Bucsa de gaurit fara guler
DIN 179 (similar to ISO 4247)
type A: Bore hole rounded at one end
Item no. Hardness Material
7819. HRC 62+2 Case-hardened steel as
chosen by manufacturer.
Inside and outside grinded in
tolerance, with insertion chamfer.
For a drilling with tolerance range H6 or H7 in jig/fixture.
Gradation of the bore hole d1 until 22,0 of 0,1 mm>22,0 of 0,5 mm.
Type B ( Bore hole rounded at boths ends) = 10% surcharge.
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