Description
Roll forged, standard helix angle, core thickness and core taper. Dimensions to DIN 338. Robust jobber drill with strengthened core and small chisel point for easy spot drilling and accurate centring of the designated hole. Precision roll forged flutes.

Product Data
Product type: Jobber drill, plain shank
Tool material: HSS
DIN: 338
Type: N
Tolerance: h8
Point angle: 118deg
Version: Precision Roll Forged N
Nominal Dia. Dc: 16 mm
Lc: 120 mm
L: 178 mm
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 x Dc.

Cooling
Suitable for oil lubrication and emulsion.

Note
Size 14-20: Shank Dia. 13 mm with 3 drive flats. Precision roll forged profile is forged in a chipless process; the guide chamfers are additionally ground.