
CBN Small Hole Boring Bar Systems BSME/SEXC Series Features Basic System - New ultra small boring bar Sleeve with CBN cutting edge - Internal coolant - Easy setting and handling - High accuracy - Carbide body for high rigidity CBN-Insert - One sleeve for different diameters Boring bar (internal coolant) 2 Types of CBN Small Hole Boring Bar System BSME - CBN Brazed Cutting Edge Type SEXC - Indexable CBN Insert Type Min. bore diameter: Ø2,5-5,0mm Min. bore diameter: Ø4,0-6,0mm 2 corner inserts Unique cutting edge shape with high quality Internal coolant Internal coolant and sharpness hole (standard) hole (standard) Clamp screws Clamp screws Sleeve Sleeve Location pin Location pin Boring bar Boring bar Clamp screws Excellent repeatability of boring bar (deviation within 0,020mm) Location pin for controlled cutting edge position Application Range Recommended Cutting Conditions Low speed may cause chat- Spindle Speed >2000min-1 tering and chipping on the (n) Sumiboron / SumiDia SEXC cutting edge. High Precision Tools Type BSME Excessive depth of cut may Type cause larger tool deflection Depth of Cut (ap) 0,01 - 0,15mm resulting in deterioration of bore accuracy. ≈ 2,0 3,0 4,0 5,0 6,0 Feed Rate (f) 0,01 - 0,1mm/rev - Bore Diameter (mm) M36