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release button, slide the depth gauge toRECALL THESE INSTRUCTIONS FOR
desired depth and release pressure onSAFE OPERATION:
button to lock the depth gauge in place.1. Some materials require slow drilling
TOOL TIPSspeeds; whereas, others require higher speed
to produce the best results.
Following a few simple tips will reduce wear
on the tool and the chance of injury to the2. All work must be supported or secured
operator.before drilling and steady, even pressure
applied in line with the drill bit.
The high efficiency available from the
BOSCH Rotary Hammer can only be3. As the drill bit cuts through the opposite
obtained if sharp and undamaged drillingside, reduce the pressure and continue
tools are used. Note that the costs forrunning the drill as the bit is withdrawn.
maintaining sharp drilling tools are more thanMaterials such as glass, porcelain, ceramics,
offset by the time lost in operating dulltiles, plastics, etc., should be drilled at low
drilling tools.speeds with specially designed drill bits and
All grease packed hammers require a shortlubricants.
time to warm up. Depending on theDRILLING WOOD OR PLASTIC
temperature, this time will vary from
approximately 15 seconds (90! F) to 2If backing block is not used, ease up on the
pressure just before the bit breaks through
minutes (32! F). The tool will exert its fullthe wood to avoid splintering. Complete the
power and hammering action after the heathole from the opposite side immediately
from impact hammering has spread,after the point breaks through. If bit binds,
softening the grease.
reverse the drilling operation to help remove
CARBIDE TIPPED BITSthe bit from the work.
Used for drilling stone, concrete, cement,
brick, cinder block and other unusually hardDRILLING METAL
non-metals. The Rotary Hammer is designedMake a center punch in the material for
easier starting. Use enough pressure to keep
for OSDS� Carbide Tipped Bits up to 3/4 inchthe bit cutting. If the bit is allowed to merely
diameter.
spin in the hole, it will become dull within a
3 JAW CHUCKshort time. When drilling a larger hole, it is
The 3 Jaw Chuck with SDS Shank Adaptorfaster and easier on your power pack to first
accessory can convert your tool for use withmake a smaller hole and enlarge it to the
straight shank bits. required size. Lubricate the tip of the bit
You will extend the life of your bits and dooccasionally with CUTTING OIL for easier
neater work if you always put the bit inmetal drilling. If bit binds, reverse the drilling
to help remove the bit from the work.
contact with the workpiece BEFORE pulling
the trigger. During operation, hold the drillDRILLING MASONRY
firmly and exert moderate, steady pressure.Use carbide-tipped masonry bit for cinder
Too much pressure at low speed will stall theblock, mortar, common brick, soft stone and
hammer. Too little pressure will keep the bit
other materials. The amount of pressure to
from cutting and cause excess friction bybe used is dependent upon the type of
sliding over the surface. This can bematerial being drilled. Soft materials require
damaging to the drill and bit.less pressure while the hard materials need
Shanks of all drill bits should be wiped cleanmore pressure to prevent the drill bit from
prior to using and immediately after removing. spinning.
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ACEC
