Post by TheRock on Aug 9, 2019 23:02:30 GMT -5
Some of you may recall me changing Bearings in my BD-10 I didn't pay attention to the type of bearings That I purchase for replacements. The original set that I replaced were actually bad because of the Dirty Oil I could feel grit in them. This time it was because of the wrong type of bearings. The Saw's Pulleys are 1:1 Gear ratio as both Pulleys are 2". The Motor RPM is 1725 so the Blade turns at that speed also. Well I purchased a Set Of Timken Bearings from AMAZON and they were only rated at 1060 RPM the ones I picked this time had a rating of 18,000 RPM. I also decided to modify the ARBOR this time. Have you ever wonder how much grease is actually in a Bearing? I am not a fan of Pre Lubricated anything. In my 37 Years as an HVAC Contractor I replaced more shafts Bearings and Motors than you can shake a stick at. There are 2 Bearings that are double shielded which means theoretically they will keep the lubrication in, and the contaminants out. (don't believe it)! I Drilled a hole in the Arbor Tapped and Installed a Zerk fitting I also removed the Shield on the Inward side and pumped it full of Wolfs Head Heat Proof Grease. This will keep the Bearings full of grease and I got the blessings of MK's Chief Lead Engineer. And then of course we talked about the other needed improvement that the saw needs like a Crank type wheel with indexing #'s so you can work the Crossfeed on the saw and count the turn's that you make to maintain between 3/16" and 1/4" inch to cut the cabs which on my saw 5 to 6 turns. There is also the need for a NOB on the power feed shut off instead of a Stupid Allen Screw. I installed a New Blade on the saw and this one is the New Style from BD and it looks serrated, has anyone tried one of these blades and are they better? Here are some pics time will tell, I had about 400 cuts on these bearings. Will see haw long these bearings last.