Band Saw: Blade slips off the wheel
A damaged rubber tier, worn wheel bearings, loose blade tension or a dull saw blade can cause the blade to slip off the wheel. Check blade tension by pressing in on the side of the blade using a gloved finger. Tighten blade tension if you can easily push the blade in more than 1/4-inch.
If blade tension is okay, a dull saw blade could be causing the problem. If the saw blade is dull, you have to push the work piece with more force to move it through the cutting area. The extra force could push the saw blade off the wheel. Replace the saw blade if it's dull.
If the saw blade is sharp and the blade slips off the wheel even when you only use light pressure to push the work piece through the cutting area, check the rubber tires for damage or wear that could lead to the blade slipping off the wheel. Replace worn or damaged rubber tires.
If the rubber tires are okay, manually spin the wheels and check for wobble. If a wheel wobbles while you spin it, replace its bearings because they're no longer supporting the wheel enough to keep it from wobbling.
Replace the band saw rubber tire
The band saw rubber tires fit over the upper and lower wheels and grip the band saw blade to prevent slipping. Examine the band saw rubber tires regularly and replace worn or damaged tires.
Replace the band saw wheel bearings
The band saw wheel bearings support the wheels and allow the wheels to spin freely on the wheel shafts. A wheel has bearings on each side. Examine the bearings if a wheel isn't spinning true. Replace both bearings on the wheel even if only one bearing appears damaged.
Replace the band saw blade
The band saw blade becomes dull with use. Cutting hard wood or metal hastens blade dulling. The band saw blade is dull when you must apply significantly more than normal force to push the piece you're cutting through the blade. Replace the band saw blade when it's dull or damaged.
If the motor runs but the blade doesn't move, it could be that the drive belt is broken. Here's how to replace it.
If the band saw tire has stretched or is broken and no longer stays on the wheel, use these steps to replace the tire.
Learn how to use a multimeter to check for wiring problems in an appliance that's not working