by miKe mcKoffee on Mon Oct 18, 2010 8:29 pm
Oops my bad, 200lb mfg rating was Rocky/MD40/other 50mm burr sets...
HB wrote:According to the owner's manual, the burrs are rated at 300 kilograms (~660 pounds). Burrs are not expensive compared to the coffee that passes through them, so I recommend replacing them at half their duty life.
Having to grind finer and finer is one of the primary symptoms of worn out burrs. Other wear indicators include coffee overheating and clumping, shot volume decreasing before blonding and grind time increasing. From the FAQs,
How to know grinder burrs are worn out? offers other tidbits of advice.