This standard specifies the technical conditions for hydraulic axial piston pumps. This standard applies to hydraulic axial piston pumps with hydraulic oil or other mineral oils of equivalent performance as the working medium and a rated pressure of ≤40MPa. JB/T 7043-1993 Technical conditions for hydraulic axial piston pumps JB/T7043-1993 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T7043-1993
Hydraulic Axial Piston Pump
Published on September 23, 1993
Technical Conditions
Implemented 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 Axial Piston Pump
1 Subject Content and Scope of Application
Technical Conditions
This standard specifies the technical conditions for hydraulic axial piston pumps. JB/T7043-1993
This standard applies to hydraulic axial piston pumps with hydraulic oil or other mineral oils of equivalent performance as the working medium and a rated pressure of ≤40MPa.
Cited standards
GB2340
GB2347
GB2828
GB2878
GB7935
JB/T5058
JB/T7042
JB/JQ20502
3 Terms
3.1 Rated pressure
Hydraulic and pneumatic graphic symbols
Hydraulic and pneumatic systems and components
Nominal pressure series
Nominal displacement series of hydraulic pumps and motors Column
Dimension series and marking of mounting flanges and shaft extensions for hydraulic pumps and motors (I) Count sampling procedures and sampling tables for batch inspection (applicable to inspection of continuous batches) Hydraulic and pneumatic systems and components Oil and gas port connection thread sizes General technical conditions for hydraulic components
Guidelines for the importance classification of quality characteristics of mechanical industry products Test methods for hydraulic axial piston pumps
Test methods for internal cleanliness of hydraulic components
Part II
Weighing method (trial implementation)
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 Maximum pressure
The maximum output pressure allowed for short-term operation. 3.4 Rated speed
The highest nominal speed that can ensure the design life under rated pressure and specified oil inlet conditions. 3.5 Displacement
The volume of liquid discharged per revolution of the pump shaft.
3.6 No-load displacement
Displacement measured at no-load pressure.
3.7 Nominal displacement
Nominal displacement of the product.
Approved by the Ministry of Machinery Industry on September 23, 1993
Implemented on July 1, 1994
Rated working conditions
JB/T70431993
Working conditions at maximum displacement, rated pressure and rated speed. Technical requirements
General technical requirements
The nominal pressure series shall comply with the provisions of GB2346. The nominal displacement series shall comply with the provisions of GB2347. 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. 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 the introduced products and old products shall comply with relevant regulations. 4.2 Performance in Use
4.2.1 Displacement
The maximum no-load displacement shall be within the range of 95%~110% of the nominal displacement. 4.2.2 Volumetric Efficiency and Total Efficiency
Under rated conditions, the volumetric efficiency and total efficiency shall comply with the provisions of Table 1. Table 1
Slant Plate Piston Pump
Nominal Displacement mL/r
Volumetric Efficiency
Total Efficiency
10≤V25
25V250
Note: The above table is only for fixed displacement pump indicators. The variable displacement pump indicators are 1 percentage point lower than those of fixed displacement pumps with the same displacement. 4.2.3
Self-priming Performance
The self-priming capacity shall comply with the provisions of Table 2.
Slant plate piston pump
Self-priming capacity (vacuum degree)
Variable characteristics
The characteristics of various variable mechanisms should meet their respective design requirements. Noise
Noise values ​​should meet the requirements of Table 3 or Table 4.
a. The noise index of the slant plate piston pump is shown in Table 3. Table 3
Nominal displacement V
>10-25
Slant axis piston pump
10≤V25
25V250
Slant axis piston pump
>25~63
>63~250
b. The noise index of the slant axis piston pump is shown in Table 4. Nominal displacement V
Sound dB (A)
Low temperature performance
In the low temperature test, there is no abnormality.
4.2.7High temperature performance
In the high temperature test, there is no abnormality.
4.2.8Overspeed performance
In the overspeed test, there is no abnormality.
4.2.9Overload performance
JB/T70431993
>25-80
In the overload test, there is no abnormality within the specified time. 4.2.10Impact resistance
In the impact test, there is no abnormality within the specified number of impacts. 4.2.11
Full load performance
In the full load test, there is no abnormality within the specified time. 4.2.12 Sealing performance
>80~180
In the external leakage inspection test, the static seal shall not leak oil, and the dynamic seal shall not drip oil within 4 hours. 4.2.13 Durability
4.2.13.1 Durability test Choose one of the following schemes: a. Full load test for 2400h;
b, overload test for 1000h, overload test for 10h, impact test for 100,000 times; c. Overload test for 250h, impact test for 100,000 times. >180~250
4.2.13.2 After the durability test, the volumetric efficiency shall not decrease by more than 3 percentage points; parts shall not have abnormal wear and other forms of damage.
