Shenzhen Changheng Hydraulic Equipment Co., Ltd
What is the use of bearings on hydraulic gear pumps?
What is the use of bearings on hydraulic gear pumps?
The needle roller bearings widely used in hydraulic gear pumps currently have many advantages: high load-bearing capacity;.
But at the same time, it also has many disadvantages: high noise, large external dimensions, and inconvenient overall structural layout; Especially in hydraulic gear pumps, longer needle roller bearings are required, which makes the bearing performance sensitive to manufacturing and assembly accuracy, requires high needle roller accuracy, and the heat treatment process specifications are also quite strict; The current type of wave needle bearing is a non-standard component that requires specific customization and incurs high costs.
In recent years, with the gradual improvement and maturity of research and manufacturing technology for DU bearings in China, their load-bearing capacity and service life have correspondingly increased, while prices have also rapidly declined and their applications have become increasingly widespread. Generally, the allowable specific pressure of DU bearings can be stabilized at 34MPa. If the structure is reasonable and sufficient lubrication is ensured, the allowable specific pressure can be stabilized at 44MPa, and the maximum allowable specific pressure of bearings can reach 58MPa.
The substrate of DU bearings is low-carbon cold-rolled steel plate, the intermediate layer is sintered spherical bronze powder, and the friction surface layer is rolled modified polytetrafluoroethylene. The wall thickness of the shaft sleeve is 0.7-2.5mm, and the thickness of the friction surface layer is 0.02-0.06mm. Tin plating and copper plating can be used for anti-corrosion of the steel back.
Bearings can work without lubrication, with low resistance, wear resistance, and long service life, making them more suitable for specific complex working conditions of gear oil pump bearings. Thin walled structure has the advantages of compact structure, light weight, and small volume, which makes the structure of the gear oil pump more reasonable and the structural design more convenient. For example, the size of the gear shaft neck can be increased to enhance the overall strength and rigidity of the gear shaft.
The use of DU bearings in hydraulic gear pumps has achieved the goal of increasing the rated pressure of the gear oil pump, reducing noise, enhancing impact resistance, and increasing service life.
The needle roller bearings widely used in hydraulic gear pumps currently have many advantages: high load-bearing capacity;.
But at the same time, it also has many disadvantages: high noise, large external dimensions, and inconvenient overall structural layout; Especially in hydraulic gear pumps, longer needle roller bearings are required, which makes the bearing performance sensitive to manufacturing and assembly accuracy, requires high needle roller accuracy, and the heat treatment process specifications are also quite strict; The current type of wave needle bearing is a non-standard component that requires specific customization and incurs high costs.
In recent years, with the gradual improvement and maturity of research and manufacturing technology for DU bearings in China, their load-bearing capacity and service life have correspondingly increased, while prices have also rapidly declined and their applications have become increasingly widespread. Generally, the allowable specific pressure of DU bearings can be stabilized at 34MPa. If the structure is reasonable and sufficient lubrication is ensured, the allowable specific pressure can be stabilized at 44MPa, and the maximum allowable specific pressure of bearings can reach 58MPa.
The substrate of DU bearings is low-carbon cold-rolled steel plate, the intermediate layer is sintered spherical bronze powder, and the friction surface layer is rolled modified polytetrafluoroethylene. The wall thickness of the shaft sleeve is 0.7-2.5mm, and the thickness of the friction surface layer is 0.02-0.06mm. Tin plating and copper plating can be used for anti-corrosion of the steel back.
Bearings can work without lubrication, with low resistance, wear resistance, and long service life, making them more suitable for specific complex working conditions of gear oil pump bearings. Thin walled structure has the advantages of compact structure, light weight, and small volume, which makes the structure of the gear oil pump more reasonable and the structural design more convenient. For example, the size of the gear shaft neck can be increased to enhance the overall strength and rigidity of the gear shaft.
The use of DU bearings in hydraulic gear pumps has achieved the goal of increasing the rated pressure of the gear oil pump, reducing noise, enhancing impact resistance, and increasing service life.
