Band Saw Trouble Chart

**Band Saw Trouble Chart**
Problem	Probable Cause	Solution
	Incorrect blade Band tension too high Excessive feed Incorrect cutting fluid Wheel diameter too small for blade being used Worn or chipped pressure block (back-up guide) Blade rubbing on wheel flanges Teeth in contact with work before starting saw Side guides too tight	Teeth too coarse. Check your cutting chart * Reduce band tension. See Machine Operator's Manual Reduce feed pressure Check your coolant * Use thinner blade and lower speed Check pressure block. Replace if worn Adjust wheel alignment Allow 1/2" clearance before starting cut See Machine Operator's Manual
	Blade teeth inverted (backwards) Improper break-in period Hard spots in material (like scale) Material work hardened (check for hardness and adjust feed) Improper cutting fluid or mixture Speed and feed too high	Install blade correctly Reduce feeds and speeds during break-in period in accordance with manufacturers' recommendations Check material for actual hardness - hard spots like scale or flame cut surfaces Increase feed pressure Check your coolant * Check your cutting chart *
	Teeth dull Over or under feed Improper pitch blade Cutting fluid not applied evenly Incorrect blade (too many teeth per inch) Guides worn or loose	Use new blade Check your cutting chart * Check your cutting chart * Adjust coolant nozzles Check your cutting chart * Tighten or replace guides
	Over feed Lack of band tension Tooth set damage Loose guide arms or set too far from work	Check your cutting chart * Check Operator's Manual for correct tension Check material hardness Adjust arm as close to work as possible - tighten and align. Check guide
	Improper or lack of cutting fluid Wrong coolant Excessive speed or pressure Incorrect blade (wrong pitch)	Check your coolant * Check your coolant * Reduce speed or pressure. Check your cutting chart * Check your coolant *
	Incorrect feed and/or speed Incorrect blade (wrong pitch) Saw guides not adjusted properly	Check your cutting chart * Check your cutting chart * Adjust or replace saw guides
	Indexing out of sequence Material loose in vise	Check for correct indexing sequence (head rise) Check hydraulic pressure
	Feed pressure too high Tooth lodged in cut No cutting fluid or incorrect coolant Hard spots, scale, inclusions, etc. Incorrect blade (wrong pitch) Work spinning in vise; loose "nest" or bundles Blade teeth running backwards	Reduce feed pressure and/or speed. See your cutting chart * Never enter same (old blade), cut with new blade Check your coolant * Check hardness. Descale and/or anneal if necessary Check your cutting chart * Check hydraulic pressure; be sure work is firmly held Reverse blade teeth, turn inside out
	Insufficient blade tension Incorrect blade (back too soft) Incorrect feed (excessive) Back-up guide frozen in position, damaged, or worn off Guide arms too far apart, cocked, worn or loose Blade rubbing on wheel flanges	See Machine Operator's Manual for correct band tension If using hard back blade, switch to a variable tooth Reduce feed pressure. See your cutting chart * Free pressure block and realign; if worn, replace (never regrind) Move arms close to work as possible Adjust wheel alignment
	Dull or damaged blade Incorrect feed and/or speed Lack of band support Insufficient band tension Incorrect pitch blade	Replace with proper blade Check your cutting chart . Adjust until noise disappears Set guide arm properly - close to work as possible Check Operator's Manual for correct tensions Check your cutting chart
	Saw guide inserts or roller are riding on teeth Insufficient blade tension Incorrect blade (width of blade incorrect) Hard spots Back-up guide worn	Check table and Operator's manual for correct blade width Check for correct blade tension Check your cutting chart * Check material hardness Replace back-up guide
	Band binding in cut Side guides adjusted too tight Work not held firmly Incorrect (or lack of) cutting fluid	Check table and Operator's manual for correct blade width Check for correct blade tension Check your cutting chart * Check your coolant *
	Incorrect blade Incorrect feed or speed Improper (or lack of) cutting fluid	Check your cutting chart * Check your cutting chart * Check your coolant *
	Material loose in vise Incorrect blade (wrong pitch)	Check hydraulic pressure Check your cutting chart *

Note: By far, the most common reason for sawing problems is incorrect feed and speed for the blade being used and the material being sawed. Since this is particularly true of low cost, economy blades you can avoid troubles by using only the proper top quality blades.

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Band Saw Trouble Chart

Band Saw Trouble Chart

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