SNP3NN/048RN07SAP1BBBAZZNN/NNNNN SNM3NN SNM SNP SNP3NN SKP1NN SNP2NN High Pressure Internal Gear Pump
| Model Number | SNP3NN/048RN07SAP1BBBAZZNN/NNNNN |
|---|
Product Description
SNP3NN/048RN07SAP1BBBAZZNN/NNNNN Hydraulic Pump SNM3NN SNM SNP SNP3NN SKP1NN SNP2NN High Pressure Internal Gear Pump
Basic specifications
Type: External Meshing fixed displacement gear pump, SNP3NN series, displacement 48cc/rev (corresponding to “048” in the model)
Rated pressure: 250bar, short-term peak up to 280bar, suitable for medium and high-pressure hydraulic systems
Rated speed: 1800-2000r/min, minimum stable speed ≥800r/min, maximum allowable 3000r/min
Theoretical flow rate: approximately 86.4L/min (displacement × rated speed ÷1000), volumetric efficiency ≥90%, total efficiency ≥80%
Power requirement: approximately 36kW (under 250bar and 1800r/min conditions), and the recommended motor power is ≥45kW
Drive mode: Standard splined shaft connection, shaft diameter approximately 42mm, capable of withbearing radial force ≤6000N
Installation method: Flange type (ISO standard), oil inlet G2.5 internal thread, oil outlet G2 internal thread, oil drain G1 internal thread
Weight: Approximately 38kg (excluding accessories), external dimensions: approximately 420×300×280mm, compact structure
Hydraulic system adaptation
Applicable oil: L-HM 46/68 anti-wear hydraulic oil, viscosity range 15-400mm²/s, recommended 20-50mm²/s
Operating temperature: -20℃ to 80℃, ideal operating temperature 50±5℃, continuous operation is recommended to be controlled within 40-65℃
Oil cleanliness: ISO 4406 18/15 grade. A 100-mesh oil filter is required for return oil and a 60-mesh oil filter for intake oil
Protection grade: IP65, suitable for dust and liquid jet environmentsIi. Working Principle
Working mechanism of external gear pump
Core structure
It is composed of a pair of intermeshing gears (driving wheel and driven wheel), pump body, front and rear pump covers and shaft seals
The driving gear is connected to the power source through the drive shaft, and the driven gear rotates by the meshing relationship
The two gears form a sealed working chamber with the pump body, which is separated into the oil suction chamber and the oil pressure chamber by the meshing line
Oil absorption process
The driving gear drives the driven gear to rotate in the specified direction, and the teeth on the suction chamber side gradually disengage from meshing
The volume of the inter-tooth seal increases, creating a local vacuum (pressure lower than atmospheric pressure).
Under the action of atmospheric pressure, the oil in the fuel tank enters the space between the teeth through the oil suction port and fills the tooth groove space
Oil pressing process
The gear continues to rotate, and the oil is carried to the pressure oil chamber by the tooth grooves
On the side of the oil pressure chamber, the gear teeth gradually engage, and the volume between the teeth decreases
The oil pressure rises, and the high-pressure oil is discharged into the system through the oil outlet
Traffic formation
Each time the gear rotates one circle, each tooth groove completes one cycle of oil suction and oil pressure
The displacement of a pump is determined by the gear module, the number of teeth and the tooth width, and it is a fixed value (a characteristic of a fixed displacement pump).
The output flow rate is directly proportional to the rotational speed and is independent of the working pressure (ignoring the influence of leakage).
Features of the SNP3NN series
It adopts high-precision gear pairs, with the tooth surfaces hardened (hardness HRC58-62), providing excellent wear resistance
The optimized bearing design can withstand high radial and axial loads
The SAP1 control system (the “SAP1” part in the model) provides pressure compensation function. When the system pressure exceeds the set value, it automatically reduces the flow rate to protect the system
Iii. Product Features and Advantages
1. High-pressure stability performance
High working pressure: Continuous working capacity of 250bar, short-term peak of 280bar, meeting the high-pressure requirements of construction machinery and other applications
