JB/T 8008.4-1999 JB/T 8008.4-1999 Machine tool fixture parts and components Rotating washers JB/T8008.4-1999 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 fixturesTurning washerwwW.bzxz.Net
This standard specifies turning washer with a nominal diameter of 5~36 mm. 2 Referenced standards
JB/T8008.4-1999
Replaces JB/T8008.4—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. Technical conditions for high-quality carbon structural steel
GB/T699—1988
Technical requirements for machine tool fixture parts and components
JB/T8044-—1999
3 Dimensions
The dimensions are shown in the following figure and table.
Approved by the State Machinery Industry Bureau on August 6, 1999 54
Implementation on January 1, 2000
Nominal diameter
(climbing diameter)
4 Technical conditions
4.1 Material: 45 steel in accordance with the provisions of GB/T699. 4.2 Heat treatment: 35~40HRC.
4.3 Other technical conditions in accordance with the provisions of JB/T8044. 5 Marking
5.1 Marking example:
JB/T8008.4-1999
Basic dimensions
Type A rotating pad with nominal diameter = 8mm, r-22mm: Washer A8×22JB/T8008.4—1999
Limit aberration H11
Basic dimensions
Limit deviation
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