| Characteristics of AZPU series gear pump: |  |
| - nominal pressure 280 bar | |
| - Adopting sliding bearings, suitable for heavy-duty applications | |
| - The drive shaft meets ISO or SAE requirements | |
| - Can achieve the combination of multiple pumps | |
| - Pipeline oil port: connecting flange | |
| - Optimized pressure pulsation, thereby reducing system noise emissions and vibration input sources | |
| - Extended service life through reinforced shaft design and pump cover material | |
| - Achieve sustained high quality through large-scale production | |
| - Multiple configuration variants available |
AZPU series gear pump displacement method:
The enclosed area of the displacement gear pair is coordinated with the rotation mode of the transmission shaft, thus forming the flow characteristic curve (schematic) in the left figure. In a standard hydraulic pump, paired gears will oscillate once on this characteristic curve every time they mesh. After adopting the double tooth surface structure, the flow pulsation of this silent pump was reduced by 75% - correspondingly, the flow pulsation on downstream system components was also reduced - and the new frequency was equal to twice the base frequency. During this process, the gear pair presents a smaller backlash on the rear tooth surface, providing hydraulic sealing not only on the front tooth surface of the passive gear, but also on the rear tooth surface. In this way, liquid flow discharge is alternately generated on the front and rear tooth surfaces. Moreover, by adjusting the shape of the measuring slot, the hydraulic action line can be extended to half of the standard hydraulic pump.
AZPU series gear pump structure:
This external gear pump is mainly composed of a pair of gears supported on bearing bushings or bearings (depending on the different series), and a pump housing equipped with a front cover and a rear cover. The drive shaft extends outward from the front cover of the pump and is sealed with a shaft sealing ring. The supporting forces on the bearings are absorbed by specialized sliding bearings; Due to the sufficient elastic force of sliding bearings, surface contact is formed instead of linear contact. As a result, the excellent wear resistance of the pump is also ensured, especially during low-speed operation. This pair of gears has 12 teeth each, which can maintain the minimum flow pulsation and noise generated by the gear pump
.
Internal sealing is achieved through compensating forces, which are proportional to the output pressure. By utilizing this compensation method, optimal efficiency can be ensured. By inputting working pressure to the rear of the bearing liner, the sealing area between the gear teeth and the bearing can be controlled. These specialized seals form the boundary of this area. For these radial clearances at the top of the gear teeth, sealing is achieved by pushing the gear towards the internal force of the pump casing.
AZPU series gear pump specifications:
Structure: External gear pump
Installation: Flange or through bolt with sleeve
Pipeline oil port: flange
Rotation direction (from the perspective of the axis): clockwise or counterclockwise, can only drive this hydraulic pump in the rotation direction shown in the diagram
Installation location: Any part
Load on the shaft: radial and axial forces, to be determined after consultation
Environmental temperature range: -30 ℃+ 80 ℃, using NBR seals
–20℃...+ 110 ℃, using FKM seals
Hydraulic oil: Mineral oil should comply with DIN 51 524, 1-3; However, under higher load conditions, at least HLP hydraulic fluid that meets the recommended standards should be used;
- Meets the requirements of RC 90220;
After consultation, other working fluids can be used
Viscosity: 12... 800 mm2/s, allowable range
20... 100 mm2/s, recommended range
... 2000 mm2/s, the allowable range for starting the pump
Hydraulic oil temperature range: - 30℃...+ 80℃
–20℃...+ 110 ℃, using FKM seals
Filtration: Cleanliness level of at least 20/18/15, in compliance with ISO 4406 (1999)
Gear pump AZPU series model and order number:
Model Order Number
AZPU-22-022LCB20MB 0517725322
AZPU-22-022LDC07KB 0517725329
AZPU-22-022RCB20MB 0517725026
AZPU-22-022RDC07KB 0517725033
AZPU-22-025LCB20MB 0517725323
AZPU-22-025LDC07KB 0517725330
AZPU-22-025RCB20MB 0517725027
AZPU-22-025RDC07KB 0517725034
AZPU-22-028LCB20MB 0517725324
AZPU-22-028LDC07KB 0517725331
AZPU-22-028RCB20MB 0517725028
AZPU-22-028RDC07KB 0517725035
AZPU-22-032LCB20MB 0517725325
AZPU-22-032LDC07KB 0517725332
AZPU-22-032RCB20MB 0517725029
AZPU-22-032RDC07KB 0517725036
AZPU-22-036LCB20MB 0517725326
AZPU-22-036LDC07KB 0517725333
AZPU-22-036RCB20MB 0517725030
AZPU-22-036RDC07KB 0517725037
AZPU-22-040LCB20MB 0517725327
AZPU-22-040LDC07KB 0517725334
AZPU-22-040RCB20MB 0517725031
AZPU-22-040RDC07KB 0517725038
AZPU-22-045LCB20MB 0517725328
AZPU-22-045LDC07KB 0517725335
AZPU-22-045RCB20MB 0517725032
AZPU-22-045RDC07KB 0517725039
AZPU-22-050LCB20MB 0517825301
AZPU-22-050LDC07KB 0517825304
AZPU-22-050RCB20MB 0517825001
AZPU-22-050RDC07KB 0517825004
AZPU-22-056LCB20MB 0517825302
AZPU-22-056LDC07KB 0517825305
AZPU-22-056RCB20MB 0517825002
AZPU-22-056RDC07KB 0517825005
AZPU-22-063LCB20MB 0517825303
AZPU-22-063LDC07KB 0517825306
AZPU-22-063RCB20MB 0517825003
AZPU-22-063RDC07KB 0517825006
