Troubleshooting Guide Band SawsProblem / Solution ProblemReasonSolution Premature and excessive tooth wear Feed pressure too lightIncrease feed pressure Band saw too slowAdjust band speed Insufficient coolant, improper coolant mix, or wrong coolantApply proper coolant for type material being cut, check flow of coolant Improper tooth selectionCall Greenfield Industries for additional information Feed pressure too highCall Greenfield Industries for additional information Guides hitting teeth alignmentCheck blade Improper break-in with new bandFeed should be reduced for first few cuts Tooth Strippage Teeth too coarse for material thicknessSelect finer pitch Material not securely visedAdjust clamping pressure Insufficient or improper coolantApply proper coolant for type material begin cut, check flow of coolant Excessive feed pressureReduce feed pressure Band speed too slowIncrease band speed Chips loaded in gulletReplace or adjust chip brush Finished Surface too Rough Improper blade selectionSelect finer pitch Band speed too slowAdjust band speed Feed rate too highSlow down feed rate Improper coolant for type of material being cutApply proper coolant Premature Blade Breakage Thickness of blade too heavy for diameter of wheelsSelect thinner blade Band tension too highAdjust tension Improper speedCall Greenfield Industries for additional information Excessive feed pressureReduce feed pressure Brittle weldIncrease annealing period, decreasing heat gradually Saw out of alignmentGet machine properly re-aligned Improper coolantApply proper coolant for type of material being cut Band wheels wornReplace wheels Cutting Rate too Slow Incorrect band speedAdjust band speed Incorrect feed pressureAdjust feed pressure Blade pitch too fineSelect coarser pitch blade Gullets Loading with Chips Excessive cutting speedReduce cutting rate Blade pitch too fineSelect coarse pitch Chip brush not workingReplace or adjust chip brush Insufficient coolant, improper coolant mix, or improper coolant Apply proper coolant for type of material being cut, check flow of coolant Band SquealsFeed rate too slowIncrease feed rate Insufficient coolant flowCheck coolant flow Belly Shaped Cuts Blade tensionCheck blade tension with tension meter Guide arm is too far from work pieceAdjust guides closer to work piece Blade pitch too fineSelect coarser pitch blade Excessive feed forceReduce feed force or feed rate Blade Leading in Cut Excessive feed force or feed rateReduce feed force or feed rate Possible hard inclusionUse cutting oil to reduce leading Chip brush not workingReplace or adjust chip brush Blade tension too lowCheck blade tension with tension meter Band Develops Twist Wrong width for radius being cutSelect a narrower blade Binding in cutAdjust blade tension Saw guides too close to work pieceAdjust saw guides further from work Band Stalls in WorkFeed pressure too greatReduce feed pressure Improper blade tensionAdjust blade tension Blade pitch too coarse for material being cutSelect finer pitch blade Burring or Mushrooming of Back Edge Improper blade tensionAdjust blade tension Excessive feed pressureReduce feed pressure Blade pitch too fineSelect coarser pitch blade Improper guide adjustmentsAdjust guides Band ScoringBand has side wear or groovingCheck saw guide inserts for wear and replace Improper alignment of saw guidesAdjust guides so they are square to front vise Worn guidesReplace guides Blade Not Running True against Saw Guide Backup Bearing Clicking noise against the saw guide backup bearing indicates there is a burr on the back edge of the band Remove burr on the band Weld not in proper alignmentReweld blade straight and true Saw guide backup bearing wornReplace Improper blade trackingCheck band wheel alignment Band Develops Negative Camber Band is riding on saw guide backup bearing too heavily Adjust band alignment on top and bottom wheels Check band wheel alignment Band Develops Positive Camber Excessive feed forceReduce feed force Poor tooth penetrationSelect a coarser pitch blade for increased tooth penetration Saw guide is too far from work piece or no lockedAdjust saw guides closer to work piece Blade VibrationGuides poorly adjustedCheck guide adjustments Improper band speedIncrease or decrease band speed Low blade tensionIncrease blade tension Feed rate too lowIncrease feed rate Blade pitch too coarse for material being cutSelect variable pitch blade Work piece not properly securedAdjust clamping pressure Chip WeldingExcessive feed pressureReduce feed pressure Excessive cutting speedReduce blade speed Chip brush not workingReplace or adjust chip brush Insufficient or improper coolantApply proper coolant for the type of material being cut, check coolant flow
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