Stable flow output: Within the rated speed range, the flow fluctuation is controlled within ±3% to ensure the smooth operation of the actuator
High efficiency: Volumetric efficiency ≥90%, total efficiency ≥80%, small energy conversion loss, and 10-15% more energy-efficient than ordinary gear pumps
2. Structural and reliability advantages
High-strength design: The pump body is made of ductile iron, and the gear surface is hardened, providing excellent wear resistance. The average mean time between failures is ≥ 12,000 hours
Multiple sealing protection: It adopts a combined shaft seal structure, which can withstand a back pressure of ≤5MPa, effectively preventing leakage and extending service life
Strong impact resistance: It can adapt to working conditions with drastic load changes in construction machinery and other equipment, has good anti-vibration performance, and is suitable for harsh working environments
Wide adaptability: It has strong adaptability to oil viscosity and temperature, and can operate stably under a wide range of working conditions
3. Convenience of use
Easy installation: Standard flange and shaft extension design, compatible with various drive devices, reducing installation and adjustment time
Low maintenance cost: Simple structure, easy to disassemble and assemble, and regular maintenance can be carried out by general maintenance personnel
Good economic performance: Compared with plunger pumps of the same specification, its price is 40-50% lower, offering high cost performance and suitable for application scenarios with limited budgets
Strong compatibility: It can be used in conjunction with a variety of hydraulic valve components and auxiliary components, with a high degree of system integration
Iv. Usage Functions and Purposes
Core functions
Convert the mechanical energy of the prime mover (motor, engine) into hydraulic energy to provide stable high-pressure oil for the hydraulic system
As the power source of the hydraulic system, it drives the actuating elements such as hydraulic cylinders and hydraulic motors to achieve linear or rotational motion
Precisely control the pressure and flow of the hydraulic system to meet the working requirements under different working conditions
It can be used as an auxiliary pump in the hydraulic circuit to provide oil replenishment, lubrication or pressure control
Main application fields
Construction machinery
The main hydraulic system of excavators and loaders provides the power required for excavation and loading (pressure 200-250bar, flow rate 60-80L/min)
The hydraulic systems of the traveling and working devices of bulldozers and rollers ensure operational efficiency
The hoisting, luffing and slewing systems of the crane provide stable power output
The hydraulic control system for the transmission of construction machinery realizes gear shifting and torque transmission
Industrial hydraulic system
The main system of the hydraulic press (500-2000 tons grade) provides high-pressure oil required for pressing
Hydraulic power units for metal processing equipment (such as shearing machines and bending machines)
The clamping and injection systems of injection molding machines and die-casting machines ensure the accuracy and efficiency of molding
Agricultural machinery
The hydraulic suspension system of large tractors controls the lifting of farm tools and the depth of tillage
The header, conveying and threshing system of the combine harvester ensure efficient and smooth harvesting
The pressurization system of farmland irrigation equipment provides stable water pressure
Other applications
Ship deck machinery (such as anchor winches and winches), suitable for harsh Marine environments
Hydraulic systems of port machinery (such as forklifts and stackers)
The power source for hydraulic tools (hydraulic wrenches, hydraulic jacks)
V. Applicable Machines and Scenarios
1. Typical applicable machines
20-30 ton class excavators
The main hydraulic system has a pressure of 200 to 250bar and a flow rate of 60 to 80L/min
It is used to control the movements of the boom, bucket arm and bucket, requiring the pump to respond quickly (<50ms) and maintain stable pressure
100-200 horsepower tractor
The pressure of the hydraulic suspension system is 180-210bar, and the flow rate is 50-70L/min
