woodchucker wrote:
On 1/9/2017 7:16 PM, tdacon wrote:
Hello, all -

We've got a Rockwell 13" woodworking planer, about 30 years old,
model 22-650, whose lower rollers need to be rebuilt and we don't
know how to dismantle them. This is a link to some pictures on
PhotoBucket that show what I'm talking about:
http://tinyurl.com/gnfcbbf The rollers themselves roll on shafts that
pass somehow through
through-holes in either side of the base casting. What you see from
the outside of the castings on either side are adjustment fittings
that are slotted for a screwdriver blade with a hole drilled axially
and tapped for what seems to be a 5mm metric machine screw with a
fine thread, maybe 0.8 pitch. The fittings are eccentric and you
adjust the height of the rollers by turning the fittings with a
screwdriver and then tightening down a set screw to keep the
adjustment. The rollers themselves seem to be rotating on
through-shafts that look to be around 9/16" to 5/8" in diameter or
so. The manual is silent on the issue, and the exploded drawing
shows the slots in the base for the rollers, but there's no exploded
view of the roller assemblies. We need to get them out and find out what
kind of bearings the
rollers roll on, replace the bearings, and reinstall them. We
threaded a machine screw into one end of one of them over a big hex
nut and some wide washers, and then carefully tightened it down. The
shaft came towards us a little way (shown in one of the pictures)
and then came to a stop. Possibly a slide hammer would do the job,
possibly a pin punch and a lump hammer would drive them out, but
we're not going to start banging on this thing until we have some
confidence that we're doing the right thing. Ideally we'd like to
hear from someone who's done this disassembly and can tell us how to
proceed, or who has done the job on a similarly-designed tool.

I'm posting this on both the old woodworking machines web site and
the woodworking/metalworking internet newsgroups.

Thanks for any help you can offer,
Tom

Without first hand knowledge so you understand.
I'll bet those eccentric nuts are also holding the shaft in place, so
remove the slotted eccentrics, both sides and the roller should then
be unsupported.you may have to push he roller into one of the
eccentric's former spots to get the other end out. But that should
release the roller.

I'm betting that the eccentrics have a groove around the outside that the
set screw rides in . Get one or both eccentrics out and the center shaft
should slide right out . Another thought , the eccentric might be machined
on the ends of the center shaft , easier to keep both sides the same height
..
--
Snag