Description
Precision-ground GARANT Master Steel solid carbide ball nose milling cutter.

Application
For high-accuracy steel machining and contour milling.

Features
Type N.
Two cutting edges.
28 deg helix.
Ground recess.
TiAlN coating.
Radius contour tolerance +/-0.005 mm.
Slight edge honing for improved cutting-edge protection.

Advantages
Ultra-fine-grain substrate provides high bending strength and long service life.

Product Data
Product type: Master Steel Solid Carbide Ball Nose Milling Cutter HPC
Article family: 207242
Size: 12 mm

Dimensions
Diameter / shank variant: 12 mm
Cutting length Lc: 16 mm
Overall length L: 73 mm
Shank diameter Ds: 12 mm
Feed fz steel <900 N/mm^2: 0.11 mm
Feed fz steel <1100 N/mm^2: 0.13 mm

Cutting Data
Steel <500 N/mm^2: 270 m/min
Steel <750 N/mm^2: 240 m/min
Steel <900 N/mm^2: 220 m/min
Steel <1100 N/mm^2: 190 m/min
Steel <1400 N/mm^2: 170 m/min
Hardened steel <55 HRC: 140 m/min
Hardened steel <60 HRC: 130 m/min
INOX <900 N/mm^2: 90 m/min
INOX >900 N/mm^2: 80 m/min
Cast iron: 400 m/min

Notes
Successor generation to 207240 / 207280 / 207320.