The main elements of the anchor are a round core, consisting of a set of electrical steel plates and a winding wound in a certain way in its grooves. Place two windings of the anchor in each of the grooves according to a special scheme . The first and last turns of one of the windings are in one groove and are closed on one lamella.
The core is pressed against the rotor , which rotates under the action of forces arising in the electromagnetic field formed by the armature windings and the stator coils working with it in a pair. In angle grinders, the armature is a unit with a drive gear located at one end of the shaft and a collector unit at the opposite end.
Visual inspection
Even with a full arsenal of devices for checking the anchor's electrical circuit, never neglect a visual inspection . A mandatory first step in the entire diagnostic process. A careful look will reveal signs by which a user israel telegram data familiar with the design and operating principles of the rotor will determine the nature of the malfunction.
Charred traces and the presence of a specific smell are the cause of burnt insulation and, ultimately, damage to the winding wires. You should pay attention to crumpled or swollen turns , which may indicate the presence of breaks in this place. Windings may contain solder particles , which are the source of a short circuit.
Violations of contacts of windings with a collector are detected by burnt lamellas . Damage to the collector itself is diagnosed visually. Raised, worn or burnt plates.
Causes of malfunctions
Rotor failure can be caused by improper operation of the power tool , which is represented by the following factors:
The permissible continuous operating time has been exceeded, which is one of the main reasons for the failure of household angle grinders.