Harbor-freight-tools 44836 Manual do Utilizador descarregar pdf (Página 8)

SKU 44836 PAGE 8

To Obtain The Proper Cutting Speeds:

1. Factors which determine the best speed to use in the Drill Press are:

A. The kind of material being drilled.

B. The size of the hole.

C. The quality of cut desired.

2. Generally, in soft material the speed should be higher than for hard materials. The

following guide indicates the proper Drill Press speed (RPM) for a given drill bit size

and the material being drilled. (See Figure C.)

FIGURE C

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Harbor-freight-tools 44836 Manual do Utilizador Página 8