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20V vane pump, lower noise
Key words:Hydraulic tools
Details
Specification
| Subsidiary Series | Displacement Code | Geometry Displacement mL/r | Use anti-wear oil or Phosphate ester fluid | Water-ethylene glycol fluid | Oil-in-water emulsion | Minimum speed r/min | Weight Kilograms | |||
| Max. Pressure Megapascal | Max. Speed r/min | Maximum pressure Megapascal | Max. Speed r/min. | Max. Pressure Megapascal | Max. Speed r/min | |||||
| 20V | 2 | 7.5 | 14 | 1800 | 14 | 1500 | 7 | 1200 | 600 | 12 |
| 3 | 10.2 | |||||||||
| 4 | 12.8 | |||||||||
| 5 | 16.7 | 21 | 16 | |||||||
| 6 | 19.2 | |||||||||
| 7 | 22.9 | |||||||||
| 8 | 26.2 | |||||||||
| 9 | 28.8 | |||||||||
| 10 | 31.0 | |||||||||
| 11 | 35.0 | |||||||||
| 12 | 37.9 | 16 | 14 | |||||||
| 14 | 44.2 | 14 | ||||||||
Note: ① When the working fluid is phosphate ester fluid, use special seals (FPM). When ordering, add the prefix [F-] before the specified model.
②Transient (peak) pressure exceeding 10% of the maximum pressure rating can last for 0.5 seconds.
Model code
Installation and Use
1. During installation, the concentricity tolerance between the pump shaft and the motor must be less than 0.10 mm (TIR), the maximum allowable angular error must be less than 0.2 degrees, and a flexible coupling must be used; the pump shaft must not bear radial and axial loads; the bracket must be sturdy, rigid, and able to fully absorb vibration.
2. Fixed pipelines, especially the inlet pipeline, must be carried out according to the size of the interface, and a safety relief valve must be assembled in the system (inlet flow rate is between 0.5 and 1.5 m/s). The set pressure of the safety valve must not exceed the maximum pressure of the pump; the inlet pipeline must be strictly sealed and must not leak; the oil tank should be equipped with a diaphragm to separate bubbles and dirt from the oil; the oil return nozzle should be below the liquid level, with a minimum depth of 50 mm, even at low positions, to avoid the formation of bubbles.
3. Set the suction pressure at the pump inlet: hydraulic oil for hydraulic oil is +35~ -16.7 KPa. Hydraulic oil for water-ethylene glycol and phosphate ester is +35~ -10.1 KPa.
4. If the pump is installed on the oil tank or above the oil tank cover, the suction inlet height of the pump should be less than 500 mm.
5. The oil should be kept clean, the pipelines and oil tank must be thoroughly cleaned; a precision filter should be assembled in the system, with a recommended precision of 25μm, and the cleanliness of the oil should be within NSA12. A filter with sufficient capacity should be fixed 50 mm above the bottom of the oil tank at the pump inlet (the rated flow rate should be more than twice the pump flow rate), with a recommended precision of 100μm (150 mesh).
6. It is recommended to use anti-wear industrial hydraulic oil or automotive crankcase oil with the letter designation SC, SD, SE, or SF, with a viscosity grade of 32 to 68 cSt at 40℃.
Preferred viscosity at rated speed and pressure:
Minimum 13 cSt Maximum 54 cSt
Minimum 49℃ Maximum 65℃
7. Check the inlet, outlet and direction of rotation before starting the pump. After fixing the pump, manually rotate the pump shaft evenly and flexibly. It is best to add oil to the pump for the first use.
In the initial operation or operation after a long rest, the pump may have difficulty in sucking in liquid; in this case, a vent valve should be installed on the discharge side in advance, or the air should be discharged by slightly loosening the connection on the discharge side. When starting, operate the pump intermittently without load as much as possible.
8. Do not start the pump when the outlet pressure is lower than the inlet pressure. This will cause operating noise and blade instability.
9. When starting, if the viscosity of the oil is higher than the suitable viscosity (54 cSt), the pressure should be limited to 50% or less of the respective rated value until the system heats up.
Installation Connection Dimensions
◎ Str. Key shaft
| Model | Shaft cooling | A | B | C | D | E | F key Width × Length |
| 20V | 1 | 59 | 9.5 | 12.0 | 22.225/22.20 | 24.5/24.35 | 4.75×32 |
◎ Spline shaft
| Model | Shaft cooling | A | B | C | D | E | Spline data | ||||
| Number of teeth Number of teeth | Pitch | Large Diameter | Small Diameter | Square root Matching | |||||||
| 20V | 151 | 41.1 | 9.5 | 11.1 | 3.9 | 27.8 | 13 | 16/32 | 22.17/22.15 | 18.63/18.35 | Large Diameter matching |
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