JB/T 2001.73-1999 45° serrated thread profile and basic dimensions for water systems

JB/T 2001.73-1999 This standard is a revision of JB 2076-84 "45° serrated thread profile and basic dimensions for hydraulic presses". This standard specifies the 45° serrated thread profile and basic dimensions. This standard applies to 45° serrated threads for press columns. This standard was first published in 1984. JB/T 2001.73-1999 45° serrated thread profile and basic dimensions for water systems JB/T2001.73-1999 Standard download decompression password: www.bzxz.net

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Machinery Industry Standard of the People's Republic of China
JB/T 2001.1~2001.74—1999
Water system assembly and parts
Water system assembly and parts1999-06-28 Issued
State Machinery Industry Bureau
2(-01-U1 Implementation
Machinery Industry Standard of the People's Republic of China
Water System 45° Sawtooth Thread
Tooth Type and Basic Size
Watersystem—45dcgrceyaw-toothhrcadToothpaflernandbasicsize
The standard specifies the type and basic size of 45° serrated thread. This standard applies to 45° serrated thread for mechanical vertical use. 2 Type and size
2.1 According to the provisions of Figure 1 and Table 1.
2.1 Basic size According to the provisions of Table 2:
National Accessories
Foreign Control
IB21.73—199
Generation Police 2074
JI-r e-0.25 2-0.02 +0.[6 h-0.575 1 -0.1751 /vJ~0.51 1,-eu.25?Figure 1
Explosion height
Tooth filling
Using the same school chain
Guodong Machinery Industry Bureau 1009-06-28 approved fear
Root business degree
Tooth width
fi fi4
Return angle required diameter
2000-11-01 implementation
JB/T2001.731999
Inner and outer butterfly drive
External stroke
Internal thread
External effect and station
3 Marking and example
JE/T200J.73-1999
Table 21 end)www.bzxz.net
Inner and outer effect
External coiling
11385:3| |tt||3.1 The 45° sawtooth thread for hydraulic presses is indicated by the letters "YS diameter × pitch/number of threads, spiral direction". The number of threads does not need to be indicated for single-thread threads, and the spiral direction is not indicated for non-threaded threads.
3.2 Marking indication
Example 1: The outer diameter of the screw is 250mm, the pitch is Bmm, the left-handed single-thread staggered thread: Y5250×SJB/T2001.73-1999
Example 2: The outer diameter of the screw is 300mm, the pitch is 10mm, the right-handed single-thread serrated thread: YS 300x10JB2001.73-1999
3: The outer diameter of the screw is 520mm, the pitch is 20, and the right-handed single-thread serrated thread: YS 520x20JB.T2001731999
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