Hi, I drew this quickly on deltacad and I wanted to ask you guros how do I mount this without having horizontal movement? I picked those bearings to ease of installment. If you guys have a better idea on bearings and how to keep it from sliding, I would greatly appreciate the forth knowledge.

Little info about the drawing: The 3/8" wall is to separate the mountd blade from the motor and or user for safety issues. The shaft sits on two pillow block bearings and at the end, there is a pulley attached to connect to the motor.

http://www.diuternity.com/wp-gallery/PRO_PHO/arbor_mounting.jpg

itwanabe, The application will dictate the bearings etc. Is this for a buffing wheel? (mostly radial force), arbor attached to disc grinder? (mostly axial force) If the axial force is relatively low, deep groove ball bearings might suffice. Mostly axial with some radial forces paired angular contact might work. Then you need to determine how much force and at what speed. Then there's accuracy, lubrication, vertical or horizontal etc.

You can buy stock pillow blocks with a fixed bearing on one and a floating bearing on the other. Generally, those are held in place on the shaft with a locking collar or snap-ring. Not very high-tech. Not really machine tool level stuff.

Give us a little more info and maybe we can help.

The arbor will have a saw blade attached to the end. I assume these will all be radial loads though.

I don't know about force but I know the supplied motor is a 1hp ~1000rpm. What do you recommend to hold the shaft in place other than the clips and collar locks? The clips- thats hard to install because I don't have a tool to cut a slit around the whole shaft. The collar locks- wouldn't that just get loose? I don't think that would be very reliable way to hold the shaft in place.

Do you have any photos or can you be more descriptive?

For something like this, it might be a good idea to use a stepped shaft with a threaded lock collar to completely eliminate the possibility of unwanted motion. This would not be nearly as simple as what you have suggested above but rarely is the ideal solution the easiest.

Scott

itwanabe, You might consider the Sealmaster Skwezloc shaft locking device. It clamps more accurately than typical locking collars with a collet type clamp built into the bearing assembley. They can be had in mounted/pillow block sealed assembleys.

maybe use a thrust bearing on the shaft end? end mounting could eliminate the need for a thrust collar or step, no?

http://filebox.vt.edu/users/lejr2/shaftmount.bmp

I couldn't find any sealmaster skwezloc.... but I found this at mcasters

http://www.mcmaster.com/param/images/mountedbearings/3730T21.gif

Only thing is, they are 66bucks a pop! These have two "double set screws" at the lip that can secure to the shaft for easy installation. Do you guys have any sites you can refer me to for these bearings?

LenMcC: I like your rework of my drawing a lot better than my original. The end mounting could use the PBB that I have pictured above this post. I was thinking that that the PBB could secure itself to the shaft, and like you said, eliminate the collar stop. Thank You!

Hi itwanabe, here you have a safety issue which if you're going to be mounting a saw blade is pretty lethal if it gets free.

When I was on the mines we had similar set-ups for conveyor belt drives.
In that application we had two plumber blocks, with self centreing bearings inside, flat pulley in the middle with the bearings on either side.

The bearings are locked to the shaft with a tapered sleeve that clamps to the straight shaft, no machining of the shaft required, and the bearings are lubed with grease contained in the housing, standard set-up.
Bearing suppliers wil have them in their cat & dogs.
Ian.

I actually have the safety issues already conjured and on paper=) I know the dangers of working with such blades and I thank you for the heads up!

I'm a pretty decent welder too, so I plan to weld slow sleeves/washers in conjunction with the bearings to prevent movement. I didn't know what kind of bearings to use is all. Now that I know, I have to made few modifications to my plans!

no problem. this is a very relevant thread for me. i'm planning to build a buffer very similar to this setup. the plan is to mount the whole assembly on a vertical shaft (the verical shaft will probably be mount at its upper and lower ends) such that the buffer can pivot out of the way when not in use. i was planning to use a 5-pulley stack so i could change the speed/torque easily. i'm not sure what kind of saw you'll be using, but maybe this could be useful for you, too, if you plan to run different size/tooth blades. then i was going to incorporate some type of quick change system for the buffer wheels. i think i'm going to try a keyless drill chuck first. so i'll leave each wheel stack assembled on its own shank so i can just swap the shanks. this project is probably a couple months off yet. i'd love to see pics and hear about your progress on this.

done=) I will keep this thread updated with photos when completed.