Rancilio Rocky with noise problem!

[xxooxxoo]

currently i replaced the blade for my rancilio rocky by using the hammer and screwdriver to get original screw to come off. Ever since that, i got a unusual noise when i use it...

anyone know how to fix it? because it used to be very quiet....HELP~~

[Randy G.]

currently i replaced the blade for my rancilio rocky by using the hammer and screwdriver to get original screw to come off. Ever since that, i got a unusual noise when i use it... anyone know how to fix it? because it used to be very quiet....HELP~~

Wish you would have asked BEFORE starting. Did you hammer on the burr that comes off (top burr) or on the bottom one that stays in the machine?

What sort of noise is it making?

With what you asked so far, I would say that a machinist or machine shop, or someone who works on motorcycles or cars could use a dial indicator to make sure nothing is bent.

[HB]

currently i replaced the blade for my rancilio rocky by using the hammer and screwdriver to get original screw to come off.

Ouch. Ian explains the risk of heavy handedness in Warning about grinder burr / carrier removal, excerpted below:

If impact is used to remove screws or nuts, the motor bearings can be damaged :
Brinelling is caused when a load is applied to a ball bearing that exceeds the elastic limits of the steel and the raceways are permanently deformed. Brinelling creates measurable dents at each ball location similar to the deformation caused by a Brinell Hardness Tester. This type of damage can occur quite easily if proper care is not taken. High energy impacts (from hammers and smash-ups), improper bearing handling and incorrect spindle assembly can all damage bearings. Remember that we are talking about bearings with raceways with roundness measured in millionths of an inch. Damage may result in increased vibration and non-repetitive run-out.

[xxooxxoo]

oh no!!!!!!!!!!!!!!!!!!!!!
so is there any ways to bring it back at all?......

[xxooxxoo]

Problem solved! my rocky is back to normal. the noise is totally gone and the machine is back to the way i used to know.


my solution is-->>hammer on the screw from the top burr again lightly.. turn on the machine everytime after you hammer one screw in order to identify which screw is the one that moved the center of the axle..well..there is a question...<how do you know the screw you hammered is the correct one?> hmm. i will say.....after you hit the right one and turn on the machine....you won't ever find any odd noise... so if it's not the right one, i guess you just have to hit it one more time.

[HB]

i will say.....after you hit the right one and turn on the machine....you won't ever find any odd noise... so if it's not the right one, i guess you just have to hit it one more time.

Glad to hear it was a simple as an off-center burr (?), but as Ian pointed out, I would avoid the "hit this, hit that" approach. Carefully reseating the burrs by tightening the screws in succession (as you would mount a car tire) is more prudent.