Description
High-precision micro torus cutter with special geometry, coating and carbide for hard machining.

Application
For high-performance machining of hardened steels.

Features
Type H.
Two cutting edges.
Double-relief-ground geometry with two chamfers.
Ground recess.
TiAlN coating.
Recess angle 16deg.
Corner-radius tolerance +/-0.0025 mm.
Neck tolerance 0/-0.01 mm.

Advantages
Stable cutting and maximum precision in hard machining.

Product Data
Product type: Diabolo Solid Carbide Precision Micro Torus Cutter
Article family: 206155
Corner radius: 0.05 mm
Size: 0.4x3 mm

Dimensions
Diameter x overhang length: 0.4x3 mm
Cutting length Lc: 0.4 mm
Length L1: 3 mm
Neck diameter D1: 0.38 mm
Overall length L: 50 mm
Shank diameter Ds: 4 mm
Corner radius R1: 0.05 mm
Feed fz steel <65 HRC: 0.012 mm
Feed fz steel <65 HRC, alternate: 0.012 mm
Correction factor ap: 0.8

Cutting Data
Steel <500 N/mm^2: 200 m/min
Steel <750 N/mm^2: 190 m/min
Steel <900 N/mm^2: 170 m/min
Steel <1100 N/mm^2: 140 m/min
Steel <1400 N/mm^2: 110 m/min
Hardened steel <50 HRC: 80 m/min
Hardened steel <55 HRC: 70 m/min
Hardened steel <60 HRC: 72 m/min
Hardened steel <65 HRC: 55 m/min
Copper alloys: 140 m/min

Notes
At greater tool overhang lengths use a reduced ap. Calculate feed using the actual machine speed.