Sumitomo General Catalog 2025-2026

Turning Square Positive Inserts

Indexable Insert

SP Square 11° Pos. Without Hole SP ¢¢ 42 ˜ Dimensions (inch) Cutting Edge Length L .5000 Thickness S .1250 Inscribed Circle IC .5000

RE

IC

Grade Selection

A2, A3

Chipbreaker Selection B10 on Insert Grade Selection by Part Material

S

L

A10 on

90°

: 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

B

M17

SUMIDIA (PCD) Inserts

Coated Cermet

Coated Carbide

Carbide

Cermet

B133

Ceramic Inserts

Nose Radius

Application Range

Shape

Sumitomo Cat. No.

ISO Cat. No.

RE

SPMR421EFK SPMR120304N-FK .0156 QQQQQQQQQQQQQQQQQQQQQQQ ★ ★★ QQ Q SPMR422EFK SPMR120308N-FK .0313 QQQQQQQQQQQQQQQQQQQQQQQ ★ ★● QQ Q

EFK

( a p )

.08

.04

( f )

0

0 °

.016 .008

SPMR421ENF SPMR120304N-SF .0156 SPMR422ENF SPMR120308N-SF .0313 SPMR423ENF SPMR120312N-SF .0469 SPMR421EUJ SPMR120304N-UJ .0156 SPMR422EUJ SPMR120308N-UJ .0313

QQQQQ QQ QQQQQ QQ QQQQQ QQ

Q Q Q

ENF

FF FF

( a p )

★★ ★●

.08 .04 .12 .16

( f )

0

0 °

.008 .016 .024

C

QQQQQ QQ QQQQQ QQ

Q Q

EUJ

0 .08 .04 .12 .16 ( a p )

★★

( f )

0 °

.008 .016 .024

SPMN421 SPMN422 SPMN423

SPMN120304 SPMN120308 SPMN120312 SPGN120304 SPGN120308 SPGN120312

QQQQQ QQ

★●★ F Q

F

.0156 .0313 .0469

D

●● ●●

Q

★★★ F Q ★★★ ★★★ F Q ★★★

Q Q

Q Q

★★ ★★ ★●

SPG421 SPG422 SPG423

.0156 QQQQQQQQQQQQQQQ .0313 Q ●● QQ F QQQQQQQQQ .0469 Q ●● QQ F QQQQQQQQQ

★●

R

●● F

● ★●

Q

QQQQ QQ

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

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

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

S

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

SP ¢¢ 43 ˜ Dimensions (inch)

Cutting Edge Length L .5000 Thickness S .1875 Inscribed Circle IC .5000

T

Coated Cermet

Coated Carbide

Carbide

Cermet

B133

Ceramic Inserts

Nose Radius

Application Range

V

Shape

Sumitomo Cat. No.

ISO Cat. No.

RE

SPG432 SPG433

SPGN120408 .0313 Q ●● QQ F QQQQQQQQQ SPGN120412 .0469 Q ●● QQ F QQQQQQQQQ

QQQQ QQ QQQQ QQ

Q

W

B99

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