Lead angle 0°/ 2° MEC/MECX Ramping/Helical milling Ramping angle is recommended under RMPX. Cutting dia. Applicable inserts Max. ramping angle (RMPX) Refer to each tool's cutting performance list for ø8 Not recommended sinking depth per revolution when helical milling. Use compressed air during machining. ø10 1.5° ø12,ø14 2° ø16 3° ø17,ø18 1.5° ø20 BDMT0703 type 2° ø21 1.8° RMPX ø25 1.3° ø26 1.2° ø32 0.8° ø33 0.5° Guidance of minimum cutting dia. by helical milling MECX Cutting dia. ø8 ø10 ø12 ø14 ø16 ø17 ø18 ø20 Guidance of minimum cutting dia.BDMT0703by helical milling ø14 ø18 ø22 ø26 ø28 ø30 ø34Helical milling is type Guidance of minimum cutting dia.in case of flatting bottom after helical millingnot recommendedø17ø21 ø25 ø29 ø31 ø33 ø37 MECX Cutting dia. ø21 ø25 ø26 ø32 ø33 M BDMT0703 Guidance of minimum cutting dia.by helical milling ø36 ø44 ø46 ø58 ø60 type Guidance of minimum cutting dia.in case of flatting bottom after helical millingø39ø47ø49ø61 ø63 M65 Milling