Общий каталог Sumitomo 2018 - 2019 - страница 539

SUMIBORON Small Hole Boring Tools For Hardened Steel BNBB Type BNBB type small hole boring tools for hardened work pieces up to diameter 3,5 mm „Sumiboron“ Brazed Boring Tools for Small Hole Boring Dimensions (mm) Grade of Cat. No. Stock Applicable brazed cutting holder Dmin d l1 h r edge BNBB 03 R l 3,5 3 60 2,4 0,2 HBB 316 BNBB (Carbide shank) BNBB 04 R l 4,5 4 60 3,4 0,2 HBB 416 SUMIBORON BNBB 05 R l 5,5 5 80 4,4 0,2 HBB 516 (CBN) BNBB 06 R l 6,5 6 80 5,4 0,2 HBB 616 BN250 BNBB 08 R l 8,5 8 100 7,4 0,2 HBB 816 Holder Spare Parts Dimensions (mm) Cat. No. Stock Screw Wrench d1 L d2 H HBB 316 l 3 HBB 416 l 4 HBB 516 l 16 100 5 15 HBB 616 l 6 HBB 816 l 8 BT 0404 TH 020 Recommended Cutting Conditions Precaution On Use Work SUMIBORON BN250 Notes Material Low speed may cause chattering Cutting 30 ~ 150 m/ in cutting process and chipping speed (v c) min Sumiboron / SumiDia occurence on the cutting edge. Tools Hardened steels 0,03 ~ 0,1 Feed rate ( f ) - mm/rev (HRC45~68) l Adjust overhang to achieve absolute minimum. Excessive depth of cut may l For use of a small diameter brazed boring tool, select Depth of cut 0,03 ~ 0,2 cause larger deformation of high speed and small feed rate, as much as possible. (doc) mm tool,resulting in deterioration of bore accuracy. M40 l = Euro stock