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4HEM RPM : rev./min Feed : mm/min

Hardened Steels Hardened Steels

Material SKD61 SKD11

Hardness 45HRc ~ 55HRc 55HRc ~ 62HRc

Outside Diameter RPM FEED Ap RPM FEED Ap
800
1mm 40,000 1,200 0.05 40,000 900 0.03
1.5mm 40,000 1,500 0.05 40,000 1,000 0.04
2mm 40,000 2,000 24,000 2,280 0.05
3mm 38,400 4,560 0.1 19,200 2,640
4mm 28,800 5,280 0.2 14,400 3,000 0.1
5mm 24,000 6,000 0.2 12,000 3,480 0.1
6mm 19,200 6,960 0.2 3,480 0.1
8mm 14,400 6,960 0.3 9,600 3,480 0.2
10mm 11,520 6,960 0.4 7,200 2,880 0.2
12mm 5,760 0.5 5,760 2,160 0.3
16mm 9,600 4,320 0.6 4,800 1,680 0.3
20mm 7,200 3,480 0.8 3,600 0.5
5,760 2,880 0.03D (D 3) 0.5
1 0.05D (D 3)
(MAX. 0.5mm)
0.05D
1D
Depth of Cut 1.5D

6&8HEM RPM : rev./min Feed : mm/min

Hardened Steels Hardened Steels

Material SKD61 SKD11

Hardness 45HRc ~ 55HRc 55HRc ~ 62HRc

Outside Diameter RPM FEED Ap RPM FEED Ap
3mm 1,900
4mm 32,000 3,800 0.2 16,000 2,200 0.1
5mm 24,000 4,400 0.2 12,000 2,500 0.1
6mm 20,000 5,000 0.2 10,000 2,900 0.1
8mm 16,000 5,800 0.3 2,900 0.2
10mm 12,000 5,800 0.4 8,000 2,900 0.2
12mm 5,800 0.5 6,000 2,400 0.3
16mm 9,600 4,800 0.6 4,800 1,800 0.3
20mm 8,000 3,600 0.8 4,000 1,400 0.5
25mm 6,000 2,900 3,000 1,000 0.5
4,800 2,000 1 2,400 0.5
3,000 1 2,000 0.03D (D 3)
0.05D (D 3)
0.05D (MAX. 0.5mm)

Depth of Cut 1.5D 1D

229 JJ TOOLS