
SEC-External Holders DTGN Type / DTFN Type SEC-D Type Holder - General Turning and Profiling 91˚ Double Clamp DTGN Fig 1 External Turning WF B External Holders –5˚ 91˚ LH LF –5˚ HF C H Figure shows right-hand (R) tool. Holder Parts Dimensions (mm) Cutting Clamp Shim Shim Upper Surface Lower Surface Neg. Stock Overall Cutting Applicable Insert Shim Height Width Edge Head Set Screw Wrench Wrench Wrench Length Edge Height Cat. No. Fig Ref. R L Cat. No. Nm H B LF WF HF LH Page (For Torx Holes) (For Hex Socket) (For Hex Socket) Pos. DTGN R/L2020K16 ● ● 20 20 125 25 20 31 B56 1 TN□□1604 on SCP-1 5.0 TNS1604 BFTX0307N TRX10(*) LH040 LH025 DTGN R/L2525M16 ● ● 25 25 150 32 25 31 1 *Wrench for shim is sold separately from the main body. Clamp Set Parts C44 91° SEC-D Type Holder - Facing C Double Clamp DTFN Fig 1 D Facing 91˚ WF B LH –5˚ LF R –5˚ HF H Figure shows right-hand (R) tool. S Holder Parts Dimensions (mm) Cutting Clamp Shim Shim Upper Surface Lower Surface Stock Overall Cutting Applicable Insert Shim Height Width Edge Head Set Screw Wrench Wrench Wrench Length Edge T Height Cat. No. Fig Ref. R L Cat. No. Nm H B LF WF HF LH Page (For Torx Holes) (For Hex Socket) (For Hex Socket) DTFN R/L2020K16 ● ● 20 20 125 25 20 30 B56 1 TN□□1604 on SCP-1 5.0 TNS1604 BFTX0307N TRX10(*) LH040 LH025 V DTFN R/L2525M16 ● ● 25 25 150 32 25 30 1 *Wrench for shim is sold separately from the main body. Clamp Set Parts C44 When using handed breaker inserts for facing, the holder and insert are opposite handed. W Applicable Inserts DTGN Type/DTFN Type/PTGN Type/PTTN Type/PTFN Type/ETGN Type/ETAN Type/ETFN Type/ETEN Type/ETXN Type/MTJN Type/MTXN Type Special Name of ● Refer as well to the Insert Selection Guide (page A10 on). Chipbreaker / GU Legend 1st Recommended Insert CBN / PCD Photo ● Some combinations need to be made to order or cannot be manufactured. Grade AC8025P Cutting Range P (Steel) M (Stainless Steel) K (Cast Iron) S (Exotic Alloy) N (Non-ferrous) H (Hardened Steel) Process Finishing Medium Cutting Roughing Finishing Medium Cutting Roughing High-speed Finishing Finishing to Medium Cutting Medium to Roughing Finishing Medium Cutting Roughing Q Coated Uncoated Continuous FE GU MU EF EG EM SUMIBORON UZ GZ EF EG EM SUMIDIA SUMIBORON SUMIBORON Cutting T1500Z AC8015P AC8025P AC6020M AC6020M AC6030M BN7000/BNC500 AC4010K AC4010K AC5015S AC5015S AC5015S DA1000 BNC2010 BN1000 General SU GU MU EF EG EM SUMIBORON GZ GZ EF EG EM SUMIDIA SUMIBORON SUMIBORON Cutting AC8015P AC8025P AC8025P AC6030M AC6030M AC6040M BN7000/BNC500 AC4015K AC4015K AC5015S AC5015S AC5025S DA1000 BNC2020 BN2000 Interrupted SX UX MX EF EG EM SUMIBORON GZ GZ EF EG EM SUMIDIA SUMIBORON SUMIBORON Cutting AC8025P AC8035P AC8035P AC6030M AC6040M AC6040M BN7000/BNC500 AC420K AC420K AC5025S AC5025S AC5025S DA1000 BNC300 BN350 Recommended Cutting Conditions A10 on A14 on A16 on A18 on A22 on A20 on BNC500 is for ductile cast iron. N m Recommended Tightening Torque (N·m) C25