JB/T 9157-1999 JB/T 9157-1999 Installation dimensions of ball expansion plugs for hydraulic and pneumatic applications JB/T9157-1999 Standard download decompression password: www.bzxz.net

10.S23.100.3
Machinery Industry Standard of the People's Republic of China
JB/T9157-1999
Hydraulic fluid power-Bal expansion type plug--Mounting dimensions
Published on 1999-06-28
National Machinery Industry Week
2U-01-01 Implementation
JB/T9157-1999
This standard replaces 2BJ22007-88 from the date of implementation. Appendix A of this standard is a reminder appendix.
This standard was proposed by the National Fluid Pressure and Pneumatic Standardization Technical Committee and is drafted by: This standard was drafted by: Fluid E Research Institute, Shanghai Branch, General Coal Research Institute. Scope
Machinery Industry Standard of the People's Republic of China
Hydraulie fluid power-Ball expansion plugMounting dimensions
Hydraulie fluid power-Ball expansion plugMounting dimensionsbzxz.net
This standard specifies the installation dimensions of pneumatic ball expansion plugs. This standard is used for hydraulic and pneumatic system components with a pressure of 0MPa. 3 Ball expansion plug types and installation dimensions
2.1 Ball expansion plug types
The types of ball expansion plugs are shown in the table.
1.2 Ball expansion plug installation dimensions
The installation dimensions of the joint expansion plug are shown in Table 1. Table!
Approved by the State Machinery Industry Bureau on June 28, 1999 5.5
JB/T 9157-1999
Implemented on January 1, 2000
3 Sealing hole structure and size
3.1 Sealing structure
The sealing structure is shown in Figure 2.
3.2 Sealing hole size
The size of the sealing hole is shown in Table 2.
JB/T 9i57-t999
A! Sealing hole materials and processing technology
AI.! Sealing hole materials
a) Dongkou cast iron, spherical cast iron;
JBT9157-I5
Appendix A
(Appendix to the specification)
Instructions for use
b) Steel or alloy steel with anti-bending strength up to 1000MPa and hardness ≤250HH: e);
d, the strength combination will be,
4 1. 2 Sealing chaos, plus 1. 1, process
after drilling the hole.
A2 Installation and removal method description
A2.1 Installation method description
a) The surface of the plugging hole should be kept away from oil or grease: i) Fold the plug and use the hand wrap and a suitable punch to press the steel ball into the head: e) The minimum wall thickness of the plugging hole shall not be less than the plug diameter: If the thickness is less than the plug diameter, a test string should be carried out. A2.2 Gradual removal method
The hardness of the steel ball of the ball expansion plug is less than 40HRC. The head needs to be removed: it can be drilled out with a carbide drill bit. When the diameter is greater than 6mm, it can be enlarged in several times.
43 Applicable temperature range
The applicable overflow range of the ball expansion plug is -40-00,
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