SYMPTOM
|
CAUSE
|
REMEDY
|
Excessive wear
|
Using the wrong diamond blade on highly
abrasive material (example: glazed tile blade
on concrete block).
|
Consult a dealer or manufacturer for the
proper blade specification for abrasive
material
|
| |
Lack of sufficient coolant to the diamond
blade. Often detected by excessive wear in
the center of the segment
|
Clean up water system. Make certain water
pump is functioning properly.
|
| |
Wearing out of round accelerates wear.
Usually can be caused by bad bearings, worn
shaft or using a blade too hard for the
materials being cut
|
Check bearings and arbor. If worn, replace
with new parts before installing another blade.
|
| |
Insufficient power caused by loose V-belts,
inadequate voltage, or improper RPMs
|
Tighten belt. Replace worn belts. Check
voltage. Use proper size extension cord.
|
Cracked core
|
Diamond blade is too hard for material being
cut.
|
Use correct diamond blade with softer bond
|
| |
Excessive cutting pressure, or jamming or
twisting the diamond blade in the cut can
cause the blade core to bend or flex. When
subjected to extreme stress and metal
fatigue, the blade's steel core will eventually
crack.
|
The saw operator should use steady, even
infeed pressure, and be careful not to twist or
jam the diamond blade in the cut
|
| |
Overheating through inadequate water supply
or improper use of dry cutting blades.
|
Use adequate water to cool wet-cutting
diamond blades (for example, 2-5 gallons
per minute for concrete saws). Allow
adequate airflow around dry cutting diamond
blades to prevent overheating. NEVER USE A
DIAMOND BLADE WITH A CRACKED CORE!
|
Undercutting
|
Undercutting is a condition in which the steel
center wears faster than the diamond
segment, especially in the areas where the
segment and core are joined. The condition
is caused by highly abrasive material
grinding against the diamond blade during
the sawing operation. Usually materials
containing sand are responsible for this
condition, called segment loss.
|
The flow of swarf (abrasive cuttings) must be
distributed over a wider area, away from the
critical segment area with undercut retardant
segments or other types of undercut
protection specially positioned around the
steel center to change the pattern of constant
abrasion. Although successful in most
cases, undercut protectors do not provide
100% protection.
|
Uneven segment wear
|
Segments are worn on one side, reducing
side clearance. It is usually caused by
misalignment of the saw or a lack of sufficient
water on both sides of the blade.
|
Check saw alignment. Clean water systems,
making certain that water is properly applied
to the leading edge of the blade flanges.
Check to see if pump is supplying sufficient,
even water.
|
| |
Diamond blade is worn out of round due to
bad bearings, worn arbor or excessive dulling
condition.
|
Replace bearings or worn arbor as required.
|
