Type of problem
Blade Worn out of Round
Shaft bearings are worn
Install new blade shaft bearing as required
Blade arbor hole is damaged from previous mismounting
Replace worn shaft or mounting arbor bushing
Bond is too hard for material, causing a "rounding" and wearing one half of the blade more than the other
Make certain that drive pin is functioning
Blade will Not Cut
Blade is too hard for material being cut
Select proper blade specification for mateial being cut
Blade has become dull as a result of being used on too hard a material
Tune engine according to manufacturer's manual
Uneven Segment Wear
Insufficient water(usually on one side of blade)
Flush out water system and check flow and distribution to both side of blade
Equipment defects cause the segments to wear unevenly
Replace bad bearings, worn arbor or misalignment to spindle
Saw is misaligned
Check saw head aligned for squareness both vertically and horizontally
Arbor Hole Out-of Round
Blade collar is not properly tightened, Permitting blade rotation or vibration on the shaft
Tighten the shaft nut with a wrentch to make certain that the blade is adequately secured
Blade collar is not properly tightened, Permitting blade clamping
Clean blade collars, making certain they are not worn
Blade is not properly mounted
Make certain the blade is mounted on the proper shaft diameter before tightening shaft nut
Ensure the pin hole slides over drive pin
Make sure that drive pin is in pin hole
Undercutting the steel center
Abrasion of steel center due to highly abrasive fines generated during cutting
Use as much water as possible to flush out fines generated curing cutting or use wear-retardant cores
Cutting through material into sub-base
Wear-retardant cores are not always the ultimate solution to eliminate undercutting
Provide an adequate water flow to the steel center area immediately adjacent to the segment
Segment Cracks
Blade is too hard for material being cut
Use a blade with a softer bond
Blade Wobbles
Blade runs at improper speed
Check for bad bearings, bent shaft, or worn mounting arbor
Blade collar diameters are not identical
Check blade collar discs to make sure they are clean, flat and of correct diameter
Blade is bent as a result of dropping or twisting
Make certain that blade shaft is running at recommended RPM to match tensioned speed of blade
Segment Loss
Overheating due to lack of water
Check water feed lines and make sure flow is adequate on both sides of blade
Steel center is worn from undercutting
Use sufficient water to flush out the cut
Defective blade collars are causing blade misalignment
Clean blade collars or replace
Blade is too hard for material being cut
Use proper blade specification for material being cut
Blade is cutting out of found, causing a pounding motion
Replace worn bearing
Improper blade tension
Ensure blade is running at correct RPM, blade is tensioned for correct RPM
Cracks in steel center
Blade flutters in cut as a result of blade losing tension
Tighten the blade shafter nut
Make sure blade is running at proper tensioned speed and taht drive pin in functioning properly
Blade specification is too hard for the material being cut
Use a softer bond to eliminate stress which create cracks
Bad blade shaft bearing
Replace blade shaft bearing
Loss of Tension
Steel center has been overheating as a result of blade spinning on arbor
Check water flow, distribution and lines and tighten the blade shaft nut
Steel center has been overheating from rubbing the side of material being cut
Make certain blade RPM is correct so the blade operates at its tensioned speed
Unequal pressure at blade clamping collars
Blade clamping collars must be identical in diameter and the recommended size
Improper blade specification: blade is too hard for the material being cut
Use a softer bonded blade to reduce operating stresses