CBN - SUMIBORON Small Hole Boring Bars SEXC Type
SUMIBORON Screw-on
Carbide Coolant Hole
SEXC Internal Turning and Facing
Fig 1
DMIN Min. Bore Dia. 10°
CDX
LF
GAMF
L
Holder
Parts
Dimensions ( mm )
Neck Diameter
Overall Length
Cutting Edge Distance
Max. Boring Depth
Rake Angle Applicable Sleeve
Stock Min.
Bolt
Wrench
Diameter
Bore Dia.
Cat. No.
Fig
R L
N m
DMIN DCON DN LF WF CDX GAMF
E06D2-SEXC R/L03-04P E06D3-SEXC R/L03-04P E06D2-SEXC R/L03-05P E06D3-SEXC R/L03-05P E06D2-SEXC R/L03-06P E06D3-SEXC R/L03-06P
4.0 4.0 5.0 5.0 6.0 6.0
6.0 3.75 33.75 1.95 8 6.0 3.75 37.75 1.95 12 6.0 4.75 35.25 2.45 10 6.0 4.75 40.25 2.45 15 6.0 5.75 36.75 2.95 12 6.0 5.75 42.75 2.95 18
-13° -13° -12° -12° -11° -11°
1 1 1 1 1 1
0.2
MIB1.6-2
HBSM6020 HBSM6020A
0.2
MIB1.6-2.5
SDBSM
0.2
MIB1.6-3
The SEXC Type needs the HBSM6020 (A) adapter sleeve (sold separately).
Insert (
SUMIBORON)
Dimensions ( mm )
Fig 1
Fig 2
Nose Radius
Fig 1
ø20 DCB
ø20 DCB
RE
M8
Rc1/8
Cat. No.
Fig
ø3.31
7°
RE
19
LF
LF
2NU-ECXA030X02LE 2NU-ECXA030X02LF
0.2 1
1.15
75°
0.2 1 Part Number Suffix: LE: Honing, LF: Sharp Edge
Sleeve
Dimensions ( mm )
Set Screw
Bore Dia.
Overall Length
Wrench
Alignment Jig Cat. No.
Cat. No.
Fig
DCB LF
Stock
HBSM6020 HBSM6020A
6.0 80 6.0 80
1 2
BT0506 TH025
AFBSM60
This jig is used for centring sleeves when setting them into holders.
Application Range
Recommended Cutting Conditions
May cause chattering or chipping at the cutting edge in low-speed machining. Excessive depth of cut causes deformation of the tool, which consequently leads to deterioration of dimensional tolerance.
Spindle Speed n
Above 2,000 RPM
SEXC Type Indexable Type
Depth of Cut a p
0.0004" to 0.006"
BSME Type Brazed Type
Good
0.08
0.12
0.16
0.20
0.24
Feed Rate f
0.0004 to 0.004 IPR
−
Max. Work Diameter (inch)
Application Examples
BSME
SEXC The SEXC type provides drastically reduced tool costs and a tool life that is 1.5 times longer than our competitors' brazed CBN tools. Bearing Steel: Small Automotive Component
Hardened Alloy Steel Valve Component
The BSME type provides stable machining and a tool life that is over 2 times longer than our competitors' CBN tools.
Indexable Insert Type SEXC Type
Brazed Type BSME Type
1,500 holes
1,700 holes
Competitor's Brazed CBN Tool
Competitor's CBN Tool
1,000 holes
600 holes
0
500
1,000 1,500
0 500
1,000 1,500 2,000
No. of Workpieces (pcs)
No. of Workpieces (pcs)
Part Material: Hardened Alloy Steel Valve Component (Automotive Component) Tool: BSME R50020D2S6 Grade: BN2000 Cutting Conditions: v c = 387 SFM (7,500 RPM), f = 0.0008 IPR, a p = 0.004” Dry
Part Material: Bearing Steel Small Automotive Component (60HRC) Holder: E06D2-SEXC R/L03-04P Insert: 2NU-ECXA 030X02LF (BN2000) Cutting Conditions: v c = 164 SFM (4,000 RPM), f = 0.0008 IPR, a p = 0.0008” Wet
L115
• USA Stocked Item Worldwide Warehouse Item ▲ USA Limited Availability Item
N m Recommended Tightening Torque (N·m)
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