Page 205 - oxcatalog-2019

Diamond Blade Troubleshooting Guide

BLADE BORE CAUSES REMEDIES
OUT-OF-ROUND
1. Blade collar is not properly 1. Tighten the spindle nut with a
tightened, permitting blade to either spanner to make certain that the
rotate or vibrate on shaft. blade is adequately secured to
prevent rotation on shaft.
2. Blade collars are worn or dirty not
allowing proper blade clamping. 2. Clean blade collars, making sure
they are not worn. Tighten arbor nut
3. Blade is not properly mounted. properly.
3. Make certain the blade is mounted
on the proper shaft diameter
before tightening arbor nut. On
concrete saws, make certain the
pin hole slides over arbor drive pin.
Never depend on the drive pin to
actually drive the blade. A drive
pin is simply a safety measure to
prevent the blade from spinning on
its spindle should the nut become
loose.
UNDERCUTTING
STEEL Center 1. Abrading or wearing away of 1. Use as much water as possible to
the steel center faster than the flush out fines generated during
diamond segment is due to highly cutting or use blades with undercut
abrasive fines generated during protection. NOTE: Blades with
cutting. undercut protection are not always
the final answer to eliminating
undercutting. Are must still be
taken to provide sufficient water
to the steel center are immediately
adjacent to the segment. This is
especially important when making
deep cuts.

BLADE WORN 1. Shaft bearings on masonry or concrete 1. Install new blade shaft bearings or blade
OUT-OF-ROUND saws are worn, causing the blade to run shaft,as required.
eccentrically and wear out-of-round. 2. Tune engine according to saw
2. Engine is not properly tuned on concrete manufacturer’s manual.
saws, causing surges in blade rotation. 3. For large diameter blades it may be
3. Blade spindle hole is damaged from possible to rebraze segments to a
previous mismounting. new center.
4. Blade mounting spindle is worn. 4. Replace worn shaft or spindle bushing.
A groove may have been scoured on the 5. On a masonry saw, tighten the blade
mounting spindle as a result of previ- collar. On a concrete saw, make certain
ous blades spinning on the arbor. When that the drive pin is functioning.
a new blade is placed on such a worn
spindle, it seats improperly and runs ec- 6. Use proper blade specification.
centrically.
5. Blade slips on arbor shaft.
6. Bond is too hard for material causing
machine to ‘pound’ at regular intervals,
wearing one half of the blade more that
the other half.

The OX Book 2019 Edition 1 Page 205