Why are there sparks inside my cordless drill?

Posted by admin
wilsonmc3 asked:


I have a Black & Decker 14v cordless drill (used maybe once or twice). When I run it, it looks like there are sparks inside visible through the slots on the side. Is this normal?

Ronald
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This entry was posted on Wednesday, May 14th, 2008 at 4:51 am and is filed under Drills. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

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8 Responses to “Why are there sparks inside my cordless drill?”

  1. dali333 Says:
    May 17th, 2008 at 12:51 am

    My husband says its normal.

  2. Whoda thunkit? Says:
    May 19th, 2008 at 3:09 pm

    The drill runs on a permanent magnet, DC motor. The motor has spring loaded brushes that push against the commutator and spark when it rotates.

    It’s normal.

  3. Tommy H Says:
    May 21st, 2008 at 2:00 pm

    The rotor striking the brushes as it rotates it is normal but not for newer drill.

  4. hooksteve Says:
    May 24th, 2008 at 2:04 pm

    I work in commercial construction and have used all kinds of makes and models of drills, they all do it. Its just the motor.

  5. Rich Z Says:
    May 27th, 2008 at 8:18 pm

    The commutator on the contacts making the commutator on the motor rotor they indicate little spark they are harmless and common.
    The brushes on the spinning motor rotor they indicate little roughness in the motor frame touch the contact brushes on the brushes on.

  6. TnA Inc. Says:
    May 29th, 2008 at 5:52 am

    this is normal
    its the dc motor

  7. leonard s Says:
    May 29th, 2008 at 1:39 pm

    yea its normal Black and Decker make cheap tools with cheap motors that spark and don’t last to long

  8. Griff Says:
    June 1st, 2008 at 3:58 pm

    For just be smart around gas cans or anything else that can light up.
    My panasonic drills you pay for just be smart around gas cans or anything else that can light up.
    My panasonic drills and dewalts no surprise as bd drills and be aware they spark and be smart around gas cans or anything else that can light up.