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| Material Number | 6820789 |
| ISO Catalog ID | SDCT1204PDERLD_OBS |
| ANSI Catalog ID | SDCT43PDER8LD_OBS |
| Grade | KCK20B |
| [LI] Insert Length | 12.7 mm |
| [LI] Insert Length | 0.5 in |
| [W] Insert Width | 12.7 mm |
| [W] Insert Width | 0.5 in |
| [S] Insert Thickness | 4.763 mm |
| [S] Insert Thickness | 0.1875 in |
| [D] Insert IC Size | 12.7 mm |
| [D] Insert IC Size | 0.5 in |
| [L10] Insert Cutting Edge Length | 12.7 mm |
| [L10] Insert Cutting Edge Length | 0.5 in |
| [BS] Corner Facet Length | 3.358 mm |
| [BS] Corner Facet Length | 0.1322 in |
| [Rε] Corner Radius | 0.8 mm |
| [Rε] Corner Radius | 0.031 in |
Grades
KCK20B
Composition: A multilayered coating with thick MTCVD TiCN-Al2O3-TiOCN layers applied over a carbide substrate specifically engineered for cast irons.
Application: Delivers consistent performance in high-speed machining of grey and ductile irons. The substrate design permits the insert to stay in the cut for a long time at high speeds with minimum deformation. The thick CVD coating and post-coat treatment provide superior wear resistance ensuring long and consistent tool life. Can be applied both in straight and lightly interrupted cuts.
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After creating a solution just choose the Feeds & Speeds icon and our system will provide recommendations. You can customize the information by adding your machine and specifications or make adjustments using the sliders.
| KSSM™ 12 • Recommended Starting Feeds [mm/th] | |||||||||||||||
| Insert Geometry | Recommended Starting Feed per Tooth (Fz) in Relation to % of Radial Engagement (ae) | ||||||||||||||
| 5% | 10% | 20% | 30% | 40–100% | |||||||||||
| L | M | H | L | M | H | L | M | H | L | M | H | L | M | H | |
| .F..LE | 0,12 | 0,42 | 0,74 | 0,08 | 0,30 | 0,54 | 0,06 | 0,23 | 0,40 | 0,06 | 0,20 | 0,35 | 0,05 | 0,18 | 0,32 |
| .E..LD2 | 0,12 | 0,46 | 0,81 | 0,09 | 0,33 | 0,58 | 0,07 | 0,25 | 0,43 | 0,06 | 0,22 | 0,38 | 0,05 | 0,20 | 0,35 |
| .E..GB2 | 0,23 | 0,53 | 0,89 | 0,17 | 0,38 | 0,64 | 0,13 | 0,29 | 0,48 | 0,11 | 0,25 | 0,41 | 0,10 | 0,23 | 0,38 |
| .S..GB2 | 0,23 | 0,59 | 0,95 | 0,17 | 0,43 | 0,68 | 0,13 | 0,32 | 0,51 | 0,11 | 0,28 | 0,44 | 0,10 | 0,25 | 0,41 |
| .S..GN | 0,23 | 0,59 | 0,95 | 0,17 | 0,43 | 0,68 | 0,13 | 0,32 | 0,51 | 0,11 | 0,28 | 0,44 | 0,10 | 0,25 | 0,41 |
| L = Light Machining; M = Medium Machining; H = Heavy Machining NOTE: Use Light Machining values as starting feed rate. | |||||||||||||||
| KSSM™ 12 • Recommended Starting Feeds [IPT] | |||||||||||||||
| Insert Geometry | Recommended Starting Feed per Tooth (Fz) in Relation to % of Radial Engagement (ae) | ||||||||||||||
| 5% | 10% | 20% | 30% | 40–100% | |||||||||||
| L | M | H | L | M | H | L | M | H | L | M | H | L | M | H | |
| .F..LE | 0.005 | 0.017 | 0.030 | 0.003 | 0.012 | 0.021 | 0.003 | 0.009 | 0.016 | 0.002 | 0.008 | 0.014 | 0.002 | 0.007 | 0.013 |
| .E..LD2 | 0.005 | 0.018 | 0.032 | 0.004 | 0.013 | 0.023 | 0.003 | 0.010 | 0.017 | 0.002 | 0.009 | 0.015 | 0.002 | 0.008 | 0.014 |
