Delta 28-348 Saw User Manual


 
22
OPERATIONS
Before starting the machine, insure that all adjustments are properly made and the guards are in place. Turn the upper
wheel by hand to make sure that everything is correct BEFORE turning on the power.
Keep the top blade guide assembly within 1/8" of the work piece at all times. Do not force the material
against the blade. Light pressure on the work piece will produce a smoother cut, and prevent excess friction, and
heating of the blade.
KEEP THE SAW BLADE SHARP. Very little forward pressure is required for normal cutting. Keep the workpiece
moving at a slow and consistent rate against the blade to ensure a smooth and accurate cut.
Avoid twisting the blade, by trying not to turn sharp corners. Remember, you must saw around corners.
Fig. 58
When using the machine for cutting metal (40, 60, 85,
115, 160, 220, and 335 SFM), push the shifter knob (A)
Fig. 58 all the way in, disengaging the clutch (B) from the
hub (C) of the pulley. An additional clutch (D) is located
inside the band saw. It must be engaged with the hub (E)
of the gear that transmits power through the gear box.
When pushing in on the shifter knob (A) Fig. 58, rotate
the lower wheel of the band saw to feel when the
engagement occurs.
Fig. 59
Fig. 60
With the longest belt on the inside groove of the motor
pulley (B) Fig. 59 and on the drive pulley (C), and the
small belt in one of the remaining three grooves of the
motor pulley and the corresponding groove of the gear
box pulley (E), speeds of 40, 60, 85, and 3000 SFM are
readily available. To obtain speeds of 40, 60, and 85
SFM, push the shifter knob (F) Fig. 59 all the way in, and
position the small belt on one of the three outside
grooves of the motor pulley (B) and the gear box pulley
(E).
Blade speeds of 115,160, 220, 335, and 3000 SFM are
available by simply interchanging the positions of the
motor pulley and the gear box pulley. Fig. 60 shows the
motor pulley (A) positioned on the gear box shaft and the
gear box pulley (B) positioned on the motor shaft. With
the long belt positioned on the inside groove of the
pulley (B) and the pulley (C), and the small belt
positioned in one of the remaining three grooves of the
pulleys (A) and (B) Fig. 60, speeds of 160, 220, and 335
SFM are obtained when the shifter knob (D) is pushed in.
To obtain a blade speed of 115 SFM, push in the shifter
knob (D), remove the long belt from the pulleys (B) and
(C), and place the small belt on the inside groove of the
motor pulley (B) and the inside groove of the gear box
pulley (A).
Except for the one speed of 115 SFM, both belts may be
left on the machine, regardless of the blade speed.
C
E
B
F
D
C
A
B
C
F
E
B
BLADE SPEED RPM
3000 WOOD CUTTING
115
85
40
C
A
B
BLADE SPEED RPM
115
160
220
3000 WOOD CUTTING
335