The bearings I have are old brass sleeve bearings with grease nipples, the
shaft is 1.5". The bearings are hefty and about 3" long. Do you think they
will be fine? How true should they be to the shaft. when everything is loose
the bearings spin freely on the shaft but once I tighten the bearing blocks
down to the framework there is a bit of drag. This is do to the slight
warping of the framework after welding. I can still easily turn the shaft
with one hand on the shaft though.

"Ken Cutt" wrote in message
...
habbi wrote:
Thanks, I have it set-up for 500 rpm and it seems slow, I will change
the
spindle sheave to a smaller one to give me a speed in your recommended
range.

"sawdoc" wrote in message
oups.com...

Unless your saw is very thing (less than 0.125") the go for a rim speed
of about 6000-8000 ft/minute. (790 rpm - 1050 rpm).

Bruce Lehmann
TKT Engineering
www.thinkerf.com




Keep a watch on you bearing temps . Some old mandrels just will not
handle high speed for long . You sure do not want to wipe one out with a
29 inch blade spinning right close to you . Luck
Ken Cutt