Description
Special point geometry for generating 180° flat-bottomed holes.
Low radial forces even when spot drilling on faces with up to 15° slope.
Flute geometry for optimum chip evacuation.
With 4 guide chamfers to stabilise the drill in the hole.
Advantage
The 180° point angle permits drilling and counterboring in a single operation.
Recommendation
When using the solid carbide 180° drill it is absolutely essential for process reliability:
• When spot drilling on flat surfaces, drill a pilot hole 1×D using pilot drill No. 122736.
• When spot drilling on sloping surfaces up to max. 15°, reduce the feed rate f to 25% of the stated value.
• After spot drilling, the normal feed rate value can be used.
Product Data
Product type: Solid carbide drill 180°
Material: Solid carbide
Standard: Standard
Shank: Plain shank DIN 6535 HA
Diameter tolerance: m7
Shank tolerance: h6
Number of cutting edges: 2
Point angle: 180°
Through-coolant pressure: 25 bar
Coating: TiAlN
Drilling depth: 5×D
Cutting edge chamfer: 5% of nominal diameter
Ø Dc: 16.8 mm
L2: 65.8 mm
L: 141 mm
Ø Ds: 18 mm
Feed (f): 0.2 mm/rev
Cutting Data
Steel <500 N: 85 m/min
Steel <750 N: 75 m/min
Steel <900 N: 60 m/min
Steel <1100 N: 50 m/min
INOX <900 N: 45 m/min
GG(G): 90 m/min
ISO Code
Alu plastics: N
Alu: N
Alu cast >10% Si: N
Steel <500 N: P
Steel <750 N: P
Steel <900 N: P
Steel <1100 N: P
Steel <1400 N: P
Steel <55 HRC: H
Steel <60 HRC: H
Steel <65 HRC: H
Steel <67 HRC: H
Steel <70 HRC: H
INOX <900 N: M
INOX >900 N: M
Ti >850 N: S
GG(G): K
Note
Flute length Lc = L2 + 1.5 × Dc.
Form HB and HE supplied at the same price as HA.
For HB: order with No. 122793 + 129100HB.
For HE: order with No. 122793 + 129100HE.
180° solid carbide drills for machining aluminium are available on request.
Not suitable for generating counterbores for socket-head screws to DIN 974-1.