Jacob M Indianola , IA September 04, 2020 Appliance: KitchenAid 6 Qt. Stand Mixer KP26M1XMR4 Kitchenaid Mixer Kp26m1xmr4: Planetary on a 6 quart kitchen aid mixer had fallen out. How to replace Planetary Shaft Bearing. I replaced the planetary, shaft bearing and a few of the gears. I also put a bunch of grease around the gears. We have used this mixer regularly for the past 15 years and I did a pretty extensive overhaul. The only thing I wasn’t able to do is figure out how to make the mixer quieter. I wish they had a part for that. Appliance parts pros is the best. Great videos with plenty of close ups and tips on how to make the repair. Simple tools needed, nothing fancy (except the snap ring pliers). Parts got to me within a couple days. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes