Version:
For producing toleranced holes in steel or short-chipping materials. Reliable complete machining without separate centring and without subsequent reaming process. Significantly improved self-centring due to additional pyramid tip for optimum roundness and tolerance accuracy of the hole that is produced. Two drill cutting edges and four reaming cutting edges for an attractive surface quality of the wall of the bore.
Tolerance specifications:
H7: Version for H7 bore tolerance.
+/− 0.003 mm: Manufacturing or cutting tolerance of nominal ⌀ DC.
Note:
Flute length L
C = L
2 + 1.5 × D
C.
HB and HE shanks are available at the same price as HA.
For
HB shanks: use order
No. 122797 + 129100HB.
For
HE shanks: use order
No. 122797 + 129100HE.
Minimum order quantity: 5 pieces
Delivery time: 6 working weeks
Items made to order for a specific customer: Cancellation only up to a maximum of 3 working days after receipt of order acknowledgement. Items cannot be returned. We reserve the right to over-deliver or under-deliver by± 10% (minimum 1 piece).