SUMIBORON Small Hole Boring Bars SEXC Type Carbide SUMIBORON Coolant Hole Screw-on SEXC Fig 1 DMIN Min. Bore Dia. Internal Turning and Facing 10° DN DCON WF Boring Bars CDX LF GAMF Holder Stock Min. Neck Overall Cutting Edge Max. Boring Rake Parts Bolt Dimensions (mm) Wrench E Diameter Bore Dia. Diameter Length Distance Depth Angle Applicable Cat. No. Fig R L Sleeve Nm DMIN DCON DN LF WF CDX GAMF C E06D2-SEXC R/L03-04P ● ● 4.0 6.0 3.75 33.75 1.95 8 -13° 1 MIB1.6-2 0.2 E06D3-SEXC R/L03-04P ● ● 4.0 6.0 3.75 37.75 1.95 12 -13° 1 E06D2-SEXC R/L03-05P ● ● 5.0 6.0 4.75 35.25 2.45 10 -12° HBSM6020 1 MIB1.6-2.5 0.2 SDBSM E06D3-SEXC R/L03-05P ● ● 5.0 6.0 4.75 40.25 2.45 15 -12° HBSM6020A 1 E06D2-SEXC R/L03-06P ● ● 6.0 6.0 5.75 36.75 2.95 12 -11° 1 D MIB1.6-3 0.2 E06D3-SEXC R/L03-06P ● ● 6.0 6.0 5.75 42.75 2.95 18 -11° 1 The SEXC Type needs the HBSM6020 (A) adapter sleeve (sold separately). Insert ( SUMIBORON) Dimensions (mm) R Fig 1 Fig 2 Nose Fig 1 ø20 DCB ø20 DCB BN2000 BN7000 Radius RE M8 Rc1/8 Cat. No. Fig ø3.31 7° RE 19 LF LF S 2NU-ECXA 030X02LE ● 0.2 1 1.15 75° 2NU-ECXA 030X02LF ● ● 0.2 1 Sleeve Dimensions (mm) Part Number Suffix: LE: Honing, LF: Sharp Edge Bore Overall Set Wrench Stock Dia. Length Screw Alignment Jig Cat. No. Fig T Cat. No. Stock DCB LF HBSM6020 ● 6.0 80 1 BT0506 TH025 HBSM6020A ● 6.0 80 2 AFBSM60 ● V This jig is used for centring sleeves when setting them into holders. W Application Range Recommended Cutting Conditions May cause chattering or chipping Drilling Precision Very Small Diameter Turning Small Diameter Turning Indexable Type Spindle Speed n Above 2,000 min-1 at the cutting edge in low-speed SEXC Type machining. Excessive depth of cut causes deformation Brazed Type Depth of Cut ap 0.01 to 0.15mm of the tool, which consequently leads to BSME Type deterioration of dimensional tolerance. Good 2.0 3.0 4.0 5.0 6.0 Feed Rate f 0.01 to 0.10mm/rev − Max. Work Diameter (mm) Application Examples Hardened Alloy Steel Valve Component BSME Bearing Steel: Small Automotive Component SEXC The BSME type provides stable machining and a tool life that is The SEXC type provides drastically reduced tool costs and a tool over 2 times longer than our competitors' CBN tools. life that is 1.5 times longer than our competitors' brazed CBN tools. Brazed Type Indexable Insert Type 1,700 holes 1,500 holes BSME Type SEXC Type Competitor's Competitor's ø4.0 1,000 holes ø5.0 600 holes Brazed CBN Tool CBN Tool 0 500 1,000 1,500 2,000 0 500 1,000 1,500 No. of Workpieces (pcs) No. of Workpieces (pcs) Work Material: Hardened Alloy Steel Valve Component (Automotive Component) Work Material: Bearing Steel Small Automotive Component (60HRC) Tool: BSME R50020D2S6 Grade: BN2000 Holder: E06D2-SEXC R/L03-04P Insert: 2NU-ECXA 030X02LF (BN2000) Cutting Conditions: vc = 118m/min (7,500min-1), f = 0.02mm/rev, ap = 0.10mm Dry Cutting Conditions: vc = 50m/min (4,000min-1), f = 0.02mm/rev, ap = 0.02mm Wet N m Recommended Tightening Torque (N·m) ● mark: Standard stocked item (new product/expanded item) E65