CBN - SUMIBORON Small Hole Boring Bars BSME
■ Features ● Achieves the minimum bore diameter of ø2.5mm in boring of hardened steel ● Achieves high-precision cutting edge positioning thanks to the newly developed clamp mechanism ● Expands the range of small hole boring to achieve more high-efficiency machining requiring no grinding ● BSME (Brazed) Can be used with work diameters from ø2.5 to 5.0mm ● SEXC (Indexable Insert) Can be used with work diameters from ø4.0 to 6.0mm
L
CBN - SUMIBORON Brazed
Carbide Coolant Hole
BSME Internal Turning and Facing
Fig 1
Fig 2
DMIN Min. Bore Dia. 10°
DMIN Min. Bore Dia.
10°
RE
RE
CDX
CDX
LF
LF
Holder (
CBN - SUMIBORON)
Dimensions ( mm )
Min. Bore Dia.
Neck Diameter
Overall Length
Cutting Edge Distance
Max. Boring Depth
Corner Radius
BN2000
Diameter
Applicable Sleeve
Cat. No.
Fig
R L
DMIN DCON DN
LF
WF
CDX
RE 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
BSME R/L 25020D2S6 BSME R/L 25020D3S6 BSME R/L 25020D4S6 BSME R/L 30020D2S6 BSME R/L 30020D3S6 BSME R/L 30020D4S6 BSME R/L 35020D2S6 BSME R/L 35020D3S6 BSME R/L 35020D4S6 BSME R/L 40020D2S6 BSME R/L 40020D3S6 BSME R/L 40020D4S6 BSME R/L 45020D2S6 BSME R/L 45020D3S6 BSME R/L 45020D4S6 BSME R/L 50020D2S6 BSME R/L 50020D3S6 BSME R/L 50020D4S6
2.5 2.5 2.5 3.0 3.0 3.0 3.5 3.5 3.5 4.0 4.0 4.0 4.5 4.5 4.5 5.0 5.0 5.0
6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0
2.0 2.0 2.0 2.5 2.5 2.5 3.0 3.0 3.0 3.5 3.5 3.5 4.0 4.0 4.0 4.5 4.5 4.5
32.0 34.5 37.0 32.8 35.8 38.8 33.5 37.0 40.5 33.9 37.9 41.9 35.0 39.5 44.0 35.8 40.8 45.8
1.20 1.20 1.20 1.45 1.45 1.45 1.70 1.70 1.70 1.95 1.95 1.95 2.20 2.20 2.20 2.45 2.45 2.45
5.3 7.8
1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
10.3
6.3 9.3
12.3
7.3
10.8 14.3
HBSM6020 HBSM6020A
8.3
12.3 16.3
9.3
13.8 18.3 10.3 15.3 20.3
The BSME requires HBSM6020 (A) adapter sleeve (sold separately).
Alignment Jig Cat. No.
Fig 1
Fig 2
Stock
ø20 DCB
ø20 DCB
M8
Rc1/8
AFBSM60
19
LF
LF
This jig is used for centring sleeves when setting them into holders.
Application Range
Achieves high-precision cutting edge positioning by combining a tool/holder that has a tapered rear end with a sleeve having an internal positioning pin. (common to BSME and SEXC types) Set Screw Newly Developed Clamp Mechanism
Sleeve
Dimensions (Inch / mm )
Set Screw
OD Dia.
Bore Dia.
Overall Length
Wrench
SEXC Indexable Type
Cat. No.
Fig
DC DCB LF HBSM601905 ● .750 .236 3.150 1
BSME Brazed Type
BT0506 TH025 HBSM602054 ● 1.000 .236 3.150 1 HBSM6020 20 6.0 80 1 HBSM6020A 20 6.0 80 2 Adapter sleeve is optional. • USA Stocked Item Worldwide Warehouse Item
Tool/Holder
Good
0.08
0.12
0.16
0.20
0.24
Max. Work Diameter (inch)
Tapered Rear End
Positioning Pin
Adapter Sleeve
L114
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