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| Material Number | 6524738 |
| ISO Catalog ID | KT4D400Z11S125LN12L200 |
| ANSI Catalog ID | KT4D400Z11S125LN12L200 |
| [D1] Effective Cutting Diameter | 101.6 mm |
| [D1] Effective Cutting Diameter | 4 in |
| [D] Adapter / Shank / Bore Diameter | 31.75 mm |
| [D] Adapter / Shank / Bore Diameter | 1.25 in |
| [D6] Hub Diameter | 73.025 mm |
| [D6] Hub Diameter | 2.875 in |
| [L] Overall Length | 50.8 mm |
| [L] Overall Length | 2 in |
| [AP1MAX] 1st Maximum Cutting Depth | 12.144 mm |
| [AP1MAX] 1st Maximum Cutting Depth | .4781 in |
| Number of Inserts | 11 |
| Weight Pounds | 3.9 |
| Max RPM | 16500 |
Create Solution to calculate Feeds and Speeds
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.
| Mill 4-12KT™ • Insert Selection Guide | ||||||
| Material Group | Light | General | Heavy | |||
| – | (Light geometry) | – | (Strong geometry) | |||
| – | wear |  | toughness | |||
| – | Geometry | Grade | Geometry | Grade | Geometry | Grade |
| P1-P2 | .E..GE | KC522M | .E..PU | KCPM40 | .E..HD | KCPM40 |
| P3-P4 | .E..GE | KC522M | .E..PU | KCPM40 | .E..HD | KCPM40 |
| P5-P6 | .E..GE | KC522M | .E..PU | KC725M | .E..HD | KCPK30 |
| M1-M2 | .E..GE | KC522M | .E..PU | KCSM40 | .E..HD | KCPM40 |
| M3 | .E..GE | KC522M | .E..GE | KCSM40 | .E..HD | KCPM40 |
| K1-K2 | .E..GE | KCK15 | .E..PU | KCK20B | .E..HD | KCK15 |
| K3 | .E..GE | KCK20B | .E..PU | KCK20B | .E..HD | KCK20B |
| N1-N2 | – | – | – | – | – | – |
| N3 | – | – | – | – | – | – |
| S1-S2 | .E..GE | KC522M | .E..PU | KCSM40 | – | – |
| S3 | .E..GE | KC522M | .E..GE | KCSM40 | – | – |
| S4 | .E..GE | KC522M | .E..GE | KCSM40 | – | – |
| H1 | – | – | – | – | – | – |
| Mill 4-12KT™ • Recommended Starting Feeds [mm/th] | |||||||||||||||
| Insert Geometry | Recommended Starting Feed per Tooth (Fz) in Relation to % of Radial Engagement (ae) | ||||||||||||||
| 10% | 20% | 30% | 40% | 50–100% | |||||||||||
| L | M | H | L | M | H | L | M | H | L | M | H | L | M | H | |
| .E..GE | 0,12 | 0,33 | 0,09 | 0,25 | 0,08 | 0,22 | 0,07 | 0,2 | 0,07 | 0,2 | |||||
| .E..PU | 0,12 | 0,35 | 0,45 | 0,09 | 0,3 | 0,4 | 0,08 | 0,25 | 0,35 | 0,07 | 0,2 | 0,33 | 0,07 | 0,2 | 0,3 |
| .E..HD | 0,12 | 0,35 | 0,55 | 0,09 | 0,3 | 0,44 | 0,08 | 0,25 | 0,38 | 0,07 | 0,2 | 0,36 | 0,07 | 0,2 | 0,35 |
| L = Light Machining; M = Medium Machining; H = Heavy Machining NOTE: Use Light Machining values as starting feed rate. | |||||||||||||||
| Mill 4-12KT™ • Recommended Starting Feeds [IPT] | |||||||||||||||
| Insert Geometry | Recommended Starting Feed per Tooth (Fz) in Relation to % of Radial Engagement (ae) | ||||||||||||||
| 10% | 20% | 30% | 40% | 50–100% | |||||||||||
| L | M | H | L | M | H | L | M | H | L | M | H | L | M | H | |
