CBN - SUMIBORON Small Hole Boring Bars BSME Type
■ 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 Type (Brazed Type) Can be used with work diameters from ø2.5 to 5.0mm ● SEXC Type (Indexable Insert Type) Can be used with work diameters from ø4.0 to 6.0mm
L
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 (
SUMIBORON)
Dimensions ( mm )
Neck Diameter
Overall Length
Min. Bore Dia.
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
1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
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
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 Type 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.
Sleeve
Newly Developed Clamp Mechanism
Dimensions ( mm )
Set Screw
Bore Dia.
Overall Length
Wrench
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
Cat. No.
Fig
DCB LF
HBSM6020 HBSM6020A
6.0 80 6.0 80
1 2
BT0506 TH025
Tool/Holder
Worldwide Warehouse Item
Adapter sleeve is optional.
Tapered Rear End
Positioning Pin
Adapter Sleeve
L114
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