Sumitomo General Catalog 2025-2026

Turning 55˚ Diamond Positive Inserts

Indexable Insert

RE

DC 55° Diamond 7° Pos. With Hole DC ¢¢ 21.5 ˜ Dimensions (inch) Cutting Edge Length L .3031 Thickness S .0937 Inscribed Circle IC .2500 Hole Dia. D1 .1102

Grade Selection

A2, A3

IC

Chipbreaker Selection B10 on Insert Grade Selection by Part Material

S

L

A10 on

55°

: 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

L55

M14

M27

SUMIBORON (CBN) Inserts

SUMIDIA (PCD) Inserts

SUMIDIA Binderless Inserts

Coated Cermet

Coated Carbide

Carbide

Cermet

C35, D24, D29

E38

Applicable External Holders

Applicable Internal Holders

Nose Radius

Application Range

Shape

Sumitomo Cat. No.

ISO Cat. No.

RE

DCGT21.5.001RFYS DCGT0702003R-FYS .0012 QQQQQQQQQQQQQQQ DCGT21.5.001LFYS DCGT0702003L-FYS .0012 QQQQQQQQQQQQQQQ DCGT21.50RFYS DCGT070201R-FYS .0039 QQQQQQQQQQQQQQQ

★★ ★ QQQQ QQ ★★ ★ QQQQ QQ ★★ ★ QQQQ QQ ★★ ★ QQQQ QQ ★★ ★ QQQQ QQ ★★ ★ QQQQ QQ ★★ ★ QQQQ QQ ★★ ★ QQQQ QQ

(R/L)FYS

(ap)

.08

DCGT21.50LFYS DCGT070201L-FYS

.0039 QQQQQQQQQQQQQQQ

.04

DCGT21.50.5RFYS DCGT070202R-FYS .0078 QQQQQQQQQQQQQQQ

DCGT21.50.5LFYS DCGT070202L-FYS

.0078 QQQQQQQQQQQQQQQ

(f)

0

.016 .008

DCGT21.51RFYS DCGT070204R-FYS .0156 QQQQQQQQQQQQQQQ

DCGT21.51LFYS DCGT070204L-FYS

.0156 QQQQQQQQQQQQQQQ

15°

C

DCET21.5.001RFYS DCET0702003R-FYS .0012 QQQQQQQQQQQQQQQ DCET21.5.001LFYS DCET0702003L-FYS .0012 QQQQQQQQQQQQQQQ

★ QQQQ QQ ★ QQQQ QQ ★ QQQQ QQ ★ QQQQ QQ ★ QQQQ QQ ★ QQQQ QQ ★ QQQQ QQ ★ QQQQ QQ

(R/L)FYS

DCET21.50RFX DCET070201R-FYS DCET21.50LFX DCET070201L-FYS DCET21.50.5RFX DCET070202R-FYS DCET21.50.5LFX DCET070202L-FYS DCET21.51RFX DCET070204R-FYS DCET21.51LFX DCET070204L-FYS

.0039 QQQQQQQQQQQQQQQ .0039 QQQQQQQQQQQQQQQ .0078 QQQQQQQQQQQQQQQ .0078 QQQQQQQQQQQQQQQ .0156 QQQQQQQQQQQQQQQ .0156 QQQQQQQQQQQQQQQ

(ap)

.08

.04

D

(f)

0

.016 .008

15°

DCGT21.5.001RFY DCGT0702003R-FY .0012 QQQQQQQQQQQQQQQ

★★ ★ QQQQ QQ ★★ ★ QQQQ QQ

(R/L)FY

R

DCGT21.5.001LFY DCGT0702003L-FY

.0012 QQQQQQQQQQQQQQQ .0039 QQQQQQQQQQQQQQQ .0039 QQQQQQQQQQQQQQQ .0078 QQQQQQQQQQQQQQQ .0078 QQQQQQQQQQQQQQQ .0156 QQQQQQQQQQQQQQQ .0156 QQQQQQQQQQQQQQQ .0012 QQQQQQQQQQQQQQQ .0012 QQQQQQQQQQQQQQQ .0031 QQQQQQQQQQQQQQQ .0031 QQQQQQQQQQQQQQQ .0039 QQQQQQQQQQQQQQQ .0039 QQQQQQQQQQQQQQQ .0071 QQQQQQQQQQQQQQQ .0071 QQQQQQQQQQQQQQQ .0156 QQQQQQQQQQQQQQQ .0156 QQQQQQQQQQQQQQQ

DCGT21.50RFY DCGT21.50LFY

DCGT070201R-FY DCGT070201L-FY

( a p )

★★ ★ ★ ★★ ★ ★ ★★ ★ ★ ★★ ★ ★ ★★ ★★ ★ ★★ ★★ ★

.08

.04

DCGT21.50.5RFY DCGT070202R-FY DCGT21.50.5LFY DCGT070202L-FY

S

( f )

0

.016 .008

DCGT21.51RFY DCGT21.51LFY

DCGT070204R-FY DCGT070204L-FY

15°

DCET21.5.001RFY DCET0702003R-FY DCET21.5.001LFY DCET0702003L-FY DCET21.5.003RFY DCET0702008R-FY DCET21.5.003LFY DCET0702008L-FY DCET21.50RFY DCET070201R-FY DCET21.50LFY DCET070201L-FY DCET21.5.007RFY DCET0702018R-FY DCET21.5.007LFY DCET0702018L-FY DCET21.51RFY DCET070204R-FY DCET21.51LFY DCET070204L-FY

★ QQQQ QQ ★ QQQQ QQ ★ QQQQ QQ ★ QQQQ QQ ★ QQQQ QQ ★ QQQQ QQ ★ QQQQ QQ ★ QQQQ QQ ★ QQQQ QQ ★ QQQQ QQ

(R/L)FY

T

( a p )

.08

.04

V

( f )

0

.016 .008

15°

W

Values for nose radius RE prefixed with "<" indicate negative tolerances.

B83

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