Archive for September, 2007

my coffee grinder died today

Posted in kitchen on September 26th, 2007 by scott – Be the first to comment

My coffee grinder died today. In fact, it had begun to slowly deteriorate the past couple of weeks. It served me well… I had used it every single day for the past two years. It’s a beautiful KitchenAid A-9 – one of the new models. I have to say that I expected a good 5
years out of it.

When these grinders act up, they are very irritating. The motor is a direct drive 200W model that spins a tad too fast. There’s no auger, so there is nothing really to help break up the whole beans before they reach the burrs. When the beans have trouble getting down into the burrs (maybe they’re afraid?) the motor just
spins faster and faster and spews the last of the ground coffee all over the counter.

I opened it up to try to figure out what might be causing this, and to be honest I can’t really tell. I guessed that something might have loosened up (bearings perhaps?) causing the burrs to vibrate and not allowing the beans to flow in. Turns out there’s not even any bearings! The rotating burrs rest on a plate with a fair amount of play, so while the burrs can be replaced, that’s not any guarantee they will remain lined up.

Reluctantly, I started to seal the think back up… The motor is held to the cast alloy body with two tapered screws. Disaster! I stripped the soft alloy and now the motor won’t mount up at all.

It’s unfortunate, really, that something as over-engineered as this has such weak points. Little things like this are what make the difference between professional gear and pseudo-industrial-looking home gear. My favorite grinder to date is the Zassenhaus Grain Mill, but it’s a little labor intensive for morning brew.

I found a larger KitchenAid Pro Line on clearance for $150. It’s got gear reduction and an auger, so opefully won’t grind itself into oblivion. If it does, my next choice would be a Rancilio Rancho (at a whopping $300)

Well, wish me luck. I guess I could just go back to the $20 blade grinders!