JB/T 8025-1999 Lifting bolts for machine tool fixture parts and components

JB/T 8025-1999 This standard is a revision of JB/T 8025-95 "Lifting bolts for machine tool fixture parts and components". During the revision, only editorial changes were made according to relevant regulations, and the technical content remained unchanged. This standard specifies lifting bolts with thread specifications of M12~M48. This standard was first issued in 1981 as GB 2225-80, first revised to GB/T 2225-91 on April 30, 1991, and adjusted to JB/T 8025-95 in April 1996. JB/T 8025-1999 Lifting bolts for machine tool fixture parts and components JB/T8025-1999 Standard download decompression password: www.bzxz.net

ICS 25. 080. 01
Machinery Industry Standard of the People's Republic of China
The parts and units of jigs and fixtures
The parts and units of jigs and fixtures1999-08-06Promulgated
State Bureau of Machinery Industrywww.bzxz.net
Implementation on 2000-01-01
1 Scope
Machinery Industry Standard of the People's Republic of China
Parts and units of jigs and fixturesLifting bolt
This standard specifies lifting bolts with thread specifications of M12~M48. 2 Reference standards
JB/T8025—1999
Replace JB/T8025—1995
The following standards contain provisions that constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T699-1988 Technical conditions for high-quality carbon structural steel JB/T8044—1999 Technical requirements for machine tool fixture parts and components 3 Dimensions
The dimensions are shown in the following figure and table.
Approved by the State Machinery Industry Bureau on 1999-08-06 182
Appropriate accessory dimensions
Diagram accessory dimensions:
2000-01-01 implementation
Basic dimensions
Limit deviation
Basic dimensions
Limit deviation h6
Allowable load N
Basic dimensions
Limit deviation H7
4 Technical conditions
4.1 Material: 45 steel in accordance with GB/T699. 4.2 Heat treatment: T215.
4.3 Other technical conditions in accordance with JB/T8044. 5 Marking
5.1 Marking example:
d-M12 type A lifting bolt:
bolt AM12JB/T8025-1999
JB/T8025-1999
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