Control the lifting and lowering of large agricultural tools and the depth of cultivation, adapt to different farmland conditions, and require stable flow and strong anti-pollution ability
Medium-sized hydraulic press (500-1000 tons)
The pressure of the main hydraulic system is 230-250bar, and the flow rate is 70-90L/min
To provide the power needed for pressing, the pump is required to work continuously and stably under high pressure with high efficiency
Cranes of 30-50 tons class
The pressure of the hoisting and luffing system is 220-250bar, and the flow rate is 60-80L/min
To ensure the smooth lifting and precise positioning of heavy objects, it is required that the pump output be stable and reliable
2. Characteristics of applicable scenarios
Main systems of construction machinery that require high pressure and large flow rate: pressure 180-250bar, flow rate 50-90L/min, such as excavators, cranes, etc
A working environment with frequent load changes
During the operation of construction machinery, the load varies greatly, which requires the pump to have good impact resistance and stability
Agricultural machinery operates under different soil conditions and requires pumps to be able to adapt to pressure fluctuations
Applications with extremely high reliability requirements:
Cranes, deck machinery of ships and other equipment operate at heights or at sea. Once they malfunction, it may cause serious consequences
The pump is required to have a long mean time between failures (≥ 12,000 hours) and a long maintenance interval
Devices with limited space but requiring high power:
The pump has a compact structure (420×300×280mm) and a moderate weight (38kg), making it suitable for construction machinery with limited installation space
The output power per unit volume is high, with a power density 15-20% higher than that of similar products
Cost-sensitive but performance-demanding applications:
Compared with plunger pumps, it is 40-50% cheaper and can meet the performance requirements of most construction machinery at the same time
It is suitable for users with limited budgets but certain requirements for the reliability and performance of the equipment
Six. Similar models
1. Different specifications and models of the same series
SNP3NN/033:
Displacement: 33cc/rev, rated pressure: 250bar, rated speed: 2000r/min
The theoretical flow rate is approximately 66L/min, and the power demand is about 27kW. It is suitable for medium-sized construction machinery and industrial hydraulic systems
SNP3NN/055:
Displacement: 55cc/rev, rated pressure: 230bar, rated speed: 1800r/min
The theoretical flow rate is approximately 99L/min, and the power demand is about 41kW. It is suitable for large-scale construction machinery and heavy-duty hydraulic systems
SNP3NN/022:
Displacement: 22cc/rev, rated pressure: 250bar, rated speed: 2500r/min
The theoretical flow rate is approximately 55L/min, and the power demand is about 23kW. It is suitable for small construction machinery and auxiliary hydraulic systems
2. Gear pumps of the same type but different brands
CBG Series (a certain brand)
CBG2080: Displacement 80ml/r, pressure 200bar, rotational speed 2000r/min, flow rate approximately 133L/min. It is suitable for large-scale construction machinery
CBG3160: Displacement 160ml/r, pressure 200bar, rotational speed 1800r/min, flow rate approximately 240L/min. It is suitable for heavy machinery hydraulic systems
CBT Series (a certain brand)
CBT-E314: Displacement 14ml/r, pressure 200bar, rotational speed 2500r/min, flow rate approximately 35L/min, suitable for small excavators and loaders
CBT-F532: Displacement 32ml/r, pressure 250bar, rotational speed 2000r/min, flow rate approximately 53L/min, suitable for medium-sized construction machinery
PGP Series (a certain brand) :
PGP505A0033: Displacement 33ml/r, pressure 275bar, rotational speed 2500r/min, flow rate approximately 70L/min. It is suitable for high-pressure industrial hydraulic systems
PGP511A0080: Displacement 80ml/r, pressure 275bar, rotational speed 2000r/min, flow rate approximately 133L/min. It is suitable for heavy construction machinery
3. Hydraulic pumps of different types but with similar functions
