Royce//Ayr

Chipload Calculator

Royce//Ayr *makes it easy* to determine Feed Rates, Knife marks per inch & Chipload per tooth. View the recommended values in the charts below and use the calculator to determine approximate settings for your machinery. The calculation results should serve as a starting point to determine optimum feed speeds and RPM for your machinery.		Note: the calculations below provide approximate values which may vary depending on application, material and machine
Quality vs Feed Speed

Approximate Values for Average Chip Load:
Furniture finish: Mill finish: Hogging:	.012" to .032" .032" to .100" .100" to .200"

Hook Angles

Knife Marks Per Inch

Wood Species	Kiln Dried	Wet or Green
Ash Basswood Beech Birch Cedar Cherry Chestnut Cottonwood Cypress Elm, Soft Fir Gum Hemlock Hickory Mahogany Maple Oak Pine Poplar Redwood Spruce Sycamore Walnut	10° 10° 10° 10° 15° 10° 10° 10° 10° 10° 15° 20° 15° 10° 10° 10° 10° 20° 20° 10° 20° 10° 10°	15° 22° 15° 15° 25° 15° 15° 15° 15° 10° 15° 25° 22° 15° 15° 15° 15° 22° 30° 15° 25° 15° 15°

Wood Species	Marks Per Inch
Ash Basswood Beech Birch Cedar Cherry Chestnut Cottonwood Cypress Elm, Soft Elm, Hard Fir Gum Hemlock Hickory Mahogany Maple Oak Pine Poplar Redwood Spruce Sycamore Walnut	11-14 8-12 12-14 12-16 8-12 12-14 8-12 8-12 8-12 8-12 10-13 8-12 9-14 8-12 12-16 12-16 12-14 12-14 8-14 8-14 8-12 8-12 10-14 12-14

Maximum RPM for Insert Tooling

* The values above are approximate calculations based on optimal cutting conditions. RPM may have to be adjusted based on application, material or machinery deficiencies.

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