different from the previous standards, this standard uniformly stipulates the length, width, pulley width and diameter of flat belts, and stipulates the flange convex size in the specification. Taking into account the actual use, the maximum width of the belt and pulley is consistent with the original national standard, which is 50mm and 63mm respectively, which is different from the ISO standard that stipulates 500mm and 560mm. Similarly, the pulley diameter has three more sizes than the TS standard, 29mm, 25mm and 32mm. This standard will replace GR/T11358-1989 from the date of implementation. Technical standards are followed by the addition of the following sections A and B. This standard was proposed by the National Bureau of Machinery Industry. This standard was initiated by the Machinery Industry Standardization Research Institute: The originating units of this standard are the Machinery Industry Standardization Research Institute and Jifu Tianqi Special Flat Belt Co., Ltd. The main originators of this standard are Qin Shuan and Wu Shanglao, and the relevant countries. This standard is issued by the Machinery Industry Standardization Research Institute. GR/T11358-1999 ISO Foreword The International Organization for Standardization (ISO) is a worldwide association of national standards bodies (ISOs) of various countries. The work of formulating international standards is usually carried out by technical committees. Each ISO member interested in a particular subject of an established technical committee has the right to participate in the work of the ISO. ISO and the International Electrotechnical Commission (IFC) maintain close cooperation in all aspects of the international standardization: the draft of the international standard adopted by the technical committee must be sent to all 1SU members for voting. The draft is published as an international standard, and the voting rate of ISC members is 7%. International Standard 1SU22 is a draft of the SC1V belt of the ISO/1C41 Technical Committee (including V belts). The second edition of the standard cancels and replaces the first edition 1SO22:973 and ISO63:197516099:19711SO130:1334. It has made major technical modifications to the first edition.
Appendices A and B of this international standard are included as references. The National Standard of the People's Republic of China
Dimensions and tolerances of flat belts and pulleys
Belt drives
Belt drlvesFlat transmission heltsand corresponding pullcysDimensions and tolerances
F Range
also specifies the dimensions of flat transmission belts and pulleys. 2 Reference standards GB/T11358-1995 eq 180 22:1991 GB/T11358-1995 eq 180 22:1991 GB/T11358-1995 eq 180 22:1991 GB/T11358-1995 eq 180 22:1991 GB/T11358-1995 eq 180 22:1991 GB/T11358-1995 eq 180 22:1991 GB/T11358-1995 eq 180 22:1991 GB/T11358-1995 eq 180 22:1991 GB/T11358-1995 eq 180 22:1991 GB/T11358-1995 eq 180 22:1991 GB/T11358-1995 eq 180 22:1991 GB/T11358-1995 eq 180 22:1991 GB/T11358-1995 eq 180 22:1991 GB/T11358-1995 eq 180 22:1991 Table 1 Length classification
Inferior series
5 cIG:
If the listed length is not enough, the two ends of the series can be connected to GB/21-48 R5 series to expand, or the two lengths of G321-12 series to
2 If the length is too long, you can remove one part of the belt length and connect them at the node. The length can be adjusted to the nearest full length. Approved by the National Quality and Technical Supervision Bureau in 1999, implemented on 2000-03-01
3.2 Bandwidth
The basic dimensions and tolerances of bandwidth are shown in Table 2.
Dimensions
4 Pulleys
4.1 Pulley width
Basic dimensions and tolerances of pulley width are shown in Table 3..
Basic dimensions
4.2 Diameter
GH/T11358—1999
Basic dimensions and tolerances of pulley widthbzxz.net
Basic dimensions
Table 3 Basic dimensions and tolerances of pulley width
Basic dimensions
The pulley diameter refers to the pulley diameter D measured at the symmetrical half of the outer surface of the belt (see Figure A1). The basic dimensions and tolerances of pulley diameters are shown in Table 4.
Basic wood dimensions
CE/T 1135B-1999
Table 4 Pulley diameter
±Product 6
Basic dimensions
41 Crown shape
GB/T11358—1999
Appendix A
《Appendix A of the channel》
The crown of the pulley is a regular double curve. There is a section of the belt in the middle (see Figure A1). And: a) The straight part is tangent to the velvet:
b) The width of the straight part is not less than 4. Figure A Pulley crown
A2 Crown height
The crown height varies with the different pulley diameters (for large diameter pulleys, the wheel core is also related to the wheel width). This crown height value is also related to the warp material of the belt.
A2.1 When the pulley diameter is 25mm to 710mm, the pulley height value is shown in Table A1. Table A2 Pulley diameter 2) mm% 710mm inch crown height value crown diameter
125140
15G0180
560710
A2.2 When the pulley diameter is 800mm to 2000mm, the pulley height value is shown in Table A2.1
GB/T11358—1999
Pulley 2 crown value
Pulley diameter
11XG1 4D
Appendix
(Appendix for recommendation)
Corresponding relationship between flat belt and pulley width
B Recommended belt width corresponding relationship is shown in Table 1. B Belt pulley width corresponding relationship
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