Description
Special surface treatment, resulting in reduced tendency to edge build-up and improved chip evacuation.
Top quality high performance twist drills.
Cutting edge section ≤ 26.5 mm Ø ground from solid, ≥ 26.5 mm Ø milled. This ensures high concentricity and pitch accuracy, and precision ground point up to 40 mm Ø.
Product Data
Product type: Jobber drill with Morse taper shank
Material: HSS
DIN: 345
Type: N
Tolerance: h8
Point angle: 118°
Helix angle: 20–30°
Nominal Ø Dc: 20.25 mm
Lc: 145 mm
L: 243 mm
MT: 2
Feed (f): 0.2 mm/rev
Cutting Data
Alu: 45
Steel <500 N: 40
Steel <750 N: 30
Steel <900 N: 25
GG(G): 25
Recommendation
Maximum drilling depth: L2 = Lc - 1.5 × Dc.