After-sales Service: | 12 Months |
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Warranty: | 12 Months |
Mesh Form: | External Engaged |
Tooth Flank: | Straight Tooth |
Tooth Curve: | Standard |
Power: | Hydraulic |
Customization: |
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The A4VG axial piston variable pump in swash plate design for hydrostatic closed circuit transmissions.
Hydraulic variable displacement axial pump A4VG40, A4VG56, A4VG71, A4VG90, A4VG125, A4VG180, A4VG250
The A4VG axial piston variable pump in swash plate design for hydrostatic closed circuit transmissions
- Flow is proportional to drive speed and displacement and is infinitely variable
- Output flow increases with the swivel angle of the swash plate from 0 to its maximum value
- Flow direction changes smoothly when the swash plate is moved through the neutral position
- A wide range of highly adaptable control devices is available for different control and regulating functions
- The pump is equipped with two pressure-relief valves on the high pressure ports to protect the hydrostatic transmission (pump and motor) from overload
- The high-pressure relief valves also function as boost valves
- The integrated boost pump acts as a feed and control oil pump
- The maximum boost pressure is limited by a built-in boost pressure relief valve
- The integral pressure cut-off is standard
Technical Parameters
Table of values (theoretical values, without efficiency and tolerances; values rounded)
Size | A4VG40 | A4VG56 | A4VG71 | A4VG90 | A4VG125 | A4VG180 | A4VG250 | ||
Displacement variable pump |
Vg max | cm3 | 40 | 56 | 71 | 90 | 125 | 180 | 250 |
boost pump (20 bar) | Vg Sp | cm3 | 8.6 | 11.6 | 19.6 | 19.6 | 28.3 | 39.8 | 52.5 |
Speed maximum Vg max |
conti. | rpm | 4000 | 3600 | 3300 | 3050 | 2850 | 2500 | 2400 |
limited maximum | limited | rpm | 4200 | 3900 | 3600 | 3300 | 3250 | 2900 | 2600 |
intermittent max. | Min. | rpm | 5000 | 4500 | 4100 | 3800 | 3450 | 3000 | 2700 |
nmin | rpm | 500 | 500 | 500 | 500 | 500 | 500 | 500 | |
Flow continuous and Vg max |
l/min | 160 | 202 | 234 | 275 | 356 | 450 | 600 | |
Power continuous Vg max |
400 bar | kW | 107 | 134 | 156 | 183 | 237 | 300 | 400 |
Torque at Vg max |
400 bar | Nm | 255 | 356 | 451 | 572 | 795 | 1144 | 1590 |
100 bar | Nm | 63.5 | 89 | 112.8 | 143 | 198.8 | 286 | 398 | |
Moment of inertia | JGR | kgm2 | 0.0038 | 0.0066 | 0.0097 | 0.0149 | 0.0232 | 0.0444 | 0.0983 |
Angular acceleration | α | rad/s2 | 30000 | 24000 | 21000 | 18000 | 14000 | 11000 | 6700 |
Filling capacity | V | L | 1.1 | 1.5 | 1.3 | 1.5 | 2.1 | 3.1 | 6.3 |
Weight approx. | m | kg | 31 | 38 | 50 | 60 | 80 | 101 | 156 |
Our advantages:
1. We have a factory that produce pump parts of KPM K3V/K5V/K7V series, The quality can be up to the same quality as the Kawasaki , but the price is far below them. It has good cost performance because our boss has been in the hydraulic industry for 36 years, he is specializing in this technical research and is seriously at quality. If you have a market there, it will be a great advantage.
2. In addition, there is a warehouse can also providing a variety of hydraulic parts for import brands such as Parker , Eaton, KPM, Kawasaki, Rexroth , Calzoni , Yuken, KYB, Hawei, XGCM, Hitachi etc.
3. Packaging: Adopt a variety of packaging and multiple protection to ensure the integrity of products.
4. Double plastic bags: the inner layer is rust and oil proof, and the outer layer is double protection to prevent rain from affecting the external packaging and then affecting the product
5. High elastic foam paper: secure and provide close protection to the product
6. Wooden case: prevent direct impact on products during transportation
7. Logistics: The company is equipped with logistics department and freight drivers to ensure the safety and timely delivery of goods to the designated place/warehouse/port.
8. Certificates: CE/AC (Russian customs union ) etc.
9. Our factory is closed to Shanghai port .
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