Description Details
Restore the seamless function of your Mazzer coffee grinder with the genuine Mazzer Key 3 x 3 x 28 (Part # M28254001). This precision-machined component is a vital part of the grinder's internal assembly, often acting as a keyway element that secures the motor shaft to the burr carrier or adjustment mechanism. The key feature is its exact dimensions: 3mm x 3mm x 28mm, guaranteeing a perfect, factory-specified fit and reliable torque transfer. If you are noticing issues like the grinder turning on but the burrs not spinning, or inconsistent grinding performance ("Why is my Mazzer grinder motor running but not grinding?"), a worn or sheared key is often the core problem. Replacing this small but crucial OEM part prevents slippage and ensures the grinder mechanism engages correctly.
The primary benefit of using this official replacement key is maintaining the mechanical integrity and longevity of your expensive Mazzer equipment. A worn key can lead to excessive wear on the motor shaft or burr carrier keyway, which are much more costly components to replace. Proper usage involves careful installation into the designated slot on the shaft, ensuring a tight fit before reassembling the burr set. This is the definitive solution to address "grinder skipping" or "Mazzer inconsistent motor power" issues related to internal mechanical connections. Keep your commercial workflow running smoothly and minimize expensive downtime with this essential replacement part.
Specifications confirm the critical size for guaranteed compatibility: 3mm width, 3mm height, and 28mm length. Engineered from high-grade metal, this key is built to withstand the high torque and stresses encountered during heavy commercial grinding cycles. Ensure maximum machine uptime and protect your motor by routinely inspecting this component during maintenance. Order the Mazzer Key 3 x 3 x 28 (M28254001) today from Kaldi.com to solve "Mazzer grinder motor spinning but no grinding" problems quickly and reliably.
Frequently Asked Questions
Our current database shows fitment for the Robur S series. However, many Mazzer components are interchangeable across different platforms. If you have successfully installed Part #M28254001 on a model we haven't listed, please let us know so we can update our records for the community.
If you are unsure of the fit, do not guess. To prevent downtime, please view our Compatible Parts Diagrams to check the exploded view PDF for your specific unit, or message our parts team for assistance.
Compatible Parts Diagrams*
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