Brand Name: | SY Hydraulic |
Model Number: | SY-A4VG |
MOQ: | 1pc |
Price: | USD 2000-6000 / pc |
Payment Terms: | T/T |
Supply Ability: | 500 pcs per month |
Construction Machinery Piston Pump Corrosion-Resistant Coating 3050 RPM Rating
Features:
1. Swashplate-type axial piston variable pump design
2. Application in closed-circuit hydrostatic drive
3. Flow proportional to drive speed and displacement
4. Infinitely variable flow via swashplate angle adjustment
5. Smooth flow direction reversal via neutral swashplate position
6. Optimized rotating group design for axial pistons
7. High power density with compact construction
8. 450 bar maximum operating pressure capability
9. Multi-directional load-bearing drive shaft design
10. Integrated swashplate angle sensor interface
Technical data:
Size | NG | 56 | 71 | 90 | 125 | 180 | ||
Geometric displacement, per revolution |
variable pump | Vg max | cm3 | 56 | 71 | 90 | 125 | 180 |
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:
Warranty |
1 Year |
Model |
SY-A4VG |
Place of Origin |
China |
Type |
Costruction machinery piston pump |
Color |
Available any color |
HS Code |
8413503190 |
Application |
excavator, road rollers, pavers |
Feature |
High Quality |
Delivery Time |
15-30 Days after Payment |
MOQ |
1 Piece |
Applications:
Competitive Advantage:
1. Built for extreme reliability and high performance, the A4VG series excels in delivering precise, variable hydraulic power through advanced control systems, integrated safety measures, and optimized fluid dynamics, making it a highly efficient piston pump that reduces downtime, maintenance costs, and energy consumption across industrial and mobile applications every day.
2. Closed-circuit piston pump with 350 bar pressure ensures stable power for mining machinery under heavy loads, integrated relief valves prevent system overload
3. Swashplate axial piston pump enables infinite flow adjustment and smooth reversal for marine propulsion, achieving precise bidirectional flow control
4. High-pressure piston pump with dual relief valves handles pressure spikes in tunnel boring machines, integrated boost pump ensures reliability in complex geology
5. Closed-circuit energy recovery in axial piston pump reduces energy consumption for port cranes, swashplate angle control enhances operational efficiency
The Analysis For Rexroth A4VG Closed Circuit Piston Pump Common Breakdown :
1. In this axial piston pump, operation under extreme ambient temperatures can cause instability due to material expansion, fluid viscosity changes, and potential sensor inaccuracies, resulting in fluctuating performance, increased wear, and potential system shutdown, which necessitates thermal management enhancements, accurate temperature compensation, and robust design modifications for reliable operation consistently.
2. In this hydraulic pump, deviations in manufacturing tolerances or assembly misalignments can cause internal leakage between chambers, resulting in reduced efficiency, unbalanced pressure distribution, and accelerated component wear, thereby requiring detailed quality inspections, precision reassembly, and adherence to strict tolerance standards to restore optimal performance and prevent recurring issues promptly.
3. In this piston pump, the presence of abrasive particles in the hydraulic fluid can cause accelerated wear on internal components such as valves, pistons, and seals, leading to decreased performance, leakage issues, and system failure, which necessitates effective filtration, regular fluid analysis, and timely component replacement to ensure reliability to ensure reliability.