2°2°2°2°S CWS CW±0.05 Edge preparation typeEdge preparation type No. of edgesNo. of edges PVDKBN05MKBN510 KBN570KBN525 CBN & PCD Tools CBN Lineup Grooving inserts GDGS Gray cast iron (with scale) Cutting edge preparation Gray cast iron (without scale) K Symbol Speci cation 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) N HSChamfered and R-honedS012250.12 × 25° chamfered and R-honedHard materials (Chip control)C Sintered steel N - Dimension (mm) Tolerance CBN Insert Description - ApplicableCWSRELEINSLCWmin.CWmax.toolholder GDGS 2020N-020NB E008 1 2E0024.3 0.2 2.9 N20- 0.03+ 0.03G35, G36, G37, G38,G39N GDGS 3020N-040NB E008 1 3E0024.3 0.4 2.9 N20- 0.03+ 0.03G35, G36, G37, G38,G39N LEINSL RE0° GDGS 4020N-040NBExternal Grooving E008 1 4E0024.3 0.4 2.9 N20- 0.03+ 0.03G35, G36, G37, G38,G39N 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 Speci cation 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 Insert Description - ApplicableCWSRELEINSLCWmin.CWmax.toolholder GMN 2 E008 1 2 4.3 0.2 2.9 20 - 0.05 + 0.05 U U LE GMN 3 E008 1 3 4.3 0.4 2.9 20 - 0.05 + 0.05 U U INSL RE GMN 4 E008 1 4 4.3 0.4 2.9 20 - 0.05 + 0.05 U U G45 External Grooving GMN 5 E008 1 5 4.3 0.4 2.9 20 - 0.05 + 0.05 U U 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