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Mill 4-12KT™ • Shell Mill • Metric
Shoulder milling cutter • For Steel and Cast Iron
Features and benefits
- Fine, coarse, and medium pitch cutters.
- Advanced insert/pocket interface ensures stability and consistent performance in difficult applications.
- Up to 15% lower power consumption.
- Easy insert indexing through screw clamping.
Insert Selection Guide
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 | – | – | – | – | – | – |
Recommended Starting Feeds [mm]
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. |
Recommended Starting Feeds [IPT]
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. |
Recommended Starting Speeds [m/min]
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. |
Recommended Starting Speeds [SFM]
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. |