American Dental Accessories
2010-5-25u2002·u2002At the center of the turbine is the spindle (#1 in the diagram above), this is the shaft that spins. Inside the spindle is the chuck (#2 in the diagram above), this is a hollow tube that holds the bur, which of course does the cutting. As you can see in the diagram, the chuck has little slits at the end. These slits allow the chuck to compress as it moves forward inside the spindle to grip the ...
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