SUMIBORON / SUMIDIA Precision Tools BSME M36-38 SEXC M36-39 BNBB M40 BNZ M41 Very small boring bar - brazed CBN boring tool for small Small hole boring tools Small hole boring bars type diameter boring l Solid carbide shank boring bar l Solid carbide shank boring bar l CBN cutting edge is brazed on l Solid carbide boring bars with brazed CBN tip and inner with indexable CBN insert and to a solid carbide shank. with economical CBN insert. coolant supply. inner coolant supply. l For tiny hole diameter boring in l For small hole diameter boring l Small hole boring l Small hole boring hardened steel. in hardened steel. for hardened steels. for hardened steels. l Min. boring dia. is ø 2,5 mm. l Min. boring dia. is ø 4,0 mm. l Min. boring dia. is ø 3,5 mm. l Min. boring dia. is ø 7,0 mm. DABB-C DABB-N DABB-B BNB M41 GWB / PSC M42-43 BNGG M44 DABB M45 Small hole boring bars CBN Grooving System for Threading holders Small hole boring tools Hardened Steels l Solid carbide boring bars l Tangential Inserts l CBN cutting edge for hardened l PCD cutting edge for finishing of with economical CBN and PCD – Double clamp holder steel small non-ferrous parts insert. l Groove Widths from 1,5 – 6,0mm l Adjustable threading after l Min. boring dia. is ø 3,0 mm. l Min. boring dia. is ø 10,0 mm. regrinding. l New CBN grade for interrupted l DABB-C for boring grooving DABB-N for profiling and Newl ISO-PSC polygon modular corner groovingDABB-Bfor back boring grooving system M34 Sumiboron / SumiDia Tools