Grizzly G0492 Using the Mill, To determine and set the mill to the needed cutting RPM, 8deeZg

Setting the Spindle

RPM

NOTICE

Never shift gears while lathe or mill is running; otherwise, the gear teeth will be chipped or broken.

To determine and set the mill to the needed cutting RPM:

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Cutting Speeds for High Speed Steel (HSS) cutting tools:

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Note: Double the cutting speed for car- bide cutting tools. These values are a guideline only. Refer to the MACHINERY'S HANDBOOK for more detailed information.

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(Cutting Speed x 4) / Tool Diameter = RPM

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Note:You will only be able to get an approxi- mate RPM value with the variable speed knob.

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NOTICE

Failure to follow RPM and Feed Rate Guidelines will shorten cutter life and give poor workpiece results and may threaten operator safety from ejected parts or broken tools.

Using the Mill

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To use the quill:

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Note: The quill feed handle is spring loaded. DO NOT let go of the handle at the end of a drilling operation or the quill will quickly retract and slam into the headstock.

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