Sumitomo General Catalog 2025-2026

CBN - SUMIBORON Round Insert Holders / Jig Borer Holders PR

● Lever lock clamping system ● Easy operation; the lack of protrusions on the insert rake face allows smooth chip evacuation. ● Versatile round insert can be applied to various operations.

External Profiling PRGC

L

15°

Fig 1

LH

IC LF

Holder 

Dimensions ( mm )

Stock Inscribed Circle IC

Height H

Width B

Overall Length LF

Cutting Edge WF

Edge Height HF

Head LH

Applicable Insert

Cat. No.

Fig

R L PRGC R/L 3225P9 

9

32 25

170

32

32

18

RCGA094 1

For General External Turning PRDC

Fig 1

IC

LH

LF

Holder 

Dimensions ( mm )

Stock Inscribed Circle IC R L

Height H

Width B

Overall Length LF

Cutting Edge WF

Edge Height HF

Head LH

Applicable Insert

Cat. No.

Fig

PRDC N 3225P9

9

32 25

170

12.5

32

25

RCGA094 1

For General External Turning PRGN

Fig 1

IC

LH

LF

Holder 

Dimensions (mm)

Stock Inscribed Circle IC

Height H

Width B

Overall Length LF

Cutting Edge WF

Edge Height HF

Head LH

Applicable Insert

Cat. No.

Fig

R L PRGN R/L 3225P9  

9

32 25

170

32

32

10

RNGA094 1

Inserts are not embedded into tool holders.

Insert (

SUMIBORON) 

Dimensions (mm)

Fig 1

Fig 2

Cat. No.

Fig

RCGA094 RNGA094

1 2

6.35

6.35

 

L120

Please refer to C Section: ceramic holders CRDNN (C47) and CRSN(R/L) and methods for holding dimple lock inserts

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