Bosch GST 14.4 V Professional Instructions d'exploitation télécharger pdf (Page 24)

24 | English

1 609 929 N47 | (29.1.08) Bosch Power Tools

Controling the Stroke Rate

Increasing or reducing the pressure on the

On/Off switch 2 enables stepless stroke-rate

control of the switched-on machine.

Light pressure on the On/Off switch 2 results in

a low stroke rate. Increasing the pressure also

increases the stroke rate.

The required stroke rate is dependent on the

material and the working conditions and can be

determined by a practical trial.

Reducing the stroke rate is recommended when

the saw blade engages in the material as well as

when sawing plastic and aluminium.

After longer periods of work at low stroke rate,

the machine can heat up considerably. Remove

the saw blade from the machine and allow the

machine to cool down by running it for approx.

3 minutes at maximum stroke rate.

Working Advice

f When sawing small or thin workpieces,

always use a firm support.

Contact Protector

The contact protector 11 attached to the casing

prevents accidental touching of the saw blade

during the working procedure and may not be

removed.

Plunge Cutting (see figures E–F)

f Plunge cuts may only be applied to soft ma-

terials, such as wood, gypsum plaster

boards, etc.!

Use only short saw blades for plunge cutting.

Plunge cutting is possible only with the mitre an-

gle set at 0°.

Place the machine with the front edge of the

base plate 5 on to the workpiece without the

saw blade 12 touching the workpiece and

switch on. For machines with stroke rate con-

trol, select the maximum stroke rate. Firmly

hold the machine against the workpiece and by

tilting the machine, slowly plunge the saw blade

into the workpiece.

When the base plate 5 fully lays on the workpiece,

continue sawing along the desired cutting line.

Parallel Guide with Circle Cutter (Accessory)

For cuts using the parallel guide with circle cut-

ter 18 (accessory), the thickness of the material

must not exceed a maximum of 30 mm.

Parallel Cuts (see figure G): Loosen the locking

screw 17 and slide the scale of the parallel guide

through the lead 16 in the base plate. Set the

desired cutting width as the scale value on the

inside edge of the base plate. Tighten the lock-

ing screw 17.

Circular Cuts (see figure H): Set the locking

screw 17 to the other side of the parallel guide.

Slide the scale of the parallel guide through the

lead 16 in the base plate. Drill a hole in the work-

piece centred in the section to be sawn. Insert

the centring tip 19 through the inside opening of

the parallel guide and into the drilled hole. Set

the radius as the scale value on the inside edge

of the base plate. Tighten the locking screw 17.

Coolant/Lubricant

When sawing metal, coolant/lubricant should be

applied alongside cutting line because of the

material heating up.

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Bosch GST 14.4 V Professional Instructions d'exploitation Page 24

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