TopThread ™
Catalogue Numbering System
TopThread
Boring Bar Identifi cation System
A25RNNT0R2
A 25 R N N T O R 2
Bar
Type Bar
Diameter Bar
Length Insert
Holding
Method Insert
Shape Insert
Location Rake
Angle
0 = 0° Hand of Tool Insert
Size
Steel
with coolant
N —
TopThread*
End mount
Right hand
E
A
W1
R
Bar in millimetres
Dia.
Dia.
Bars
K
M
Q
R
S
T
U
F30
=
=
=
=
=
=
=
125,0mm
150,0mm
180,0mm
200,0mm
250,0mm
300,0mm
350,0mm
Side mount
Left hand
insert
size W1
S
L
2 3,81
3 4,95
4 6,98
5 9,65
6 9,73
8 11,13
widia.com
* Proprietary
standard only.