Tim Gunter
02-13-2014, 8:32 AM
I picked up an old 20" Woodtek (PBS) bandsaw from a company that went out of business. They used a 1/4" blade for their purposes and I purchased a Lenox 1" CT and have yet been able to get the blade to stay on the wheels. Here's what I did so far:
Set the upper wheel for parallel and the bottom wheel to be coplanar.
Changed the tires to urethane (this unit has flat tires, no crown)
Installed new bearings
Here's what happens, I bring the tension up enough to be tight on the wheels and spin by hand. The blade moves out to the outer edge of the wheels and hangs over by 7/16". I then tilt the upper wheel out to move the blade back onto the wheels but turning it about half a turn does not move the blade. If I de-tension at that time and move the blade back onto the center of the wheel and re-tension the blade runs off of the back of the wheels about 1/8" overhang. If I then move the upper wheel in to move the blade back onto the wheel, it moves some then off the front.
I can't make the blade stay on the wheels.
This bandsaw uses metal stamped wheels, perhaps that's the issue?
Thought perhaps the coplanar angles need to be adjusted somehow?
Any help would be appreciated.
Set the upper wheel for parallel and the bottom wheel to be coplanar.
Changed the tires to urethane (this unit has flat tires, no crown)
Installed new bearings
Here's what happens, I bring the tension up enough to be tight on the wheels and spin by hand. The blade moves out to the outer edge of the wheels and hangs over by 7/16". I then tilt the upper wheel out to move the blade back onto the wheels but turning it about half a turn does not move the blade. If I de-tension at that time and move the blade back onto the center of the wheel and re-tension the blade runs off of the back of the wheels about 1/8" overhang. If I then move the upper wheel in to move the blade back onto the wheel, it moves some then off the front.
I can't make the blade stay on the wheels.
This bandsaw uses metal stamped wheels, perhaps that's the issue?
Thought perhaps the coplanar angles need to be adjusted somehow?
Any help would be appreciated.