Cut-off / General purposeGrooving and cut-off / High feed rate CW±0.03CW±0.03CW±0.03 3°3°3°3° SS3°3°SCW±0.033°3°CW±0.03SSCW±0.03S No. of edges PR1215 PR1225 PR1535 Cut-Off KGD type GDM/GDMS/GDG type GDM/GDMS/GDG Carbon steel / Alloy steel P Q P P Stainless steel P P Q M Cast iron K Non-ferrous metals N Dimension (mm) Angle(°) Tolerance Carbide PVD Insert Description CW S RE INSL PSIRR CW min. CWmax. Applicable toolholder GDM 2020N-020PM 2 2 0.2 20 - 0.03 + 0.03 N N N RE GDM 2520N-020PM 2 2.5 0.2 20 - 0.03 + 0.03 N N N INSL RE 4.3 GDM 3020N-025PM 2 3 0.25 20 - 0.03 + 0.03 N N N General purpose GDM 4020N-030PM 2 4 0.3 20 - 0.03 + 0.03 N N N GDM 2020R-020PM-6D 2 2 0.2 20 - 0.03 + 0.03 N N N H PSIRR INSL RE GDM 2520R-020PM-6D 2 2.5 4.3 0.2 20 6 - 0.03 + 0.03 N N N General purpose GDM 3020R-025PM-6D 2 3 0.25 20 - 0.03 + 0.03 N N N GDMS 2020N-020PM 1 2 0.2 20 - 0.03 + 0.03 N N N INSL RE GDMS 3020N-025PM 1 3 4.3 0.25 20 - - 0.03 + 0.03 N N N General purpose GDMS 4020N-030PM 1 4 0.3 20 - 0.03 + 0.03 N N N H22, H23, H25, H26 GDMS 2020R-020PM-6D 1 2 0.2 20 - 0.03 + 0.03 N N N PSIRR INSL RE GDMS 3020R-025PM-6D 1 3 4.3 0.25 20 6 - 0.03 + 0.03 N N N General purpose GDMS 4020R-030PM-6D 1 4 0.3 20 - 0.03 + 0.03 N N N GDM 2020N-020PH 2 2 0.2 20 - 0.03 + 0.03 N N N 1.5° RE 1.5° INSL RE GDM 3020N-030PH 2 3 4.3 0.3 20 - - 0.03 + 0.03 N N N High feed GDM 4020N-030PH 2 4 0.3 20 - 0.03 + 0.03 N N N GDMS 2020N-020PH 1 2 0.2 20 - 0.03 + 0.03 N N N 1.5° INSL 1.5° GDMS 3020N-030PH 1 3 4.3 0.3 20 - - 0.03 + 0.03 N N N 1-edge / High feed GDMS 4020N-030PH 1 4 0.3 20 - 0.03 + 0.03 N N N Using the PF / PM chipbreaker (for cut-off ) for grooving cannot create a flat bottom (Ref. to the right figure). Groove bottom created by PF / PM chipbreaker N : Standard item R : Right hand only L : Left hand only U : Check availability H21 RE