BakParts: Symptoms of a Faulty Armature

2015年11月19日星期四

Symptoms of a Faulty Armature

An armature is one of two principal components of an electrical machine usually in power tool such as Angle Grinder,Rotary Hammer,Demolition Hammer etc. The other component is the field magnet which creates a magnetic field that the armature can act upon. The two roles of the armature are to create a force, either linear or rotational, and to generate an electromotive force.

Armatures are widely used and there are many ways to tell if they have gone bad. Here we listed some of the Symptoms of a Faulty Armature:

Loss of Some Power

This symptom is easy to spot since the machine will not work properly anymore,such as a hammer with a faulty armature.

Many electronics function in this method and if you notice some power, but not full power your armature is most likely damaged.

Inspection Plug Brushes

If you check your inspection plugs and notice that the brushes are damaged, then the most likely cause is that the armature destroyed them.

You can confirm this for yourself by installing new brushes and checking to see if they get damaged as well.

Growler

A growler is an electrical device that can check motors for shorted coils. The growler creates a magnetic flux that will cause a shorted armature to put a current into the feeler.

If you have a bad armature the feeler will vibrate in tune to the current generated.

Amp Draw

Checking the amp draw of your starter is another simple method to test for a bad armature. The specifications may vary from vehicle to vehicle so you will need to check your car manual for the normal amp draw range. If the amp draw is overly high, that is a sign of a faulty armature.

try above ways to see if you have a faulty armature. wanna find a replacement armature for your power tool? cilck here Bak Armatures to find your model. We offer various models of armatures and stators to help your repairment easier.