Performance specification

Overview

Outer dimensions

Brushless motor:

This is the most commonly used type of motor in the mold industry, except for brushless motors. Brushless DC motors do not use mechanical brush devices and adopt square wave self-control permanent magnet synchronous motors. Hall sensors are used instead of carbon brush commutators, and neodymium iron boron is used as the permanent magnet material for the rotor, which has significant advantages in performance compared to ordinary traditional DC motors. It has advantages such as high efficiency, low energy consumption, low noise, ultra long service life, high reliability, servo control, and stepless frequency conversion speed regulation. As for its disadvantages... it is more expensive and difficult to maintain than those with brushes, and is widely used in aircraft models, high-speed vehicle models, and ship models.

However, a single brushless motor is not a complete power system, and the brushless motor must be controlled by a brushless controller, that is, an electrical regulator, to achieve continuous operation. A regular carbon brush motor rotates its winding, while a brushless motor rotates both an outer rotor structure and an inner rotor structure using magnets. So any motor is composed of a stator and a rotor together.

The stator of a brushless motor is the part that generates a rotating magnetic field and can support the rotor for rotation. It is mainly composed of silicon steel sheets, enameled wires, bearings, and supporting components; The rotor, on the other hand, is a component that adheres to neodymium iron boron magnets and rotates under the action of the stator's rotating magnetic field. It is mainly composed of a shaft, magnet, and support components. In addition, the number of magnetic poles composed of the stator and rotor also affects the speed and torque of the motor.

The front cover, middle shell, and rear cover of a brushless motor are mainly integral structural components, which play a role in building the overall structure of the motor. However, the outer casing of the brushless motor with an outer rotor is also the magnetic path of the magnet, so the casing must be composed of a magnetic conductive material. The outer shell of the inner rotor is only a structural component, so there is no material limitation. However, the inner rotor motor has an additional rotor core compared to the outer rotor motor, which also serves as a magnetic circuit path.

Magnet: It is installed on the rotor and is an important component of a brushless motor. The vast majority of performance parameters of a brushless motor are related to the magnet, including power, speed, torque, etc.

Silicon steel sheet: It is an important component of slotted brushless motors. Of course, slotted brushless motors do not have silicon steel sheets, but currently the vast majority of brushless motors have slots. Its main function in the entire system is to reduce magnetic resistance and participate in magnetic circuit operation.

Shaft: It is the direct force bearing part of the motor rotor, and the hardness of the shaft must meet the requirements of high-speed rotation of the rotor.

Bearing: It is a guarantee for smooth operation of the motor. Bearings can be divided into sliding bearings and rolling bearings, and rolling bearings can be further divided into ten categories: deep groove ball bearings, needle roller bearings, and angular contact bearings. Currently, most brushless motors use deep groove ball bearings.

Pictures