Hydraulic Plunger Pump
Your Professional Hydraulic Plunger Pump Supplier
Ningbo Hyleman Hydraulics Co., Ltd is a scientific and innovative company integrating R & D, production, sales and service of high-quality hydraulic pumps, motors, gear reducers and other hydraulic products.Hyleman mainly supply A10V, A4V, A4VG, A11V, A15V, A20V,A2FO,A2FM, A6VM, PV, PVP, PVAC, PVB, PVQ, PVH series piston pumps and motors ; T6,T7,V,VQ, M5A, M5B, M4C, M4D, M4E, 25M, 35M, 45M, 50M series vane pumps and motors;C101/102, G101/102, PGP/PGM, 30/31,50/51, 75/76 series gear pumps and motors.
Why choose us
QUALITY ASSURANCE
Through the honing and innovation of Hyleman people, Hyleman series products can not only perfectly replace the original products, but also realize the seamless exchange and connection of all the parts.
GOOD SERVICE
Hyleman are devoting to provide our clients with the best quality products, and the comprehensive solutions of hydraulics.
PRODUCT APPLICATION
Hyleman series products are widely used in engineering machinery, plastic machinery, metallurgical machinery, environmental sanitation machinery, mining machinery, marine machinery, packaging machinery, port machinery and various hydraulic equipment, which are highly praised by clients.
PRODUCT EXPORT
Through the honing and innovation of Hyleman people, Hyleman series products can not only perfectly replace the original products, but also realize the seamless exchange and connection of all the parts. Hyleman products have been exported to more than 70 countries and regions around the world.

The plunger pump is the power element of the hydraulic transmission and control system.The engine (motor) conducts mechanical energy to the plunger pump, and drives the plunger to reciprocate in the plunger pump cylinder, so that the volume of the closed working chamber is changed to achieve oil suction and oil pressure, and finally the mechanical energy is converted into hydraulic oil Pressure energy provides hydraulic power for the hydraulic system. The plunger pump is a kind of hydraulic pump. Compared with other types of hydraulic pumps such as vane pumps and gear pumps, it has the advantages of high rated pressure, compact structure, high precision, good sealing, high efficiency and convenient flow adjustment. It is suitable for application scenarios that require stable high-pressure hydraulic systems, and is widely used in high-end equipment manufacturing and use fields.
Specification
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Product parameter |
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Products name: |
Hydraulic Piston Pump |
Part NO.: |
A4VSO |
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SIZE: |
OEM Size |
After Warranty Service: |
Online support, Spare parts |
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Applicable Industries: |
Machinery Repair Shops, Retail, Construction works |
Local Service Location: |
None |
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Brand Name: |
FQ |
Warranty: |
1 Year |
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Application: |
Excavator |
Product description: |
Diesel engine |
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PART NO.: |
N/A |
MOQ: |
2 pcs |
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Delivery time: |
Within 3 days after receive payment |
After-sales Service Provided: |
Online support, Engineers available to service machinery overseas, Free spare parts |
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Prices Advantage: |
Manufacure |
Factory frice: |
Wholesale |
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Place of Origin: |
Hubei China |
Packing: |
Wooden case/ Plywood/ Carton |
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Please contact us if you have any questions |
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Specification
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Size |
18 |
28 |
45 |
71 |
88 |
100 |
140 |
45 |
71 |
100 |
140 |
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Version |
Standard |
Specification |
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Displacement |
Vg max |
cm³ |
18 |
28 |
45 |
71 |
88 |
100 |
140 |
45 |
71 |
100 |
140 |
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Geometric, per revolution |
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Nominal pressure |
Pnom |
bar |
280 |
280 |
280 |
280 |
280 |
280 |
280 |
280 |
280 |
280 |
280 |
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Maximum pressure |
Pmax |
bar |
350 |
350 |
350 |
350 |
350 |
350 |
350 |
350 |
350 |
350 |
350 |
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Maximum speed 1) |
At Vg max |
Nnom |
rpm |
3300 |
3000 |
2600 |
2200 |
2100 |
2000 |
1800 |
3000 |
2550 |
2300 |
2050 |
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Flow |
At Vg max and nnom |
QV nom |
l/min |
59 |
84 |
117 |
156 |
185 |
200 |
252 |
135 |
178 |
230 |
287 |
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At Vg max and n = 1500 rpm |
QV 1500 |
l/min |
27 |
42 |
68 |
107 |
132 |
150 |
210 |
68 |
107 |
150 |
210 |
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Power |
At qV nom and pnom |
P |
kW |
30 |
39 |
55 |
73 |
86 |
93 |
118 |
63 |
83 |
107 |
134 |
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At qV 1500 and pnom |
P 1500 |
kW |
12.6 |
20 |
32 |
50 |
62 |
70 |
98 |
32 |
50 |
70 |
98 |
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Torque |
At Vg max and pnom |
M |
Nm |
80 |
125 |
200 |
316 |
392 |
445 |
623 |
200 |
316 |
445 |
623 |
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Weight (approx.) |
m |
kg |
12.9 |
18 |
23.5 |
35.2 |
35.2 |
49.5 |
65.4 |
23.5 |
35.2 |
49.5 |
65.4 |
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The piston pump is divided into two representative structural forms: axial piston pump and radial piston pump; Because radial piston pump is a new type of high-efficiency pump with high technology content, radial piston pump will become an important part of the application field of piston pump; Radial piston pump is a kind of piston pump whose reciprocating motion direction is perpendicular to the driving shaft.The oil flow in and out of the pump body and the flow passage on the valve shaft are controlled by the oil suction port on the valve shaft. The liquid pressure generated in the pump body is absorbed by the surface of static pressure balance.

Efficiency and flow rate considerations

Flow Rate Range:
Generally ranges from 0.5 GPM to over 600 GPM depending on model and application specifications.
Pressure Capabilities:
Operates from 500 PSI to 10,000 PSI and above while supporting high pressure applications with minimal energy loss.
Adjustable Performance:
The Flow rate is controlled by changing the length of the plunger’s stroke or the pump’s speed, providing precise fluid control.
Durability and maintenance requirements
Seal Replacement:
Depending on the working conditions and the users’ needs, seals can be replaced whenever they are required. Heavy-duty applications will most likely require replacements after 2,000 to 8,000 hours.
Plunger Wear Assessment:
Plungers suffer from efficiency loss due to surface wears that may cause shifts in the gears. For example, hard-coated (ceramic coated) plungers don’t suffer from wears as easily hence, lasts longer, and is ideal for times when efficiency needs to be preserved.
Lubrication:
The crankcase, along with the bearings, must receive ample lubrication. Along with that, high-grade lubricants need to be applied and changed after 500 – 1,000 operational hours or else those components will not function properly.
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