JB/T 9765.2-1999 This standard is a revision of ZB J92 007-88 "Technical Conditions for Flywheel Bolts for Internal Combustion Engines". During the revision, only editorial changes were made according to relevant regulations, and the main technical content remained unchanged. This standard specifies the technical requirements, inspection methods, inspection rules, marking and packaging of flywheel bolts for internal combustion engines. This standard is applicable to flywheel bolts of reciprocating piston internal combustion engines with a cylinder diameter less than or equal to 200mm. This standard was first issued in 1978 and revised for the first time in 1988. JB/T 9765.2-1999 Technical Conditions for Flywheel Bolts for Internal Combustion Engines JB/T9765.2-1999 Standard download decompression password: www.bzxz.net

rcs27.020
Machinery Industry Standard of the People's Republic of China
IB/T 9765.2-1999
Internal combustion engincs.Flywheel bolts--Specifications1999-09-17 Issued
National Bureau of Machinery Industry
2000-01-01 Implementationwww.bzxz.net
JB/T9765.3-1999
Technical case revision, the original standard was shortened when it was revised. This standard is a revision of J92007--98 "Flywheel bolts for internal combustion engines" on July 1, 2007. The main technical content has not changed. This standard replaces ZEJ92007-88 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Internal Combustion Engines. The unit that initiated this standard is Shanghai Internal Combustion Engine Research Institute. The main drafter of this standard is village.
This standard was first issued in 1978 and revised for the first time in 1988. Machinery Industry Standard of the People's Republic of China
Technical Conditions for Flywheel Bolts for Internal Combustion Engines
Internal Combustion Engine Flywheel Haffs—Specificatious Standards
JB/T9765.2—1999
Daige 2B J92007—8%
This standard specifies the technical requirements, inspection methods, inspection rules and markings, packaging, and other requirements for flywheel bolts for internal combustion engines. This standard applies to flywheel bolts for internal combustion engines with a cylinder diameter of less than 200mm (hereinafter referred to as bolts). 2 Reference Standards
The provisions contained in the following standards constitute the provisions of this standard by citing them in this standard. The versions indicated at the time of publication of this standard are all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest version of the following standards. GBT 90—1985
GB/T 1971981
GE699—1999
CD/T1184—1996
GB/T3077::1988
GBT3098.1--1982
JB.TB837—1999
JB9743—1999
3 Technical requirements
Fastener acceptance inspection, marking and packaging||tt ||Ordinary threaded male stem and matching (diameter 1-355mm) high-quality carbon structure/steel
Shape and position tolerances, tolerance values ​​not indicated
Technical conditions for alloy structural steel
Mechanical properties of fasteners Bolts, screws and studs Metallographic inspection of internal combustion engine connecting rods Coal bolts
Technical conditions for magnetic particle inspection of internal combustion engine connecting bolts 3.1 The bolts shall meet the requirements of the standard and be manufactured according to the product drawings and technical documents approved by the prescribed procedures. 3.2 Explosion bolt material: Generally, 45 steel specified in GB/T699-1999 or 40Ct35CTMDA40MnVB, 40MnB and other alloy steels specified in GB/T3077-1958 are used: other materials with mechanical properties that meet the requirements of 3.3 of this standard may also be used. 3.3 The explosion bolts shall be heat treated, and their tensile strength, adhesive strength and hardness shall be as follows:
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