Vane pump
V Series (a certain brand) :
V10: Displacement 10ml/r, pressure 140bar, rotational speed 1800r/min, flow rate approximately 15L/min, low noise (≤70dB), suitable for precision machine tools and light industrial machinery
V20: Displacement 20ml/r, pressure 140bar, rotational speed 1800r/min, flow rate approximately 30L/min, uniform flow rate, suitable for systems with high requirements for stability
Plunger pump
A10VSO Series (a certain brand) :
A10VSO28: Displacement 28ml/r, pressure 350bar, rotational speed 2500r/min, flow rate approximately 65L/min, high efficiency (≥90%), suitable for high-pressure precision systems
A10VSO71: Displacement 71ml/r, pressure 350bar, rotational speed 2000r/min, flow rate approximately 120L/min. It is suitable for the main systems of large-scale construction machinery
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111.21.019.00SHP2NN/022RN06SFP1MEMENNDN/NNNNN111.21.019.00-03HP2NN/022RN06SFP1MEMENNDN/NNNNN111.21.020.00
SHP2NN/022RN01DAP1C7C3NNNN/NNNNN111.21.021.00SHP2NN/022RN01BAP1C7C3NNNN/NNNNN111.21.022.00SHP2NN/019RN02AAP1B7B5NNNN/NNNNN
111.21.023.00SHP2NN/022RN02AAP1B7B5NNNN/NNNNN111.21.024.00SHP2NN/022RN04DBP1B7B5EUBN/NNNNN111.21.024.00-07
HP2NN/022RN04DBP1B7B5EUBN/NNNNN111.21.027.00SHP2NN/022LNB1DGP1C7C3NNBN/NNNNN111.21.027.00-07HP2NN/022LNB1DGP1C7C3NNBN/NNNNN
111.21.028.00SHP2NN/022RN05DBP1B7B5NNNN/NNNNN111.21.029.00SHP2NN/019RN06SFP1B7B5YYNN/NNNNN111.21.030.00
SHP2NN/022LN04AAP1B7B5NNNN/NNNNN111.21.031.00SHP2NN/019LN01DAP1B7B5NNNN/NNNNN111.22.005.0ASKP2NN/014LN06SGP1B7B5YYNN/NNNNN
111.22.005.0CSKP2NN/014RN06SGP1B7B5YYNN/NNNNN111.22.010.0CSKP2NN/022RN06SBP1MEMENNDA/NNNNN111.22.010.0C-03
KP2NN/022RN06SBP1MEMENNBA/NNNNN111.22.013.0ASKP2NN/8,0LN06SBP1B7B5YYNN/NNNNN111.22.014.0ASKP2NN/011LN06SBP1B7B5YYNN/NNNNN
111.22.014.0CSKP2NN/011RN06SBP1B7B5YYNN/NNNNN111.22.015.0ASKP2NN/014LN06SBP1B7B5YYNN/NNNNN111.22.017.0C
SKP2NN/019RN06SBP1B7B5YYNN/NNNNN111.22.019.0ASKP2NN/025LN06SBP1B7B5YYNN/NNNNN111.22.019.0CSKP2NN/025RN06SBP1B7B5YYNN/NNNNN
111.22.020.0ASKP2NN/019LNH6SBP1MHMENNDN/NNNNN111.22.020.0CSKP2NN/019RNH6SBP1MHMENNDN/NNNNN111.22.020.0C-03
KP2NN/019RNH6SBP1MHMENNDN/NNNNN111.22.023.0ASKP2NN/8,0LN06SBP1E6E5NNNN/NNNNN111.22.023.0CSKP2NN/8,0RN06SBP1E6E5NNNN/NNNNN
111.22.024.0ASKP2NN/011LN06SBP1E6E5NNNN/NNNNN111.22.025.0CSKP2NN/014RN06SBP1E6E5NNNN/NNNNN111.22.026.0C
SKP2NN/017RN06SBP1E6E5NNNN/NNNNN111.22.027.0ASKP2NN/019LN06SBP1E6E5NNNN/NNNNN111.22.028.0ASKP2NN/022LN06SBP1E6E5NNNN/NNNNN
111.22.028.0CSKP2NN/022RN06SBP1E6E5NNNN/NNNNN111.22.029.0CSKP2NN/025RN06SBP1E6E5NNNN/NNNNN111.22.030.0C
SKP2NN/025RNH6SBP1MHMENNNA/NNNNN111.22.030.0C-03KP2NN/025RNH6SBP1MHMENNNA/NNNNN111.22.031.0ASKP2NN/011LNA6SBP1B7B5YYNN/NNNNN
111.22.032.0ASKP2NN/6,0LNA6SBP1B6B5YYNN/NNNNN111.22.032.0CSKP2NN/6,0RNA6SBP1B6B5YYNN/NNNNN111.22.033.0C
KP2NN/022RN06SBP1E6E5NNGN/NNNNN111.22.034.0CSKP2EN/022RN06SBE6E8E5NNNN/VCQCN111.22.035.0CKP2NN/4,0RN01BAP1C3C3NNNN/NNNNN
111.22.039.0CSKP2NN/014RN01BAP1C7C3NNNN/NNNNN111.22.040.0CKP2NN/017RN01BAP1C7C3NNNN/NNNNN111.22.043.0C
SKP2NN/025RN01BAP1C8C7NNNN/NNNNN111.22.054.0CSKP2NN/8,0RNA6SBP1B7B5YYNN/NNNNN111.22.055.0CSKC2NN/011RN06SBC6NNNNNNNN/NNNNN
111.22.056.0ASKP2NN/011LN06SBP1E6E4NNNN/NNNNN111.22.056.0CSKP2NN/011RN06SBP1E8E4NNNN/NNNNN111.22.057.0C
SKP2NN/022RN06SBP1E8E6NNNN/NNNNN111.22.058.0CSKP2NN/022RN06SBP1B7B5ZZNN/NNNNN111.22.059.0ASKP2NN/025LNA6SBP1B7B5YYNN/NNNNN
111.22.060.0ASKP2NN/011LN06SBP1B7B5NNGN/NNNNN111.22.060.0CSKP2NN/011RN06SBP1B7B5NNGN/NNNNN111.22.061.0C
SKP2NN/011RN06SBP1E8E5NNNN/NNNNN111.22.062.0CSKP2NN/022RN06SBP1E6E5NNNN/NNNIN111.22.063.0ASKP2NN/025LN06SBP1F6F5NNNN/NNNNN
111.22.063.0CSKP2NN/025RN06SBP1F6F5NNNN/NNNNN111.22.064.0ASKP2NN/022LN06SBP1E6E5NNNN/NNNNN111.22.065.0A
SKP2NN/019LN06SBP1E6E5NNNN/NNNNN111.22.066.0ASKP2NN/8,0LN06SBP1C3C3NNNN/NNNNN111.22.067.0ASKP2NN/019LNH6SGP1MHMENNDN/NNNNN
111.22.067.0CSKP2NN/019RNH6SGP1MHMENNDN/NNNNN111.22.068.0CSKP2NN/022RN06SGP1E6E5NNNN/NNNNN111.22.069.0A
SKP2NN/022LNA6SBP1C7C3NNNN/NNNNN111.24.003.00SEP3NN/022LN01BAP1C7C7NNNN/NNNNN111.24.003.00-0LSEP3NN/022LN01BAP1C7C7NNNN/NNNNN
111.24.004.00SEP3NN/022RN01BAP1C7C7NNNN/NNNNN111.24.005.00SEP3NN/026LN01BAP1C7C7NNNN/NNNNN111.24.005.00-0L
SEP3NN/026LN01BAP1C7C7NNNN/NNNNN111.24.006.00SEP3NN/026RN01BAP1C7C7NNNN/NNNNN111.24.007.00SEP3NN/033LN01BAP1CAC7NNNN/NNNNN
