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SY-A4VG
Displacement specification:
45/65/85/110/145/175/210/280
Rated pressure:
45 MPa
Peak pressure:
50 MPa
Classification:
Key words:
Vic hydraulic, hydraulic pump
Product Advantages
Axial piston variable pump with swash plate design, used for hydrostatic transmission in closed circuits.
Flow is proportional to drive speed and displacement.
Stepless flow adjustment is achieved by adjusting the angle of the rotating swash plate.
When the swash plate passes through the middle position, the hydraulic oil flow direction changes smoothly.
Wide range of highly adjustable control devices with different control and adjustment functions, suitable for all important applications.
Two pressure relief valves are installed on the high-pressure side to prevent overload of the hydrostatic transmission (pump and motor).
The high-pressure relief valve can also be used as a make-up valve.
The built-in make-up pump acts as both a make-up pump and a control pump.
The maximum make-up pressure is limited by the built-in low-pressure relief valve.
Suitable for high-pressure levels with high power density and high efficiency.
Technical Specifications
| Specifications | NG | 45 | 65 | 85 | 110 | 145 | 175 | 210 | 280 | |
| Displacement (per revolution) | ||||||||||
| Variable pump | V g max | cm³ | 45.3 | 65.2 | 85.4 | 110.4 | 145.3 | 175.4 | 210.6 | 280.3 |
| Make-up pump (at p=20bar) | V g Sp | cm³ | 11 | 14.5 | 19 | 24.5 | 32 | 39 | 46 | 60 |
|
Standard rotating body Speed 1) |
||||||||||
| Maximum displacement is Vgmax | n nom S rpm | 4300 | 3800 | 3300 | 3150 | 2850 | 2650 | 2500 | 2400 | |
| At △p≥40bar (t<15 s) | n max 40 | rpm | 4500 | 4000 | 3500 | 3350 | 3000 | 2800 | 2650 | 2550 |
| Minimum speed | n min | rpm | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 |
|
High-speed rotating body Speed 1) |
||||||||||
| Maximum displacement is Vgmax | n nom H | rpm | - | - | - | 3400 | 3050 | 3000 | - | - |
| At △p≥40bar (t<15s) | n max 40 | rpm | - | - | - | 3600 | 3200 | 3100 | - | - |
| Minimum speed | n min | rpm | - | - | - | 500 | 500 | 500 | - | - |
| Approximate weight (without through-shaft drive) | m | kg | 55 | 58 | 77 | 88 | 106 | 115 | 152 | 160 |
These values apply to:
-Within the optimal viscosity range V opt to 16 mm²/s
-Using mineral oil-based hydraulic oil
Industry Applications
Road machinery, flatbed trucks, trenchless machinery, lifting machinery, tunnel equipment, agricultural machinery, solid waste recycling, material handling, etc.
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