I was looking at roller needle bearings to use in wheels. I didn't realize, believe it or not, that many of the heavy-duty casters come with needle bearings. Cool, saves time and $ :-)
So, to double check-- with a ball bearing, the shaft is locked into the bearing with a locking collar or otherwise. But with needle bearings, there is no inner raceway, the rollers are left exposed. So, if the ID is 1", can I just slip a 1" carriage bolt through and bolt the caster to whatever surface I need it hanging off of? Or is there a press fit of sorts with the rollers?
thanks! -Bernard Arnest