|Forum topic by JAAune||posted 10-07-2016 05:29 AM||364 views||0 times favorited||5 replies|
10-07-2016 05:29 AM
Anyone else with one of these routers notice significant slop in the spindle? I recently replaced my Porter Cable with one so I could upgrade to the Precision Bits collet system and seem to have lost quality of cut. After investigation I found if I grabbed the spindle in my hand and tugged it back and forth I could move it enough to see some wiggle in the chucked up bit and feel a distinct clunking as the spindle moved.
My first thought was that I’d gotten a defective unit but with the warranty already voided (superPID conversion) I ended up taking it apart and placing shims around the upper bearing. There is several thousandths of slop between the upper bearing and its housing.
Since I’ve got more of these in the shop I tested another and discovered the same issue. Now I’m thinking Bosch simply determined they could cheat on the precision because the problem won’t be noticed unless the router is subjected to heavy cutting (as a CNC will do). The Porter Cable 892 spindle is far more solid. I can’t get any detectable play out of that. Unfortunately, the collets are prone to slipping and require far more force to open than a Precision Bits collet.
There’s always the Hitachi M12 option but I’ve never owned one and am not sure how good it is. A proper spindle is not on the radar since my aluminum frame machine is already put to the limits with a standard router and a better CNC is in the future.