
MBU type drill head B ra ze d d r i l l h e a d w i t h exte r n a l s i n g l e - s t a r t t h re a d f o r s i n g l e t u b e s y s te m ( STS ) , to ol d ia m ete r ø8 - ø 1 4 .7 9 mm, CI CT = 1 DCONMS H (Wrench size) (DCN-DCXh6) DC Cutting edge OAL P Steel M Stainless K Cast iron N Non-ferrous Standard products S Superalloys : First choice : Second choice H Hard materials Coated Drill tube Designation DC OAL DCONMS H 1122 3112 Designation Dia. (mm) MBU-0999-2 9.40 9.4 UMBB083 8.3 34 7.2 7 MBU-1199-1 11.00 11 UMBB100 10 34 8.6 9 䖃: Line up Non-standard products (to be supplied on request) When ordering ISO classifications for grades ISO area MBU-0899-1 xx.xx 1122 Grade 1122 5 10 15 20 25 30 35 40 Drill head Diameter (mm) Grade 3112 3112 e.g. Designation for tool diameter ø9 mm: MBU-0899-1 9.00 1122 3112 3112 3112 Drill tube Designation DCN DCX OAL DCONMS H Designation Dia. (mm) MBU-0899-1 xx.xx 8 8.32 UMBB071 7.1 34 6 6 MBU-0899-2 xx.xx 8.33 8.65 UMBB071 7.1 34 6 6 MBU-0899-3 xx.xx 8.66 8.99 UMBB071 7.1 34 6 6 MBU-0999-1 xx.xx 9 9.32 UMBB083 8.3 34 7.2 7 MBU-0999-2 xx.xx 9.33 9.65 UMBB083 8.3 34 7.2 7 MBU-0999-3 xx.xx 9.66 9.99 UMBB083 8.3 34 7.2 7 MBU-1099-1 xx.xx 10 10.32 UMBB090 9 34 7.6 8 MBU-1099-2 xx.xx 10.33 10.65 UMBB090 9 34 7.6 8 MBU-1099-3 xx.xx 10.66 10.99 UMBB090 9 34 7.6 8 MBU-1199-1 xx.xx 11 11.32 UMBB100 10 34 8.6 9 MBU-1199-2 xx.xx 11.33 11.65 UMBB100 10 34 8.6 9 MBU-1199-3 xx.xx 11.66 11.99 UMBB100 10 34 8.6 9 MBU-1349-1 xx.xx 12 12.36 UMBB110 11 34 9.1 10 MBU-1349-2 xx.xx 12.37 12.73 UMBB110 11 34 9.1 10 MBU-1349-3 xx.xx 12.74 13.1 UMBB110 11 34 9.1 10 MBU-1349-4 xx.xx 13.11 13.49 UMBB110 11 34 9.1 10 MBU-1449-1 xx.xx 13.5 13.82 UMBB120 12 34 10.8 11 MBU-1449-2 xx.xx 13.83 14.15 UMBB120 12 34 10.8 11 MBU-1449-3 xx.xx 14.16 14.48 UMBB120 12 34 10.8 11 MBU-1449-4 xx.xx 14.49 14.79 UMBB120 12 34 10.8 11 Reference pages: Standard cutting conditions → 20, Drill tube (STS) → 16 10 www.tungaloy.com