I have a Chinese MX-210V mini-lathe and want to replace its spindle bearings. I haven't taken it apart yet, but I understand from perusing YouTube about this lathe that it uses common 30209 tapered roller bearings at both chuck and drive ends. (Please let me know if you know differently, or if you know of an angular contact bearing that would be better.)
When sourcing 30209 bearings, I see various suffixes of -A, -B, -C and -M for them from various manufacturers, but I can't find anywhere that tells me what they mean. They all look the same and all have the same specifications (near as I can tell). Can anyone enlighten me? Maybe tighter tolerances? Harder materials?
Thanks,
Greg
When sourcing 30209 bearings, I see various suffixes of -A, -B, -C and -M for them from various manufacturers, but I can't find anywhere that tells me what they mean. They all look the same and all have the same specifications (near as I can tell). Can anyone enlighten me? Maybe tighter tolerances? Harder materials?
Thanks,
Greg