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TOOL TIPSYou will extend the life of your bits and do
Following a few simple tips will reduce wearneater work if you always put the bit in
on the tool and the chance of injury to thecontact with the workpiece BEFORE pulling
operator.the trigger. During operation, hold the drill
firmly and exert moderate, steady pressure.
The high efficiency available from theToo much pressure at low speed will stall the
BOSCH Rotary Hammer can only behammer. Too little pressure will keep the bit
obtained if sharp and undamaged drillingfrom cutting and cause excess friction by
tools are used. Note that the costs forsliding over the surface. This can be
maintaining sharp drilling tools are moredamaging to the drill and bit.
than offset by the time lost in operating dull
drilling tools.Shanks of all drill bits should be wiped clean
All grease packed hammers require a shortprior to using and immediately after removing.
time to warm up. Depending on theRecall these instructions for safe operation:
temperature, this time will vary from1. Some materials require slow drilling
approximately 15 seconds (90! F) to 2speeds; whereas, others require higher speed
minutes (32! F). The tool will exert its fullto produce the best results.
power and hammering action after the heat
from impact hammering has spread,2. All work must be supported or secured
softening the grease. A new hammerbefore drilling and steady, even pressure
requires a break in period before fullapplied in line with the drill bit.
performance is realized. This period may3. As the drill bit cuts through the opposite
vary from 30 minutes to 10 hours ofside, reduce the pressure and continue
operation.running the drill as the bit is withdrawn.
Materials such as glass, porcelain, ceramics,
Carbide tipped bits: Used for drilling stone,
concrete, cement, brick, cinder block andtiles, plastics, etc., should be drilled at low
other unusually hard non-metals. The Rotaryspeeds with specially designed drill bits and
Hammer is designed for OSDS� Carbidelubricants.
Tipped Bits up to 3/4 inch diameter.
3 JAW CHUCK
The 3 Jaw Chuck with SDS Shank Adaptor
accessory can convert your tool for use with
straight shank bits.
DRILLING WOOD OR PLASTICmake a smaller hole and enlarge it to the
If backing block is not used, ease up on therequired size. Lubricate the tip of the bit
pressure just before the bit breaks throughoccasionally with CUTTING OIL for easier
the wood to avoid splintering. Complete themetal drilling. If bit binds, reverse the drilling
hole from the opposite side immediatelyto help remove the bit from the work.
after the point breaks through. If bit binds,
reverse the drilling operation to help removeDRILLING MASONRY
the bit from the work.Use carbide-tipped masonry bit for cinder
block, mortar, common brick, soft stone and
DRILLING METALother materials. The amount of pressure to
Make a center punch in the material forbe used is dependent upon the type of
easier starting. Use enough pressure to keepmaterial being drilled. Soft materials require
the bit cutting. If the bit is allowed to merelyless pressure while the hard materials need
spin in the hole, it will become dull within amore pressure to prevent the drill bit from
short time. When drilling a larger hole, it isspinning.
faster and easier on your power pack to first
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ACEC
BOSCH
