Design Checking

[picksbendy]

Hi Guys,
I'm a total newbie to machine design and i've been reading and researching about bearings fitting and mounting methods and which i came up with this design i have as a cam follower block.
I'm confused if this is the right way for the bearing assembly as well as, will the bearing 6205 be strong enough to hold the shaft in vertical position if bearing 6816 act as cam follower (pressure may be 30 psi minimum)
hope that my explanation is understandable.
well, a senior here pointed that i must use 2 bearings (6205 2pieces) but I'm thinking 1 should be sufficient.
I attach my drawings together and hope to get some guidance and advice ya.

 

[caoimhin1]

You need to post the files as PDFs. Not everyone has the required software.

 

[picksbendy]

Thanks for pointing that out caoimhin1.

here's the pdf file.

 

[caoimhin1]

You need more than one bearing to support the stub shaft. As drawn, when a radial load acts on the cam (6816), the 6205 will be subjected to severe misalignment. At best this results in reduced lifetime. At worst it results in broken cage, grease purge, noise, notchiness.
Why not simplify things by using a cam foller bearing such as:

http://medias.ina.de/medias/en!hp.ec.br/KR..-PP;bRxfr6D_gar9

You just need to bolt it to the frame.

 

[caoimhin1]

Also, why do you need the 6816 bearing? I don't think its necessary.

 

[diskullman]

Part 2, why do you need the 6205 if you're going to use the 6816 on the roller? Why not 1 piece, solid mount?

Russell Giuliano

 

[Spud6414]

Not enough information. As drawn I agree with caomhin1. With out more specifics on what type of cam and what it does all I can say is that from a mechanics standpoint, it is job security.