111.24.008.00SEP3NN/033RN01BAP1CAC7NNNN/NNNNN111.24.009.00SEP3NN/038LN01BAP1CAC7NNNN/NNNNN111.24.010.00
SEP3NN/038RN01BAP1CAC7NNNN/NNNNN111.24.011.00SEP3NN/044LN01BAP1CACANNNN/NNNNN111.24.012.00SEP3NN/044RN01BAP1CACANNNN/NNNNN
111.24.044.00SEP3NN/022RN07SAP1E8E6NNNN/NNNNN111.24.045.00SEP3NN/026LN07SAP1E8E6NNNN/NNNNN111.24.046.00
SEP3NN/026RN07SAP1E8E6NNNN/NNNNN111.24.047.00SEP3NN/033LN07SAP1E9E8NNNN/NNNNN111.24.048.00SEP3NN/033RN07SAP1E9E8NNNN/NNNNN
111.24.049.00SEP3NN/038LN07SAP1E9E8NNNN/NNNNN111.24.050.00SEP3NN/038RN07SAP1E9E8NNNN/NNNNN111.24.051.00
SEP3NN/044LN07SAP1E9E8NNNN/NNNNN111.24.052.00SEP3NN/044RN07SAP1E9E8NNNN/NNNNN111.24.105.00SEP3NN/022LN07SAP1E9E8NNNN/NNNNN
111.24.110.00SEP3NN/022RN01BAP1F5F5NNNN/NNNNN111.24.114.00SEP3NN/033RN01BAP1F6F5NNNN/NNNNN111.24.127.00
SEP3NN/022LN01BAP1E8E6NNNN/NNNNN111.24.131.00SEP3NN/022RN01BAP1E8E6NNNN/NNNNN111.25.001.0ASNP3NN/022LN07SAP1C7C7NNNN/NNNNN
111.25.001.0CSNP3NN/022RN07SAP1C7C7NNNN/NNNNN111.25.002.0ASNP3NN/026LN07SAP1C7C7NNNN/NNNNN111.25.002.0C
SNP3NN/026RN07SAP1C7C7NNNN/NNNNN111.25.003.0ASNP3NN/033LN07SAP1CAC7NNNN/NNNNN111.25.003.0CSNP3NN/033RN07SAP1CAC7NNNN/NNNNN
111.25.004.0ASNP3NN/038LN07SAP1CAC7NNNN/NNNNN111.25.004.0CSNP3NN/038RN07SAP1CAC7NNNN/NNNNN111.25.005.0A
SNP3NN/044LN07SAP1CACANNNN/NNNNN111.25.005.0CSNP3NN/044RN07SAP1CACANNNN/NNNNN111.25.006.0ASNP3NN/048LN07SAP1CACANNNN/NNNNN
111.25.006.0CSNP3NN/048RN07SAP1CACANNNN/NNNNN111.25.007.0ASNP3NN/055LN07SAP1CACANNNN/NNNNN111.25.007.0C
SNP3NN/055RN07SAP1CACANNNN/NNNNN111.25.008.0ASNP3NN/063LN07SAP1CDCANNNN/NNNNN111.25.008.0CSNP3NN/063RN07SAP1CDCANNNN/NNNNN
111.25.009.0ASNP3NN/075LN07SAP1CDCANNNN/NNNNN111.25.009.0CSNP3NN/075RN07SAP1CDCANNNN/NNNNN111.25.010.0A
SNP3NN/090LN07SAP1CDCANNNN/NNNNN111.25.010.0CSNP3NN/090RN07SAP1CDCANNNN/NNNNN111.25.011.0ASNP3NN/022LN07SAP1A3A2NNNN/NNNNN
111.25.011.0CSNP3NN/022RN07SAP1A3A2NNNN/NNNNN111.25.012.0ASNP3NN/026LN07SAP1A3A2NNNN/NNNNN111.25.012.0C
SNP3NN/026RN07SAP1A3A2NNNN/NNNNN111.25.013.0ASNP3NN/033LN07SAP1A4A3NNNN/NNNNN111.25.013.0CSNP3NN/033RN07SAP1A4A3NNNN/NNNNN
111.25.014.0ASNP3NN/038LN07SAP1A4A3NNNN/NNNNN111.25.014.0CSNP3NN/038RN07SAP1A4A3NNNN/NNNNN111.25.015.0A
SNP3NN/044LN07SAP1A4A3NNNN/NNNNN111.25.015.0CSNP3NN/044RN07SAP1A4A3NNNN/NNNNN111.25.016.0ASNP3NN/048LN07SAP1A4A3NNNN/NNNNN
111.25.016.0CSNP3NN/048RN07SAP1A4A3NNNN/NNNNN111.25.017.0ASNP3NN/055LN07SAP1A5A4NNNN/NNNNN111.25.017.0C
SNP3NN/055RN07SAP1A5A4NNNN/NNNNN111.25.018.0ASNP3NN/063LN07SAP1A5A4NNNN/NNNNN111.25.018.0CSNP3NN/063RN07SAP1A5A4NNNN/NNNNN
111.25.019.0ASNP3NN/075LN07SAP1A5A4NNNN/NNNNN111.25.019.0CSNP3NN/075RN07SAP1A5A4NNNN/NNNNN111.25.020.0A
SNP3NN/090LN07SAP1A5A4NNNN/NNNNN111.25.020.0CSNP3NN/090RN07SAP1A5A4NNNN/NNNNN111.25.022.0ASNP3NN/022LN01BAP1C7C7NNNN/NNNNN
111.25.022.0CSNP3NN/022RN01BAP1C7C7NNNN/NNNNN111.25.023.0ASNP3NN/026LN01BAP1C7C7NNNN/NNNNN111.25.023.0C
SNP3NN/026RN01BAP1C7C7NNNN/NNNNN111.25.024.0ASNP3NN/033LN01BAP1CAC7NNNN/NNNNN111.25.024.0CSNP3NN/033RN01BAP1CAC7NNNN/NNNNN
111.25.025.0ASNP3NN/038LN01BAP1CAC7NNNN/NNNNN111.25.025.0CSNP3NN/038RN01BAP1CAC7NNNN/NNNNN111.25.026.0A
SNP3NN/044LN01BAP1CACANNNN/NNNNN111.25.026.0CSNP3NN/044RN01BAP1CACANNNN/NNNNN111.25.027.0ASNP3NN/048LN01BAP1CACANNNN/NNNNN
111.25.027.0CSNP3NN/048RN01BAP1CACANNNN/NNNNN111.25.028.0ASNP3NN/055LN01BAP1CACANNNN/NNNNN111.25.028.0C
SNP3NN/055RN01BAP1CACANNNN/NNNNN111.25.029.0ASNP3NN/063LN01BAP1CDCANNNN/NNNNN111.25.029.0CSNP3NN/063RN01BAP1CDCANNNN/NNNNN
111.25.030.0ASNP3NN/075LN01BAP1CDCANNNN/NNNNN111.25.030.0CSNP3NN/075RN01BAP1CDCANNNN/NNNNN111.25.031.0A
SNP3NN/090LN01BAP1CDCANNNN/NNNNN111.25.031.0CSNP3NN/090RN01BAP1CDCANNNN/NNNNN111.25.032.0CSNP3NN/026RN07SAP1CAC7NNNN/NNNNN
111.25.033.0ASNP3NN/050LN07GAP1A5A3NNNN/NNNNN111.25.033.0A-08NP3NN/050LN07GAP1A5A3NNNN/NNNNN111.25.034.0A
SNP3NN/022LN06CAP1BBBANNNN/NNNNN111.25.035.0ASNP3NN/026LN06CAP1BBBANNNN/NNNNN111.25.036.0ASNP3NN/033LN06CAP1BBBANNNN/NNNNN
111.25.037.0ASNP3NN/038LN06CAP1BBBANNNN/NNNNN111.25.038.0ASNP3NN/044LN06CAP1BBBANNNN/NNNNN111.25.044.0A
SNP3NN/022LN07GCP1A3A2NNNN/NNNNN111.25.045.0ASNP3NN/048LN01BAP1F6F6NNNN/NNNNN111.25.045.0CSNP3NN/048RN01BAP1F6F6NNNN/NNNNN
111.25.046.0ASNP3NN/022LN07GAP1A3A2NNNN/NNNNN111.25.046.0CSNP3NN/022RN07GAP1A3A2NNNN/NNNNN111.25.047.0A