| .E..GB2 | 0.009 | 0.021 | 0.035 | 0.007 | 0.015 | 0.025 | 0.005 | 0.011 | 0.019 | 0.004 | 0.010 | 0.016 | 0.004 | 0.009 | 0.015 |
| .S..GB2 | 0.009 | 0.023 | 0.037 | 0.007 | 0.017 | 0.027 | 0.005 | 0.013 | 0.020 | 0.004 | 0.011 | 0.017 | 0.004 | 0.010 | 0.016 |
| .S..GN | 0.009 | 0.023 | 0.037 | 0.007 | 0.017 | 0.027 | 0.005 | 0.013 | 0.020 | 0.004 | 0.011 | 0.017 | 0.004 | 0.010 | 0.016 |
| L = Light Machining; M = Medium Machining; H = Heavy Machining NOTE: Use Light Machining values as starting feed rate. | |||||||||||||||
| KSSM™ 12 • Recommended Starting Speed [m/min] | |||||||||||||||||||||||||||||||
| Grade | KCPM20 | KC410M | KC725M | KCK15 | KCPK30 | KCK20B | KCPM40 | KCSM40 | KTPK20 | KY3500 | |||||||||||||||||||||
| Chip Thickness hex mm | Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | |||||||||||
| Material Group | Max | Start | Min | Max | Start | Min | Max | Start | Min | Max | Start | Min | Max | Start | Min | Max | Start | Min | Max | Start | Min | Max | Start | Min | Max | Start | Min | Max | Start | Min | |
| P | 1 | 550 | 485 | 450 | – | – | – | 260 | 230 | 215 | – | – | – | 455 | 395 | 370 | – | – | – | 295 | 260 | 245 | 350 | 320 | 300 | 365 | 300 | 255 | – | – | – |
| 2 | 340 | 310 | 275 | – | – | – | 220 | 190 | 160 | – | – | – | 280 | 255 | 230 | – | – | – | 250 | 215 | 180 | 300 | 270 | 220 | 265 | 220 | 200 | – | – | – | |
| 3 | 310 | 275 | 255 | – | – | – | 200 | 170 | 140 | – | – | – | 255 | 230 | 205 | – | – | – | 230 | 195 | 160 | 280 | 240 | 195 | 245 | 200 | 180 | – | – | – | |
| 4 | 230 | 215 | 190 | – | – | – | 180 | 150 | 120 | – | – | – | 225 | 185 | 160 | – | – | – | 205 | 170 | 135 | 240 | 205 | 165 | 210 | 180 | 160 | – | – | – | |
| 5 | 275 | 250 | 230 | – | – | – | 150 | 135 | 120 | – | – | – | 190 | 170 | 150 | – | – | – | 170 | 155 | 135 | 200 | 180 | 160 | 185 | 170 | 150 | – | – | – | |
| 6 | 190 | 170 | 145 | – | – | – | 130 | 100 | 80 | – | – | – | 160 | 135 | 110 | – | – | – | 150 | 115 | 90 | 180 | 140 | 100 | 160 | 130 | 100 | – | – | – | |
| M | 1 | 225 | 200 | 175 | – | – | – | 170 | 150 | 135 | – | – | – | 205 | 185 | 155 | – | – | – | 195 | 170 | 155 | 260 | 210 | 185 | 240 | 195 | 165 | – | – | – |
| 2 | 205 | 175 | 160 | – | – | – | 155 | 130 | 110 | – | – | – | 185 | 160 | 140 | – | – | – | 175 | 150 | 125 | 235 | 180 | 145 | 215 | 185 | 150 | – | – | – | |
| 3 | 160 | 145 | 125 | – | – | – | 115 | 100 | 80 | – | – | – | 145 | 130 | 115 | – | – | – | 130 | 115 | 90 | 175 | 145 | 110 | 160 | 135 | 110 | – | – | – | |
| K | 1 | 360 | 325 | 295 | – | – | – | – | – | – | 420 | 385 | 340 | 295 | 265 | 240 | 360 | 290 | 245 | – | – | – | – | – | – | 230 | 195 | 160 | 805 | 730 | 650 |
| 2 | 285 | 255 | 235 | – | – | – | – | – | – | 335 | 295 | 275 | 235 | 210 | 190 | 280 | 230 | 195 | – | – | – | – | – | – | 185 | 150 | 130 | 635 | 570 | 530 | |
| 3 | 240 | 215 | 200 | – | – | – | – | – | – | 280 | 250 | 230 | 195 | 175 | 160 | 210 | 175 | 140 | – | – | – | – | – | – | 150 | 130 | 105 | 535 | 475 | 435 | |
