Focus rotary drilling products - Drilling Equipment | Marchi Giorgio
Outer Roller. Bearing. Inner Roller Bearing. Cone (L) and Journal (R). Thrust Buttons ... Deeply set spherical inserts on shirttail ... tendency to stick and ball up the cutting structure. ..... beveled edge to the inside, the flat end to the .... 4n-Rod 61.
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carmina's website is carmina.cz