| .E..GE | 0.005 | 0.013 | 0.004 | 0.01 | 0.003 | 0.009 | 0.003 | 0.008 | 0.003 | 0.008 | |||||
| .E..PU | 0.005 | 0.014 | 0.018 | 0.004 | 0.012 | 0.016 | 0.003 | 0.01 | 0.014 | 0.003 | 0.008 | 0.013 | 0.003 | 0.008 | 0.012 |
| .E..HD | 0.005 | 0.014 | 0.022 | 0.004 | 0.012 | 0.017 | 0.003 | 0.01 | 0.015 | 0.003 | 0.008 | 0.014 | 0.003 | 0.008 | 0.014 |
| L = Light Machining; M = Medium Machining; H = Heavy Machining NOTE: Use Light Machining values as starting feed rate. | |||||||||||||||
| Mill 4™-12KT • Recommended Starting Speeds [m/min] | ||||||||||||||||||||||
| Grade | KC522M | KCK15 | KCK20B | KCPK30 | KCPM40 | KCSM40 | KC725M | |||||||||||||||
| Chip Thickness hex mm | 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 | |
| P | 1 | 1085 | 935 | 885 | – | – | – | – | – | – | 1495 | 1295 | 1215 | 970 | 855 | 805 | 1150 | 1050 | 985 | 855 | 755 | 705 |
| 2 | 900 | 785 | 655 | – | – | – | – | – | – | 920 | 835 | 755 | 820 | 705 | 590 | 985 | 885 | 720 | 720 | 625 | 525 | |
| 3 | 835 | 705 | 575 | – | – | – | – | – | – | 835 | 755 | 675 | 755 | 640 | 525 | 920 | 785 | 640 | 655 | 560 | 460 | |
| 4 | 740 | 605 | 490 | – | – | – | – | – | – | 625 | 575 | 525 | 675 | 560 | 445 | 785 | 675 | 540 | 590 | 490 | 395 | |
| 5 | 605 | 560 | 490 | – | – | – | – | – | – | 855 | 755 | 690 | 560 | 510 | 445 | 655 | 590 | 525 | 490 | 445 | 395 | |
| 6 | 540 | 410 | 330 | – | – | – | – | – | – | 525 | 445 | 360 | 490 | 375 | 295 | 590 | 460 | 330 | 425 | 330 | 260 | |
| M | 1 | 675 | 590 | 540 | – | – | – | – | – | – | 675 | 605 | 510 | 640 | 560 | 510 | 855 | 625 | 375 | 560 | 490 | 445 |
| 2 | 605 | 525 | 425 | – | – | – | – | – | – | 605 | 525 | 460 | 575 | 490 | 410 | 755 | 560 | 345 | 510 | 425 | 360 | |
| 3 | 460 | 395 | 310 | – | – | – | – | – | – | 475 | 425 | 375 | 425 | 375 | 295 | 625 | 460 | 280 | 375 | 330 | 260 | |
| K | 1 | 755 | 675 | 605 | 1380 | 1250 | 1115 | 1180 | 950 | 8 | 970 | 870 | 785 | – | – | – | – | – | – | – | – | – |
| 2 | 590 | 525 | 490 | 1100 | 970 | 900 | 920 | 755 | 640 | 770 | 690 | 625 | – | – | – | – | – | – | – | – | – | |
| 3 | 490 | 445 | 395 | 920 | 820 | 755 | 690 | 575 | 525 | 640 | 575 | 525 | – | – | – | – | – | – | – | – | – | |
| N | 1 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| 2 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
| 3 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
| S | 1 | 130 | 115 | 80 | – | – | – | – | – | – | – | – | – | 130 | 115 | 100 | 195 | 150 | 80 | 115 | 100 | 80 |
| 2 | 130 | 115 | 80 | – | – | – | – | – | – | – | – | – | 130 | 115 | 100 | 180 | 130 | 80 | 115 | 100 | 80 | |
| 3 | 165 | 130 | 80 | – | – | – | – | – | – | – | – | – | 165 | 130 | 95 | 215 | 150 | 100 | 150 | 115 | 80 | |
| 4 | 165 | 150 | 115 | – | – | – | – | – | – | – | – | – | 180 | 165 | 115 | 245 | 195 | 130 | 165 | 150 | 100 | |
