Brand:Rexroth
Model:Piston pump
Drive mode: electric pump
Medium temperature type: room temperature pumps
Material: cast iron
Maximum outlet pressure type high pressure pump: (32MPa ≤ Pd <100MPa)
Vane pump impeller stage number: single-stage pumps
Vane pump suction mode: single suction pump
Vane pump impeller form: semi-open impeller
Vane pump casing type: segmented type
Vane pump pump shaft position: horizontal pumps
Structure type: axial flow
REXROTH vane pumps common anomalies
First, the coupling installation is not correct
1. As the coupling between the shaft and the shaft is too small or there is no clearance, when the force is too large, the bearing will be damaged, resulting in initial damage to the bearing affecting the service life of all pump cores. Secondly, if the coupling is installed without a certain axial clearance, the pump is screwed directly to the pump sleeve, so that the bearings are subjected to axial stress, if the shaft is subjected to axial stress in the normal cycle, the bearings will be quickly damaged, resulting in eccentricity and the pump core, the surface layer looks like the pump core is out of order, but in fact the initiation of the bearings.
Second, the coaxiality exceeds the difference
If the value exceeds the predetermined installation of concentricity, and make all the bearings eccentric pump core initial damage, the shaft will be cut off at the head of the spindle away from the shaft thick, in general concentricity control ≦ 0.1mm or so as well.
Third, the oil is very dirty
As the oil tank is not a sealed state, the surrounding dust and impurities mixed into the oil will lead to the cleanliness of the oil exceeds the standard. If the filter precision is not enough or there is no filter, the pump core will be scratched and damaged quickly.
Fourth, the oil deterioration
1. Due to the use of hydraulic oil or restructuring oil in the oil phase, the surface layer of the pump core components is black or viscose, impurities in the oil, --- and corrosive will lead to initial damage to the pump, the service life of the pump core due to the lack of lubrication and abrasion resistance and --- reduced, even if the vane and the pump core is stuck and can not be moved.
2. anti-wear hydraulic oil as outlined by the oil companies Use life of two thousand - three thousand hours six months, when the environment can be - - to increase the six thousand hours about 1 year, therefore, it is recommended that customers change a new oil every year.
Four, the oil temperature is too high
1. Due to the lack of installation of cooling equipment, the machine in continuous use of the oil temperature will continue to rise. If the oil temperature normally reaches 70 degrees or more, the life of the pump will - shorten. Generally speaking, it will be damaged in six months to a year.
Five, water in the oil
1. In water-cooled equipment, due to the sealing performance is not --- so that water into the oil, the oil is milky white emulsion, the gold part of the internal parts of the oil pump rust or local rust corrosion, the pump will accelerate the wear state in high-speed rotation, reducing the service life of the pump, the pump's shaft seal in the initial stage will also be damaged, resulting in oil leakage of the pump shaft.
Sixth, switch the direction of the oil port
1, when the direction of the port is not suitable for inexperienced users to adjust their own, no pump center Shaw inserted into the Shaw hole to rotate and pull out caused by, at this time, the oil pump suction port space is small, the oil absorption is hindered by the oil suction is not smooth, as follows: a large noise, variance, long-term use of the oil will make the oil temperature rises too quickly, the life expectancy will be reduced by the corrugated curve of the stator within the impact. Next, when rotating the seal will be cut edge or screw unevenly also lead to oil leakage phenomenon.