This standard specifies the technical conditions for hydraulic vane pumps. This standard applies to hydraulic vane pumps that use hydraulic oil or other mineral oils with equivalent performance as the working medium. JB/T 7039-1993 Technical conditions for hydraulic vane pumps JB/T7039-1993 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T7039-1993
Hydraulic Vane Pump
Published on September 23, 1993
Technical Conditions
Implementation on July 1, 1994
Ministry of Machinery Industry of the People's Republic of China
Mechanical Industry Standard of the People's Republic of China
Hydraulic Vane Pump
1 Subject content and scope of application
This standard specifies the technical conditions for hydraulic vane pumpsTechnical conditions
This standard applies to hydraulic vane pumps that use hydraulic oil or other mineral oils with equivalent performance as the working medium. 2
Cited standards
GB2346
GB2347
GB2828
GB2878
GB7935
GB7936
JB/T5085
JB/T7040
JB/JQ20502
3 Terms
3.1 Rated pressure
Hydraulic and pneumatic systems and components Nominal pressure series Hydraulic pumps and motors Nominal displacement series
Hydraulic pumps and motors Dimension series and marking of mounting flange and shaft extension (I) Inspection by batch counting sampling procedure and sampling table (applicable to inspection of continuous batches) Hydraulic and pneumatic systems and components Oil and gas port connection thread size General technical conditions for hydraulic components
Method for determining no-load displacement of hydraulic pumps and motors Guidelines for classification of importance of quality characteristics of mechanical industry products Hydraulic vane pump test method
Method for testing internal cleanliness of hydraulic components
Weighing method (trial implementation)
Part II
Continuous operation within the specified speed range and the highest output pressure that can ensure the design life. 3.2 No-load pressure
Output pressure not exceeding 5% of the rated pressure or 0.5MPa. 3.3 Rated speed
The highest speed that can ensure the design life under the rated pressure and specified oil inlet conditions. 3.4 Minimum speed
The minimum speed allowed to maintain a stable output rated pressure. 3.5 Displacement
The volume of liquid discharged per revolution of the pump shaft.
3.6 No-load displacement
The actual displacement measured at no-load pressure. 3.7 Output characteristic curve
The relationship curve between output flow and output pressure. 3.8 Cut-off pressure
Approved by the Ministry of Machinery Industry on September 23, 1993
JB/T 7039 - 1993
Implemented on July 1, 1994
JB/T7039-1993
The pressure on the rated output characteristic curve that makes the output flow zero. 3.9 Hysteresis
On the output characteristic curve, the ratio of the maximum value of the difference between the two pressures that produce the same flow to the cut-off pressure, expressed as a percentage. 3.10 Inflection point
The point on the output characteristic curve where the slope changes the most. 4 Technical requirements
4.1 General technical requirements
4.1.1 The nominal pressure series shall comply with the provisions of GB2346. 4.1.2
The nominal displacement series shall comply with the provisions of GB2347. 4.1.3 The installation connection dimensions shall comply with the provisions of GB2353.1. The oil port connection thread dimensions shall comply with the provisions of GB2878. 4.1.4
Other technical requirements shall comply with the provisions of Articles 1.2 to 1.4 of GB7935. Note: The installation connection dimensions and oil port thread dimensions of introduced products and old products shall comply with relevant regulations. 4.2 Performance
4.2.1 Air tightness
During the air tightness test, there shall be no leakage. 4.2.2 Displacement
The no-load displacement shall be within the range of 95% to 110% of the nominal displacement. 4.2.3 Self-priming
Unless otherwise specified, the vacuum value shall not be less than 16kPa. 4.2.4 Volumetric efficiency and total efficiency
Under rated pressure (70% cut-off pressure for variable pump) and rated speed, the volumetric efficiency and total efficiency shall not be lower than the requirements in Table 1.
Rated pressure
Volumetric efficiency
Total efficiency
Volumetric efficiency
Total efficiency
Volumetric efficiency
Total efficiency
4.2.5 Pressure swing
The pump outlet pressure swing value shall not exceed ±0.2MPa. External leakage
a. Static seal: no oil leakage;
≤100
≤200
≤400
Dosed pump
Variable pump
b. Dynamic seal: no oil leakage.
4.2.7 Noise
JB/T7039-1993
Under rated pressure (70% cut-off pressure for variable pump) and rated speed, the noise value shall not exceed the provisions of Table 2. Table 2
Rated pressure
4.2.8 Hysteresis
≤ 10
The hysteresis of variable vane pump should be less than 10%.
4.2.9 High and low temperature performance
≤ 63
≤100
, no abnormal phenomenon in the tested pump.
