delta/rockwell 6 x 48 belt sander lubrication

[toolmiser]

I picked up a stationary belt sander a few weeks ago for $40.00-no motor or stand.  I stripped a few coats of paint and gave it a spray can paint job.  I am in the process of putting it back together and am wondering where and if I should lubricate it, and if so  with what.

I've downloaded a couple manuals for it but nothing it mentioned of lubrication or maintenance.

Worse case I am going to oil and grease where I think is necessary and deal with results if it isn't right.  I know oil/grease and dust don't mix well.  

Thanks.

[Stwood_]

Mine had all sealed bearings on the rollers.
Might oil the belt tracking do-dads so they will turn easier and keep them rust free.