Sumitomo General Catalog 2025-2026

Turning Round Negative Inserts RN Round Neg. With Hole RN ¢¢ 43 ˜ Dimensions (inch) Inscribed Circle IC .5000 Thickness S .1875 Hole Dia. D1 .2031

Indexable Insert

Grade Selection

A2, A3

Chipbreaker Selection B10 Insert Grade Selection by Part Material

A10

: Interrupted Cutting 1st Recommended : Interrupted Cutting 2nd Recommended

: General Cutting 1st Recommended : General Cutting 2nd Recommended

: Continuous Cutting 1st Recommended : Continuous Cutting 2nd Recommended

C13

Applicable External Holders

P Steel M Stainless Steel K Cast Iron N Non-Ferrous Metal S Exotic Alloy H Hardened Steel

Coated Cermet Cermet

Coated Carbide

Carbide

B

Sumitomo Cat. No.

Application Range

Shape

ISO Cat. No.

IC S D1

Q

Q

QQQQQ QQ

ENT

RNMG43ENT

F

.5000 .1875 .2031

Q

RNMA43

Q

Q

QQQQQ QQ

.5000 .1875 .2031

●●

Q

: Interrupted Cutting 1st Recommended : Interrupted Cutting 2nd Recommended

: General Cutting 1st Recommended : General Cutting 2nd Recommended

: Continuous Cutting 1st Recommended : Continuous Cutting 2nd Recommended

P Steel M Stainless Steel K Cast Iron N Non-Ferrous Metal S Exotic Alloy H Hardened Steel

RN ¢¢ 54 ˜ Dimensions (inch)

Inscribed Circle IC .6250 Thickness S .2500 Hole Dia. D1 .2500

Coated Cermet

Coated Carbide

Carbide

Cermet

Sumitomo Cat. No.

Application Range

C

Shape

ISO Cat. No.

IC S D1

RNMG54ENU

Q

Q

QQQQQ QQ

ENU

F

.6250 .2500 .2500

Q

: Interrupted Cutting 1st Recommended : Interrupted Cutting 2nd Recommended

: General Cutting 1st Recommended : General Cutting 2nd Recommended

: Continuous Cutting 1st Recommended : Continuous Cutting 2nd Recommended

D

P Steel M Stainless Steel K Cast Iron N Non-Ferrous Metal S Exotic Alloy H Hardened Steel

RN ¢¢ 64 ˜ Dimensions (inch)

R

Inscribed Circle IC .7500 Thickness S .2500 Hole Dia. D1 .3126

Coated Cermet

Coated Carbide

Carbide

Cermet

Sumitomo Cat. No.

Application Range

Shape

ISO Cat. No.

IC S D1

S

RNMG64ENV

Q

Q

QQQQQ QQ

ENV

F

.7500 .2500 .3126

Q

: Interrupted Cutting 1st Recommended : Interrupted Cutting 2nd Recommended

: General Cutting 1st Recommended : General Cutting 2nd Recommended

: Continuous Cutting 1st Recommended : Continuous Cutting 2nd Recommended

T

P Steel M Stainless Steel K Cast Iron N Non-Ferrous Metal S Exotic Alloy H Hardened Steel

RN ¢¢ 84 ˜ Dimensions (inch)

Inscribed Circle IC 1.000 Thickness S .2500 Hole Dia. D1 .3622

V

Coated Cermet

Coated Carbide

Carbide

Cermet

Sumitomo Cat. No.

Application Range

Shape

ISO Cat. No.

IC S D1

W

RNMG84ENY

Q

Q

QQQQQ QQ

ENY

F

1.000 .2500 .3622

Q

: Interrupted Cutting 1st Recommended : Interrupted Cutting 2nd Recommended

: General Cutting 1st Recommended : General Cutting 2nd Recommended

: Continuous Cutting 1st Recommended : Continuous Cutting 2nd Recommended

P Steel M Stainless Steel K Cast Iron N Non-Ferrous Metal S Exotic Alloy H Hardened Steel

RN ¢¢ 86 ˜ Dimensions (inch)

Inscribed Circle IC 1.000 Thickness S .3750 Hole Dia. D1 .3622

Coated Cermet

Coated Carbide

Carbide

Cermet

Sumitomo Cat. No.

Application Range

Shape

ISO Cat. No.

IC S D1

RNMG86ENY

Q

Q

QQQQQ QQ

ENY

F

1.000 .3750 .3622

Q

B39

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