The actual DC motor has multiple coils, and each coil is connected to a pair of commutators Some motors do not use permanent magnets, but use electromagnets to produce a stronger magnetic field Commutator material and model characteristics:
1. Casing: made of high rigidity fc-25 cast iron;
2. Gear: made of high-quality and high-purity alloy steel 50crmnt through quenching and tempering, carburization, quenching and grinding;
3. Main shaft: 40Cr quenched and tempered with high-quality and high-purity alloy steel, with high suspended load capacity. Working principle of commutator commutator is the original component of DC permanent magnet series motor in order to make the motor rotate continuously. Structurally, the commutator is surrounded by several contact pieces, which are respectively connected to each tap on the rotor, and the outside is connected with two electrodes, which is called the brush to contact it, and only two of them are contacted at the same time. The commutator is made of two copper half rings with a gap in the middle. The current direction can be changed by the commutator cooperating with the commutation of the brush.
4. Bearing: equipped with tapered roller bearing with heavy load capacity;
5. Oil seal: imported double lip oil seal, with high dust and oil leakage resistance.
Usage: the commutator is one of the indispensable main components of the liquid flow standard device. It is installed on the upper part of the metering container to realize the reversing function.