Motor accessories refer to the original parts of the motor assembled in the motor manufacturer, and the replaced parts due to improper use or wear are called motor accessories. Generally, the service life of accessories is not longer than that of original parts. Motor accessories can be divided into five parts.

The classification of motor accessories can be divided into motor stator, motor rotor, stator winding, motor shell, end cover, motor blade, bearing and other parts.

1,、Motor stator

Motor stator is an important part of generator and starter. Stator is an important part of motor. The stator consists of stator core, stator winding and frame. The main function of the stator is to generate the rotating magnetic field, while the main function of the rotor is to be cut by the magnetic line of force in the rotating magnetic field and then generate (output) current.

2、Motor rotor

Motor rotor: also a rotating part of the motor. The motor is composed of rotor and stator, which is used to realize the conversion of electrical energy and mechanical energy and mechanical energy and electrical energy. Motor rotor is divided into motor rotor and generator rotor.

3,、Stator winding

Stator windings can be divided into centralized and distributed types according to the winding shape and embedded wiring mode. The winding and embedding of centralized winding are relatively simple, but the efficiency is low and the operation performance is poor. At present, most of the stator windings of AC motor are distributed windings. According to different types, models and process conditions of coil winding, motors are designed with different winding types and specifications, so the technical parameters of the windings are not the same.

4,、Motor housing

Motor housing generally refers to the external casing of all electrical and electrical equipment. The motor shell is the protection device of the motor, which is made of silicon steel sheet and other materials by stamping and drawing technology. The surface anti rust and spray molding process can protect the internal equipment of the motor well. Main functions: dust proof, noise prevention and waterproof.

According to the material: the shell can be divided into metal shell, plastic shell, etc.

According to the use: generator shell, starter shell, other digital products motor shell.

5、Motor end cover

The cover is a back cover installed behind the motor and other casings, commonly known as "end cover". The cover is mainly composed of cover body, bearing and brush plate.

Whether the cover is good or bad directly affects the quality of the motor. Therefore, we should first understand what is called the standard of the quality of an end cover. A good end cover mainly comes from its heart -- brush blade. Its function is to drive the rotor to rotate. This part is the most critical part. How can we measure its quality? It mainly has the following standards:

1,、Not high,。

2、Not low,。

3,、It's not short。

4,、No cross,。

5、No bending,。

6,、No song。

7,、Motor blade

The fan blade of the motor is generally located at the tail of the motor, which is used for ventilation and cooling of the motor. It mainly acts on the tail of the AC motor, or is placed in the special ventilation duct of the DC and high voltage motor. The fan blade of explosion-proof motor is generally made of plastic.

According to the material classification: Motor blades can be divided into three types, and plastic blades, cast aluminum blades, cast iron blades.

7,、Bearing

Bearing is an important part of modern mechanical equipment. Its main function is to support the mechanical rotating body, reduce its friction coefficient in the process of motion, and ensure its rotation accuracy.

According to the different friction properties of moving elements, bearings can be divided into rolling bearings and sliding bearings. Among them, rolling bearing has been standardized and serialized, but compared with sliding bearing, its radial size, vibration and noise are larger, and its price is also higher.

Rolling bearing is generally composed of outer ring, inner ring, rolling element and cage. Strictly speaking, it is composed of outer ring, inner ring, rolling element, cage, seal and lubricating oil. It mainly has outer ring, inner ring and rolling element