Spindle ID
Grizzly's specs have the spindle ID listed at 1.625"
This is true only on each end the spindle
My actual through spindle ID is 1.570"
Looking from the front of the spindle only 4 1/2" is machined to the 1.625" ID.
There is approx 12" in the center of the spindle that is rough and only has an ID of approx. 1.570"
Looking from the back only 3" is machined to 1.625"
The remaining ID is 1.570"