BALLS!...The race type

[Lee Roberts]

Would suggest NOT going with ceramic's!

Why?, expensive and fragile!

A single "nock" or mishap could kill them and make it a waste of time for this application on top of it being OTT IMO.

Replace like-4-like and you cant go wrong.



.Me

[komatias]

Lee,

It depends on the ceramic used. (Engineering ceramics does not mean pottery) I can personally admit to having taken a hammer to some silicon nitride and silicon carbide balls and they did not even dent.

It all depends on what you buy.

I know of at least one oilwell drilling tool that uses such bearings being rated to a few hundred G's worth of shock.

One local manufacturer used to supply a machine reconditioner angular contact bearing for bridgeport type mill spindle. On my desk I have a set of angular contact bearings wheel bearings of the same brand as used on the racing Smart car made by the same company.

Please do not take this personally, I am just going on my experience. You may of course have different experience which I think would be nice to share here.

Would suggest NOT going with ceramic's!

Why?, expensive and fragile!

A single "nock" or mishap could kill them and make it a waste of time for this application on top of it being OTT IMO.

Replace like-4-like and you cant go wrong.



.Me

[Nthkentman]

Komatias..........Where would you suggest I purchase a pair of ceramic 7002s form that would be good for my spindle ?

Lee,

It depends on the ceramic used. (Engineering ceramics does not mean pottery) I can personally admit to having taken a hammer to some silicon nitride and silicon carbide balls and they did not even dent.

It all depends on what you buy.

I know of at least one oilwell drilling tool that uses such bearings being rated to a few hundred G's worth of shock.

One local manufacturer used to supply a machine reconditioner angular contact bearing for bridgeport type mill spindle. On my desk I have a set of angular contact bearings wheel bearings of the same brand as used on the racing Smart car made by the same company.

Please do not take this personally, I am just going on my experience. You may of course have different experience which I think would be nice to share here.