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4HSE / 4HCE Apply 20% up values of below condition for 4HSE RPM : rev./min Feed : mm/min

Material Alloy Steels/ Hardened Steels
Heat Resistant Steels NAK / SKD
Hardness
30HRc ~ 40HRc 40 ~ 50HRc
Outside Diameter
1mm RPM FEED RPM FEED
2mm
3mm 48,000 1,480 38,000 1,050
4mm 33,300 1,750 26,000 1,250
5mm 21,800 1,750 17,300 1,250
6mm 16,700 1,800 13,200 1,300
7mm 15,700 2,000 12,500 1,500
8mm 13,100 1,950 10,350 1,400
9mm 11,000 1,900 1,380
10mm 1,880 9,000 1,350
11mm 9,880 1,750 7,800 1,260
12mm 7,800 1,750 6,150 1,260
14mm 6,650 1,680 5,250 1,150
16mm 5,600 1,680 4,300 1,150
18mm 5,600 1,600 4,300 1,050
20mm 4,650 1,600 3,500 1,050
4,650 1,560 3,500 1,000
Milling Amount of 3,750 1,460 2,800
Side Milling 3,500 2,600 980

0.03D
0.02D

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

Carbon Steels Hardened Steels/ Stainless Steels Hardened Steels
Prehardened Steels SUS304 / SUS316
Material S50 / SCM SKD61
NAK / SKD61
Hardness
~ 30HRc 30 ~ 45HRc 45 ~ 55HRc
Outside Diameter
RPM FEED RPM FEED RPM FEED RPM FEED
1mm
1.5mm 6,800 85 5,800 85 4,800 55 4,000 25
2mm 6,000 90 5,000 90 4,100 60 3,400 30
3mm 5,000 100 4,000 86 3,200 65 2,800 40
4mm 4,200 110 3,400 95 2,600 70 2,100 50
5mm 3,400 140 2,700 110 2,100 85 1,700 60
6mm 2,900 170 2,300 140 1,800 100 1,500 70
8mm 2,500 200 2,000 170 1,500 130 1,300 85
10mm 1,900 220 1,500 170 1,200 150 1,000 85
12mm 1,600 220 1,300 170 130 85
16mm 1,300 170 1,100 150 950 100 800 70
20mm 1,000 140 110 800 80 670 50
25mm 110 820 85 600 70 500 40
800 85 650 70 480 50 400 35
650 520 380 320
0.02D
(Max. 0.3mm)

0.05D 2D
(Max. 0.5mm)
Depth of Cut 0.3D
2.5D (Max. 3mm)

0.05D
(Max. 0.5mm)

When cutting austenic stainless steels, the use of water-soluble cutting fluid is effective.
If the depth of cut is shallow, the revolution and feed rate can be increased.
When drilling, please set the feed rate at 1/3 or below the values above.
If the rigidity of the machine or the work materials installation is very low, or chattering and noise are generated, reduce the revolution and
feed rate proportionately.

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