JB/T 2001.72-1999 This standard is a revision of JB 2075-84 "Types and dimensions of hydraulic servomotors for hydraulic presses". This standard specifies the types and dimensions of hydraulic servomotors. This standard applies to follow-up hydraulic devices composed of various feedback mechanisms and two-valve distributors to control various water system distributors driven by water pump accumulators. This standard does not apply to direct-drive hydraulic presses. The hydraulic servomotors specified in this standard use the same power source as the main control system: nominal pressure 31.5MPa, test pressure 42MPa; nominal pressure 20MPa, test pressure 30MPa. This standard was first issued in 1984. JB/T 2001.72-1999 Types and dimensions of hydraulic servomotors for water systems JB/T2001.72-1999 Standard download decompression password: www.bzxz.net

IC.S$ 23.110
Machinery Industry Standard of the People's Republic of China
JB/T 2001.1~2001.74—1999
Water system assembly and parts1999-06-28 Issued
National Machinery Industry Bureau
2(0-01-U1 Implementation
Machinery Industry Standard of the People's Republic of China
Water system hydraulic servomotor
Type and size
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Technical standard specifies the type and size of pressure servomotorsJB.T 2001.72—1999
JB2075—84
This standard is applicable to various small system distributors that are composed of follow-up hydraulic devices with various anti-rolling mechanisms and resistant distributors to control the pump's business momentum. This standard does not apply to the first-connected transmission hydraulic press. The hydraulic pressure device and the control system of this standard adopt the same power source: nominal pressure 31.5MPa. Test pressure 42MPa nominal 20M, test pressure M
2 Referenced standards
The texts contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the version shown is not valid: all existing standards will be revised, and the user of this standard should explore the possibility of using the latest version of the following standards. JB:2001.251 State 9 Water system distribution valve core (PN-20, 31.5MPa) 3 Type and size||tt| |There are four kinds of maximum torques in the standard, and they are divided into four gears. The most difficult distribution core (1B/T200E.25, that is, the large water inlet valve core, see Table 1. Table
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3.2 water! Card relay group type The type and size are as shown in Figure 1 and Table 2. The Beijing Machinery Industry Bureau approved 254 on June 28, 1999. The most difficult distribution valve core to open is Fengxihang. Yuehaijing IN. Opening force station. 50-~-65. Dynamic Bin type. Water system technology. 2000-01-01 implementation. Patch frame. JB/T 2001.72 2
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JB/T2001.72-1999
B.T2001.72—1999
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