JB/T 8026.4-1999 Machine tool fixture parts and component adjustment supports

JB/T 8026.4-1999 This standard is a revision of JB/T 8026.4-95 "Adjustable supports 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 adjustable supports with thread specifications of M5~M36. This standard was first issued in 1981 as GB 2230-80, first revised to GB/T 2230-91 on April 30, 1991, and adjusted to JB/T 8026.4-95 in April 1996. JB/T 8026.4-1999 Adjustable supports for machine tool fixture parts and components JB/T8026.4-1999 Standard download decompression password: www.bzxz.net

ICS 25. 080. 01
Standard of the Machinery Industry of the People's Republic of China
Parts and units of jigs and fixtures
The parts and units of jigs and fixtures1999-08-06 Issued
State Machinery Industry Bureau
Implementation on 2000-01-01
Standard of the Machinery Industry of the People's Republic of China
Parts and units of jigs and fixturesAdjustable supporters
This standard specifies the adjustable support with thread specifications of M5~M36. Referenced StandardswwW.bzxz.Net
JB/T 8026.4—1999
Replaces JB/T8026.4—1995
The provisions contained in the following standards 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. 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 August 6, 1999 190
Implementation on January 1, 2000
Basic dimensions
Limit deviation
JB/T8026.4-1999
Technical conditions
4.1 Material: 45 steel in accordance with the provisions of GB/T699. JB/T 8026.4—1999
4.2 Heat treatment: L≤50mm all 40~45HRC; L>50mm head 40-45HRC. 4.3 Other technical conditions shall comply with the provisions of JB/T8044. 5 Marking
5.1 Marking example:
d-M12, L=50mm adjustment support:
Support M12×50JB/T8026.4—1999
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