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Study on Selection of Gear Oil Pump Bearing for Forklift Truck
Release time:
2020-01-07
At present, needle roller bearings widely used in forklift gear oil pumps have many advantages: high carrying capacity; low friction factor, low friction during starting and working, and high mechanical efficiency; it can be applied to high and low speeds at the same time; it can be applied Large temperature range; strong resistance to oil pollution.
At present, the needle roller bearings widely used in forklift gear oil pumps have many advantages: high carrying capacity; low friction factor, low friction during startup and work, and high mechanical efficiency; it can be applied to high and low speeds at the same time; Can be applied to a larger temperature range; strong resistance to oil pollution.
but at the same time it also has many shortcomings: large noise, large overall dimensions and inconvenient overall structure layout; Especially in forklift gear oil pumps, long needle roller bearings are required, resulting in sensitive bearing performance to manufacturing and assembly accuracy, high requirements for needle roller accuracy, and strict heat treatment process requirements. At present, this kind of wave needle bearing is a non-standard part and requires specific customization, the cost is higher.
In recent years, with the gradual improvement and maturity of my country's DU bearing research and development and manufacturing technology, its carrying capacity and service life have been increasing accordingly, while the price has also declined, and its application has become more and more extensive. Generally, the allowable specific pressure of DU bearing can be stabilized at 34MPa. If the structure is reasonable and enough lubrication is guaranteed, the allowable specific pressure can be stabilized at 44MPa, and the larger limit specific pressure of DU bearing can reach 58MPa. The matrix of
DU bearing is low-carbon cold-rolled steel plate, the middle layer is sintered spherical bronze powder, and the friction surface layer is rolled modified PTFE. The wall thickness of the shaft sleeve is 0.7~2.5mm, and the thickness of the friction surface layer is 0.020.06mm. Anti-corrosion of steel back can be tin plated and copper plated.
bearing can work under the condition of no lubrication, low resistance, wear resistance, long life, the more adapt to the gear oil pump bearing specific complex working conditions. The thin-walled structure has the advantages of compact structure, light weight and small size, and makes the structure of the gear oil pump more reasonable and the structure design is convenient. For example, the gear journal size can be increased to increase the overall strength and rigidity of the gear shaft.
forklift gear oil pump adopts DU bearing to increase the rated pressure of gear oil pump, reduce noise, increase impact resistance and increase service life.
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2020-12-10
Kunshan Jiafengsheng Precision Electronics Co., Ltd.
Contact: Hu Guang
Tel: 0512-50132658
Fax: 0512-50132758
Mobile Phone: 13812899484
Mailbox: huguang@ksjfs.cn
Address:
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