Sumitomo General Catalog 2025-2026

Boring Bars D-DCLN / B-PCLN

Coolant Hole Steel with Anti-Vibration Mechanism

Medium Diameter General-purpose Double Clamp

95°

D-DCLN Bottom Facing

Fig 1

With oil hole

DCON

DMIN Min. Bore Dia.

95°

* Applicable Inserts for DCLN For internal diameter machining: Right-handed (R) tool holders are compatible with left-handed (L) or neutral (N) inserts. Left-handed (L) tool holders are compatible with right-handed (R) or neutral (N) inserts. For facing: Right-handed (R) tool holders are compatible with right-handed (R) or neutral (N) inserts. Left-handed (L) toolholders are compatible with left-handed (L) or neutral (N) inserts.

H

LF

GAMF

E

-6°

LHD

Figure shows right-hand (R) tool.

Holder

Parts

Dimensions (inch/ mm )

C

Shim Screw

Applicable Insert

Upper Surface Wrench

Lower Surface Wrench

Cutting Edge Distance

Stock Min. Bore Dia.

Clamp Set

Shim

Rake Angle

Overall Length

Diameter Height

Head

Cat. No.

Fig

R L

Cat. No.

N m

DMINDCON H LF WF LHD GAMF

(For Hex Socket) (For Hex Socket)

D

D16TDCLN R/L 4 D20TDCLN R/L 4 D24UDCLN R/L 4

Steel with Anti-Vibration Mechanism with Oil Hole Steel with Anti-Vibration Mechanism with Oil Hole

l l 1.250 1.000 1.000 12.00 0.640 - l l 1.470 1.250 1.250 12.00 0.765 - l l 1.760 1.500 1.500 14.00 0.890 -

CNS1203B BFTX0309N

-14° -14° -14°

1 1 1 1 1

LH040 LH025

SCP-2

CNS1204B BFTX0409N

CN □□ 43 □ B22

D25T-DCLN R/L1204-32 l l 32 D32T-DCLN R/L1204-40 l l 40 D40U-DCLN R/L1204-50 l l 50

CNS1203B BFTX0307N

25 23 300 17 26 -12° 32 30 300 22 26 -10°

R

5.0

LH040 LH025

SCP-2

CNS1204B BFTX0409N

40 37 350 27 26 -10° 1 Right-handed (R) tool holders are compatible with left-handed (L) or neutral (N) inserts. Left-handed (L) tool holders are compatible with right-handed (R) or neutral (N) inserts. Feed direction of applicable inserts differs according to machining details. (Refer to * note below)

C3

Clamp Set Parts

S

T

Medium Diameter General-purpose Lever Lock

Steel with Anti-Vibration Mechanism

B-PCLN Bottom Facing

Fig 1

V

DMIN Min. Bore Dia.

DCON

95°

W

H

LF

- 10°

- 6°

LHD

Figure shows right-hand (R) tool.

Holder

Parts

Dimensions ( mm )

Shim Pin

Applicable Insert

Lever Pin

Cutting Edge Distance

Wrench

Bolt

Shim

Stock Min. Bore Dia.

Overall Length

Diameter Height

Head Offset

Cat. No.

Fig

R L

Cat. No.

DMIN DCON H LF WF LHD E1

(For Hex Socket)

B32U-PCLN R/L1204-40  B40W-PCLN R/L1204-50 

40 32 30 350 20 29 5.0 50 40 37 450 25 29 6.5

LCS4CA

1 1

Steel with Anti-Vibration Mechanism

CN □□ 43 □ B22

LSC42B LSP4 LH030

LCL4

LCS4

Feed direction of applicable inserts differs according to machining details. (Refer to * note below)

• USA Stocked Item  Worldwide Warehouse Item

E14

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