External Deep Grooving Toolholders [GH / GHU / GA Insert] Top Clamp  KGH T T F1 B F1 B A L2 A L2 35 L1 D H3 D H3 h 5° H2 H1 h 5° H1 KGH&2020K type KGH&2525M type • Right-hand shown KGH&3225P type  KGHS B F1 B F1 T T G L2 L2 L1 H3 h A H2 H1 h A H1 Grooving KGHS&2020K type KGHS&2525M type • Right-hand shown  Toolholder Dimensions External Std. Dimension (mm) Spare Parts Clamp Clamp Bolt Washer Spring Wrench Internal Description RL H1=h H2 H3 B L1 L2 F1 A T Face KGH & 2020K-4  20 5 15.6 20 125 33.5 24.5-24.8 3.4 13 CGH-1 & 2525M-4  25 - 25 150 24.5-24.8 2020K-5  20 5 20 125 25.0-25.8 2525M-5  25 - 15.6 25 150 33.5 25.0-25.8 4.2 13 CGH-1 & 3225P-5  32 - 25 170 25.0-25.8 HH6X25 W-6 SP-6 LW-5 2020K-7  20 5 15.6 20 125 33.5 24.5-25.0 5.8 13 CGH-2 & 2525M-7  25 - 25 150 24.5-25.0 2525M-10  25 - 16.1 25 150 41 25.5-26.5 9.0 17 CGH-3 & 3225P -10  32 - 25 170 25.5-26.5 KGHS & 2020K-4  20 5 15.6 20 125 25 35 3.4 13 CGH-1L/R 2525M-4  25 - 25 150 40 HH6X25 W-6 SP-6 LW-5 2020K-5  20 5 15.6 20 125 25 35 4.2 13 CGH-1 L/R 2525M-5  25 - 25 150 40 · Dimension T shows available grooving depth. · Dimension F1 of KGH & Toolholder depends on the insert's edge width. · ClampKGH & ... CGH-R for Right-hand Toolholder, and CGH-L for Left-hand Toolholder. KGHS & ... CGH-L for Right-hand Toolholder, and CGH-R for Left-hand Toolholder.  Rake Angle (α) after Installment of GH / GHU When using GH- When using GHU- α Insert Grades α Insert Grades 0° A65, A66N, PT600M 10° TC40N TN60 TN90, TC60M 10° CR9025 20° PR930 KW10  : Std. Item G38