| H | 1 | 395 | 295 | 230 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| 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. | ||||||||||||||||||||||
| Mill 4-12KT™ • Recommended Starting Speeds [SFM] | ||||||||||||||||||||||
| Grade | KC522M | KCK15 | KCK20B | KCPK30 | KCPM40 | KCSM40 | KC725M | |||||||||||||||
| Chip Thickness hex Inch | 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 | |
| P | 1 | 1085 | 935 | 885 | – | – | – | – | – | – | 1495 | 1295 | 1215 | 970 | 855 | 805 | 1150 | 1050 | 985 | 855 | 755 | 705 |
| 2 | 900 | 785 | 655 | – | – | – | – | – | – | 920 | 835 | 755 | 820 | 705 | 590 | 985 | 885 | 720 | 720 | 625 | 525 | |
| 3 | 835 | 705 | 575 | – | – | – | – | – | – | 835 | 755 | 675 | 755 | 640 | 525 | 920 | 785 | 640 | 655 | 560 | 460 | |
| 4 | 740 | 605 | 490 | – | – | – | – | – | – | 625 | 575 | 525 | 675 | 560 | 445 | 785 | 675 | 540 | 590 | 490 | 395 | |
| 5 | 605 | 560 | 490 | – | – | – | – | – | – | 855 | 755 | 690 | 560 | 510 | 445 | 655 | 590 | 525 | 490 | 445 | 395 | |
| 6 | 540 | 410 | 330 | – | – | – | – | – | – | 525 | 445 | 360 | 490 | 375 | 295 | 590 | 460 | 330 | 425 | 330 | 260 | |
| M | 1 | 675 | 590 | 540 | – | – | – | – | – | – | 675 | 605 | 510 | 640 | 560 | 510 | 855 | 625 | 375 | 560 | 490 | 445 |
| 2 | 605 | 525 | 425 | – | – | – | – | – | – | 605 | 525 | 460 | 575 | 490 | 410 | 755 | 560 | 345 | 510 | 425 | 360 | |
| 3 | 460 | 395 | 310 | – | – | – | – | – | – | 475 | 425 | 375 | 425 | 375 | 295 | 625 | 460 | 280 | 375 | 330 | 260 | |
| K | 1 | 755 | 675 | 605 | 1380 | 1265 | 1115 | 1180 | 950 | 805 | 970 | 870 | 785 | – | – | – | – | – | – | – | – | – |
| 2 | 590 | 525 | 490 | 1100 | 970 | 900 | 920 | 755 | 640 | 770 | 690 | 625 | – | – | – | – | – | – | – | – | – | |
| 3 | 490 | 445 | 395 | 920 | 820 | 755 | 690 | 575 | 460 | 640 | 575 | 525 | – | – | – | – | – | – | – | – | – | |
| N | 1 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| 2 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
| 3 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |
| S | 1 | 130 | 115 | 80 | – | – | – | – | – | – | – | – | – | 130 | 115 | 100 | 195 | 150 | 80 | 115 | 100 | 80 |
| 2 | 130 | 115 | 80 | – | – | – | – | – | – | – | – | – | 130 | 115 | 100 | 180 | 130 | 80 | 115 | 100 | 80 | |
| 3 | 165 | 130 | 80 | – | – | – | – | – | – | – | – | – | 165 | 130 | 100 | 215 | 150 | 100 | 150 | 115 | 80 | |
| 4 | 165 | 150 | 115 | – | – | – | – | – | – | 165 | 150 | 115 | 180 | 165 | 115 | 245 | 195 | 130 | 165 | 150 | 100 | |
| H | 1 | 395 | 295 | 230 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| 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. | ||||||||||||||||||||||
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