KMT C 370 SA-V, Operator'S Manual & Parts List

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10
Blade Coming Loose
In the unlikely event that your blade comes loose occasionally or frequently, please read the following.
Installing the blade correctly is the most important place to start, but there may be a combination of factors
involved so we'll try to cover all of them.
Follow correct blade selection. If the proper blade for the work to be done is not selected, excessive vibration will
occur, and if the blade wasn't properly installed initially, vibration will contribute to the loosening.
It is also important to make sure that all of the surfaces are clean and free of chips before you attempt to mount
the blade, otherwise you cannot properly tighten the blade.
Next you must be certain to put the spring washer on correctly, as illustrated, making sure the machined head of
the spindle bolt fits correctly into the spring washer. The spring washer is what keeps the spindle bolt tight.
Next make sure that the backlash is removed between the drive pins and the holes in the blade. The holes must
be larger than the pins or you wouldn't be able to get the blade on, and you must therefore remove any backlash.
If you don't, the machine will do it for you (violently) when the blade contacts the workpiece, and you may get
damage.
Please note that it is not necessary to use excessive force to tighten the spindle bolt. The spring washer is what
does the work.
Blade Direction & Tightening
You will note that the blade rotation is the opposite of inexpensive pivoting-type cold saws. For the experienced
machinist, you will recognize the concept of ‘climb cutting’.
The rotation of our machine causes the blade to force the workpiece down, into the table top. Opposite rotation
would allow the sawframe to self-feed and/or lift the workpiece.
CAUTION: Operating this drive in the wrong direction will cause damage to the gearbox!
Also note that the bolt has to tighten in the opposite direction that the spindle turns. The reason is because the
startup torque of the drive is such that if you have it tighten in the same direction the startup torque would begin to
loosen it.
Vise Adjustment
The vise assembly adjusts laterally in the front "T" slot to allow clamping support as
close to the blade as possible. This is important for minimum vibration while
sawing. Adjust by loosening adjustable handle and position as desired.
Adjust the anti-burr device on the cutoff side of the blade so the device supports the
workpiece as closely to the blade as possible. Note that the disc springs ensure a
constant clamping on the material, despite the materials' irregular shapes.
BLADE CLEANING BRUSH
Proper utilization of the blade cleaning brush will keep chips from being carried
around in the teeth of the blade and re-entering the cut. This can cause blade
breakage and poor blade life.
The blade cleaning brush should be adjusted so the tips of the brush are just lightly
riding on the gullets of the teeth. If the brush rides too hard against the teeth, the
brush will wear prematurely.
Adjust brush assembly as illustrated at right, with hex wrench as shown.