From: muratlanne@gmail.com   
      
   "Bob La Londe"  wrote in message news:108l58e$8ri4$1@dont-email.me...   
      
   > or if you prefer not to, skateboard wheels are a great   
   option for lots of applications in DIY industry.  The bearings for   
   skateboard wheels are pretty small, but they are pretty inexpensive even   
   in fairly high grades.  For the drive side just make a shaft journal to   
   match the OD size of the bearing.   
      
   Unless I totally miss the scale or the project and you are rolling an   
   oil drum sized tumbling chamber.  Now I bet skate wheels would work with   
   that too.  Just adjust frame for size.   
   ----------------------------------   
   Skate bearing field use report:   
      
   When I built my bandsaw mill I reused a previous smaller attempt's blade   
   guides, which used 608 skateboard bearings, 8mm bore (5/16"). The dealer   
   showed me how to disassemble, clean and grease them for longer life. At   
   first they worked but 50 MPH and 1000 lbs of blade tension (not directly on   
   them) wore them out quickly, sometimes in a day, leaving a trail of the   
   balls, seals, outer race and cage fragments in the sawdust. The saw kept   
   cutting normally with one intact guide.   
      
   The upgrade used R8s, 1/2" bore. Cheapies from Amazon lasted in the 2"   
   diameter side (top) roller guides that deflect the blade 1/4" downward to   
   stabilize it against twisting it but not in the back side bearings that   
   support cutting pressure at 50 MPH , from me leaning on the carriage handle.   
   A change to $5 R8 bearings from an industrial supplier cured that.   
      
   I know the blade speed because I repaired and mounted the crashed   
   motorcycle's speedo. The blade runs on the tires.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)