CBN Lineup Grooving inserts GDGS Gray cast iron (with scale) Cutting edge preparation Gray cast iron (without scale) K Symbol Specification Example Nodular cast iron (without scale) F Sharp edge F Sharp edge Hard materials (Roughing) E R-honed E008 R0.08 mm honed C T Chamfered T01215 0.12 × 15° chamfered Hard materials (Finishing) N H S Chamfered and R-honed S01225 0.12 × 25° chamfered and R-honed Hard materials (Chip control) Sintered steel N - Dimension (mm) Tolerance CBN Edge preparation type No. of edges PVD - Applicable CBN & PCD Tools Insert Description CW CW toolholder CW S RE LE INSL min. max. KBN05M KBN570 E008 N G35, G36, G37, G38, GDGS 2020N-020NB 1 2 4.3 0.2 2.9 20 - 0.03 + 0.03 G39 E002 N E008 N G35, G36, G37, G38, GDGS 3020N-040NB 1 3 4.3 0.4 2.9 20 - 0.03 + 0.03 G39 E002 N 2° CW LE 2° RE INSL 0° E008 N G35, G36, G37, G38, GDGS 4020N-040NB 1 4 4.3 0.4 2.9 20 - 0.03 + 0.03 S G39 External Grooving E002 N E008 N GDGS 5020N-040NB 1 5 4.3 0.4 2.9 20 - 0.03 + 0.03 G35, G37, G38,G39 E002 N GDGS 6020N-040NB E008 1 6 4.3 0.4 2.9 20 - 0.03 + 0.03 N G35 GMN Gray cast iron (with scale) Cutting edge preparation Gray cast iron (without scale) K Symbol Specification Example Nodular cast iron (without scale) F Sharp edge F Sharp edge Hard materials (Roughing) E R-honed E008 R0.08 mm honed T Chamfered T01215 0.12 × 15° chamfered Hard materials (Finishing) O N H S Chamfered and R-honed S01225 0.12 × 25° chamfered and R-honed Hard materials (Chip control) Sintered steel - Dimension (mm) Tolerance CBN Edge preparation type No. of edges - Applicable Insert Description CW CW toolholder CW S RE LE INSL min. max. KBN510 KBN525 GMN 2 E008 1 2 4.3 0.2 2.9 20 - 0.05 + 0.05 U U LE CW±0.05 2° GMN 3 E008 1 3 4.3 0.4 2.9 20 - 0.05 + 0.05 U U 2° RE INSL GMN 4 E008 1 4 4.3 0.4 2.9 20 - 0.05 + 0.05 U U G45 S GMN 5 E008 1 5 4.3 0.4 2.9 20 - 0.05 + 0.05 U U External Grooving GMN 6 E008 1 6 4.3 0.4 2.9 20 - 0.05 + 0.05 U U N : Standard item R : Right hand only L : Left hand only U : Check availability CBN & PCD inserts are sold in 1 piece boxes. C25