Kickback is theresult of power tool misuse and/or in-
c
orrect operating procedures or conditions and canbe
avoidedbytakingproperprecautionsasgiven below.
a) Maintainafirmgriponthepowertool andposi-
tion your body and armtoallowyou to resist
kickbackforces. The operator can control kickback
forces, if proper precautions are taken.
b) Use special carewhen working corners, sharp
edges etc. Avoid bouncing and snaggingtheac-
cessory. Corners, sharp edgesorbouncing have a
tendency to snag the rotating accessory andcause
lossofcontrol or kickback.
c) Do not attachatoothed saw blade. Such blades
create frequentkickback and loss of control.
d) Alwaysfeedthebit into thematerialinthesame
directionasthecuttingedgeis exiting from the
material(which is the same direction as the
chips are thrown). Feeding the toolinthe wrong
directioncauses the cutting edgeofthe bittoclimb
outof thework and pull the toolinthe directionof
this feed.
e) When using rotary files, cut-offwheels,high-
speed cutters or tungsten carbide cutters, al-
wayshave the work securely clamped. These
wheels will grab if they becomeslightlycantedin
the groove, andcankickback.Whenacut-off wheel
grabs, the wheel itself usually breaks. Whenarotary
file, high-speed cutter or tungsten carbide cutter
grabs, it may jump from the groove and you could
lose control of the tool.
Safety warnings specific for grinding andabrasive
cutting-off operations:
a) Useonlywheeltypesthatare recommended for
your power tool andonlyfor recommended ap-
plications.Forexample: do not grind with the
side of a cut-off wheel. Abrasive cut-off wheelsare
intended for peripheral grinding, side forces applied
to these wheels maycause themtoshatter.
b) Forthreaded abrasive cones andplugs use only
undamaged wheel mandrels withan unrelieved
shoulder flangethatareofcorrect size and
length. Proper mandrels will reduce the possibility
o
f breakage.
c) Do not“jam”acut-offwheelorapply excessive
pressure. Do not attempttomake an excessive
depthofcut.Overstressing thewheel increases the
loading andsusceptibility to twisting or snagging of
thewheel in the cut and the possibility of kickback
or wheel breakage.
d) Do not position your handin linewith and behind
the rotating wheel. When the wheel,atthe point
of operation,ismovingawayfromyour hand, the
possiblekickback may propel thespinning wheel
and the power tool directlyatyou.
e) Whenwheelispinched,snagged or when inter-
ruptingacutforanyreason, switch offthe
power tool and holdthepower toolmotionless
until the wheel comes to a complete stop. Never
attemptto removethecut-offwheelfromthe
cutwhilethe wheelisin motion otherwise kick-
back may occur. Investigate and take corrective ac-
tiontoeliminate thecauseofwheel pinchingor
snagging.
f) Do not restartthecuttingoperation in the work-
piece. Letthewheel reachfullspeed and care-
fully re-enter the cut. The wheel may bind,walk
up or kickbackifthe power tool isrestartedinthe
workpiece.
g) Support panelsoranyoversizedworkpieceto
minimize the riskofwheel pinching and kick-
back. Large workpieces tend to sag under theirown
weight. Supports must be placed under the work-
piece near the lineofcutand near the edgeofthe
workpiece on bothsidesofthewheel.
h) Use extra caution when makinga“pocket cut”
into existingwallsorotherblind areas. The pro-
trudingwheel maycutgasorwater pipes, electrical
wiringorobjects that cancause kickback.
Safety warnings specific for wire brushingopera-
tions:
a) Be awarethatwire bristles arethrown by the
brush even during ordinaryoperation. Do not
overstress the wiresby applying excessive load
- 13 -
To Next Page
Loading...
