Small Dia. Face Grooving (Twin-Bars) TWFG (Horizontal type) Face Grooving Dia. Insert Grades φA Dimension (mm) Angle PVD Coated Carbide Description Carbide rH PR1025 KW10 T MIN. MAX. W rε B IA ±0.03 W 6.5 θ T rH 5° B TWFGL 050 0.5 1.0 1.5° ● ● 3 080 0.8 1.5 ● ● 16 100 6 ∞ 1.0 ● ● 25° 125 1.25 0.05 2.2 ● ● 2.38 150 (0) (∞) 1.5 2° ● ● Left-hand shown 180 1.8 3.0 ● ● 200 2.0 ● ● · Dimension B shows available grooving depth. · Face grooving diameter φA MIN. (0) means that you can make the initial groove within MIN. ~ MAX. and then widen it to the center. STW (Square Shank for Horizontal type) (For right-hand toolholder for boring, ref. to page F34.) T T B F1 G B F1 L1 Fig.1 L1 L3 Fig.2 H1 h H1 h Left-hand shown Grooving Toolholder Dimensions Dimension (mm) Spare Parts Std. Drawing Clamp Screw Wrench Applicable Inserts Description H1=h B L1 L2 L3 F1 F2 T F3 G72 External Internal STWL 1010F-15 ● 10 10 85 10 1212F-15 ● 12 12 - 12 Fig.1 Face 1212K-15 ● 12 12 - 12 - 3 - SB-3080TR LTW-10S TWFGL 1616K-15 ● 16 16 125 16 2020K-15 ● 20 20 25 25 Fig.2 2525M-15 ● 25 25 150 32 · Dimension T shows the distance from the toolholder to the cutting edge. Available groove depth: "B" dimension of insert. S..-STW (Round Shank for Horizontal type) (For right-hand toolholder for boring, ref. to page F34.) L3 T ID1 T ID1 ID2 ID2 1 1 H L2 Offset length from the center of H L2 Offset length from the center of L1 toolholder to the tip of edge L1 toolholder to the tip of edge Left-hand shown Fig.1 Fig.2 Toolholder Dimensions Dimension (mm) Spare Parts Std. Drawing Clamp Screw Wrench Applicable Inserts Description φD1 φD2 H L1 L2 L3 T G72 S12F- STWL15 ● 12 11 80 S14H- STWL15 ● 14 20 13 100 22 3 Fig.1 S15F- STWL15 ● 15.875 15 85 S16F- STWL15 ● 16 18 S19G- STWL15 ● 19.05 18.5 17 90 S19K- STWL15 ● 120 SB-3080TR LTW-10S TWFGL S20G- STWL15 ● 20 19.5 18 90 S20K- STWL15 ● 120 - 3 Fig.2 S22K- STWL15 ● 22 21.5 20 125 S25.0J- STWL15 ● 25 24.5 23 110 22 S25K- STWL15 ● 25.4 25 23 120 · Dimension T shows the distance from the toolholder to the cutting edge. Available groove depth: "B" dimension of insert. Twin-Bars are : Std. Item G72 sold in 5 piece boxes.