Will a 13mm bearing fit on a 1/2" pipe?

[Ncrazyballa]

im ordering linear bearings so the size given is the size of the hole im assuming. the bearing size is 13mm which = .51" so technically it should fit the pipe and off by a hundreth. But i wanted to make sure and run it by you guys before i puchased bearings.

[ger21]

A13mm linear bearing will not work on a 1/2" shaft.

[Ncrazyballa]

A13mm linear bearing will not work on a 1/2" shaft.

ty for your response. what is the reason? to big or to small or what size could work?

[Bubba]

1/2" pipe has an od of .840 inches and even if it was the right "nominal" od, the finish would NOT be good enough for this application.

[ger21]

You need to use hardened 13mm shafts. That's the only thing 13mm linear bearings will work on.

[Ncrazyballa]

okay thanks for the responses, i guess ill have to spend some more on the right hardware...and i think 13mm hardened shaft might be to thin/weak for my size machine also (30"x30"x20") correct?

[grego85]

okay thanks for the responses, i guess ill have to spend some more on the right hardware...and i think 13mm hardened shaft might be to thin/weak for my size machine also (30"x30"x20") correct?

13mm is an odd diameter, I'd recommend sticking with something more standard. I see Thomson sizes as 10,12,16,20mm... for metric. Or go with inch size, 3/4" maybe.

Size wise, it depends what your loads are and how they are supported. Are you supporting them only on both ends? Check the deflection over 30". Or will they be full supported throughout the length?

As ger mentioned you need to use hardened shafting with linear bushings for them to work properly.

[handlewanker]

Hi Ncrazyballa, perhaps if'n supplied a sketch of your proposed machine design you would get a more detailed response as to what you can and can't do.

Just by reading your request re the linear bearing/pipe set-up indicates you are totally unknowledgeable of engineering requirements for materials etc.
Ian.

[grego85]

Hi Grego85, perhaps if'n supplied a sketch of your proposed machine design you would get a more detailed response as to what you can and can't do.

Just by reading your request re the linear bearing/pipe set-up indicates you are totally unknowledgeable of engineering requirements for materials etc.
Ian.

I'm confused, I merely offered some suggestions to the OP above regarding shafting.

I'm not the one building a machine, I believe your intention was to address NCrazyBalla?

[handlewanker]

Hi, apologies, misread the heading.....duly corrected.
Ian.