SNP3NN/026LN07GAP1A3A2NNNN/NNNNN111.25.047.0CSNP3NN/026RN07GAP1A3A2NNNN/NNNNN111.25.048.0ASNP3NN/033LN07GAP1A4A3NNNN/NNNNN
111.25.048.0CSNP3NN/033RN07GAP1A4A3NNNN/NNNNN111.25.049.0ASNP3NN/038LN07GAP1A4A3NNNN/NNNNN111.25.049.0C
SNP3NN/038RN07GAP1A4A3NNNN/NNNNN111.25.050.0ASNP3NN/044LN07GAP1A4A3NNNN/NNNNN111.25.050.0CSNP3NN/044RN07GAP1A4A3NNNN/NNNNN
111.25.051.0CSNP3NN/048RN07GAP1A4A3NNNN/NNNNN111.25.052.0ASNP3NN/055LN07GAP1A5A4NNNN/NNNNN111.25.052.0C
SNP3NN/055RN07GAP1A5A4NNNN/NNNNN111.25.053.0ASNP3NN/063LN07GAP1A5A4NNNN/NNNNN111.25.053.0CSNP3NN/063RN07GAP1A5A4NNNN/NNNNN
111.25.054.0ASNP3NN/075LN07GAP1A5A4NNNN/NNNNN111.25.054.0CSNP3NN/075RN07GAP1A5A4NNNN/NNNNN111.25.055.0A
SNP3NN/090LN07GAP1A5A4NNNN/NNNNN111.25.055.0CSNP3NN/090RN07GAP1A5A4NNNN/NNNNN111.25.059.0ASNP3NN/038LN03BBP1CAC7NNNN/NNNNN
111.25.060.0ASNP3NN/044LN03BBP1CACANNNN/NNNNN111.25.060.0CSNP3NN/044RN03BBP1CACANNNN/NNNNN111.25.061.0A
SNP3NN/048LN03BBP1CACANNNN/NNNNN111.25.061.0CSNP3NN/048RN03BBP1CACANNNN/NNNNN111.25.062.0ASNP3NN/055LN03BBP1CACANNNN/NNNNN
111.25.062.0CSNP3NN/055RN03BBP1CACANNNN/NNNNN111.25.063.0ASNP3NN/063LN03BBP1CDCANNNN/NNNNN111.25.063.0C
SNP3NN/063RN03BBP1CDCANNNN/NNNNN111.25.064.0ASNP3NN/075LN03BBP1CDCANNNN/NNNNN111.25.064.0CSNP3NN/075RN03BBP1CDCANNNN/NNNNN
111.25.065.0ASNP3NN/090LN03BBP1CDCANNNN/NNNNN111.25.065.0CSNP3NN/090RN03BBP1CDCANNNN/NNNNN111.25.066.0A
SNP3NN/022LN01BAP1F5F5NNNN/NNNNN111.25.066.0CSNP3NN/022RN01BAP1F5F5NNNN/NNNNN111.25.067.0CSNP3NN/026RN01BAP1F5F5NNNN/NNNNN
111.25.068.0ASNP3NN/033LN01BAP1F6F5NNNN/NNNNN111.25.068.0CSNP3NN/033RN01BAP1F6F5NNNN/NNNNN111.25.069.0A
SNP3NN/038LN01BAP1F6F5NNNN/NNNNN111.25.069.0CSNP3NN/038RN01BAP1F6F5NNNN/NNNNN111.25.070.0ASNP3NN/044LN01BAP1F6F6NNNN/NNNNN
111.25.070.0CSNP3NN/044RN01BAP1F6F6NNNN/NNNNN111.25.071.0CSNP3NN/055RN01BAP1F6F6NNNN/NNNNN111.25.072.0C
SNP3NN/063RN01BAP1F7F6NNNN/NNNNN111.25.073.0CSNP3NN/075RN01BAP1F7F6NNNN/NNNNN111.25.075.0ASNP3NN/022LN06AAP1BBBANNNN/NNNNN
111.25.075.0CSNP3NN/022RN06AAP1BBBANNNN/NNNNN111.25.076.0ASNP3NN/026LN06AAP1BBBANNNN/NNNNN111.25.076.0C
SNP3NN/026RN06AAP1BBBANNNN/NNNNN111.25.077.0ASNP3NN/033LN06AAP1BBBANNNN/NNNNN111.25.077.0CSNP3NN/033RN06AAP1BBBANNNN/NNNNN
111.25.078.0ASNP3NN/038LN06AAP1BBBANNNN/NNNNN111.25.078.0CSNP3NN/038RN06AAP1BBBANNNN/NNNNN111.25.079.0A
SNP3NN/044LN06AAP1BBBANNNN/NNNNN111.25.079.0CSNP3NN/044RN06AAP1BBBANNNN/NNNNN111.25.080.0ASNP3NN/048LN06AAP1BBBANNNN/NNNNN
111.25.080.0CSNP3NN/048RN06AAP1BBBANNNN/NNNNN111.25.081.0CSNP3NN/055RN06AAP1BBBANNNN/NNNNN111.25.082.0A
SNP3NN/063LN06AAP1BCBBNNNN/NNNNN111.25.082.0CSNP3NN/063RN06AAP1BCBBNNNN/NNNNN111.25.083.0CSNP3NN/075RN06AAP1BCBBNNNN/NNNNN
111.25.085.0ASNP3NN/022LN07SAP1BBBANNNN/NNNNN111.25.085.0CSNP3NN/022RN07SAP1BBBANNNN/NNNNN111.25.086.0A
SNP3NN/026LN07SAP1BBBANNNN/NNNNN111.25.086.0CSNP3NN/026RN07SAP1BBBANNNN/NNNNN111.25.087.0ASNP3NN/033LN07SAP1BBBANNNN/NNNNN
111.25.087.0CSNP3NN/033RN07SAP1BBBANNNN/NNNNN111.25.088.0ASNP3NN/038LN07SAP1BBBANNNN/NNNNN111.25.088.0C
SNP3NN/038RN07SAP1BBBANNNN/NNNNN111.25.089.0ASNP3NN/044LN07SAP1BBBANNNN/NNNNN111.25.089.0CSNP3NN/044RN07SAP1BBBANNNN/NNNNN
111.25.090.0ASNP3NN/048LN07SAP1BBBAZZNN/NNNNN111.25.090.0CSNP3NN/048RN07SAP1BBBAZZNN/NNNNN111.25.091.0A
SNP3NN/055LN07SAP1BBBAZZNN/NNNNN111.25.091.0CSNP3NN/055RN07SAP1BBBAZZNN/NNNNN111.25.092.0ASNP3NN/063LN07SAP1BCBBZZNN/NNNNN
111.25.092.0CSNP3NN/063RN07SAP1BCBBZZNN/NNNNN111.25.093.0ASNP3NN/075LN07SAP1BCBBZZNN/NNNNN111.25.093.0C
SNP3NN/075RN07SAP1BCBBZZNN/NNNNN111.25.094.0CSNP3NN/090RN07SAP1BCBBZZNN/NNNNN111.25.095.0ASNP3NN/022LN01DAP1C7C7NNNN/NNNNN
111.25.096.0ASNP3NN/026LN01DAP1C7C7NNNN/NNNNN111.25.097.0ASNP3NN/033LN01DAP1CAC7NNNN/NNNNN111.25.097.0C
SNP3NN/033RN01DAP1CAC7NNNN/NNNNN111.25.098.0ASNP3NN/038LN01DAP1CAC7NNNN/NNNNN111.25.099.0ASNP3NN/044LN01DAP1CACANNNN/NNNNN
111.25.099.0CSNP3NN/044RN01DAP1CACANNNN/NNNNN111.25.100.0ASNP3NN/048LN01DAP1CACANNNN/NNNNN111.25.101.0A
SNP3NN/055LN01DAP1CACANNNN/NNNNN111.25.101.0CSNP3NN/055RN01DAP1CACANNNN/NNNNN111.25.102.0ASNP3NN/063LN01DAP1CDCANNNN/NNNNN
111.25.103.0ASNP3NN/075LN01DAP1CDCANNNN/NNNNN111.25.105.0ASNP3NN/038LN07SAP1E9E6NNNN/NNNNN111.25.105.0C
SNP3NN/038RN07SAP1E9E6NNNN/NNNNN111.25.106.0ASNP3NN/055LN07SAP1A5A4NNDN/NNNNN111.25.106.0CSNP3NN/055RN07SAP1A5A4NNDN/NNNNN
