DIAbide Drills

Machining Guidelines

Recommended starting parameters for drilling
Material	Graphite, hard carbon	Green ceramic, green carbide, powder filled plastics	Unfilled plastics	Fiber reinforced plastics	Duralcan	Free machining and low silicon aluminums
Cutting Speed sfm (m/min)	200 – 1500 (60 – 450)	200 – 1000 (60 – 300)	200 – 700 (60 – 200)	200 – 500 (60 – 150)	100 – 500 (30 – 150)	100 – 600 (30 – 180)
Drill diameter inches (mm)	Feed rate ipr (mm/rev)
1/32 1/16 (0.8 – 1.6)	.00025 – .001 (.006 – .025)	.0002 – .00075 (.005 – .019)	.00025 – .001 (.006 – .025)	.00025 – .001 (.006 – .025)	–	–
1/16 – 1/8 (1.6 – 3.0)	.0005 – .002 (.012 – .050)	.0005 – .0015 (.012 – .040)	.0005 – .002 (.012 – .050)	.0005 – .002 (.012 – .050)	–	–
1/8 – 3/16 (3.0–5.0)	.001 – .004. (.025 – .100)	.001 – .003 (.025 – .075)	.001 – .004 (.025 – .100)	.001 – .004 (.025 – .100)	.001 – .003 (.025 – .075)	.001 – .003 (.025 – .075)
3/16 – 1/4 (5.0 – 6.0)	.002 – .005 (.050 – .125)	.002 – .004 (.050 – .100)	.002 – .005 (.050 – .125)	.002 – .005 (.050 – .125)	.002 – .004 (.050 – .100)	.002 – .004 (.050 – .100)

1/4 – 5/16 (6.0 – 8.0)	.002 – .006 (.050 – .150)	.002 – .005 (.050 – .125)	.002 – .006 (.050 – .150)	.002 – .006 (.050 – .150)	.002 – .005 (.050 – .125)	.002 – .005 (.050 – .125)
5/16 – 3/8 (8.0 – 10.0)	.002 – .008 (.050 – .200)	.002 – .006 (.050 – .150)	.002 – .008 (.050 – .200)	.002 – .008 (.050 – .200)	.002 – .006 (.050 – .150	.002 – .006 (.050 – .150
3/8 – 1/2 (10.0 – 12.5)	.002 – .010 (.050 – .250)	.002 – .008 (.050 – .200)	.002 – .010 (.050 – .250)	.002 – .008 (.050 – .200)	.002 – .008 (.050 – .200)	.002 – .008 (.050 – .200)

1/2 – 3/4 (12.5 – 19.1)	.002 – .012 .050 – .300)	.002 – .010 (.050 – .250)	.002 – .012 (.050 – .300)	.002 – .010 (.050 – .250)	.002 – .010 (.050 – .250)	.002 – .010 (.050 – .250)
Cutting speed: sfm = surface feet per minute; m/min = meters per minute. Feed rate: ipr = inches per revolution; mm/rev = mm per revolution.

For assistance call 888-547-4156

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