How it works
A floor-standing woodworking bandsaw in two views: the whole saw from the front with the wheel covers off, then the table close up, where the guides steady the blade above and below the wood.
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How the blade runs
The blade is one loop of toothed steel stretched over two wheels, each wearing a rubber tire. The motor turns the lower wheel through a drive belt. The blade tension handwheel raises the upper wheel to pull the blade tight, and the blade tracking knob tilts that wheel so the blade stays in the middle of the tire.
What holds the blade steady
Above the table, the guide post carries the blade guard, the upper blade guides and a thrust bearing: a guide either side of the blade and the bearing behind it. A second set of guides sits under the table. The table is bolted to the trunnion, which lets it tilt.
- Tension and tracking are two jobs: tension pulls the blade tight, tracking keeps it in the middle of the wheel.
Questions and answers
What are the main parts of a bandsaw?
A frame, two wheels with rubber tires, a blade looped over them, a motor and drive belt, a table, and blade guides above and below the table. Two controls on the upper wheel set the blade's tension and tracking.
What does the thrust bearing do on a bandsaw?
It sits just behind the blade. When wood is fed into the teeth, the back of the blade presses on the bearing, which takes the push and keeps the blade straight.
What is the difference between blade tension and blade tracking?
Tension is how tightly the blade is stretched between the wheels; the handwheel sets it by moving the upper wheel. Tracking is where the blade rides on the wheels; the knob tilts the upper wheel until the blade runs mid-tire.
What is a trunnion on a bandsaw?
The curved support under the table. The table is bolted to it, and it lets the table tilt for angled cuts. A lock holds the angle you set.