Okuma MB-46VBE spring

[Green Button]

Hi!

My friend have Okuma MB-46VBE, and tool gripping force is not good.
I'm not sure but i understand that there is no disc springs, but somekind of spring element to tighten tool ?

Has anyone changed those springs, and where to buy them ?
(i did understand that element is very expensive at Okumas)

[underthetire]

I'm not sure I understand, I though they were just bellville springs. I get them from Key Bellville.
Disc Springs, Belleville Springs & Washers by Key Bellevilles, Inc.™

[Algirdas]

must be just regular disk springs, as Mr.underthetire stated already.
First question is how tool clamping force was measured? Maybe some headstock service was done recently?