Diamond Blades

Diamond BladesSONMAK

DIAMOND BLADESTROUBLESHOOTING

BURNING
CAUSE REMEDY
Insufficient coolant (water) at the cutting surface of a wet cut core bit or blade. Increase the flow of water and check for proper direction of the water to the cutting surface.
Insufficient cooling (air) Allow the blade to cool every few feet of cut by running it.
BLADE WILL NOT CUT
CAUSE REMEDY
Blade is too hard for material being cut. (Wrong spec.) Bond will not wear away to expose new diamonds. Choose a softer bond.
Material being cut is too hard. Dress or sharpen the blade with a soft concrete block or old abrasive wheel to expose new diamonds. If continual dressing is needed change to a softer bond.
Insufficient power to permit blade to cut properly. Check and tighten belts and make sure adequate horsepower is available for application.
SEGMENT LOSS
CAUSE REMEDY
On stone or masonry blades the material may not have been held firmly which allowed the blade to twist or jam. Material must be held firmly.
Overheating due to an inadequate supply of water.Look for burning or discoloration near missing segments. Provide adequate supply of water.
Undercutting which wears away blade core and weakens the weld between segment and core. Increase water supply and if material being cut is very abrasive switch to wear-resistant cores.
Blade is too hard for material being cut causing excessive dullness and the segment seperates because of impact, fatique or frictional heat. Use the proper blade specification for material being cut.
WORN OUT OF ROUND
CAUSE REMEDY
Worn shaft bearings on saw which allows blade to run eccentric. Install new bearings.
Engine not properly tuned which causes “hunting”. Tune the engine.
Blade arbor hole is damaged. If blade is in good condition the core may be re-bored.
Blade mounting arbor is worn or is the wrong size. Replace worn arbor busing or arbor shaft.
Bond is too hard for material causing machine to “pound” at regular intervals, thereby wearing one half of the blade more than the other. Choose a softer bond.
UNDERCUTTING
CAUSE REMEDY
A condition in which the steel core wears at a faster rate than the diamond segments. It is caused by highly abrasive material grinding against the core. The blade core should be equipped with undercut protectors or full radius segments.
ARBOR OUT OF ROUND
CAUSE REMEDY
Blade collar is not properly tightened allowing it to turn or rotate on shaft. Tighten collars.
Worn or dirty collars which do not allow proper blade clamping. Clean and replace if necessary.
MISMOUNTING
CAUSE REMEDY
Blade collars are not properly tightened or are worn out. Check tightness and replace collars if necessary.
SEGMENT CRACKS
CAUSE REMEDY
Blade is too hard for the material being cut. Use correct blade with a softer bond.
LOSS OF TENSION
CAUSE REMEDY
Blade is used on amisaligned saw. Check for proper saw alignment.
Blade is excessively hard for the material being cut. Correct bond spec.
Material slippage causing blade to twist. Maintain a firm grip on material while cutting.
Undersize or mis-matched blade collars. Minimum 3-7/8″ – 4-1/2″ on concrete saws, 6″ Minimum on blades over 30″.
Blade used at improper RPM. Check shaft RPM.
Improper mounting on arbor shaft allows collars to bend blade when tightened. Make sure blade is securely on arbor shoulder until outside flange and nut are firmly tightened.
EXCESSIVE WEAR
CAUSE REMEDY
Using the wrong blade spec. on highly abrasive materials. Change to a more abrasive resistant bond.
Lack of sufficent coolant to the blade often detected by excessive wear in the center of the segment. Make sure water supply system is functioning properly.
Wearing out-of-round accelerates wear. Usually caused by bad bearings, loose or worn “V” belts. Replace bad bearings or worn “V” belts.
CORE CRACKS
CAUSE REMEDY
Blade is too hard for material being cut. Change to softer bond.
Excessive cutting pressure, or jamming or twisting of the blade. The saw operator should use a steady even pressure without twisting the blade in the cut.
Overheating through inadequate water supply or not allowing a dry blade to intermittently cool down. Use adequate water on wet cutting blades and allow adequate air flow on dry blades.
UNEVEN SIDE WEAR
CAUSE REMEDY
Insufficient water, generally on one side of blade. Make sure water is being distributed evenly on both sides of blade.
Equipment problem which causes blade to wear out of round. Replace bearings, worn arbor shaft or misaligned spindle.
Saw Head is misaligned. Check saw head alignment for squareness both vertically and horizontially.
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