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High-Performance VG Internal Gear Pump for Servo Systems - China Suppliers & Factory Solutions
Main Features
Adopting axial and radial pressure compensation design to maintain high volumetric efficiency even at low speed and low viscosity.
Ultra-low noise, using high-strength cast iron and a unique internal noise reduction design, make the noise lower.
Very low flow and pressure pulsation, stable flow and pressure output can still be maintained at low speeds.
High pressure design, the maximum working pressure can reach 35MPa.
Wide speed range, the highest speed can reach 3000r/min.
Can be combined arbitrarily to form a double pump.
It is not sensitive to oil pollution and has a long service life.
It can be widely applied to hydraulic systems in industries such as plastic machines, shoe machines, die-casting machinery and forklifts, and especially suitable for energy-saving systems driven by servo inverters.
Model Designation
| VG1 | -63 | R | E | W | -A1 |
| Series | ml/r Displacement |
Rotation | Shaft type | Sealing material | Design number |
| VGHO | 003、004、005 | Viewed from shaft end of pump R=Right hand for clockwise L=Left hand for counter-clockwise |
K=Straight key shaft | W=(Buna)NBR V=FKM |
1K |
| VG0 | 8、10、13、16、20、25、28 | E=Straight key shaft R=SAE Spline shaft |
A1 | ||
| VG1 | 25、32、40、50、63、50H、63H | ||||
| VG2 | 80、100、125、145、160 |
Technical Data
| Series | ml/r Displacement |
ml/r Theory Displacement |
Mpa Rated Pressure |
Mpa Max.pressure |
r/min Max.speed |
kg Weight |
| VGHO | 003 | 3 | 33 | 40 | 4200 | 4.6 |
| 004 | 4 | 4.8 | ||||
| 005 | 5 | 4.8 | ||||
| VGO | 8 | 8.2 | 31.5 | 35 | 3000 | 4.6 |
| 10 | 10.2 | 4.8 | ||||
| 13 | 13.3 | 4.9 | ||||
| 16 | 16.0 | 5.2 | ||||
| 20 | 20.0 | 25 | 30 | 5.6 | ||
| 25 | 24.0 | 6.0 | ||||
| 28 | 27.0 | 6.4 | ||||
| VG1 | 25 | 25.3 | 31.5 | 35 | 14.5 | |
| 32 | 32.7 | 15 | ||||
| 40 | 40.1 | 16 | ||||
| 50 | 50.7 | 17 | ||||
| 63 | 63.7 | 25 | 30 | 18.5 | ||
| VG2 | 80 | 81.4 | 31.5 | 35 | 43.5 | |
| 100 | 100.2 | 45.5 | ||||
| 125 | 125.3 | 48 | ||||
| 145 | 145.2 | 25 | 28 | 50 | ||
| 160 | 162.8 | 21 | 26 | 52 |
| Model | L1 | L2 | A | B | C | D | E | F | G |
| VGO-08 | 107 | 54 | 38.1 | 17.5 | φ13 | M8 Depth 13 | 47.6 | 22.2 | φ19 |
| VGO-10 | 111 | 56 | 52.4 | 26.2 | |||||
| VG0-13 | 117.5 | 59.25 | |||||||
| VGO-16 | 123 | 62 | |||||||
| VG0-20 | 131 | 66 | 47.6 | 22.2 | φ18 | M10 Depth 15 | 58.7 | 30.2 | φ26 |
| VG0-25 | 139 | 70 | φ19 | φ28 | |||||
| VG0-28 | 145 | 73 |
| Model | L1 | L2 | A | B | |
| VG1-25 | 139 | 73 | 47.6 | 22.2 | φ18 |
| VG1-32 | 146 | 76.5 | |||
| VG1-40 | 153 | 80 | 52.4 | 26.2 | φ20 |
| VG1-50 | 163 | 85 | |||
| VG1-63 | 177 | 92 | |||
| VG1-50H | 163 | 85 | see page 11 oil port size | ||
| VG1-63H | 177 | 92 | |||
| Model | L1 | L2 | A | B | D | E | F | G | H | |
| VG2-80 | 204 | 109.5 | 69.9 | 35.7 | φ32 | M12 Depth 20 | 77.8 | 42.9 | φ51 | M12 Depth 20 |
| VG2-100 | 213 | 114 | ||||||||
| VG2-125 | 225 | 120 | 79.4 | 36.5 | φ38 | M16 Depth 25 | 88.9 | 50.8 | φ63.5 | |
| VG2-145 | 235.5 | 124.75 | ||||||||
| VG2-160 | 243 | 129 | 106.4 | 61.9 | φ76 | M16 Depth 25 |
| Model | Specifications | S | A1 | B1 | C1 | Corresponding flange |
P | A2 | B2 | C2 | Corresponding flange |
| VGO | 8 | 19 | 47.6 | 22.2 | M10 Depth 15 |
F06 | 13 | 38.1 | 17.5 | M8 Depth 13 |
F04 |
| 10 | 52.4 | 26.2 | F08 | ||||||||
| 13 | |||||||||||
| 16 | |||||||||||
| 20 | 26 | 58.7 | 30.2 | F10 | 18 19 |
47.6 | 22.2 | M10 Depth 15 |
F06 | ||
| 25 | 28 | ||||||||||
| 28 | |||||||||||
| VG1 | 25 | 32 | 58.7 | 30.2 | M10 Depth 17 |
F10 | 18 | 47.6 | 22.2 | M10 Depth 17 |
F06 |
| 32 | |||||||||||
| 40 | 20 | 52.4 | 26.2 | F08 | |||||||
| 50 | |||||||||||
| 63 | |||||||||||
| 50(H) | 38 | 69.9 | 35.7 | M12 Depth 20 |
F12 | ||||||
| 63(H) | 51 | 77.8 | 42.9 | F16 | |||||||
| VG2 | 80 | 51 | 77.8 | 42.9 | M12 Depth 20 |
F16 | 32 | 69.9 | 35.7 | M12 Depth 20 |
F12 |
| 100 | |||||||||||
| 125 | 63.5 | 88.9 | 50.8 | F20 | 38 | 79.4 | 36.5 | M16 Depth 25 |
F14 | ||
| 145 | |||||||||||
| 160 | 76 | 106.4 | 61.9 | M16 Depth 25 |
F24 |
Frequently Asked Questions (FAQ)
Q:
What is the maximum working pressure of the VG series internal gear pump?
The VG series features a high-pressure design, allowing the maximum working pressure to reach up to 35MPa.
Q:
How does the pump maintain volumetric efficiency at low speeds?
It utilizes a specialized axial and radial pressure compensation design to ensure high volumetric efficiency is maintained even under low speed and low viscosity conditions.
Q:
What makes the VG series pump operate with ultra-low noise?
The pump is constructed from high-strength cast iron and incorporates a unique internal noise reduction design that significantly lowers operating noise levels.
Q:
Are these gear pumps sensitive to oil pollution?
No, the VG series design is highly insensitive to oil pollution, which helps in extending the overall service life of the hydraulic system.
Q:
What are the primary industrial applications for the VG internal gear pump?
It is widely used in hydraulic systems for plastic machines, shoe machines, die-casting machinery, and forklifts. It is particularly well-suited for energy-saving systems driven by servo inverters.
Q:
Can these pumps be combined to form a double pump configuration?
Yes, the VG series gear pumps can be combined arbitrarily to form a double pump configuration to meet diverse system requirements.