Description
Precision-ground GARANT Master Steel ball nose end mill for very high accuracy.

Application
For precision steel machining and copy milling.

Features
Type N.
Four cutting edges.
30 deg helix.
Ground recess.
TiAlN coating.
Tolerance radius contour +/-0.005 mm.

Advantages
Improved cutting-edge protection and high bending strength from ultra-fine-grain substrate.

Product Data
Product type: GARANT Master Steel Solid Carbide Ball Nose End Mill HPC
Article family: 207490
Size: 20 mm

Dimensions
Diameter: 20 mm
Cutting length Lc: 26 mm
Length L1: 50 mm
Neck diameter D1: 19.5 mm
Overall length L: 104 mm
Shank diameter Ds: 20 mm
Feed fz steel <900 N/mm^2: 0.15 mm
Feed fz steel <900 N/mm^2 alternate: 0.18 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
INOX <900 N/mm^2: 90 m/min
Cast iron: 400 m/min

Notes
New-generation GARANT Master Steel family.