Hi,
those bearings should be a hand-push fit on the shaft. You may have to put the shaft in a lathe and use emery to bring it down somewhat. Don't whatever you do
allow the ballnut to come off, its a major PITA to fit it back on.
Craig.
How do you mount the BK/BF12 bearings on the Chinese RM16 Ballscrews (see attached pic)? I do sand the shaft lightly and apply some lubricant but I find it quite difficult especially on the Y,A and X axis which are quite long. Searching I didn’t find any suitable tool.
Any tips?
Thanks
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Nicolas
Hi,
those bearings should be a hand-push fit on the shaft. You may have to put the shaft in a lathe and use emery to bring it down somewhat. Don't whatever you do
allow the ballnut to come off, its a major PITA to fit it back on.
Craig.
They should be a just slide fit, if not someone messed up with the size of the shaft machining, the support Bearing end can be a tight fit as there is no clamping of the Bearing to the shaft, so measure the Bearing mounting area with a Micrometer to get the size and post what it is.
Mactec54
Thank you guys, now I feel much better because I thought I was missing something. It’s true in the past some bearings just slide on but the majority are PITA however now I know what’s going on I will write on my order next time the shafts to be machined properly.
Craig I know about the ballnut not to remove, thanks.
mastec54 for the double bearing (the one at the left in my picture), the shaft is 0.475” and the bearing ID is 0.464”. The other end, the smaller bearing, the shaft is 0.394” and the bearing ID is 0.384”.
Many thanks
Nicolas
Thanks mastec54, yes the bearing on the left side of the shaft (where the motor is installed) is a double bearing and the other end is a smaller bearing to support the shaft end.
I measure with a digital caliper
Nicolas