| N | 1 | – | – | – | 1215 | 1080 | 995 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| 2 | – | – | – | 1080 | 995 | 915 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
| 3 | – | – | – | 1080 | 995 | 915 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
| S | 1 | – | – | – | – | – | – | 35 | 30 | 25 | – | – | – | – | – | – | – | – | – | 40 | 35 | 30 | 50 | 40 | 25 | – | – | – | – | – | – |
| 2 | – | – | – | – | – | – | 35 | 30 | 25 | – | – | – | – | – | – | – | – | – | 40 | 35 | 30 | 55 | 40 | 25 | – | – | – | – | – | – | |
| 3 | – | – | – | – | – | – | 45 | 35 | 25 | – | – | – | – | – | – | – | – | – | 50 | 40 | 30 | 65 | 45 | 30 | – | – | – | – | – | – | |
| 4 | – | – | – | – | – | – | 50 | 45 | 30 | – | – | – | 50 | 45 | 35 | – | – | – | 55 | 50 | 35 | 75 | 60 | 40 | – | – | – | – | – | – | |
| H | 1 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| As the average chip thickness increases, speed should be decreased. Material groups P, M, K and H show recommended starting speeds for dry machining. For wet machining, reduce speed by 20%. Material groups N and S show recommended starting speeds for wet machining. Not recommended for dry machining. | |||||||||||||||||||||||||||||||
| KSSM™ 12 • Recommended Starting Speed [SFM] | |||||||||||||||||||||||||||||||
| Grade | KCPM20 | KC410M | KC725M | KCK15 | KCPK30 | KCK20B | KCPM40 | KCSM40 | KTPK20 | KY3500 | |||||||||||||||||||||
| Chip Thickness hex Inch | Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | |||||||||||
| Material Group | Max | Start | Min | Max | Start | Min | Max | Start | Min | Max | Start | Min | Max | Start | Min | Max | Start | Min | Max | Start | Min | Max | Start | Min | Max | Start | Min | Max | Start | Min | |
| P | 1 | 550 | 485 | 450 | – | – | – | 855 | 755 | 705 | – | – | – | 1495 | 1295 | 1215 | – | – | – | 970 | 855 | 805 | 1150 | 1050 | 985 | 1200 | 985 | 835 | – | – | – |
| 2 | 340 | 310 | 275 | – | – | – | 720 | 625 | 525 | – | – | – | 920 | 835 | 755 | – | – | – | 820 | 705 | 590 | 985 | 885 | 720 | 870 | 720 | 655 | – | – | – | |
| 3 | 310 | 275 | 255 | – | – | – | 655 | 560 | 460 | – | – | – | 835 | 755 | 675 | – | – | – | 755 | 640 | 525 | 920 | 785 | 640 | 805 | 655 | 590 | – | – | – | |
| 4 | 230 | 215 | 190 | – | – | – | 590 | 490 | 395 | – | – | – | 740 | 605 | 525 | – | – | – | 675 | 560 | 445 | 785 | 675 | 540 | 690 | 590 | 525 | – | – | – | |
| 5 | 275 | 250 | 230 | – | – | – | 490 | 445 | 395 | – | – | – | 625 | 560 | 490 | – | – | – | 560 | 510 | 445 | 655 | 590 | 525 | 605 | 560 | 490 | – | – | – | |
| 6 | 190 | 170 | 145 | – | – | – | 425 | 330 | 260 | – | – | – | 525 | 445 | 360 | – | – | – | 490 | 375 | 295 | 590 | 460 | 330 | 525 | 425 | 330 | – | – | – | |
| M | 1 | 225 | 200 | 175 | – | – | – | 560 | 490 | 445 | – | – | – | 675 | 605 | 510 | – | – | – | 640 | 560 | 510 | 855 | 690 | 605 | 785 | 640 | 540 | – | – | – |
| 2 | 205 | 175 | 160 | – | – | – | 510 | 425 | 360 | – | – | – | 605 | 525 | 460 | – | – | – | 575 | 490 | 410 | 770 | 590 | 475 | 705 | 605 | 490 | – | – | – | |
