External turning 2.5WF Standard corner-R (RE)Standard corner-R (RE) Side rake angle (°)Side rake angle (°) Inclination angle (°)Inclination angle (°) WFHF WFHF BH BH Toolholders for general purpose SN insert DSBN (External turning) 75° LH 75° 2020K-12 LF D Right-hand shown Toolholder dimensions Spare parts Availabi-lity Dimension (mm) Clamp Screw Screw Shim Spring Wrench (Torx) Wrench (hex.) Description Applicable inserts R L H B LH HF LF WF DSBN& 2020K-12 N N 20 20 20 125 17 34 0.8 -4 -7 CP-3D SB-4085TR CS-3D DS-44 SP-3D FT-15 LW-3 SN..1204 2525M-12 N N 25 25 25 150 22 When using inserts whose corner-R(RE) is greater than 1.6 mm, additional modifications to the shim are necessary in order to prevent workpiece and shim from interfering each other. Wrench (FT-15) is sold separately. PSBN (External turning) 75° LH 75° LF Right-hand shown Toolholder dimensions Spare parts Availabi-lity Dimension (mm) Lever Lock screw Punch Shim Shim pin Wrench (hex) Wrench (hex.) Description Applicable inserts R L H B LH HF LF WF PSBN& 1616H-09 N N 16 16 21 16 100 13 0.8 -4 -7 LL-1N LS-1N PC-1 LS-32 LSP-1 FH-2.5 - SN..0903 PSBN& 2020K-12 N N 20 20 27 20 125 17 0.8 -4 -7 LL-2N LS-2N PC-2 LS-42 LSP-2 - LW-3 SN..1204 2525M-12 N N 25 25 24 25 150 22 When using inserts whose corner-R(RE) is greater than 1.6 mm, additional modifications to the shim are necessary in order to prevent workpiece and shim from interfering each other. N : Standard item Recommended cutting conditions: D53 - D54 D16