Indexable Drills
Top Cut 4 ™ Catalogue Numbering System
The guide below provides an example of how to select the
Top Cut 4 tool body and accompanying inserts for a stable steel drilling application.
Metric Body
TCF 250 R 3 SL 32 M D
Tool Family Diameter
Metric =
3 digits
(e.g. 250 =
25mm)
Inch =
4 digits (e.g.
2500 = 2.5") Right-Hand
Cutting Length
Diameter
Ratio Shank Style
SL =
Side Lock
Adaptor Shank Size Metric Insert Size
Top Cut 4
L/D = 3 x D
Periphery Insert
TCF
08 03 08 D P V34 WU25CH
Tool Family Size Insert
Corner
Radius Insert
Positioning Insert
Geometry Grade
In-Circle D1 Insert
Thickness Insert Size Top Cut 4
C =
Central
P =
Periphery
Insert Geometry – V34 for steel or cast iron or V36 for stainless steel and long chipping steel.
Insert Guide for Grades
U 25 C H
W U 40 P H
W PK 10 C H
WIDIA ™ Material
Range Toughness
Range Coating Application
U = Universal
P = Steel
K = Cast Iron Choose high
numbers for
toughness
in stable
conditions,
low numbers
for high wear
resistance at
continuous
cuts.
P = PVD
C = CVD
H =
Holemaking
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