Bosch Spur Gear (Gear Nut)
Replacement Gear for Bosch Classic Models
The spur gear is the small but critical part that transfers motor power to your mixing attachments. When it wears out, your mixer motor runs but nothing spins. This genuine Bosch replacement gets your Classic MUM6 mixer back to full power.

Why You Need a New Spur Gear
The spur gear is designed as a sacrificial part — it wears down to protect your mixer's motor
Motor Protection
The spur gear is intentionally the weakest link in the drive train. It's designed to wear out before the motor does, saving you from an expensive motor replacement. Think of it as a fuse for your mixer.
Easy DIY Fix
No need to send your mixer in for repair. Most users can swap the spur gear at home in about 15-20 minutes with basic tools. It's one of the simplest repairs you can do.
Signs of Wear
- Motor runs but attachments don't spin
- Grinding or clicking noises
- Inconsistent attachment spinning
Compatibility
Compatible With
- Bosch Classic (MUM6) mixers
- Older-style Bosch kitchen machines
NOT Compatible With
- Bosch Universal Plus (MUM6N) — use the Universal Plus spur gear instead
Specifications
Frequently Asked Questions
Get Your Bosch Mixer Running Again
Genuine Bosch spur gear for Classic MUM6 models. free shipping on orders over $50.