RancilioRocky Grinder Burrs New

I am so annoyed. I asked in the Q&A section if these burrs were made by rancilio. They in fact are not. They are rancilio burrs made by a company called LF Group. Yes this is an Italian company but these are not Rancilio manufactured and branded burrs from what i can tell. I will be returning. Someone answered my question but this information was not correct.

Over time, I've had to set my Rocky grind setting lower and lower, until it was at "0" on the dial. The company I bought it from directed me to a video on cleaning and re-calibrating. Did everything in the video to no avail. Found numerous posts on the internet from others having the same problem, with a range of proposed solutions (none worked). Then found these replacement burrs on Amazon.. For $35, worth a try. There are two burrs, each held in place by three screws. Unlike some others, I did not have any problems getting the screws in or out. (But you will need a socket wrench to hold the drive shaft in place when you screw/unscrew the lower burr, otherwise the whole assembly will spin when you try to turn the screws). Be sure to clean the flat surfaces under the burr plates thoroughly, so the new burrs will sit perfectly flat (I used ScotchBrite to clean off the sticky coffee residue). These new burrs made a world of difference! Now I'm grinding espresso at a dial setting of 7-8, like when the machine was new. And, amazingly, I can actually taste the difference. The espresso shots are noticeably sweeter and smoother. Bottom line: Do your routine maintenance, and be aware that the burrs do wear out over time. If you're having to turn the grind setting lower and lower, it's probably time for new burrs.

From Cerini's, the burrs I received were stamped Rancilio. They fit perfectly. Removing the old burrs will probably take more than a screwdriver. I used PB Blaster, heat, and an impact to get the screws out, the end result being all of the screws were removed undamaged. If the only tool you have is a screwdriver that has served as a chisel, pry-bar, scraper, and drift, there is an excellent chance the OEM screws won't come out at all.**edit** (and added a star)This could well come from Captain Obvious.I've had my Rocky for some years, have not replaced the burrs. Yes, I know that is not the path to be taken for good espresso, but the grinder seemed to be doing fine, so why bother with it? Indeed, the only reason I replaced them now was due to running some rocks through the grinder recently; two bags of beans over the course of a month had rocks in them!This morning was my first cup with the new burrs. With beans from the same 8oz. bag as I used yesterday....things were obviously different right off the bat. Ground coffee clumps some. Some grinders are worse at that than others, but most of them do it. I use a mechanic's pick to 'stir' the grounds during the puck make-up to remove the small clumps. This morning...no clumps at all! I had emptied the bit of leftover ground coffee in the container to ensure this morning's coffee was 100% new-burr-ground. A comparison of smell of the two was no comparison at all! The container I use for the small amount of left over grounds is small and airtight. Still, the aroma from the 24hr. old-burr coffee was close to nothing compared to what I ground this morning!The extraction? I use a Miss Sylvia. Plenty of folks with the mega-$$ Gaggia machines might argue that a Miss Sylvia is simply not good enough. Those that LIKE the Miss Sylvia will likely agree that it's touchy..especially a non-PID unit, which is what I use. She and I get along pretty good. Even so, today's pull was in the top 5% quality-wise. I changed nothing else within the range of 'normal'; the tamp, the puck, the temp-surfing, the pre-fuse. The result, however, was completely different..much better.The obvious part is the understanding that Rocky burrs should be replaced from time to time. Just because grounds still come out of the chute does NOT mean the grinder is up to snuff. That it took this long to prove that to myself is sad commentary indeed.Do yourself a favor. Treat yourself and your Rocky to some new teeth!

These burrs fit perfectly and are easy to install. If you are very careful with the screws, you can remove them without stripping. The best mode for the Rocky is to put electric tape over the screw holes in the hopper, before you start adding beans. This will keep the screw holes clean, which in turn, makes it easier to remove the screws without stripping them. I had run close to 100 lbs of coffee through my grinder, since the previous burr change, and the new burrs are clearly sharper.

These installed perfectly and fit reasonably well. Due to inherent limitations of the grinder itself, I was forced to shim one of the blades just slightly to ensure that these burrs met evenly to ensure a more consistent grind. I would (and will) purchase these again when they wear out.NB: the process of replacing these blades requires metric sockets, and a well-fitting flat head screwdriver. I would have given this item 5 stars except that it did not come with replacement screws, and the process of removing coffee-encrusted old screws from the grinder virtually guarantees stripping them. I ended up purchasing replacement screws with a different fastener head to prevent me from stripping them the next time I need to remove the blades.