Page 520 - Master Catalog 2017, Inch

TopGroove
™
Catalog Numbering System

TopGroove
Insert Identifi cation System

NGD2M150RK

N G D 2 M 150 R K

Type Insert Additional Insert Size Groove Hand Cutting Chipbreaker Defi nition
of Insert Style Information Size Identifi cation Size** of Insert Depth Design of
Inserts

N — D — M — L — Shown for K — Groove size
TopGroove Deep Metric insert Left groove and Standard J or L —
grooving groove width hand chamfer chip control Poly-Vee
inserts inserts
P — C — R — E —
in .0004" I — Internal
Positive Circlip groove Right increments. Hone only face grooving
insert width hand
C — is nominal
Groove circlip size
and
chamfer
Blank —
Indicates inch
width insert Position pertains to groove width for F-, G-, and
U-style inserts, radii for R-style grooving inserts,
and circlip size for groove and chamfer inserts.
Dimension in .001" or 0,01mm.
B — Blank (for W1 Inch example: 1/32" width groove or radius
special forms) equals “031” catalog position number.
insert Metric example: 3,25mm width groove or radius
F — Face grooving number mm inch equals “325” catalog position number.
Width Tolerance: ±.001" (±0,025mm) unless
G — Grooving 1 2,54 .100 otherwise specifi ed.
P — Back turning 2 3,81 .150
R — Full radius 3 4,95 .195
4 6,98 .255
U — Undercutting
(or relieving) 5 9,65 .380
V — Poly-Vee 6 9,73 .383

**Omit position for TopGroove NB-style blanks.

TopGroove/TopThread Threading TopGroove/TopThread
and Grooving Insert Dimensions Holder Design

back clearance
S W1
insert size mm inch mm Inch
NOTE: Holders are designed to locate insert inclined to
1 2,54 .100 2,54 .100 3° to provide back clearance down open side.
2 5,56 .219 3,81 .150
3 8,74 .344 4,95 .195
WIDIA ™ TopGroove, and TopThread ™ tooling
4 11,51 .453 6,48 .255
technology combine to bring you the very best threading
5 17,48 .688 9,65 .380 and grooving system available in the world today.
6 11,51 .453 9,73 .383
8 7,93 .312 11,13 .438

E48 widia.com

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