HSM Guide Speed & Feed Recommendations for 3-D Machining with OSG Ball End Mills
For Standard LDR (Up to 6:1)
Speeds
Roughing & Semi-finishing
Finishing
Diameter
RPM
RPM
30 - 40 HRC 38,400 – 60,000 26,400 – 42,000 21,600 – 31,200 19,200 – 28,800 15,000 – 19,776 12,120 – 16,800 11,400 – 15,900 10,560 – 14,520 9,480 – 12,480 8,280 – 10,920
40 - 50 HRC 32,000 – 50,000 22,000 – 35,000 18,000 – 26,000 16,000 – 24,000 12,500 – 16,480 10,100 – 14,000 9,200 – 13,250 8,800 – 12,100 7,900 – 10,400 6,900 – 9,100
50 - 60 HRC 24,600 – 40,000 16,600 – 28,000 13,400 – 20,800 11,800 – 19,200 9,000 – 13,184 7,080 – 11,200 6,360 – 10,600 6,040 – 9,680 5,320 – 8,320 4,520 – 7,280
30 - 40 HRC 20,000 – 50,000 20,000 – 50,000 20,000 – 50,000 20,000 – 50,000 20,000 – 34,000 18,000 – 24,400 14,600 – 19,000 12,000 – 16,200 10,000 – 13,900 9,100 – 12,200
40 - 50 HRC 20,000 – 50,000 20,000 – 50,000 20,000 – 50,000 20,000 – 38,000 20,000 – 26,000 15,000 – 18,000 12,000 – 14,000 10,000 – 12,000 8,700 – 10,400 7,800 – 9,800
50 - 60 HRC 20,000 – 50,000 20,000 – 50,000 20,000 – 50,000 20,000 – 30,500 16,000 – 20,300 12,000 – 15,000 9,700 – 12,000 8,100 – 10,000 6,900 – 8,700 6,100 – 7,600
1/32 1/16 3/32
1/8
3/16
1/4
5/16
3/8
7/16
1/2
Chip Load per Tooth
30 - 40 HRC
40 - 50 HRC
50 - 60 HRC
Diameter
Rough & Semi 0.0006 – 0.0010 0.0012 – 0.0016 0.0020 – 0.0025 0.0025 – 0.0030 0.0035 – 0.0043 0.0050 – 0.0060 0.0063 – 0.0070 0.0070 – 0.0080 0.0080 – 0.0087 0.0087 – 0.0100
Finishing
Rough & Semi 0.0006 – 0.0008 0.0010 – 0.0015 0.0015 – 0.0022 0.0020 – 0.0027 0.0032 – 0.0041 0.0050 – 0.0057 0.0052 – 0.0066 0.0062 – 0.0077 0.0068 – 0.0084 0.0080 – 0.0092
Finishing
Rough & Semi 0.0004 – 0.0007 0.0008 – 0.0012 0.0012 – 0.0020 0.0017 – 0.0022 0.0030 – 0.0039 0.0040 – 0.0050 0.0051 – 0.0062 0.0060 – 0.0072 0.0066 – 0.0080 0.0078 – 0.0090
Finishing
1/32 1/16 3/32
0.0006 – 0.0009 0.0010 – 0.0015 0.0014 – 0.0024 0.0019 – 0.0028 0.0032 – 0.0042 0.0040 – 0.0053 0.0053 – 0.0068 0.0062 – 0.0079 0.0068 – 0.0086 0.0080 – 0.0094
0.0005 – 0.0007 0.0010 – 0.0014 0.0014 – 0.0020 0.0019 – 0.0026 0.0030 – 0.0040 0.0040 – 0.0051 0.0052 – 0.0063 0.0054 – 0.0065 0.0060 – 0.0078 0.0070 – 0.0090
0.0004 – 0.0006 0.0007 – 0.0010 0.0010 – 0.0014 0.0015 – 0.0020 0.0023 – 0.0031 0.0038 – 0.0048 0.0046 – 0.0054 0.0050 – 0.0061 0.0053 – 0.0070 0.0062 – 0.0081
1/8
3/16
1/4
5/16
3/8
7/16
1/2
Axial Depths of Cut ( a a) 30 - 40 HRC 10% of Diameter 40 - 50 HRC 7% of Diameter 50 - 60 HRC 5% of Diameter
Radial Depths of Cut ( a r) Up to 35% of Diameter for roughing and semi-finishing operations. However, radial depths of cut for finishing operations are normally determined by the surface finish requirements specific to each application.
osgtool.com
1515
End Mill Technical
Powered by FlippingBook