The hydraulic system of the circle making machine consists of a three-phase communication motor, three solenoid valves, an oil gauge, etc. Its main functions include:

1. Three phase communication motor: Three phase (three live wires) 380V, 2.2KW, 50HZ communication motor.
2. Slow valve: During machine operation, there are two speeds: fast and slow. The slow valve is an oil valve that controls the slow wire feeding of the machine.
3. Forward valve: The forward valve, also known as the fast valve, is an oil valve that controls the machine to quickly feed lines.
4. Unloading valve: an oil valve that controls the extraction or return of oil in the oil circuit.
5. Terminal box for three-phase communication motor: The terminal box for the motor, which contains wiring terminals in a star or delta connection method.
6. Valve body (valve seat): Control the flow direction of the oil circuit.
7. Knife valve: an oil valve that controls the punching and cutting of iron wires.
8. Rotary valve: Control the wire feeding wheel to rotate backwards in manual mode.
9. Oil gauge: indicating the amount of oil in the tank.
10. Oil filling hole: Oil filling hole.
11. Oil discharge port: Release the hydraulic oil port and check the status of the oil valve coil indicator light.