Craftsman 351.21 4300 Saw User Manual


 
SPECIFICATIONS
Depth of throat ............................. 18"
Maximum depth of cut ...................... 10s/4''
Table size ........................... 23% x 21%"
Table tilt ............................ -15 to +15 °
Wheel diameter ............................ 18"
Blade length .............................. 140"
Blade width ............................. 1/8to %"
Blade speeds .... infinitely variable from 80 to 385 FPM
Overall dimensions .................. 75 x 37 x 30"
Shipping weight ........................ 1012 Ibs
Dust collection port ........................... 4"
CAUTION: Always observe the following safety
precautions:
Make sure that blade guides and thrust bearings are
positioned and adjusted correctly to prevent side-
ways and rearward movement of the blade. Adjust
upper guide to just clear workpiece.
Check to make sure blade is tensioned and tracking
properly. Do not over tension the blade in order to
prevent premature blade wear and breakage. Avoid
under tensioning to eliminate back and forth, side to
side blade movement as it cuts.
Use proper blade and speed for the cutting operation.
After turning saw on, allow blade to come to full
speed before attempting any cutting operation.
Support workpiece properly and use a smooth
steady feed to guide work through the cut. Use
push sticks or push blocks when required.
Keep hands away and out of line with moving parts.
Always wear eye protection.
OPERATING SAW CONTROLS
Refer to Figures 6 and 7.
Band saw control panel has three functional operations:
ON - Green color push button that energizes the
magnetic contactor to start the band saw.
OFF - Red color push button that deenergizes the
magnetic contactor to stop the band saw. To restart the
saw, turn the knob to reset and depress the ON button.
KEY - Key switch locks machine to prevent
unauthorized use.
Key
Off On
÷
Figure 6 - Band Saw Control
The control panel for the blade welder is shown in
Figure 7. The welding circuitry is energized independent
of the band saw circuitry. To operate the welder, plug in
the line cord to a proper power source.
CAUTION: Do not operate the band saw and the
welder at the same time.
Anneal Button
Weld Button --
Movable Jaw --
Grinder Switch -
cTD,
@
Figure 7 - Blade Welder Control
@
Weld Pressure
-- Adjustment
Knob
Stationary
Jaw
....Jaw Clamping
Handles
REMOVING BLADE
Refer to Figures 15 and 16.
WARNING: Disconnect band saw from power source
when changing or adjusting blades. Wear leather gloves
when handling band saw blades. Never wear gloves
when operating saw.
Turn handwheel (Figure 15, Key No. 38) counter-
clockwise. This lowers the idler wheel (Figure 15,
Key No. 5) and relieves tension in blade.
Remove blade guard (Figure 16, Key No. 39) by
loosening screws (Figure 16, Key No. 49).
Pull handle (Figure 15, Key No. 69) to open upper
and lower doors (Figure 15, Key Nos. 36 and 67).
Be careful, blade may spring from saw.
Remove blade from wheels and guide it out
through table slot.
INSTALLING BLADE
Although many of the adjustments may not be altered
when blade is removed, every adjustment should be
checked prior to using a newly installed blade.
Follow safety precautions every time saw is operated.
Make sure blade teeth are pointing down towards
table. Turn blade inside out if necessary.
Slip new blade into table slot and over upper and lower
blade wheels and center blade on blade wheels. Slide
blade in between blade guides. Replace table stud.
Replace blade guards after blade guide adjustment.
Tension and track blade as described in the following
sections.
6