For information on any USA made wood working tool, like Rockwell/Delta Unisaw; suggest you visit the
Vintage Machinery site. They also have a sister discussion forum,
Old Wood Working Machines or OWWM.ORG. You won't find another place with the same depth/breadth of information on the old table saws.
You will need to register and join OWWM site to fully access the forums and unlock all the discussion groups.
+1 The Rockwell Contractor saw is not the Unisaw
Here is a random Rockwell contractor saw:
They sold 8" and 10" versions.
Here is a random old Unisaw:
And let us not forget the Unisaw Jr:
How to know if Bearings need replaced?
- Bad bearings make extra noise: rumbling, whining, screeching, grinding, etc
(Don't be confused by bad/worn/old belts)
- When you turn the arbor shaft or motor shaft by hand, failing bearings will not feel smooth. Will feel rough or sort of like sand is inside.
- The shaft won't turn.
How bad is Jetloc fence?
IMHO - Depends on your patience level?
It gets job done when properly adjusted.
Making small changes, and hard to read scale make use more difficult than most modern fences.
Also can find them abused or damaged that hampers proper operation. Often damage or poor adjustments to clamping mechanism will not properly lock down your setting. Not uncommon to find bent fence tubes on abandoned machines, as folks think they are handles for picking up the saw (wrong!).
Replacement parts are hard to find, and can be expensive in used market.
This all adds to the negativity posted on the fence.
Here is nice LJ Blog that summarizes Table Saw very well.
https://www.lumberjocks.com/knotscott/blog/46865
Best Luck finding a saw!