Question about KitchenAid KSB5 Ultra Power Work Top Blender

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Blender base gear knobs broke off

The small gear like knobs on the blender base sheared off - only 3 years old. I guess they don't make kitchenaid like they use to.

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  • Jongsma Sep 04, 2008

    My blender coupling also sheared off of my KithenAid KSB5, purchased October 2005. When the blender needs to work harder due to some resistance, it jumps off the base and strips the coupling. Knowing this, I now hold it down when I use the blender, though it's inconvenient. Today, though, the entire coupling ground into powder while I was holding it down. Arrgghh!

  • Anonymous Nov 28, 2008

    i have the same problem and am searching for a solution

  • Anonymous Dec 11, 2008

    My blander base gear knobs were polvarized as I was blending a health shake. It only involved fruit. I need assistance to replace gear with something better than rubber.

  • Anonymous Dec 28, 2008

    Same problem. Black base gear knobs have all snapped off! Very frustrating! This blender is new.

  • statement581 Feb 20, 2009

    The same thing happened to me. Spikes started to break off within months and now half the black is gone.

  • Anonymous Feb 26, 2009

    same thing happened to mine/ first I thought I had left the egg shells in it, shook the blender to see if it was on, then still heard it, sounded like spoon or glass in it.. sure enough.. the black base gear knobs broke off,I Love my kitchenaid.... do we get the parts free? do they back up the product? anyone know before i go buy a whole new base, maybe I can find one at a garage sale, but mine is such a pretty blue!!!

  • steeljean Mar 08, 2009

    I probably have used mine a dozen times and the same exact thing happened. I am going to call around. I have a bad feeling though.....

  • adriennesaw Mar 11, 2009

    Exactly the same thing has happened to mine. Haven't even had it a year. Noticed lots of black rubber "dust" and realised the turning mechanism had eroded to nothing.

  • Anonymous Mar 15, 2014

    There's a small plastic disk that has dropped down above the blade ... how do I reattach it?

  • Marie Greally
    Marie Greally May 05, 2014

    I have the same problem. A few weeks ago two of the black little knobs came off and yesterday all the remaining knobs turned to dust as I was using the blender. I was making breadcrumbs so there was very little stress on the machine. Can this be repaired?



1 Answer


Reports the same problem and a couple of solutions.

Posted on Sep 26, 2008


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6ya staff

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Hi there,
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Good luck!

Posted on Jan 02, 2017


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Older KitchenAid blenders had a jar that was made so the blade assembly could be removed for cleaning. On the newer models the blender jar and the blade assembly are all one unit so you have to purchase a new jar to get the blade assembly. All of this is dependent on which model of blender you have.

We would be happy to help you. Please a give us a call at 1-800-339-9297 we would be happy to help! One of our repair technicians can talk you through the repair over the phone free of charge. On the bottom of your blender is the model and serial numbers; have these handy when you call so we can help you order the correct part.

We have several blender jars on our Web site for KitchenAid blenders. If we don't have the blender jar that fits your model in-stock we can order it and ship it to you. Please contact us with any further questions. You can also email your model number or questions to

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The piece that you need is referred to as the coupler. The coupler is a breakway part that is designed to shear and/or wear down in the event that the blender is overloaded. This is to avoid damage to the motor.

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This just happened to me too, and I think I just fixed it.  First you have to get a replacement part called the "blender coupling" (I got mine online from Goodmans for $3.99).  I also replaced the square drive and slinger (two parts come together for $2.99)-that's the little part that sticks up and attaches to the pitcher.
Unscrew the bottom four screws of the base where the rubber feet are.  Remove the rubber skirt to reveal four screws that hold the motor in.  They are way in there so you'll need a long screw driver.  Remove the motor and unscrew the old coupling.  Mine had not been replaced since my grandmother bought this blender who knows when, so the coupling was really stuck.  I did not have a tool narrow enough to get a good grip to apply enough torque to remove the coupling so I had to try a few other tricks.  If your blender is the same, remove the bottom nut, fan blade and two washers.  This gave enough of a rod to grip to get the old coupling off.  (I also had to use some WD40, and heat and cool the coupling a few times to break the old seal).
Good luck!  Hope that helps!

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