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3.Symbol for Tolerance Class

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Trianglar insert with a facet
(Secondary Cutting Edge)

Symbol Tolerance of
Nose Height
m (mm)		 Tolerance of
Inscribed Circle
ø D1(mm)		 Tolerance of
Thickness
S1(m)
A ±0.005 ±0.025 ±0.025
F ±0.005 ±0.013 ±0.025
C ±0.013 ±0.025 ±0.025
H ±0.013 ±0.013 ±0.025
E ±0.025 ±0.025 ±0.025
G ±0.025 ±0.025 ±0.13
J ±0.005 ±0.05~±0.15 ±0.025
K* ±0.013 ±0.05~±0.15 ±0.025
L* ±0.025 ±0.05~±0.15 ±0.025
M* ±0.08~±0.18 ±0.05~±0.15 ±0.13
N* ±0.08~±0.18 ±0.05~±0.15 ±0.025
U* ±0.13~±0.38 ±0.08~±0.25 ±0.13

The surface of insert with * mark is sintered.

Detail of M Class Insert Tolerance

Tolerance of Nose Height m (mm)
D.I.C. Triangular Square Rhombic 80° Rhombic 55° Rhombic 35° Round
 6.35 ±0.08 ±0.08 ±0.08 ±0.11 ±0.16 -
 9.525 ±0.08 ±0.08 ±0.08 ±0.11 ±0.16 -
12.70 ±0.13 ±0.13 ±0.13 ±0.15 - -
15.875 ±0.15 ±0.15 ±0.15 ±0.18 - -
19.05 ±0.15 ±0.15 ±0.15 ±0.18 - -
25.40 - ±0.18 - - - -
31.75 - ±0.20 - - - -
Tolerance of Inscribed Circle (mm)
D.I.C. Triangular Square Rhombic 80° Rhombic 55° Rhombic 35° Round
 6.35 ±0.05 ±0.05 ±0.05 ±0.05 ±0.05 -
 9.525 ±0.05 ±0.05 ±0.05 ±0.05 ±0.05 ±0.05
12.70 ±0.08 ±0.08 ±0.08 ±0.08 - ±0.08
15.875 ±0.10 ±0.10 ±0.10 ±0.10 - ±0.10
19.05 ±0.10 ±0.10 ±0.10 ±0.10 - ±0.10
25.40 - ±0.13 - - - ±0.13
31.75 - ±0.15 - - - ±0.15