Lapidaryforum.net
Gadgets, Gizmos, and Dohickeys => Fixing, Modifying and Refurbishing your Lapidary Equipment => Topic started by: kent on December 15, 2018, 10:20:00 AM
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I'm in the middle of replacing the oil coolant for my Highland Park B-10 combo unit to water with Covington's #3 coolant additive. Anyone with this unit or one of Highland Parks small trim saws knows the top platform of the saw needs to be removed from its base to clean out the sludge pot that holds the oil. Four bolts and its off.
One thing led to another and I decided to replace the bearings in the arbor for the blade drive shaft. I thought a few photos might be of help to anyone else faced with this task. The shaft is a pressed fit in the arbor bearings. It can pressed out in control, or hold the arbor in a vice and tap out the shaft using a block of wood on the shaft tip so you don't deform the tip. Once the shaft is out, the bearings can be pressed or tapped out. My bearings did not have set screws but I would take a close look at the arbor sides opposite the bearing to make sure. Photos should give you an idea of why the bearings can't be installed past the ends...a machined sleeve is between the bearings. My bearings are for 5/8" shaft (.62) x 1 3/8" OD (1.37) x 11/32" wide. I order new ones through McMaster-Carr.
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Nice post.
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I'm curious how the conversion to water from oil works. My attempts at using water even with additives, resulted in rust if not drained daily. I'm not that diligent so I run oil in my 8" trim saw. My 6" saw I lower the water below the blade and let the rest evaporate in New Mexico's dry atmosphere. I hate rust even more than I dislike cleaning oil off of my work.
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I am impressed with the condition of your B-10. Very nice, looks like it is only a few years old, but we all know better than that!
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The top photo was taken after I cleaned and refinished the unit back in 2009. Since then I have replaced the original wheels with diamond resin wheels and an expano drum. Its still clean but not quite like the photo. That's pre usage...
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