Why does LUME grinder's burr wobble?

Our new pro users will soon discover that LUME grinder’s ceramic burr is slightly wobbling when rotates. Also the burr outer-ring is movable as demonstrated in below two images.

Burr wobbling

Burr wobbling

Movable outer burr ring.

Movable outer burr ring.

There is a simple explanation for this - we discovered in our lab tests that a “controlled-wobbling” is compensated by the consistent torque generated by the grinding motor. Therefore the ground quality won’t suffer. This design also allows buffering for the rotating shaft further extending battery life by up to 25%.

Please visit this link for a video comparison between LUME grinder and other premium hand grinders when it comes to ground consistency.

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