Depth of cut (mm) Depth of cut (mm) Depth of cut (mm) General Steel Depth of cut (mm) Stainless Steel Cast Iron Heat Resistive Alloy Hardened Steel Non- Ferrous Metal Powder Metal Boring Bars Boring Bars Boring Tool Series Recommended Over Hang Length / Shank Diameter (L/D) Type of boring bar Over hang length (L/D)12345 6 7 8 9 10 l Steel Shank Rigid head design for low cost hole boring. l Anti-Vibration Type Shank (X-Bar for pos. inserts) Chatter killer system eliminates vibration - improves productivity - (X-Bar for neg. inserts) improves quality l Carbide Shank High rigidity shank for high accuracy hole boring. Grades Process Work Material Tool Material High Precision Finish~Light Cut Medium Cut New CVD New Coated Carbide PVD New Cermet Coated Cermet Carbide SumiBoron SumiDia Preferred choice Suitable Recommended Chip Breakers M-Class Finish-Light-Cut M-Class Light-Medium-Cut G-Class Ground Typ G-Class Breaker 4 4 4 4 NSI NSU NMU 2 NFK 2 2 L/RSD 2 NSC NSF L/RFX NLUWNLU NUS L/RFYS L/RSDW L/RW NFC L/RFY 0 0,2 0,4 0 0,2 0,4 0 0,2 0,4 0 0,2 0,4 Feed rate (mm/rev) Feed rate (mm/rev) Feed rate (mm/rev) Feed rate (mm/rev) E7