JB/T 8013.2-1999 This standard specifies the thin-walled drill bushings with a specification of 0.5~7mm. This standard was first issued in 1991 as GB/T 12873-91. JB/T 8013.2-1999 Thin-walled drill bushings for machine tool fixture parts and components JB/T8013.2-1999 Standard download decompression password: www.bzxz.net

IC5 28.060.41
Standard of the Machinery Industry of the People's Republic of Chinawww.bzxz.net
Parts and components of jigs and fixtures
The parts and units of jigs and fixtures1999-08-06 Issued
National Bureau of Machinery Industry
Implementation on 2000-01-01
Standard of the Machinery Industry of the People's Republic of China
Parts and components of jigs and fixtures
Thin wall drill bushings
This standard specifies the thin drill bushing with a size of 0.5~7mm. 2 Referenced standards
JBT8013.2—1999
The following standards contain the texts, and the referenced texts in the non-standards are the provisions of this standard. The published and revised versions of this standard are valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the next edition of the standard. GB12186 Technical Conditions for Tool Steel
B8044-[9 State Technical Requirements for Machine Tool Parts and Components 3 Dimensions
The dimensions are shown in the following figure and table.
National Machinery Industry Bureau approved 1999-08-16 128
2100-01-01 implementation
: The tolerance is determined by the design
4 Technical conditions
JB/T8013.2—[999
4.1 Material: CTMn according to the provisions of GB299
4.2 Heat treatment: 5862HR core
4.3 Other technical conditions according to the provisions of JB/T8044: 5 Marking
5.1 Marking example:
L=6mm, thin drill with L=12m:
set 6×12JB/T 8013.2—199
Network deviation
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