| 3 | 160 | 145 | 125 | – | – | – | 375 | 330 | 260 | – | – | – | 475 | 425 | 375 | – | – | – | 425 | 375 | 295 | 575 | 475 | 360 | 525 | 445 | 360 | – | – | – | |
| K | 1 | 360 | 325 | 295 | – | – | – | – | – | – | 1380 | 1265 | 1115 | 970 | 870 | 785 | 1180 | 950 | 805 | – | – | – | – | – | – | 755 | 640 | 525 | 2640 | 2395 | 2135 |
| 2 | 285 | 255 | 235 | – | – | – | – | – | – | 1100 | 970 | 900 | 770 | 690 | 625 | 920 | 755 | 640 | – | – | – | – | – | – | 605 | 490 | 425 | 2085 | 1870 | 1740 | |
| 3 | 240 | 215 | 200 | – | – | – | – | – | – | 920 | 820 | 755 | 640 | 575 | 525 | 690 | 575 | 460 | – | – | – | – | – | – | 490 | 425 | 345 | 1755 | 1560 | 1425 | |
| N | 1 | – | – | – | 3985 | 3545 | 3265 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| 2 | – | – | – | 3545 | 3265 | 3000 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
| 3 | – | – | – | 3545 | 3265 | 3000 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
| S | 1 | – | – | – | – | – | – | 115 | 100 | 80 | – | – | – | – | – | – | – | – | – | 130 | 115 | 100 | 165 | 130 | 80 | – | – | – | – | – | – |
| 2 | – | – | – | – | – | – | 115 | 100 | 80 | – | – | – | – | – | – | – | – | – | 130 | 115 | 100 | 180 | 130 | 80 | – | – | – | – | – | – | |
| 3 | – | – | – | – | – | – | 150 | 115 | 80 | – | – | – | – | – | – | – | – | – | 165 | 130 | 100 | 215 | 150 | 100 | – | – | – | – | – | – | |
| 4 | – | – | – | – | – | – | 165 | 150 | 100 | – | – | – | 165 | 150 | 115 | – | – | – | 180 | 165 | 115 | 245 | 195 | 130 | – | – | – | – | – | – | |
| H | 1 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| As the average chip thickness increases, speed should be decreased. Material groups P, M, K and H show recommended starting speeds for dry machining. For wet machining, reduce speed by 20%. Material groups N and S show recommended starting speeds for wet machining. Not recommended for dry machining. | |||||||||||||||||||||||||||||||
| KSSM™ 12 • Insert Selection Guide | ||||||
| Material Group | Light | General | Heavy | |||
| – | (Light geometry) | – | (Strong geometry) | |||
| – | wear |  | toughness | |||
| – | Geometry | Grade | Geometry | Grade | Geometry | Grade |
| P1–P2 | .E..LD2 | KCPM40 | .E..GB2 | KCPM40 | .S..GB2 | KCPM40 |
| P3–P4 | .E..LD2 | KCPM40 | .E..GB2 | KCPK30 | .S..GB2 | KCPK30 |
| P5–P6 | .E..LD2 | KC725M | .E..GB2 | KC725M | .S..GB2 | KC725M |
| M1–M2 | .E..LD2 | KCSM40 | .E..GB2 | KCSM40 | .S..GB2 | KCSM40 |
| M3 | .E..LD2 | KCPM40 | .E..GB2 | KCPM40 | .S..GB2 | KCPM40 |
| K1–K2 | .E..LD2 | KCK20B | .E..GB2 | KCK15 | .S..GN | KY3500 |
| K3 | .E..LD2 | KCK20B | .E..GB2 | KCK20B | .S..GB2 | KCK20B |
| N1–N2 | .F..LE | KC410M | .F..LE | KC410M | .F..LE | KC410M |
| N3 | .F..LE | KC410M | .F..LE | KC410M | .F..LE | KC410M |
| S1–S2 | .E..LD2 | KC725M | .E..GB2 | KC725M | .S..GB2 | KC725M |
| S3 | .E..LD2 | KCSM40 | .E..GB2 | KCSM40 | .S..GB2 | KCSM40 |
| S4 | .E..LD2 | KCSM40 | .E..GB2 | KCSM40 | .S..GB2 | KCSM40 |
| H1 | – | – | – | – | – | – |
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