What is the working principle of the oil pump on the cutting machine

Hydraulic oil pump is the power source of the hydraulic system, we choose the hydraulic oil pump to meet the pressure and flow requirements of the hydraulic system, but also to take full account of reliability, life, maintainability and so on in order to select the hydraulic oil pump in the hydraulic system for long-term operation. There are many kinds of hydraulic pumps and their characteristics are quite different. Hydraulic oil pumps include vane pumps, gear pumps, plunger pumps and screw pumps. Generally used in the market are vane pumps, gear pumps and plunger pumps. And vane pump can be divided into variable vane pump, variable heat dissipation vane pump, variable vane pump with cooling pump and quantitative vane pump.