Designation ITS BORE USER GUIDE MB Connection ITSBORE is a modular toolholder system for boring, milling, drilling and tapping. This rigid, high-precisionsystem is manufactured inone of the world’s mostadvanced production facilities. The system is designedwith extreme flexibility and simplicity, making itd1øm1Size AllenKey (mm)TighteningTorque(Nm)!MaximumDrivingTorque(Nm) suitable for machine tools, machining centers andflexible manufacturing systems.It is recommendedMB1414102.5 2-2.5 40 for machining strict tolerances with a high degree of MB16 16 10 2.5 2-2.5 40 surface finish. Its cylindrical-conical coupling and MB20 20 13 3 4-4.5 70 radial-expanding pin ensure maximum rigidity and MB25 25 16 3 6.5-7.5 120 concentricity in boring and milling. The system has MB32 32 20 4 7-8 200 an internal coolant supply in all components. MB40 40 25 5 16-18 400 d1 MB50 50 32 6 30-35 700 m1 MB63 63 42 8 70-80 1600 MB80 80 42 8 70-80 1600 MB110 110 76 14 200-220 6300 S 389