Boring Bars S-ESYN / BMSKN Type
For Medium Diameter General Pin Lock
Steel
85°
S-ESYN Through Boring
Fig 1
DMIN Min. Bore Dia.
DCON
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85°
H
LF
GAMF
E
Figure shows right-hand (R) tool.
C
Holder
Parts
Dimensions ( mm )
Stock Min. Bore Dia.
Applicable Insert
Shim Eccentric Pin
Wrench
Cutting Edge Distance
Overall Length
Rake Angle
Diameter Height
Head
Cat. No.
Fig
R L
Cat. No.
D
DMIN DCON H LF WF LHD GAMF
(For Hex Socket)
S25R-ESYN R/L1204-34 S32S-ESYN R/L1204-44
CPB42
34 44
25 23 200 17 (20) 32 30 250 22 (22)
-12° -10°
1 1
SN □□ 4 3□
Steel
B41
SSW423
LH030
CPB43S
R
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. The LHD ( ) is a reference value.
DMIN Min. Bore Dia.
Internal Boring BMSKN
S
DCON
T
H
15°
LF
GAMF
V
Holder
Parts
Dimensions (inch)
Min. Bore Dia.
Cutting Edge Height
Cutting Edge Distance
Applicable Insert
Overall Length
Rake Angle
Wrench Wrench Shim Cam Clamp Screw
Diameter Height
Width
W
Cat. No.
Fig
Ref. Page
Cat. No.
R L
N m
DMIN DCON H HF LF WF W GAMF
(For Hex Socket) (For Hex Socket)
BMSKN R/L 244 ▲▲ 1.781 1.250 — — 14.00 0.890 1.480 —
1 1
CPB43S
SN □□ 4 3 B41
3.0 LH030 LH040 SSW423
CCM8F WB8F30
BMSKN R/L 324 ▲
2.563 2.000 — — 16.00 1.281 1.815 —
CPB43
Wrench for shim is sold separately from the main body. Maximum overhang = 3xD
Applicable Inserts S-DSKN / S-PSKN / S-ESKN / S-PSYN / S-ESYN Type
Name of Chipbreaker/ CBN/PCD Photo
EGU
● Refer as well to the Insert Selection Guide (page A10 on). ● Some combinations need to be made to order or cannot be manufactured.
1st Recommended Insert
AC8025P
Grade
P (Steel) H (Hardened Steel) Hard Brittle Material Finishing Medium Cutting Roughing Finishing Medium Cutting Roughing High-speed Finishing Finishing to Medium Cutting Medium to Roughing Finishing Medium Cutting Roughing Coated Uncoated Finishing M (Stainless Steel) K (Cast Iron) S (Exotic Alloy)
Cutting Range
Process
EGU
EMU
EEG
EEM
EUZ
EGZ
EEF
EEG
EEM
SUMIBORON
EFE
SUMIBORON
SUMIBORON
SUMIDIA Binderless
EEF
Continuous Cutting
T1500Z
AC8015P
AC8025P
AC6020M
AC6020M
AC6030M
BN7000/BNC500 SUMIBORON
AC4010K
AC4010K
AC5015S
AC5015S
AC5015S
BNC2010 SUMIBORON
BN1000 SUMIBORON
NPD10
EEF
EEG
EEM
EEM
ESU
EGU
EMU
EEG
EGZ
SUMIDIA
EGZ
EEF
General Cutting
AC8015P
AC8025P
AC8025P
AC6030M
AC6030M
AC6040M
BN7000/BNC500 SUMIBORON
AC4015K
AC4015K No Chipbreaker
AC5015S
AC5015S
AC5025S
BNC2020 SUMIBORON
BN2000 SUMIBORON
DA90
EEF
EEG
EEM
EEF
EEM
EUX
EEG
EGZ
EMX
ESX
Interrupted Cutting
—
AC8025P
AC8035P
AC8035P
AC6030M
AC6040M
AC6040M
BN7000/BNC500
AC420K
AC420K
AC5025S
AC5025S
AC5025S
BNC2020
BN350
Recommended Cutting Conditions
A10 on
A14 on
A16 on
A18 on
A20 on
M2 on
BNC500 is for ductile cast iron.
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E22
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