Shaoyang Victor Hydraulic Co., Ltd.
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High-pressure Construction Machinery Piston Pump with 400 bar For Mining Equipment
Features:
1. Variable axial piston pump of swashplate design for hydrostatic drives in closed circuit.
2. The flow is proportional to the drive speed and displacement.
3. The flow can be infinitely varied by adjusting the swashplate angle.
4. Flow direction changes smoothly when the swashplate is moved through the neutral position.
5. A wide range of highly adaptable control devices with different control and regulating functions, for all important applications.
6. Two pressure-relief valves are provided on the high-pressure side to protect the hydrostatic transmission (pump and motor) from overload.
7. The high-pressure relief valves also function as boost valves.
8. The integrated boost pump acts as a feed pump and control pressure supply.
9. The maximum boost pressure is limited by a built-in low pressure relief valve.
10. As standard with integrated pressure cut-off.
Technical data:
| Size | NG | 56 | 71 | 90 | 125 | 180 | ||
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Geometric displacement, per revolution |
variable pump | Vg max | cm3 | 56 | 71 | 90 | 125 | 180 |
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boost pump (at Δp = 20 bar) |
Vg Sp | cm3 | 11.6 | 19.6 | 19.6 | 28.3 | 39.8 | |
| Rotational speed |
maximum at Vg max |
nnom | rpm | 3600 | 3300 | 3050 | 2850 | 2500 |
| limited maximum | nmax1 | rpm | 3900 | 3600 | 3300 | 3250 | 2900 | |
| intermittent maximum | nmax2 | rpm | 4500 | 4100 | 3800 | 3450 | 3000 | |
| minimum | nmin | rpm | 500 | 500 | 500 | 500 | 500 | |
| Flow |
at nnom and Vg max |
qv | l/min | 202 | 234 | 275 | 356 | 450 |
| Power at nnom, Vg max |
Δp = 400 bar | P | kW | 134 | 156 | 183 | 238 | 300 |
| Torque with Vg max | Δp = 400 bar | M | Nm | 357 | 452 | 573 | 796 | 1146 |
| Δp = 100 bar | M | Nm | 89 | 113 | 143 | 199 | 286 | |
| Rotary stiffness of drive shaft | S | c | kNm/rad | 80.8 | 98.8 | 158.1 | 218.3 | 244.5 |
| T | c | kNm/rad | 95 | 120.9 | – | 252.1 | 318.4 | |
| A | c | kNm/rad | 95.8 | 142.4 | 176.8 | 256.5 | – | |
| Z | c | kNm/rad | 78.8 | 122.8 | 137 | 223.7 | 319.6 | |
| U | c | kNm/rad | – | – | 107.6 | – | – | |
| Moment of inertia of the rotary group | JTW | kgm2 | 0.0066 | 0.0097 | 0.0149 | 0.0232 | 0.0444 | |
| Maximum angular acceleration | α | rad/s² | 24000 | 21000 | 18000 | 14000 | 11000 | |
| Case volume | V | l | 1.5 | 1.3 | 1.5 | 2.1 | 3.1 | |
| Weight (without through drive) approx. | m | kg | 38 | 50 | 60 | 80 | 101 | |
Specifications:
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Warranty
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1 Year
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Model
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SY-A4VG
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Place of Origin
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China
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Type
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Costruction machinery piston pump
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Color
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Available any color | |||
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HS Code
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8413503190 | |||
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Application
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excavator, road rollers, pavers
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Feature
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High Quality
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Delivery Time
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15-30 Days after Payment
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MOQ
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1 Piece
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Applications:
Competitive Advantage:
1. Closed-circuit piston pump with 400 bar pressure ensures stable power for mining machinery under heavy loads, integrated relief valves prevent system overload.
2. Swashplate axial piston pump enables infinite flow adjustment and smooth reversal for marine propulsion, achieving precise bidirectional flow control.
3. High-pressure piston pump with dual relief valves handles pressure spikes in tunnel boring machines, integrated boost pump ensures reliability in complex geology.
4. Closed-circuit energy recovery in axial piston pump reduces energy consumption for port cranes, swashplate angle control enhances operational efficiency.
5. Electrically controlled piston pump integrates with PLC for precise pitch system response in wind turbines, multi-position installation adapts to spatial constraints.
FAQ:
Q: Are you trading company or manufacturer?
Re: We are a manufacturer.
Q: How long is the Warranty?
Re: One-year warranty.
Q: What is your payment terms?
Re: 30% deposit against production, 70% balance before shipping.
Q: How about the delivery time?
Re: Regular Models within 7 days, customiszed models and bulk order within 15-30 days.