Craftsman 320.27680 Operator's Manual download pdf (Page 26)

Variable Speed Selection Chart

Never exceed these bit speeds

Cutting-Bit Diameter Maximum Speed

UP to 1 in. (25mm) 9

1-1/4 in. to 1-3/4 in. (31-44mm) 7-8

2 in. to 2-1/2 in. (50-63.5mm) 5-6

2-3/4 in. to 3 in. (69-75mm) 3-4

3 in. to 3-1/2 in. (75-90mm) 1-2

Reduce the speed when using extra large bits (with a cutting diameter 1 inch

or greater) or heavy cutter bits. Changing the rate of feed can also improve the

quality of the cut.

APPLICATIONDIAL SETTING

RPM

10,000

12,000

14,000

16,000

18,000

20,000

22,000

24,000

25,000

Non-ferrous metal, hardwoods, larger diameter

cutter bits

Softwoods, plastics, countertops, smaller

diameter cutter bits

The speed charts above indicate the relationship between the speed setting

and the cutting application. Exact settings are determined through operator

experience and preference, and also by recommendations by manufacturers of

cutter bits.

ELECTRONIC FEEDBACK CIRCUITRY

The router electronic feedback circuitry monitors and adjusts power to maintain

the desired speed for consistent performance and control, providing constant

speed under load for a high-quality finish in all materials.

PLACING THE ROUTER ONTO THE WORKPIECE AND STARTING THE CUT

A_, WARNING: Before operating the router, follow all safety instructions in this

manual. Failure to do so could result in serious personal injury.

NOTICE Making test cuts is essential with most routing applications. A test cut

will give a feel for the set-up, the router's speed, the depth of cut, and how the

cutting bit reacts to the workpiece.

27683 ManuaLRevised_11-0120 Page 26

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Craftsman 320.27680 Operator's Manual Page 26