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Quality VG22D Hydraulic Gear Pump from China Suppliers - Reliable Factory Replacement for Rexroth Pgh-3X
Product Features
✓
The front and rear oil pumps adopt floating flower-splined coupling structure, with a unique grease formula to ensure stable performance, long life and low noise of the oil pump.
✓
The maximum displacement can be extended to 320CC, which provides enough choice space for motor and driver selection and model selection.
✓
The direction of oil outlet and suction outlet of oil pump is flexible and easy to install.
✓
Any displacement combination, to meet the needs of different working conditions.
Model Designation
| VG11D | -63 | -40 | R | E | W | -A1 |
| Series | ml/r Flow code of shaft end pump |
ml/r Flow code of cover end pump |
Rotation direction | Shaft type | Sealing material | Design number |
| VG10D | 25、32、40、50、63 | 8、10、13、16、 20、25 |
Viewed from shaft end of pump R=Right hand for clockwise L-Left hand for counter- clockwise |
E=Straight key shaft R=SAE Spline shaft |
W=(Buna) NBR V=FKM |
A1 |
| VG11D | 25、32、40、50、63 | 25、32、40、50、63 | ||||
| VG21D | 80、100、125、 145、160 |
25、32、40、50、63 | ||||
| VG22D | 80、100、125、 145、160 |
80、100、125、 145、160 |
| Front pump | L1 | L2 | Rear pump | |||||||||
| 80 | 100 | 125 | 145 | 160 | ||||||||
| L3 | L4 | L3 | L4 | L3 | L4 | L3 | L4 | L3 | L4 | |||
| 80 | 109.5 | 238.5 | 233 | 437 | ||||||||
| 100 | 114 | 247.5 | 237.5 | 446 | 242 | 455 | ||||||
| 125 | 120 | 259.5 | 243.5 | 458 | 248 | 467 | 254 | 479 | ||||
| 145 | 124.8 | 269 | 248.3 | 467.5 | 252.8 | 476.5 | 258.8 | 488.5 | 263.5 | 498 | ||
| 160 | 129 | 277.5 | 252.5 | 476 | 257 | 485 | 263 | 497 | 267.8 | 506.5 | 272 | 515 |
| Front pump | L1 | L2 | Rear pump | |||||||||
| 25 | 32 | 40 | 50 | 63 | ||||||||
| L3 | L4 | L3 | L4 | L3 | L4 | L3 | L4 | L3 | L4 | |||
| 80 | 110 | 231 | 205 | 380 | 208 | 387 | 211.5 | 394 | 216.5 | 404 | 223.5 | 418 |
| 100 | 114.0 | 240 | 209.0 | 389 | 213 | 396 | 216 | 403 | 221 | 413 | 228 | 427 |
| 125 | 120 | 252 | 215 | 401 | 218.5 | 408 | 222 | 415 | 227 | 425 | 234 | 439 |
| 145 | 125 | 262 | 220 | 411 | 223.3 | 418 | 227 | 425 | 232 | 435 | 238.8 | 448.5 |
| 160 | 129 | 270 | 224 | 419 | 227.5 | 426 | 231 | 433 | 236 | 443 | 243 | 457 |
| Front pump | L1 | L2 | Rear pump | |||||||||
| 25 | 32 | 40 | 50 | 63 | ||||||||
| L3 | L4 | L3 | L4 | L3 | L4 | L3 | L4 | L3 | L4 | |||
| 25 | 73 | 161 | 161 | 300 | ||||||||
| 32 | 76.5 | 168 | 164.5 | 307 | 168 | 314 | ||||||
| 40 | 80 | 175 | 168 | 314 | 171.5 | 321 | 175 | 328 | ||||
| 50 | 85 | 185 | 173 | 324 | 176.5 | 331 | 180 | 338 | 185 | 348 | ||
| 63 | 92 | 199 | 180 | 338 | 183.5 | 345 | 187 | 352 | 192 | 362 | 199 | 376 |
| Front pump | L1 | L2 | Rear pump | |||||||||||
| 08 | 10 | 13 | 16 | 20 | 25 | |||||||||
| L3 | L4 | L3 | L4 | L3 | L4 | L3 | L4 | L3 | L4 | L3 | L4 | |||
| 25 | 73 | 153.5 | 138.5 | 264.5 | 140.5 | 268.5 | 143.8 | 275 | 146.5 | 280.5 | 150.5 | 288.5 | 154.5 | 296.5 |
| 32 | 76.5 | 160.5 | 142 | 271.5 | 144 | 275.5 | 147.3 | 282 | 150 | 287.5 | 154 | 295.5 | 158 | 303.5 |
| 40 | 80 | 167.5 | 145.5 | 278.5 | 147.5 | 282.5 | 150.8 | 289 | 153.5 | 294.5 | 157.5 | 302.5 | 161.5 | 310.5 |
| 50 | 85 | 177.5 | 150.5 | 288.5 | 152.5 | 292.5 | 155.8 | 299 | 158.5 | 304.5 | 162.5 | 312.5 | 166.5 | 320.5 |
| 63 | 92 | 191.5 | 157.5 | 302.5 | 159.5 | 306.5 | 162.8 | 313 | 165.5 | 318.5 | 169.5 | 326.5 | 173.5 | 334.5 |
FAQ
Q1:
Can the two pump sections of the VG double pump have different displacements (flow rates)?
Yes, absolutely. A key feature of our VG double pump series is the ability to combine two cartridge assemblies (pump sections) with different displacements. This flexibility allows you to create a compact, custom flow solution perfect for applications like:
- Plastic Injection Molding Machines: High flow for fast mold closing, lower flow for high-pressure injection.
- Machine Tools: High flow for rapid traverse, lower flow for precise feed motion.
Q2:
How is the pressure rating handled for each section of the double pump?
Each pump section within the VG double pump has its own independent outlet port and is rated for its own maximum operating pressure (as listed in the technical specifications). This means:
- Circuit A can operate at its maximum rated pressure (e.g., 250 bar).
- Circuit B simultaneously operates at a different pressure (e.g., 150 bar), as determined by the load in each circuit and their respective pressure relief valves.
- The common shaft and bearings are designed to handle the combined loads from both sections.
Q3:
If one pump section fails, does the entire double pump unit need to be replaced?
No, in most cases, the entire unit does not need to be replaced. The modular design of the VG double pump allows for individual repair or replacement of the faulty cartridge assembly (pump section). This serviceability feature:
- Reduces Downtime: You can service only the failed section.
- Lowers Lifecycle Cost: It is more economical than replacing the complete pump assembly.
Q4:
Is the VG series double pump directly interchangeable with Rexroth PGH series?
Yes, our VG series is engineered to serve as a high-quality, dimensionally interchangeable replacement for Rexroth PGH-3X series hydraulic gear pumps. It matches the original mounting flanges, shaft configurations, and port sizes for a seamless drop-in replacement.
Q5:
What sealing materials are available for the VG double pump?
We offer two primary sealing options depending on your operating fluid and temperature requirements: NBR (Buna-N) seals (designated by code "W") for standard hydraulic oils, and FKM (Viton) seals (designated by code "V") for high-temperature applications or synthetic fluids.
Q6:
What are the benefits of the floating flower-splined coupling structure?
The floating spline coupling minimizes internal alignment errors between the front and rear pump shafts. Combined with our unique grease formula, it effectively reduces vibration, lowers operating noise levels, and prevents premature wear, ensuring a longer operational lifespan.