Grooving WFHF HBH BH WFHF BH External grooving GH/GHU/GA type KGH (External grooving / Deep grooving) CDX CDX LH LH 35 LF α α 5° 5° KGH&2020K type KGH&2525M type KGH&3225P type Right-hand shown Toolholder dimensions Spare parts G Availabi-lity Dimension (mm) Clamp Clamp bolt Spring Washer Wrench (hex.) Description R L CDX H B LH HF HBH LF WF WF(min.)(max.) KGH& 2020K-4 N N 20 20 20 5 125 13 33.5 24.5 24.8 CGH-1& HH6X25 SP-6 W-6 LW-5 2525M-4 N N 25 25 25 150 KGH& 2020K-5 N N 20 20 20 5 125 2525M-5 N N 13 25 33.5 25 150 25 25.8 CGH-1& HH6X25 SP-6 W-6 LW-5 25 3225P-5 N N 32 32 170 KGH& 2020K-7 N N 20 20 20 7 125 13 33.5 24.5 25 CGH-2& HH6X25 SP-6 W-6 LW-5 2525M-7 N N 25 25 25 150 KGH& 2525M-10 N N 25 25 150 CGH-3& 17 25 41 25.5 26.5 HH6X25 SP-6 W-6 LW-5 3225P-10 N 32 32 170 CHG-3R CDX shows available grooving depth. WF of KGHR/L Toolholder depends on the insert‘s edge width. Clamp : CGH-○R for Right-hand Toolholder and CGH-○L for Left-hand Toolholder. Rake angle (α) after installment of GH / GHU insert GH ○○○○ - ○○ GHU ○○-○○ α Insert grades α Insert grades 0° A65, A66N, PT600M 10° TC40 TN60 TN90, TC6020°PR930 10° CR9025 KW10 Applicable inserts referencepage G49 N : Standard item R : Right hand only L : Left hand only U : Check availability G50