What speed do grinders turn at?

[rfc]

Doing a small project with my new Zassenhaus. Need some guidance on speed of the "Big Boys", i.e. Mazzer etc. Anyone know how many RPMs they turn?

[AndyS]

Doing a small project with my new Zassenhaus. Need some guidance on speed of the "Big Boys", i.e. Mazzer etc. Anyone know how many RPMs they turn?

Go to the Mazzer website/english version/products/grinder doser.

[Woofy]

Most of the big boys, Mazzer, MACAP and Cimbali to name a few turn at 1600RPM. Been shopping for a new grinder so it's fresh in my noggin.

[bobroseman]

Most of the big boys, Mazzer, MACAP and Cimbali to name a few turn at 1600RPM. Been shopping for a new grinder so it's fresh in my noggin.

The Zasses burrs are not the same shape as the big boys so don't try to spin them at 1600 rpm. I'm guessing that 50 rpm or less would do.

Bob

[Woofy]

Bob-guy is right. Do NOT attempt to turn the burrs of a hand grinder anywhere near the speed of one of the big boys. The Zassens burrs and grind chamber geography are specifically designed for rotation at very "human" rates of speed and torque. Change any of that by very much and you'll have a VERY unexpected and drastically inferior results.

[rfc]

Thanks. What I notice about the Zass is that the thumb wheel to set coarseness is very touchy and could definitely use a detent to keep it put. It is hard to replicate grind fineness the way it is, and the threads are pretty coarse. It is only something like 2 or 2-1/2 turns total from the coarsest setting to the finest. You are probably right about the design of the flutes going into the final grind area at the bottom. As it is, with the lid open I can pop beans out of it when the chamber is nearly empty.

I wonder how much bigger grinders rely on the weight of the beans in the hopper to keep the feed going at a good rate. I can make this thing grind faster if I poke around in there with a tooth brush, but I hesitate to say that because we are probably getting into "do not try this at home" territory.