Description
Micro precision copy slot drill with crystalline diamond sp^3 coating.

Application
For highest demands regarding performance and precision in fibre-reinforced composites, CRP, GRP and graphite.

Features
Two cutting edges.
Ground recess.
Recess angle alpha = 16 deg.
Double-relief ground with two hollow-ground chamfers.
Radius-contour tolerance 0/-0.005 mm.
Neck diameter tolerance 0/-0.01 mm.
Helix angle 25 deg up to 0.8 mm; 30 deg from 1 mm.

Dimensions
Diameter x overhang length: 3x20 mm
Cutting length Lc: 3.5 mm
Length L1: 20 mm
Neck diameter D1: 2.92 mm
Overall length L: 60 mm
Shank diameter Ds: 4 mm
Feed fz graphite: 0.035 mm
Correction factor ap: 0.2

Cutting Data
PVDF GF20: 200 m/min
POM GF25: 190 m/min
PA 6.6 GF30: 170 m/min
PEEK GF30: 150 m/min
PTFE GF25: 180 m/min
PEEK CF30: 160 m/min
Honeycomb sandwich: 350 m/min
GRP: 190 m/min
CRP: 190 m/min
Graphite: 340 m/min

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