Boring Bars Identification Table - Inch
Example: A16MCLNR3
C Insert Shape
A 16 M Boring Bar Type Boring Bar Diameter Insert Holding
C
M
A
80°
Diamond
Clamp and Lock Pin
Solid Steel Bar with Coolant Hole
D
55°
E
Diamond
B
R Round
360°
Solid Steel Bar with Anti-Vibration Device
BAR DIA
S Square
C
90°
S
Solid Carbide Bar
T Triangle
This indicates D dimensions in sixteenths (1/16 ).
60°
Screw Lock Only
D
V Diamond
35°
examples:
Solid Steel Bar with Anti-Vibration Device and coolant hole
08 = 8/16 = 1/2" Diameter
W Trigon
E
16 = 16/16 = 1.0" Diameter
80°
24 = 24/16 = 1-1/2" Diameter
Carbide Bar with Fixed Steel Head & Coolant Hole
S
Solid Steel Bar
L C R 3 Boring Bar Style Insert Relief Angle Hand Insert Size
R
B
I.C.
Right Hand
F
5°
0°
0° End Cutting
C
For equal sided inserts this indicates the inscribed circle (I.C.) in eighths (1/8 ).
7°
K
15°
L
N
examples,
15° End Cutting
Left Hand
6 = 6/8 = 3/4" I.C.
-5°
0°
L
4 = 4/8 = 1/2" I.C.
P
-5°
-5° End and Side Cutting
3 = 3/8 = 3/8" I.C.
11°
2.5 = 2.5/8 = 5/16" I.C.
Q
-17.5°
-17.5° End Cutting
U
3°
-3° End Cutting
X
5°
-5° Back Facing/Boring
E4
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