This standard specifies the type and size, basic parameters, technical requirements, test methods, inspection rules, marking, packaging and storage of manual ultra-high pressure oil pumps. The high-pressure pumps specified in this standard are suitable for disassembly and assembly of hydraulic interference joints, hydraulic bolt preloaders, hydraulic nuts, hydraulic jacks, hydraulic regulators, pressure piece calibration, high-pressure vessel pressure testing, static pressure devices and other pressure sources. Its working medium is viscosity grade N32 hydraulic oil, and the working temperature is -20℃~80℃. JB/T 7554-1994 Manual Ultra-High Pressure Oil Pump JB/T7554-1994 Standard Download Decompression Password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T7554-94
Manual Ultra-High Pressure Oil Pump
Issued on December 9, 1994
Ministry of Machinery Industry of the People's Republic of China
Implementation on October 1, 1995
Mechanical Industry Standard of the People's Republic of China
Manual Ultra-High Pressure Oil Pump
1 Subject content and scope of application
JB/T7554-94
This standard specifies the type and size, basic parameters, technical requirements, test methods, inspection specifications, marking, packaging and storage of manual ultra-high pressure oil pumps (hereinafter referred to as high-pressure pumps).
The high-pressure pump specified in this standard is suitable for disassembly and assembly of pressure-reducing interference fit connections, hydraulic bolt preloaders, filter nuts, hydraulic jacks, hydraulic regulators, pressure element calibration, pressure test of high-pressure vessels, static pressure devices and other pressure sources. Its working medium is hydraulic oil with viscosity grade N32, and its working temperature is -20℃~+80℃.
2 Reference standards
GB4879
GB7935
GB/T 13384
JB/T6996
Packaging, storage and transportation pictorial signs
Rust-proof packaging
General technical conditions for hydraulic components
General technical conditions for packaging of electromechanical products
General technical conditions for heavy machinery hydraulic systems 3 Types, basic parameters and main dimensions
3.1 The type, size and basic parameters of GYBA high pressure pumps shall comply with the provisions of Figure 1 and Table 1. 3.2 The type, size and basic parameters of the GYBB high-pressure pump shall comply with the provisions of Figure 2 and Table 2. 3.3 The type, size and basic parameters of the GYBC high-pressure pump shall comply with the provisions of Figure 3 and Table 3. 3.4 The type, size and basic parameters of the GYBD high-pressure system shall comply with the provisions of Figure 4 and Table 4. 3.5 Model Description
3.6 Marking Example
Connection thread code:
Nominal pressure
Pipe thread not marked
Ordinary fine thread - M
Angle bracket type
B-Direct body type
Type code
C-Horizontal type
[D-Portable type
Ultra-high pressure oil pump
Example 1 Triangular ultra-high pressure oil pump with a nominal pressure of 315MPa: GYBA315 high pressure system JB/T7554-94
Example 2 Ultra-high pressure drip pump with a nominal pressure of 250MPa directly screwed into the body: GYBB250 high pressure pump JB/T7 554-94
Example 3 Horizontal ultra-high pressure oil ticket with nominal pressure of 160MPa: GYBC160 high pressure pump JB/T7554-94
Example 4 Nominal pressure of 80MPa, connecting thread M14×1.5 portable ultra-high pressure oil pump: GYBD80M high pressure pump JB/T7554-94
Approved by the Ministry of Machinery Industry on December 9, 1994
Implemented on October 1, 1995
Nominal mass
Maximum pressure
Oil injection per stroke ml
Pre-acting arm force
Pre-scenting
GYBA315
JB/T 7554-94
GYBA250
GYBA160
GYBA80
Nominal pressure
Maximum pressure
Oil injection volume per stroke mL
Manual force
Feed pipe
GYBB315Www.bzxZ.net
JB/T 755494
GYBB250
GYBB160
GYBB80
Inch of screw hole R of combustible joint
Nominal pressure
Maximum pressure
Oil flow per stroke mL
Manual arm force
Nominal pressure
Maximum pressure
Injection volume per stroke
Manual arm force
Technical requirements
GYBC315
Oil delivery bone
JB/T 7554-94
GYBC250
Connector hole size
GYBD160
GYBC160
Products should meet the requirements of this standard and be manufactured according to drawings and technical documents approved by the prescribed procedures. GYBC80
GYBD80
JB/T 755494
4.2 The test pressure of the pump shall not be less than 1.25 times the nominal pressure, and the time shall be 5 minutes (maintaining pressure). 4.3 The cleanliness level of the working medium shall comply with 17/14 in Appendix A of JB/T6996. 4.4 The pressure drop tolerance within 5 minutes of tax pressure is 0.5MPa4.5 There shall be no irregularities such as seepage and damage to military parts in all parts. 4.6 The ratio of actual oil injection per stroke to theoretical oil injection shall not be less than 95%. 5 Test method
5.1 Factory test
5.1.1 No-load test: Start reciprocating more than 2 times under no-load pressure conditions, and then start measuring the oil injection amount. The measured oil injection amount per stroke shall not be less than 95% of the nominal oil injection amount.
5.1.2 Full-load test: Start reciprocating more than 2 times under nominal pressure conditions, and then start measuring the oil injection amount. The volumetric efficiency shall meet the requirements of Article 4.6.
5.1.3 Overload test; gradually increase the pressure to 1.25 times of the nominal pressure, and no abnormal phenomenon shall occur. 5.2 Type test
5.2.1 Test conditions shall be in accordance with Article 2.5 of GB7935. 5.2.2 Test items
5.2.2.1 Running-in test: start reciprocatingly for more than 10 times under no-load pressure conditions, then gradually load, run-in in stages, to the nominal pressure, and then reciprocate for more than 5 times.
5.2.2.2 Low temperature test: start more than 2 times under no-load pressure, -20°C or below conditions, and no abnormal phenomenon shall occur. 5.2.2.3 High temperature test: start more than 2 times under nominal pressure, +80°C or above conditions, and no abnormal phenomenon shall occur. 5.2.2.4 Overload test: gradually increase the pressure to 1.25 times of the nominal pressure, and test continuously for more than 10 times, and no abnormal phenomenon shall occur. 6 Inspection rules
6.1 Each high-pressure pump shall be inspected and qualified by the inspection department of the manufacturer and shall be accompanied by a product certificate before it can leave the factory. 6.2 The factory inspection of high-pressure pumps must comply with the provisions of Articles 4.2, 4.4, and 5.1. 7 Marking, packaging, and storage
7.1 The high-pressure pump shall be equipped with a product label in a conspicuous position, including: manufacturer name:
product name and model:
trademark;
factory date:
e. product number.
7.2 The rust prevention and packaging of the high-pressure system shall comply with the provisions of GB4879 and GB/T13384. 7.3 The packaging mark of the high-pressure pump shall comply with the provisions of GB191. 7.4 Storage
7.4.1 The high-pressure ticket shall be stored in a dry and ventilated environment, avoiding rain, snow, and water infiltration, avoiding contact with acids, oxidants, organic solvents and other substances, and shall not be exposed to light for a long time.
7.4.2 In compliance with Article 7.4.1, the manufacturer shall ensure that the performance of the product still complies with the provisions of this standard within 12 months from the date of release.
Additional Notes:
JB/T7554-94
This standard was proposed and coordinated by the Xi'an Heavy Machinery Research Institute of the Ministry of Machinery Industry, and the Second Heavy Machinery Plant was responsible for the reform of this standard. The main drafter of this standard was Zhao Baoyu.
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