SEC-Very Small Diameter Boring Bars CKB Type ■ Inserts ● KBMX Type and KBMX-T Type (For Internal Machining) Dimensions (mm) KBMX Type, KBMX-T Type (For Internal Machining) AC1030U ACZ310 Min. machining Cutting edge Offset Nose radius Length Depth of cut DMIN Min. Cat. No. diameter position machinable diameter DMIN WF3 E3 RE L CDX 10° CDX KBMX R0103-05 D F 1.0 4.00 0.20 0.05 20.5 3 WF3 3.8 KBMX R0103-20 D F 0.20 E3 20° L KBMX R01506-05 D F 0.05 RE 6.2 7.0 KBMX R01506-20 D F 1.5 4.05 0.25 0.20 23.5 6 55° KBMX R0206-05 D F 0.05 12.7 KBMX R0206-20 D F 2.0 4.05 0.25 0.20 23.5 6 KBMX R0311-05 D F 3.0 4.10 0.30 0.05 28.5 11 KBMX Type KBMX-T Type KBMX R0311-20 D F 0.20 KBMX R0411-05 D F 4.0 4.30 0.50 0.05 28.5 11 KBMX R0411-20 D F 0.20 KBMX R0420-05 D F 4.0 4.30 0.50 0.05 37.5 20 KBMX R0420-20 D F 0.20 KBMX R0511-05 D F 5.0 4.50 0.70 0.05 28.5 11 KBMX R0511-20 D F 0.20 Reduces chip curl and evacuates Type that evacuates chips towards KBMX R0520-05 D F 0.05 chips. the back. Low cutting force E KBMX R0520-20 D F 5.0 4.50 0.70 0.20 37.5 20 prevents chatter. ACZ150 Min. machining Cutting edge Offset Nose radius Length Depth of cut Cat. No. diameter position Boring Bars DMIN WF3 E3 RE L CDX KBMX R0103-05T D 1.0 4.00 0.20 0.05 20.5 3 KBMX R0103-20T D 0.20 KBMX R01506-05T D 1.5 4.05 0.25 0.05 23.5 6 KBMZ Type (For Internal Turning) KBMX R01506-20T D 0.20 KBMX R0206-05T D 0.05 DMIN Min. 2.0 4.05 0.25 23.5 6 machinable diameter KBMX R0206-20T D 0.20 5° CDX KBMX R0311-05T D 3.0 4.10 0.30 0.05 28.5 11 WF3 3.8 KBMX R0311-20T D 0.20 15° 2 RE L E3 7.0 KBMX R0411-05T D 4.0 4.30 0.50 0.05 28.5 11 6.2 KBMX R0411-20T D 0.20 CDX2 12.7 55° KBMX R0511-05T D 5.0 4.50 0.70 0.05 28.5 11 Magnified diagram of cutting edge Magnified diagram of cutting edge KBMX R0511-20T D 0.20 (ffoorrmmininmiummummacmhinaacbhleindaiabmleetedriφam4.0etmemr φ) 4.0 mm) (for minimum machinable 0.3 diameter φ5.0 mm) ● KBMZ Type (For Internal Turning) R0.25 R0.25 e Dimensions (mm) I N AC1030U ACZ310 Min. machining Cutting edge Offset Nose radius Length Depth of cut Cat. No. diameter position DMIN WF3 E3 RE L CDX CDX2 KBMG Type (For Internal Grooving) KBMZ R0411-05 D F 0.05 DMIN Min. KBMZ R0411-20 4.0 5.10 1.3 28.5 9 11 machinable diameter CDX D F 0.20 WF3 3.8 KBMZ R0511-05 D F 5.0 5.10 1.3 0.05 28.5 9 11 KBMZ R0511-20 D F 0.20 E3 CW L Cutting edge Enlarged view of cutting edge 6.2 7.0 ● KBMG Type (For Internal Grooving) Dimensions (mm) e 55° AC1030U Min. machining Cutting edge R0.25 12.7 ACZ310 diameter position Offset Width of cut Nose radius Length Depth of cut RE CW RE Cat. No. DMIN WF3 E3 CW RE L CDX KBMG R0411-05 D F 4.0 4.90 1.1 1.0 0.05 28.5 11 KBMF Type (For Face Grooving) KBMG R0411-10 D F 2.0 0.10 KBMG R0511-05 D F 1.0 0.05 DMIN Min. 5.0 5.10 1.3 28.5 11 machinable diameter RE 4.3 KBMG R0511-10 D F 2.0 0.10 WF3 3.8 CW ● KBMF Type (For Face Grooving) Dimensions (mm) E3 L Min. machining Cutting edge Maximum RE 5.3 Cat. No. ACZ150 diameter position Offset Width of cut Nose radius Length groove 6.2 7.0 DMIN WF3 E3 CW RE L depth (mm) 55° KBMF R0615-05 D 6.0 4.0 0.2 1.5 0.05 21.8 4.0 12.7 KBMF R0620-05 D 6.0 4.0 0.2 2.0 0.05 21.8 4.0 KBMF R0630-05 D 6.0 4.0 0.2 3.0 0.05 21.8 4.0 KBMX Type (SUMIDIA / For Internal Machining) DMIN Min. ● KBMX Type (SUMIDIA / For Internal Machining) Dimensions (mm) machinable diameter CDX DA2200 Min. machining Cutting edge Offset Nose radius Length Depth of cut 15° Cat. No. diameter position WF3 3.8 DMIN WF3 E3 RE L CDX E3 15° L KBMX R0311-10 D 3.0 4.1 0.3 0.1 28.5 11 RE 6.2 7.0 KBMX R0411-10 D 4.0 4.3 0.5 0.1 28.5 11 55° KBMX R0511-10 D 5.0 4.5 0.7 0.1 28.5 11 12.7 E74 ● mark: Standard stocked item (expanded product) F mark: To be replaced by new item (Please confirm stock availability)