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VP22 Variable Displacement Vane Pump
Key words:Hydraulic tools
Details
Specification
Model Code
Installation and Use
1. Clockwise rotation is standard when viewed from the shaft end.
2. The pump shaft must be installed horizontally. To ensure correct alignment between the pump and motor shafts, the eccentricity between them must be kept within 0.05mm, and the eccentric angle error must be kept within 1°. Avoid adding radial and axial loads to the shaft end. In addition, please use sufficiently rigid material as the mounting bracket.
3. Fixed pipelines, especially the inlet pipe, must be sized according to the port dimensions; the inlet pipe must be strictly sealed and leak-proof.
The system should be equipped with a cooling device (if there is no cooling unit, the oil tank capacity should be increased)
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 50mm, to avoid bubble formation even at low positions. The pressure at the inlet should be -0.03 to +0.03MPa; if the pump is installed on the oil tank or above the oil tank cover, the suction height of the pump should
be less than 500mm.
4. The drainage connection must be directly piped to the oil tank and below the oil level, and the back pressure must not exceed 0.03MPa.
5. P-Q setting values at the factory:
· Flow setting: Maximum flow as shown in the catalog.
· Pressure setting: Minimum operating pressure range.
6. Flow and pressure adjustment:
When adjusting, first loosen the locking nut, then rotate the screw, and tighten the locking nut after adjustment.
· When the flow adjusting screw is rotated clockwise, the flow will decrease, and when rotated counterclockwise, the flow will increase.
· When the pressure adjusting screw is rotated clockwise, the pressure will increase, and when rotated counterclockwise, the pressure will decrease.
7. Thrust bolt
The thrust bolt is set during pump assembly and should not be adjusted.
8. Hydraulic oil:
· Use 30~50cSt (ISO VG32) hydraulic oil at 40℃.
· The operating temperature range of the hydraulic oil is 15~60℃. If the initial oil temperature is below 15℃, please use low-pressure operation to raise the oil temperature to 15℃.
9. The oil should be kept clean, and the pipelines and oil tank must be thoroughly cleaned. A precision filter with an accuracy of 25μm should be assembled in the system, and the oil cleanliness should be within NSA10; a filter with sufficient capacity (the rated flow rate should be more than twice the pump flow rate) should be fixed 50mm above the pump inlet, and the recommended accuracy is 100μm (150 mesh).
10. To ensure sufficient lubrication of the pump sliding surface, please fill the pump body before operation.
11. First use: Start the pump under no-load conditions, and repeatedly start and stop the motor several times to exhaust the air inside the pump and pipeline. Then maintain continuous operation for 10 minutes for better venting. For the venting pipe, install a vent valve.
Installation Connection Dimensions
◆ VP22 (1-key shaft)
◆ VP22 (2-spline shaft)
Str. Key shaft
Spline shaft
According to American ANSI B92.1 specifications, accuracy grade: Grade 5
| Module | D.P.16/32 |
| Pressure Angle | 30° |
| Number of Teeth | 9 |
| Pitch Diameter | Φ14.2875 |
| Maximum Diameter |  |
| Minimum Diameter | Φ11.811(MAX) |
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