With the increase of service time, there will be insufficient pump oil, even no pump oil and other faults in Rexroth gear pump. The main reason is that the wear of the relevant parts is too large. The wear parts of Rexroth gear pump mainly include the driving shaft and bushing, the center hole and pin of passive gear, the inner cavity and gear of pump housing, the end face of gear and pump cover, etc. When the main technical indicators of the lubricating oil pump fail to meet the requirements after wear, it should be disassembled and decomposed to find out the wear parts and extent, and take appropriate measures to repair them.
I. Repair of worn axle and bushing
After the wear of the driving shaft and bushing of Rexroth gear pump, the matching clearance will increase, which will certainly affect the oil quantity of