Bosch Power Tools 400 Series XPR manual Operating Speeds, Switch Setting Speed Range RPM

OPERATION (CONTINUED)

Operating Speeds
To achieve the best results when working
with different materials, set the variable
speed control to suit the job. To select the
right speed for the accessory in use, practice
with scrap material first.
NOTE: Speed is affected by voltage changes. A
reduced incoming voltage will slow the RPM of the
tool, especially at the lowest setting. If your tool
appears to be running slowly, increase the speed
setting accordingly. The tool may not start at the
lowest switch setting in areas where outlet voltage
is less than 120 volts. Simply move the speed set-
ting to a higher position to begin operation.
The 400 Series XPR Rotary Tool switch set-
tings are marked on the speed control dial.
Refer to the Speed Settings chart on pages
11 thru 13 to help determine the proper
speed for the material being worked on and
the accessory to use.
Most jobs can be accomplished using the
tool at the highest setting. However, certain
materials (some plastics and metals) can be
damaged by high-speed generated heat and
should be worked on at relatively slow
speeds.
Slow speed operation (15,000 RPM or less)
is usually best for polishing operations
employing the felt polishing accessories, del-
icate wood carving and fragile model parts.
All brushing applications require lower
speeds to avoid wire discharge from the
holder. Let the performance of the tool do the
work for you when using lower speed set-
tings.
Higher speeds are better for drilling, carving,
cutting, routing, shaping, cutting dadoes or
rabbets in wood. Hardwoods, metals and
glass require high speed operation also.
The settings for approximate RPM’s are:
Switch Setting	Speed Range RPM
2	5,000-8,000
4	9,000-11,000
6	12,000-17,000
8	18,000-24,000
10	25,000-35,000

Set the Speed Control to the desired setting.

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Some guidelines regarding tool speed:

• There is no accessory for the Dremel Rotary tool that will drill or cut glass.

• Plastic and other materials that melt at low temperatures should be cut at low speeds.

• Polishing, buffing and cleaning with a wire brush must be done at speeds not greater than 15,000 RPM to prevent damage to the brush and your material.

• Wood should be cut at high speed.

• Iron or steel should be cut at high speed.

• If a high speed steel cutter starts to vibrate, it usually indicates that it is running too slow.

• Aluminum, copper alloys, lead alloys, zinc alloys and tin may be cut at various speeds, depending on the type of cutting being done. Use a paraffin (not water) or other suitable lubricant on the cutter to pre- vent the cut material from adhering to the cutter teeth.

NOTE: Increasing pressure on the tool is not the answer when it is not performing proper- ly. Try a different accessory or speed setting to achieve the desired result. Please refer to the following Speed Setting charts or simply contact Dremel Consumer Service at:

1-800-437-3635

or at www.Dremel.com.

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