Jet HBS-56S Operating Instructions And Parts Manual

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Jet HBS-56S Operating Instructions And Parts Manual Manual pdf 15 page image

15Blade TensionUse the knob (Figure 15) to tension the blade.Clockwise tightens the blade, counterclockwiseloosens it.Blade TrackingTracking the blade requiresthat the band saw be operating while theback blade cover is removed. Use extremecaution and keep hands away from blade.The blade provided with your band saw hasalready been tracked at the factory and requiresno adjustment.When the blade is replaced, tracking may berequired for the new blade. It is recommendedthat tracking be done by a person experiencedin these procedures and aware of the dangersinvolved.1. Turn the socket set screw (Figure 15) asneeded to shift the angle of the idler wheel.NOTE: This adjustment is sensitive; do itgradually and in small increments allowingthe wheel to respond to the changes.2. Tracking is set properly when the back ofthe blade lightly touches the wheel shoulder.NOTE: Over-tracking (allowing blade backto rub hard against wheel shoulder) willdamage the blade wheels and blade.Setting Blade Speed1. Disconnect band saw from power source.2. Open the pulley cover.3. Loosen the knob (see A, Figure 3) and liftup on the motor. Move the belt to thedesired pulley grooves. A chart is affixed tothe inside of the belt guard showing thepositions for the three speeds, 80, 120 and200 surface feet per minute (SFPM). Thischart is also shown in Figure 16.4. Push the motor back down to tension thebelt, and tighten the knob (A, Figure 3).Material chips or shavings are the best indicatorof proper blade speed and downfeed rate. Theideal chip is thin, tightly curled and warm to thetouch. Chips that range from golden brown toblack indicate excessive force. Blue chipsindicate extreme heat from too high a bladespeed, which will shorten blade life. Thin orpowdered chips indicate insufficient downfeedrate.Figure 15Figure 16