111.25.107.0ASNP3NN/022LN02BAP1C7C7NNNN/NNNNN111.25.108.0CSNP3NN/026RN02BAP1C7C7NNNN/NNNNN111.25.109.0A
SNP3NN/033LN02BAP1CAC7NNNN/NNNNN111.25.109.0CSNP3NN/033RN02BAP1CAC7NNNN/NNNNN111.25.110.0ASNP3NN/038LN02BAP1CAC7NNNN/NNNNN
111.25.111.0ASNP3NN/044LN02BAP1CACANNNN/NNNNN111.25.111.0CSNP3NN/044RN02BAP1CACANNNN/NNNNN111.25.113.0A
SNP3NN/055LN02BAP1CACANNNN/NNNNN111.25.113.0CSNP3NN/055RN02BAP1CACANNNN/NNNNN111.25.114.0CSNP3NN/063RN02BAP1CDCANNNN/NNNNN
111.25.114.0C-06NP3NN/063RN02BAP1CDCANNNN/NNNNN111.25.115.0CSNP3NN/075RN02BAP1CDCANNNN/NNNNN111.25.116.0C
SNP3NN/022RN01BDP1C7C7NNNN/NNNNN111.25.117.0ASNP3NN/022LN07SAP1E8E6NNNN/NNNNN111.25.117.0CSNP3NN/022RN07SAP1E8E6NNNN/NNNNN
111.25.118.0ASNP3NN/026LN07SAP1E8E6NNNN/NNNNN111.25.118.0CSNP3NN/026RN07SAP1E8E6NNNN/NNNNN111.25.119.0A
SNP3NN/033LN07SAP1E9E8NNNN/NNNNN111.25.119.0CSNP3NN/033RN07SAP1E9E8NNNN/NNNNN111.25.120.0CSNP3NN/038RN07SAP1E9E8NNNN/NNNNN
111.25.121.0ASNP3NN/044LN07SAP1E9E8NNNN/NNNNN111.25.121.0CSNP3NN/044RN07SAP1E9E8NNNN/NNNNN111.25.122.0A
SNP3NN/048LN07SAP1E9E8NNNN/NNNNN111.25.122.0CSNP3NN/048RN07SAP1E9E8NNNN/NNNNN111.25.123.0ASNP3NN/055LN07SAP1EAE9NNNN/NNNNN
111.25.124.0ASNP3NN/063LN07SAP1EAE9NNNN/NNNNN111.25.124.0CSNP3NN/063RN07SAP1EAE9NNNN/NNNNN111.25.128.0C
SNP3NN/022RN07GAP1E8E6NNNN/NNNNN111.25.129.0ASNP3NN/026LN07GAP1E8E6NNNN/NNNNN111.25.129.0CSNP3NN/026RN07GAP1E8E6NNNN/NNNNN
111.25.130.0ASNP3NN/033LN07GAP1E9E8NNNN/NNNNN111.25.130.0CSNP3NN/033RN07GAP1E9E8NNNN/NNNNN111.25.131.0A
SNP3NN/038LN07GAP1E9E8NNNN/NNNNN111.25.131.0CSNP3NN/038RN07GAP1E9E8NNNN/NNNNN111.25.132.0CSNP3NN/044RN07GAP1E9E8NNNN/NNNNN
111.25.133.0ASNP3NN/048LN07GAP1E9E8NNNN/NNNNN111.25.133.0CSNP3NN/048RN07GAP1E9E8NNNN/NNNNN111.25.134.0C
SNP3NN/055RN07GAP1EAE9NNNN/NNNNN111.25.135.0CSNP3NN/063RN07GAP1EAE9NNNN/NNNNN111.25.145.0CSNP3NN/063RN08RAP1A5A4NNNN/NNNNN
111.25.148.0CSNP3NN/022RN09SBP1A3A2NNNN/NNNNN111.25.149.0ASNP3NN/026LN09SBP1A3A2NNNN/NNNNN111.25.149.0C
SNP3NN/026RN09SBP1A3A2NNNN/NNNNN111.25.150.0ASNP3NN/033LN09SBP1A4A3NNNN/NNNNN111.25.150.0CSNP3NN/033RN09SBP1A4A3NNNN/NNNNN
111.25.151.0ASNP3NN/038LN09SBP1A4A3NNNN/NNNNN111.25.151.0CSNP3NN/038RN09SBP1A4A3NNNN/NNNNN111.25.155.0A-02
SNP3NN/026LN01BAP1C7C7NNNN/NNNBN111.25.156.0ASNP3NN/022LN01FAP1C7C7NNNN/NNNNN111.25.156.0CSNP3NN/022RN01FAP1C7C7NNNN/NNNNN
111.25.157.0ASNP3NN/026LN01FAP1C7C7NNNN/NNNNN111.25.157.0CSNP3NN/026RN01FAP1C7C7NNNN/NNNNN111.25.158.0A
SNP3NN/033LN01FAP1CAC7NNNN/NNNNN111.25.158.0CSNP3NN/033RN01FAP1CAC7NNNN/NNNNN111.25.159.0ASNP3NN/038LN01FAP1CAC7NNNN/NNNNN
111.25.159.0CSNP3NN/038RN01FAP1CAC7NNNN/NNNNN111.25.160.0ASNP3NN/044LN01FAP1CACANNNN/NNNNN111.25.160.0C
SNP3NN/044RN01FAP1CACANNNN/NNNNN111.25.161.0ASNP3NN/048LN01FAP1CACANNNN/NNNNN111.25.161.0CSNP3NN/048RN01FAP1CACANNNN/NNNNN
111.25.162.0CSNP3NN/055RN01FAP1CACANNNN/NNNNN111.25.163.0ASNP3NN/063LN01FAP1CDCANNNN/NNNNN111.25.163.0C
SNP3NN/063RN01FAP1CDCANNNN/NNNNN111.25.164.0ASNP3NN/075LN01FAP1CDCANNNN/NNNNN111.25.164.0CSNP3NN/075RN01FAP1CDCANNNN/NNNNN
111.25.165.0CSNP3NN/090RN01FAP1CDCANNNN/NNNNN111.25.166.0ASNP3NN/022LN06DDP1BBBANNNN/NNNNN111.25.167.0A
SNP3NN/055LN07SAP1CAC7NNNN/NNNNN111.25.168.0CSNP3NN/055R707SAP1CACANNNN/NNNNN111.25.168.0C-05NP3NN/055R707SAP1CACANNNN/NNNNN
111.25.171.0ASNP3NN/033LN01FAP1F6F5NNNN/NNNNN111.25.172.0ASNP3NN/038LN01FAP1F6F5NNNN/NNNNN111.25.186.0A
SNP3NN/063LN02FAP1F7F6NNNN/NNNNN111.25.199.0CSNP3NN/022RN09SBP1C7C7NNNN/NNNNN111.25.201.0CSNP3NN/033RN09SBP1CAC7NNNN/NNNNN
111.25.202.0CSNP3NN/038RN09SBP1CAC7NNNN/NNNNN111.25.203.0CSNP3NN/044RN09SBP1CACANNNN/NNNNN111.25.208.0C
SNP3NN/033RN02FAP1CAC7NNNN/NNNNN111.25.210.0ASNP3NN/044LN02FAP1CACANNNN/NNNNN111.25.210.0CSNP3NN/044RN02FAP1CACANNNN/NNNNN
111.25.212.0CSNP3NN/055RN02FAP1CACANNNN/NNNNN111.25.213.0CSNP3NN/063RN02FAP1CDCANNNN/NNNNN111.25.216.0A
SNP3NN/022LN06DDP1BBBANNNN/NNNNN111.25.217.0ASNP3NN/026LN06DDP1BBBANNNN/NNNNN
Vii. Precautions for Use
1. Installation points
Fixed foundation
The flatness of the installation plane should be ≤0.1mm to ensure the stability of the pump body and reduce vibration and noise
Tighten the fixing bolts evenly (with a torque of approximately 60-80N · m) to prevent the housing from deforming and affecting the gear meshing
Axis alignment (key)
