| Erratic Cuts | ||
Description | Probable Cause | How to Correct |
Material is cut in an irregular manner. Stock "snakes" through the machine. | Material is not held tightly. | Check the pressure bar height. Set the yield to 1/8". |
Check the pressure rolls for play. Repair or replace. | ||
Check the tops of the feed chain for wear. There should be less than .040" flat on top of Pyramid. | ||
Check the pressure bar for level. The pressure bar should be parallel to the feed chains. | ||
Material is being pushed. | Check for slivers in the machine. Clean the machine. | |
Check all pressure rolls for turning. Repair or replace. | ||
Feed chains are not tracking correctly. | Check for slivers in or under the feed chains. Clean the machine. | |
Check the feed chains side to side for flat. Replace the feed chains and race. | ||
Check for wear or alignment of the front cams of the chain race. Replace the feed chains and race. | ||
Check the drive cam for wear or alignment. No more than a 1/16" gap should be between the link and cam tooth. Align or replace. | ||
Check the feed chain length. The chains should hang the same under the machine. Replace the feed chains and race. | ||
Rough cut on stock. | Saw blades not running true. | Check blade for high teeth. Changing the saw blade should change the cut. |
Check for dirt between the saw collars. Clean the saw collars and the saw blade. | ||
Check for nicks in the saw collars. Repair or replace. | ||
Check the inner saw collar with a dial indicator, a . 003" maximum run out is recommended. Repair or replace the collar and bearings. | ||
Check the outer saw collar for dish. There should be .005" dish in the center of the collar. | ||
Saw blade moving or being deflected. | Check for slivers or pitch build up around the saw blade. Clean the machine. | |
Check the kerf of the saw blade. A 3/16" kerf is recommended. Thinner blades can be deflected by the material. | ||
Check for end play on the inner saw collar. The inner saw collar should not move in or out more than .001". Replace arbor bearings. | ||
Check the saw lead. Both sides of the material should only show saw marks from the leading side of the blade (no heal marks). Adjust the saw lead. | ||
