
SEC-External Holders MTJN Type / MTXN Type SEC-M Type Holder - General Turning and Profiling 93° Clamp-on + Pin Lock MTJN Fig 1 WF B External / Profiling 93˚ External Holders –5˚ LH LF –6˚ HF H Figure shows right-hand (R) tool. Holder Applicable Parts Bolt Nut Dimensions (mm) C Stock Cutting Wedge Pin Shim Bolt Nut Ring Overall Cutting Insert Wrench Wrench Height Width Edge Head Length Edge Previous Height Neg. Cat. No. Fig Cat. No. Cat. Ref. R L Nm H B LF WF HF LH No. Page (For Hex (For Hex Socket) Socket) * MTJN R/L2020K16 MTJN R/L2020-33 ● ● 20 20 125 25 20 32 1 MP317S ** MTJN R/L2520M16 MTJN R/L2520-33 25 20 150 25 25 32 TN□□1604 B56 on 1 MMW30 MP320S STW323 BHA0525 4.0 CPM32N ER04 LH030 LH030 Pos. ** MTJN R/L2525M16 MTJN R/L2525-33 ● ● 25 25 150 32 25 32 1 MP320S MTJN R/L2525M22 MTJN R/L2525-43 ● ● 25 25 150 32 25 38 1 MP420 TN□□2204 B61 on MMW40 STW434 BHA0625 4.5 CPM43N ER05 LH040 LH030 MTJN R/L3225P22 MTJN R/L3225-43 ● ● 32 25 170 32 32 38 1 MP420 When using CIS standard inserts, the pin for holders marked * is MP317 and the pin for holders marked ** is MP320. 100˚ SEC-M Type Holder - General Turning and Facing C Clamp-on + Pin Lock MTXN Fig 1 110˚ WF B External / Profiling D LH 0˚ –7˚ LF R HF H Figure shows right-hand (R) tool. Holder Parts Dimensions (mm) S Cutting Applicable Bolt Nut Stock Overall Cutting Wedge Pin Shim Bolt Nut Ring Height Width Edge Head Insert Wrench Wrench Length Edge Previous Height Cat. No. Fig Cat. No. Cat. Ref. T R L Nm H B LF WF HF LH No. Page (For Hex (For Hex Socket) Socket) * MTXN R/L2020K16 MTXN R/L2020-33 ● ● 20 20 125 25 20 32 TN□□1604 B56 on 1 MMW30 MP317S STW323 BHA0525 4.0 CPM32N ER04 LH030 LH030 ** MTXN R/L2525M16 MTXN R/L2525-33 ● ● 25 25 150 32 25 32 1 MP320S V MTXN R/L2525M22 MTXN R/L2525-43 ● ● 25 25 150 32 25 38 TN□□2204 B61 on 1 MMW40 MP420 STW434 BHA0625 4.5 CPM43N ER05 LH040 LH030 When using CIS standard inserts, the pin for holders marked * is MP317 and the pin for holders marked ** is MP320. When using handed breaker inserts for facing, the holder and insert are opposite handed. 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 W 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 Special 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 GU MU EG EM SUMIBORON UZ GZ EF EG EM Continuous FE EF SUMIDIA SUMIBORON SUMIBORON Cutting T1500Z AC8015P AC8025P AC6020M AC6020M AC6030M BN7000/BNC500 AC4010K AC4010K AC5015S AC5015S AC5015S DA1000 BNC2010 BN1000 SUMIBORON GZ SUMIDIA SUMIBORON SUMIBORON General SU GU MU EF EG EM GZ EF EG EM Cutting AC8015P AC8025P AC8025P AC6030M AC6030M AC6040M BN7000/BNC500 AC4015K AC4015K AC5015S AC5015S AC5025S DA1000 BNC2020 BN2000 UX EG EM SUMIBORON GZ GZ EF EG EM SUMIDIA SUMIBORON SUMIBORON Interrupted SX MX EF 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) C31