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Drill Bit Speed - Hardwood and Softwood

Hardwood and softwood drill speed chart.

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Recommended drill bit speed in hardwood and softwood are indicated below:

Diameter (in)	Speed (rpm)
Diameter (in)	Softwood (Pine)	Hardwood (Hard Marple)	Acrylic	Brass	Aluminum	Steel
Twist drill bits
1/16 - 3/16	3000	3000	2500	3000	3000	3000
1/4 - 3/8	3000	1500	2000	1200	2500	1000
7/16 - 5/8	1500	750	1500	750	1500	600
1 1/16 - 1	750	500	-	400	1000	350
Brad-point bits
1/8	1800	1200	1500	-	-	-
1/4	1800	1000	1500	-	-	-
3/8	1800	750	1500	-	-	-
1/2	1800	750	1000	-	-	-
5/8	1800	500	750	-	-	-
3/4	1400	250	750	-	-	-
7/8	1200	250	500	-	-	-
1	1000	250	250	-	-	-
Forstner bits
1/4 - 3/8	2400	700	-	-	-	-
1/2 - 5/8	2400	500	250	-	-	-
3/4 - 1	1500	500	250	-	-	-
1 1/8 - 1 1/4	1000	250	250	-	-	-
1 3/8 - 2	500	250	-	-	-	-
Spade bits
1/4 - 1/2	2000	1500	-	-	-	-
5/8 - 1	1750	1500	-	-	-	-
1 1/8 - 1 1/2	1500	1000	-	-	-	-
1 5/8 - 2	1200	700	-	-	-	-

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Related Topics

Miscellaneous - Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more.

Related Documents

Drill Bits - Conversion Chart - Convert between drill bit dimensions - gauge numbers, inches and mm.
Hardwood and Softwood Species - Species of hardwood vs. softwood.
Lumber - Surface Finishing - Lumber and surface finishing abbreviations.
Metric Bolt Head and Wrench Size - ANSI/SO, DIN and JIS bolts.
Steel Bolts - SAE Grades - SAE steel bolts - grades ranging grade 1 to 8.2 - proof and tensile strength.
US Wood Screws - Nominal Sizes - Wood screws - nominal sizes vs. diameters.
US Wood Screws - Pilot Holes - Hard wood and soft wood pilot holes, shank clearance holes and countersink diameters.
Withworth Threads - Taps and Drill Sizes - Taps and drill sizes used for Whitworth - ISO 7 and ISO 228 threads.
Wood - Densities of Various Species - Densities of various wood species - apple, ash, cedar, elm and more.
Wood Hardness - Soft and hardwood - the Janka Hardness scale.
Wood Screws - Withdrawal Force - Allowable withdrawal load force.

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