The coaxiality with the drive equipment shaft should be ≤0.05mm. Elastic couplings must be used (rigid connections are strictly prohibited).
After the coupling is installed, the pump shaft should be able to rotate easily without any jamming or imbalance, to prevent additional radial force from damaging the bearings
Oil port connection
The diameter of the oil inlet pipe should be no less than 40mm and the length no more than 3m to reduce oil suction resistance and prevent cavitation
The diameter of the oil outlet pipe should be ≥32mm to ensure that the pressure loss is within the allowable range
The oil drain pipe must be connected to the oil tank separately and not in parallel with the return oil pipe. The back pressure should be ≤0.3MPa to prevent damage to the oil seal
All pipelines must be thoroughly cleaned to ensure there are no iron filings, welding slag or other impurities. It is recommended to filter them with a 200-mesh filter screen
2. Startup and Operation management
Startup program
Check the oil level in the fuel tank (more than 200mm above the suction port)
Manually turn the wheel 2 to 3 times to ensure there is no jamming
Loosen the plug of the oil drain port, expel all the air inside the pump, and then tighten it
Start the system under no-load conditions (set the system relief valve to the minimum pressure) and run it for 5 to 10 minutes until the oil temperature rises above 30℃
Gradually increase the pressure (each increase ≤30% of the rated pressure, with an interval of ≥2 minutes). It is strictly prohibited to directly load the cold machine at full load
Key points of operation monitoring
Oil temperature: Normal 40-65℃, not exceeding 80℃ at the maximum. (If the temperature exceeds the limit, stop the machine to check whether the cooling system or the viscosity of the oil is appropriate.)
Pressure: Not exceeding the rated 250bar, peak value ≤280bar and cumulative time ≤10 minutes per hour
Noise: ≤82dB during smooth operation. Abnormal noise (>85dB) indicates possible wear or cavitation, and the machine should be stopped immediately for inspection
Leakage: Normal allowable trace leakage (<5 drops per minute). If the leakage increases, the sealing parts should be inspected and repaired in time
3. Maintenance and care
Daily inspection
Check the oil level, temperature, noise and leakage conditions every shift, and record the operating parameters
Check if the connecting bolts are loose and tighten them in time
Regular maintenance
Every 250 hours: Check the filter and replace the filter element if necessary (the return oil filter must be replaced when the pressure difference is greater than 0.15MPa).
Every 500 hours: Conduct a comprehensive inspection of the seals and replace any aged or damaged sealing rings
Every 1000 hours: Check the contamination level of the oil. Replace the hydraulic oil if necessary (while cleaning the oil tank and pipelines).
Every 2000 hours: Disassemble and inspect the wear of gears and bearings, and measure the fit clearance (the radial clearance should be maintained at 0.03-0.05mm, with a maximum not exceeding 0.08mm).
Oil Product management
Hydraulic oils of different brands must not be mixed to prevent the reaction of additives and the formation of sediment
In cold regions (ambient temperature ≤-10℃), L-HV low-temperature hydraulic oil should be used to improve low-temperature fluidity
When changing the oil, the system should be thoroughly cleaned to prevent the mixture of new and old oil from affecting performance
The cleanliness of the oil should be tested regularly to ensure compliance with ISO 4406 18/15 grade standards
4. Special Precautions
It is strictly prohibited to operate without oil: Even short-term dry running (>5 seconds) can cause severe wear and even sintering of gears and the pump body, resulting in irreversible damage
Prevent cavitation
Make sure the oil suction pipe is well sealed to prevent air from entering the system
The oil suction height should be ≤500mm, and it is recommended to be ≤300mm to reduce the oil suction resistance
When the oil temperature is too low (<10℃), it should be run without load for 10 to 15 minutes first to raise the oil temperature before loading
Oil suction port filtration





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