PVM PVWJ PVK Hydraulic Oil Pump Pvwj-011/022/034/046/76/098/130 Pvk-140-A1UV-Rdfs-P-1nnsn-Cp/217 Pvm-025-A1ub-Lsfy-P-1nnnn-3

“A1” corresponds to the standard control response level, and “UB” represents the specific valve group adaptation structure, ensuring the stability and accuracy of the control action
LSFY is a code name for load sensing and auxiliary functions. “LS” most likely refers to the configuration related to load sensing control, which can adjust the output according to the system load. “FY” corresponds to compatible sealing and oil circuit accessories, enhancing the adaptability to working conditions
The “P” installation method code usually refers to the horizontal installation form that complies with SAE standards and is compatible with the hydraulic system layout of most industrial equipment
1NNNN is a universal compatibility identifier, corresponding to basic compatibility parameters such as shaft end structure and bearing specifications, ensuring the matching of the pump with the drive shaft and equipment installation base. It belongs to a series of universal codes
Most of them are production batches, factory inspection numbers or customized additional codes, which are used for product traceability and after-sales maintenance distinction
The standard model of PMM-025 is as follows:
The specific value of the parameter type
The theoretical maximum displacement is 25.4ml/rev (1.55in³/rev)
Rated continuous pressure: 258.6bar (3750psi)
Peak pressure: 293.1bar (4250psi)
At a rated flow rate of 1800rpm, it is 38.2L/min (10.1gpm).
Maximum rotational speed: 2700rpm
The minimum inlet pressure is 0.34bar at 1200-1500 RPM. It is 0.40bar at 1800rpm
Rated input power: 1800rpm, approximately 28.1kW (37.7hp) at rated pressure
The external dimensions are 241.5mm in length, 228.6mm in width and 225.6mm in height
The weight is approximately 33.1 kilograms
Compatible with fluid hydraulic oil, it can be compatible with low-lubricity hydraulic media
The working principle is essentially a swash plate axial piston pump, with the core relying on changes in the sealed volume to achieve oil suction, discharge and pressurization. The specific process is as follows: The transmission shaft drives the cylinder block to rotate through splines, and the sliding shoe at the end of the plunger closely adheres to the movable swash plate. When the cylinder block rotates, the inclination Angle of the swash plate forces the plunger to perform reciprocating motion within the cylinder block. When the plunger extends outward, the volume of the working chamber inside the cylinder expands to form a negative pressure, and the hydraulic oil is drawn in through the oil suction groove of the oil distribution plate. When the plunger retract inward, the volume of the working chamber decreases, and the oil is pressurized and discharged through the oil drain groove of the oil distribution plate. The reciprocating stroke of the plunger can be changed by adjusting the inclination Angle of the swash plate, thereby flexibly adjusting the output displacement of the pump to adapt to the changes in system load.
Functional features
Strong modular adaptability: Adopting a modular design, it can be matched with different control accessories and sealing components according to actual needs, facilitating adjustments by integrators and equipment manufacturers as required, and is compatible with various customized hydraulic systems.
Flexible load adaptation: Equipped with load sensory-related configurations, it can respond in real time to changes in system load, automatically adjust output flow and pressure, avoid unnecessary energy consumption, and ensure the smooth operation of hydraulic actuators at the same time.
Outstanding anti-pollution capability: It adopts a “hard-to-hard” rotating system design, which is more resistant to impurity contamination in hydraulic oil compared to traditional structures, reduces wear, and lowers the risk of failure caused by insufficient oil cleanliness.
Product advantages
Outstanding durability: The cast steel housing, combined with high-strength bearings and wear-resistant plunger structure, can withstand a peak pressure impact of 293.1bar, making it suitable for long-term high-pressure working conditions. Its service life far exceeds that of ordinary plunger pumps.
Stable and reliable operation: The control response level is moderate, the output flow is uniform, the pressure fluctuation is small, and it can still operate stably at a high speed of 2700rpm, avoiding equipment vibration or jamming during operation.
High cost performance: The compact structure design combines high performance with low cost. Compared with imported plunger pumps of the same specification, the modular design reduces maintenance and parts replacement costs, making it suitable for batch matching use.
Operating environment
Oil requirements: Compatible with conventional hydraulic oil, and compatible with low-lubricity hydraulic media. The cleanliness of the oil should be controlled within NAS10 grade to prevent impurities from wearing the precision components inside the pump body.
Temperature conditions: Suitable for industrial conventional ambient temperatures ranging from -10 ℃ to 55℃. The working temperature of the oil is recommended to be maintained at 30℃ to 60℃ to prevent oil deterioration due to high temperatures or viscosity impact due to low temperatures.
Installation environment: It should be installed in a place free from severe vibration and corrosive gases. The inlet oil circuit must ensure stable oil supply to avoid cavitation caused by low inlet pressure and damage to the plunger.
This model is suitable for high-pressure hydraulic systems in various harsh working conditions. Common scenarios include: hydraulic drive systems of heavy-duty machine tools, such as the spindles and feed mechanisms of CNC lathes and milling machines; Hydraulic circuits for small-scale extraction equipment in the oil and gas field, such as wellhead valve control and small oil pumping unit drive; Hydraulic systems for stamping equipment and welding fixtures in the automotive manufacturing industry; In addition, it can also be used in scenarios such as small lifting equipment in ports and hydraulic drive of stirring mechanisms in chemical reaction vessels.
The PVM series model list: This series covers multiple displacement specifications and is suitable for different flow requirements.

Common models are as follows:
Small-displacement models: PVM-011-B1UB-LSAY P-1NNNN, PVM-014, PVM-022-B1UB-RDAY P-1NNSN-AN
Medium displacement models: PVM-025, PVM-034, PVM-046-A1UB-RSFY-P-1NNNN
Large-displacement models: PVM-064, PVM-065, PVM-075, PVM-076, PVM-098, PVM-130-A2UV-RFY-P-1NNSN