To replace stand mixer grease, you must disassemble the mixer head, remove old grease from the gears and bearings, and apply a food-grade NLGI 2 grease specifically designed for mixers. This process restores smooth operation and prevents noisy, sluggish mixing.

Quick Answer

Replace stand mixer grease when mixing becomes noisy, the head wobbles, or you notice dark, gritty grease leaking. Use only food-grade grease like KitchenAid’s or Super Lube 41160. The job takes about 30-60 minutes and should be done every 2-3 years for heavy use.

  • When to replace: Replace grease every 2-3 years for heavy use, or when you hear grinding, see grease seepage, or the head struggles to lift heavy dough.
  • Grease type: Only use food-grade NLGI 2 grease, such as KitchenAid’s own or Super Lube 41160. Never use automotive grease.
  • Tools needed: You need a flathead screwdriver, hex key set (usually 4mm or 5mm), putty knife, degreaser, and clean rags.
  • Safety note: Unplug the mixer before disassembly. The gears are under spring tension; work carefully to avoid injury.

Why Grease Replacement Is Necessary

Stand mixer grease lubricates the planetary gears, worm gear, and bearings inside the mixer head. Over time, factory grease dries out, collects dust and metal shavings, and turns into a dark, gritty paste. This increases friction, causing louder operation, slower mixing, and eventual gear wear. Replacing the grease restores quiet, efficient performance and extends the life of your mixer.

Most stand mixers, especially KitchenAid Artisan and Pro models, use a food-grade NLGI 2 grease. This grease is safe for incidental food contact and resists high temperatures and shear forces. Never substitute with automotive grease, which can contaminate food and damage seals.

Tools and Materials You Will Need

  • Flathead screwdriver (for prying covers)
  • Hex key set (typically 4mm or 5mm for the hinge pin)
  • Putty knife or plastic scraper (to remove old grease)
  • Degreaser or citrus cleaner (e.g., Simple Green)
  • Clean lint-free rags or paper towels
  • Food-grade grease: KitchenAid grease (part 9707085) or Super Lube 41160 (synthetic, NLGI 2)
  • Small brush or toothpick (to apply new grease)
  • Optional: bowl scraper attachment for cleaning gears

Step-by-Step Disassembly and Grease Removal

  1. Unplug the mixer. Tilt the head back (if tilt-head) or lock the bowl lift (for bowl-lift models).
  2. Remove the attachment hub cover. Use a flathead screwdriver to pry off the small metal plate on the front of the mixer head.
  3. Remove the hinge pin. On tilt-head models, locate the hinge pin at the back of the head. Use a hex key to unscrew and pull it out. On bowl-lift models, remove the screws securing the top cover.
  4. Lift off the mixer head cover. Carefully pry the plastic or metal cover off. You may need to gently rock it. Set aside.
  5. Scrape out old grease. Use a putty knife or plastic scraper to remove all old grease from the gears, worm gear, and bearings. Wipe with a rag and degreaser until surfaces are clean. Avoid getting degreaser on electrical components.

Applying New Grease and Reassembly

  1. Apply new grease. Using a small brush or toothpick, apply a generous, even layer of food-grade grease to all gear teeth, the worm gear, and the bearing surfaces. Don’t overpack—excess can leak out.
  2. Rotate gears by hand to distribute grease evenly.
  3. Reattach the cover. Align the cover and press down until it snaps or screws into place. Reinsert the hinge pin or screws and tighten securely.
  4. Reinstall the attachment hub cover. Snap it back on.
  5. Test the mixer. Plug in and run at low speed for 30 seconds to check for smooth operation and no unusual noises.

When to Seek Professional Help

If your mixer still makes grinding noises after greasing, the gears may be worn or damaged. In that case, replace the worm gear or planetary gears. Some bowl-lift models require special tools for gear removal; consider a professional service. Also, if you see metal shavings in the old grease, inspect gears for chipped teeth.

Most local appliance repair shops service stand mixers. KitchenAid also offers mail-in repair. The cost is typically less than a new mixer, especially for high-end Pro models.

Pro Tips

  • Use a plastic scraper instead of metal to avoid scratching aluminum gears or housing.
  • Take photos during disassembly to remember screw placement and orientation.
  • Apply a thin layer of grease to the worm gear’s shaft before reinstalling the plastic gear to prevent squeaking.
  • If grease is hard and crusty, warm the mixer head with a hair dryer on low for 2-3 minutes to soften it before scraping.

Common Mistakes to Avoid

  • Using too much grease can cause it to leak out of the attachment hub and into your mixing bowl.
  • Forgetting to clean the old grease thoroughly leaves abrasive particles that accelerate wear on new grease.
  • Over-tightening the hinge pin screws can strip the plastic threads on some models; tighten until snug only.
  • Applying non-food-grade grease like lithium or moly grease risks contaminating food and voiding warranty.

FAQ

Can I use any food-grade grease?

Only use NLGI 2 food-grade grease specifically for kitchen appliances. Super Lube 41160 and KitchenAid part 9707085 are proven choices. Avoid vegetable oils or butter—they break down and cause damage.

How often should I replace the grease?

For home bakers using the mixer 2-3 times per week, every 2-3 years. For professional or heavy use (daily), replace annually. Signs include noisy operation or dark grease leaking from the hub.

Will replacing the grease fix a wobbling head?

Wobbling is usually caused by worn bearings or a loose hinge pin, not grease. Replace the grease anyway, but also check and tighten the hinge pin. If wobbling persists, bearings may need replacement.

The Bottom Line

Replacing stand mixer grease is a straightforward DIY task that can revitalize an aging mixer. With the right grease and careful disassembly, you can avoid costly repairs and keep your mixer running quietly for years. If you’re uncomfortable with the process, a local repair shop can do it for a modest fee—still cheaper than a new mixer.

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