GND Brochure 2025

GND Series - Inserts Continued

Dimensions (Inch / mm )

Coated Carbide

Cermet Uncoated Carbide DLC

GCMN Inserts

Sumitomo Catalog Number

Precision Machining

Grooving WidthNose RadiusOverall LengthThickness

S

K

P

N Insert Seat Size

Fig.

CW RE

L

S

H10 DL1500

Function

GCGN2002-GA GCGN3002-GA GCGN4004-GA GCGN5004-GA GCGN6004-GA GCMN3125-RG GCMN4020-RG GCMN5187-RG GCMN5025-RG GCMN6030-RG GCMN6250-RG GCMN7035-RG GCMN8040-RG GCMN6250R1.0-ML GCMN7004-ML GCMN7008-ML GCMN8004-ML GCMN8008-ML GCMN2010-RN GCMN3015-RN GCMN3015-RN1 GCMN3125-RN GCMN4020-RN GCMN5187-RN GCMN5025-RN GCMN6030-RN GCMN6030-RN1 GCMN6250-RN GCMN3015-RG GCMN2002-ML GCMN3002-ML GCMN3002-ML1 GCMN3004-ML GCMN3125R0.5-ML GCMN4002-ML GCMN4004-ML GCMN4004-ML1 GCMN4008-ML GCMN5187R1.0-ML GCMN5004-ML GCMN5004-ML1 GCMN5008-ML GCMN6004-ML GCMN6004-ML1 GCMN6008-ML

.078 .0078 .831 .142 4 .118 .0078 .831 .150 4 .157 .0156 1.039 .157 4 .197 .0156 1.039 .161 4 .236 .0156 1.039 .177 4 .078 .0078 .831 .142 5 .118 .0078 .831 .150 5 .157 .0078 1.039 .157 5 .078 .0012 .882 .142 5 Dimensions (Inch / mm ) .078 .0012 .882 .142 5 .118 .0012 .882 .150 5 .118 .0012 .882 .150 5 .187 .0938 1.0709 .161 2 .197 .0984 1.0709 .161 2 .236 .1181 1.0827 .177 2 .250 .1250 1.0827 .177 2 .276 .1378 1.144 .217 2 .315 .1575 1.1516 .236 2 .078 .0078 .831 .142 1 .118 .0078 .831 .150 1 .118 .0078 .831 .150 6 .118 .0156 .831 .150 1 .125 .0078 .831 .150 1 .157 .0078 1.039 .157 1 .157 .0156 1.039 .157 1 .157 .0156 1.039 .157 6 .157 .0313 1.039 .157 1 .187 .0156 1.039 .161 1 .197 .0156 1.039 .161 1 .197 .0156 1.039 .161 6 .197 .0313 1.039 .161 1 .236 .0156 1.039 .177 1 .236 .0156 1.039 .177 6 .236 .0313 1.039 .177 1 .250 .0156 1.039 .177 1 .276 .0156 1.132 .217 1 .276 .0313 1.132 .217 1 .315 .0156 1.132 .236 1 .118 .0590 .882 .150 3 .118 .0590 .882 .150 7 .125 .0625 .882 .150 3 .157 .0787 1.102 .157 3 .187 .0938 1.112 .161 3 .197 .0984 1.106 .161 3 .236 .1181 1.106 .177 3 .236 .1181 1.106 .177 7 .250 .1250 1.112 .177 3 .118 .0590 .831 .150 2 .125 .0625 .831 .150 2 .157 .0787 1.039 .157 2

2 3 3 3 3 4 4 4 4 5 5 5 5 6 6 6 6 7 7 8 8 2 3 3 3 4 5 5 6 6 6 3 3 4 5 5 6 6 7 8

 



 l l l l l  l

l l l

Fig. 6



 

 

Fig 1

l l l l l l l

2-RE

 

 

 

L

l l l l l l  l

l l l



 

 

ML Low Feed

Multi function (traversing)

l l l l l l l l l l l l   l

Fig. 1

l l l

 

 

l l l l l l l l

l

4 RE

L

 

 

l l l l l l l   l l l   l

 

 

  l l l   l

.315 .0313 1.132 .236 1 .078 .0394 .854 .142 3 Fig. 3 Fig 1

 

 

l l

l l l l l   l

4-RE

l l l

L

l l

l l

Profiling / Radius Grooving

l l l l   l

RN

Fig. 7

l l

l l

Fig 2

RE

 l l l   l l l l l l  l

L

l l l

l l

l l

  l l l   l l

l l l

l



  l l l   l

RG General Feed

l l l

l

Fig. 2

Profiling

  l l l   l   l l l   l   l l l   l   l l l   l l l l l

4 RE

/

2 3 4 5 6 2 3 4 2 2 3 3

l l l l l l l l l l

Fig. 4

For Non Ferrous Materials

4 RE

GA

L

Type Lead Angle

Cat. No.

R L RLRLRLRLRLRLRLRL R L R L R L

GCM_2002-CG-05 GCM_3002-CG-05 GCM_4002-CG-05

lllllll llll llllll l ll llllll lll

Fig. 5

CG 5°

4 RE

Cut-off (Handed)

10° GCM_20003-CF-10 l l llll 15° GCM_20003-CF-15 l l llll 10° GCM_30003-CF-10 l l llll 15° GCM_30003-CF-15 l l llll

L

CF

GND Insert - CBN Grades GCMN Inserts Shape

Coated CBN

12 & 13

Recommended Cutting Conditions

Stock

Dimensions (Inch / mm )

Sumitomo Catalog Number

See page 15 for RN / RG Description and Comparison

Insert Seat Size

Nose Radius

Overall Length

Fig.

Grooving Width

Width Tolerance

Thickness

Function Chipbreaker

GCMN2010 GCMN2010P GCMN3015 GCMN3015P GCMN4020 GCMN4020P GCMN5025 GCMN5025P GCMN6030 GCMN6030P

l l

Fig. 8

.078

.0394 .8543 .142

2

l

l l

.118

.0590 .8819 .150

3

Fig 2

l

RE

Profiling / Radius Grooving

±.0012 (. 03 )

l l

—

.157

.0787 1.1024 .157

4

L

l

l l

.197

.0984 1.1063 .161

5

l

l l

.236 .078 .118 .157 .197 .236 .078

.1181 1.1063 .177 .0394 .8543 .142 .0590 .8819 .150 .0787 1.1024 .157 .0984 1.1063 .161 .1181 1.1063 .177 .0078 .8307 .142

6 2 3 4 5 6 2

l l l

GCMN2010P-LF l l l GCMN3015P-LF l l l GCMN4020P-LF l l l GCMN5025P-LF l l l GCMN6030P-LF l l l

Fig. 9

Fig 2

Profiling / Radius Grooving

RE

±.0012 (. 03 )

LF

L

GCMN2002 GCMN3002 GCMN3004

l l l l l l l l l l l l l l

.0078 .0157 .0157 .0078 .0157 .0157 .0078 .0157 .0157 .0157 .0157

Fig. 10

.118

.8310 .150

3

GCMN30040-N GCMN4002 GCMN4004 GCMN40040-N GCMN5002 GCMN5004 GCMN50040-N GCMN6004 GCMN6004-N

l

Turning / Grooving

±.0012 (. 03 )

.157

.157

4

Fig 1

—

2-RE

l

L

1.0394

.197

.161

5

l

l l

.236

.177

6

20

l

l = USA Stocked item  = World Wide Warehouse Item

13

CBN Recommended Cutting Conditions

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