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High-Performance 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
How does the VG series internal gear pump maintain high volumetric efficiency?
The pump adopts an axial and radial pressure compensation design, which allows it to maintain exceptionally high volumetric efficiency even under conditions of low speed and low viscosity.
What is the maximum working pressure and speed of the VG series pump?
The VG series gear pump features a high pressure design with a maximum working pressure of up to 35MPa and a wide speed range that can reach a maximum speed of 3000r/min.
Why does this pump have ultra-low noise levels?
It utilizes high-strength cast iron and a unique internal noise reduction design, which ensures extremely low noise and minimal flow/pressure pulsation during operation.
What applications and industries is the VG series pump suitable for?
It is widely used in hydraulic systems for plastic machines, shoe machines, die-casting machinery, and forklifts. It is particularly suitable for energy-saving systems driven by servo inverters.
What sealing materials and shaft types are available?
Sealing material options include W (Buna NBR) and V (FKM). Shaft configurations include K/E (Straight key shaft) and R (SAE Spline shaft) depending on the specific model series.
Can these gear pumps be combined for multi-flow requirements?
Yes, the VG series internal gear pumps can be combined arbitrarily to form a double pump to suit various hydraulic system configurations.