4.3 Processing quality
According to the provisions of JB/T5058, the importance level of processing quality characteristics shall be divided. The qualified quality level (AQL value) is as specified in Articles 6.2.3.1 and 6.2.3.2.
4.4 Assembly quality
The technical requirements for component assembly shall comply with the provisions of Articles 1.5 to 1.8 of GB7935. 4.4.1 Air tightness
During the air tightness test, there shall be no leakage. 4.4.2 Internal cleanliness
The detection method shall comply with the provisions of JB/JQ20502. The quality of the dirt in the inner cavity shall comply with the provisions of Table 5. 3
Appearance requirements
Displacement V
>10~63
>63~160
>160~250
JB/T 70431993
Appearance requirements shall comply with the provisions of Articles 1.9 and 1.10 of GB79355
Test method
According to the provisions of JB/T7042.
Inspection rules
Inspection classification
Product inspection is divided into type inspection and factory inspection. 6.1.1
Type inspectionbZxz.net
Dirty mass
≤120
≤180
≤250
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 is conducted in any of the following cases:
a. Pre-production and identification 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, periodic inspection is conducted regularly (usually every 5 years) or after a certain amount of production is accumulated; d. When the product is resumed after a long period of suspension; when the factory inspection results are significantly different from the previous type inspection results; e.
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 conducted on each product when it is delivered. Sampling
The sampling plan for batch products shall be in accordance with GB2828. 6.2.1
Type test inspection:
a.Qualified quality level (AQL value): 2.5; b, sampling plan type: one normal sampling plan; c. Sample size: 5 units.
Note: The number of samples for durability test may be reduced as appropriate. 6.2.2
Internal cleanliness inspection
a.Qualified quality level (AQL value): 2.5; b, sampling plan type: two normal sampling plans; inspection level: general inspection level II.
6.2.3 Parts processing quality inspection
6.2.3.1 Key characteristics (A level):
a. Qualified quality level (AQL value): 1.0; JB/T 70431993
b, Sampling plan type: two normal sampling plan; c. Inspection level: general inspection level II. 6.2.3.2 Important characteristics (B level):
a. Qualified quality level (AQL value): 6.5; b. Sampling plan type: two normal sampling plan; c. Inspection level: general inspection level II. 6.3 Judgment rules
According to GB2828.
6.3.1 Sampling plan for the first time
According to the results of sample inspection, if the number of unqualified products found in the sample is less than or equal to the qualified determination number, it is judged as qualified; if the number of unqualified products found in the sample is greater than or equal to the unqualified determination number, it is judged as unqualified. Sampling plan for the second time
According to the results of sample inspection, if the number of unqualified products found in the first sample is less than or equal to the first qualified determination number, it is judged as qualified. If the number of unqualified products found in the first sample is greater than or equal to the first unqualified determination number, it is judged as unqualified. If the number of unqualified products found in the first sample is greater than the first qualified determination number and less than the first unqualified determination number, the second sample is selected for inspection. If the sum of the number of unqualified products found in the first sample and the second sample is less than or equal to the second qualified determination number, it is judged as qualified. If the sum of the number of unqualified products found in the first sample and the second sample is greater than or equal to the second unqualified determination number, it is judged as unqualified. 7 Marking, packaging, transportation and storage
Marking, packaging, transportation and storage shall comply with the provisions of Articles 1.9, 1.11 and Chapter 3 of GB7935. Additional notes:
This standard was proposed by the National Hydraulic and Pneumatic Standardization Technical Committee and drafted by the Beijing Institute of Automation of the Ministry of Machinery Industry. The main drafters of this standard are Peng Ping, Yin Guohui and Zhu Peihua. People's Republic of China
Mechanical Industry Standard
Technical Conditions for Hydraulic Axial Piston Pumps
JB/T 70431993
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)
Word Count 10.000
Format 880×1230
1/16 Sheet 1/2
First Edition in May 1994
First Printing in May 1994
Print Quantity 1-500
Price 3.00 Yuan
Mechanical Industry Standard Service Network: http://www.JB.ac.cn66_
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