During the high and low temperature test
4.2.10 Overspeed
During the overspeed test, the tested pump has no abnormal phenomenon. 4.2.11 Durability
The durability test scheme can be selected from one of the following schemes. 4.2.11.1
a. Continuous full load test for 3000h;
≤160
b. After continuous overload test for 600h (variable pump test for 100h), impact test for 100,000 timesc. After continuous overload test for 360h, impact test for 300,000 times. Note: Variable pump is only selected in scheme a and b. ≤200
≤400
dB（A)
Dosed pump
Variable pump
2After the durability test, the volumetric efficiency decrease value shall not exceed 3 percentage points; parts shall not have abnormal wear or other forms of damage. 4.2.11.2
4.3Processing quality
The importance level of the quality characteristics of processing shall be divided according to the provisions of JB/T5085. 4.3.2Processing technical requirements shall meet the requirements of the drawings. 4.4Assembly quality
Assembly technical requirements
Component assembly technical requirements shall comply with the provisions of Articles 1.5 to 1.8 of GB7935. 4.4.2Internal cleanliness
Inspect the internal cleanliness of the component according to the provisions of JB/JQ20502. The mass of the dirt particles in the inner cavity shall not exceed the provisions of Table 3. Table 3
Nominal displacement V
>10~50
>50~100
>100~200
Note: For variable displacement pumps, the values ​​in the table are increased by 20% of the dirt mass
4.5 Appearance requirements
JB/T 7039 -1993
Appearance requirements shall comply with the provisions of Articles 1.9~1.10 of GB7935. 5 Test methods
According to the provisions of JB/T7040.
Inspection rules
6.1 Inspection classification
Product inspection is divided into type inspection and factory inspection. 6.1.1 Type inspection
Type inspection refers to the comprehensive assessment of product quality, that is, comprehensive inspection according to the technical requirements specified in the standard. Type inspection shall be carried out in any of the following situations. a. Preliminary evaluation of new products or old products for transfer to factory production; b. After formal production, if there are major changes in structure, materials, and processes that may affect product performance; c. During normal production, regular inspections (usually 5 years) or after a certain amount of accumulated production should be carried out periodically; d. When the product is resumed after a long period of suspension; e. When there is a significant difference between the results of the factory inspection and the results of the last type test; f. When the national quality supervision agency proposes a type inspection requirement. 6.1.2 Factory Inspection
Factory inspection refers to the various tests that must be carried out when the product is delivered. 6.2 Sampling
The sampling plan for batch products shall be in accordance with the provisions of GB2828. Performance Inspection
a.AQL value: 4.0;
b, Sampling plan type: normal sampling plan once; c. Sampling size: 5 units.
Note: The number of samples for durability testing can be reduced if necessary. 6.2.2 Assembly quality inspection
a. AQL value: 2.5;
b. Sampling plan type: one normal sampling plan; c. Inspection level: special inspection level S-2. 6.2.3 Parts processing quality inspection
6.2.3.1 Key characteristics (A level)
a. AQL value: 1.0;
b. Sampling plan type: two normal sampling plans; c. Inspection level: general inspection level II. 6.2.3.2 Important Characteristics (Grade B)
a. AQL value: 6.5;
JB/T7039-1993
b, Sampling plan type: secondary normal sampling plan; c. Inspection level: special inspection level II. 6.3 Judgment rules
According to the provisions of GB2828.
6.3.1 Primary sampling plan
According to the results of sample inspection, if the number of unqualified (non-conforming products) found in the sample is less than or equal to the qualified judgment number, it is judged as qualified; if the number of unqualified (non-conforming products) found in the sample is greater than or equal to the unqualified judgment number, it is judged as unqualified. 6.3.2 Secondary sampling plan
According to the results of sample inspection, if the number of unqualified (non-conforming products) found in the first sample is less than or equal to the first qualified judgment number, it is judged as qualified. If the number of unqualified (non-conforming products) found in the first sample is greater than or equal to the first unqualified judgment number, it is judged as unqualified. If the number of unqualified (unqualified products) found in the first sample is greater than the first qualified judgment number and less than the first unqualified judgment number, the second sample is selected for inspection. If the sum of the number of unqualified (unqualified products) found in the first and second samples is less than or equal to the second qualified judgment number, it is judged to be qualified. If the sum of the number of unqualified (unqualified products) found in the first and second samples is greater than or equal to the second unqualified judgment number, it is judged to be unqualified.
7 Marking, packaging, transportation and storage
Marking, packaging, transportation and storage shall comply with the provisions of Article 1.9, Article 1.11 and Chapter 3 of GB7935. Additional remarks:
This standard is proposed by the National Hydraulic and Pneumatic Standardization Technical Committee. This standard is under the jurisdiction of the Beijing Institute of Automation of the Machinery Industry of the Ministry of Machinery Industry. This standard is drafted by the National Hydraulic Components Quality Supervision and Inspection Center. The main drafters of this standard are Yin Guohui, Zhu Peihua and Peng Ping. 5
People's Republic of China
Mechanical Industry Standard
Technical Conditions for Hydraulic Vane Pumpswww.bzxz.net
JB/T7039-1993
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Postal Code 100044)
Format 880×1230
Sheet 1/2
Word Count 10.000
First Printing in May 1994
First Edition in May 1994
Print Quantity 1-500
Price 3.00 Yuan
Mechanical Industry Standard Service Network: http://www.JB.ac.cn2661 - 650
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