April 19, 2023

Stand Mixer: Why isn't my stand mixer spinning?

A failed worm wear or damaged planetary gear assembly can prevent the stand mixer's beater from spinning. If the beater doesn't move at all when the motor spins, then the worm gear is likely stripped. Unplug the stand mixer, examine the worm gear and replace the gear if it's stripped.

If the beater moves around the inside of the mixing bowl but the beater itself doesn't spin, then the pinion gear inside the planetary gear assembly is likely stripped or damaged. Unplug the mixer, pull off the planetary gear assembly and replace the assembly if the pinion gear is damaged or stripped.

stand mixer

THESE REPAIRS MAY HELP SOLVE YOUR STAND MIXER PROBLEM

JC-SM-Replace-the-worm-gear

Replace the stand mixer worm gear

The worm gear driven by the vertical shaft and pinion gear rotates the attachment. If the attachment will not rotate, replace the worm gear.

Stand mixer worm gear

Find the required part specific to your product.

RG-SM-Replace-Stand-Mixer-Worm-Gear-Intro-Image
September 20, 2015

How to replace a stand mixer worm gear

If a stand mixer attachment won't spin, the worm gear teeth could be worn or damaged. This DIY repair guide and video show how to replace a stand mixer worm gear in 30 minutes or less.

Repair difficulty
Time required
30 minutes or less
JC-SM-Replace-the-planetary-gear-assembly

Replace the stand mixer planetary gear assembly

The planetary gear spins the beater as the planetary housing moves the beater in a circular motion to orbit the inside of the mixing bowl. If the beater moves in a circular orbit around the inside of the bowl but the beater doesn't spin then the beater gear inside the planetary housing is likely stripped or damaged. Replace the planetary gear assembly if the beater doesn't spin when orbiting the inside of the mixing bowl.

Stand mixer planetary gear assembly

Find the required part specific to your product.

Most common symptoms to help you fix your stand mixers

Choose a symptom to see related stand mixer repairs.

Main causes: phase control board failure, wiring connection problem, faulty electronic control board...

Main cause: worn carbon motor brushes...

Main cause: attachment clearance setting needs adjustment...

Main causes: bad wiring connections, faulty speed control plate, electronic control board failure...

Main causes: bad lubricating grease, mixer sitting idle for weeks at a time, mixer running constantly for more than 30 m...

Main causes: bad worm gear, damaged planetary gear assembly...

Main causes: lack of electrical power, wiring failure, worn carbon motor brushes, bad drive motor, tripped overload swit...

Most common repair guides to help fix your stand mixers

These step-by-step repair guides will help you safely fix what’s broken on your stand mixer.

How to replace a stand mixer worm gear

How to replace a stand mixer worm gear

Here’s how to replace the worm gear in your stand mixer if it’s worn or damaged....

Repair difficulty
Time required
30 minutes or less
How to replace a stand mixer phase control board

How to replace a stand mixer phase control board

The phase control board works with the governor and control plate to control motor speed. Replace the phase control boar...

Repair difficulty
Time required
30 minutes or less
How to replace stand mixer motor brushes

How to replace stand mixer motor brushes

If the carbon brushes are worn and damaged, replace them using these steps....

Repair difficulty
Time required
15 minutes or less

Effective articles & videos to help repair your stand mixers

Use the advice and tips in these articles and videos to get the most out of your stand mixer.

How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier....

5 secrets for getting great stand mixer results

5 secrets for getting great stand mixer results

Find out five tips and techniques to help get the most out of your stand mixer....

Easy DIY stand mixer repairs

Easy DIY stand mixer repairs

Learn about some easy stand mixer repairs you can do yourself....