SquareJaw Bearing Trucks

Design of moving parts, and method of locomotion.
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SquareJaw Bearing Trucks

Postby beermkr » Tue Dec 27, 2011 2:47 pm

I have developed a method to make a bearing truck that in my opinion is stronger, more rigid, and cheaper than a v Groove bearing set up. It is designed to run on a 1 x 1 x 0.125 aluminum U channel but can be easily modified to run on just about any square surface. With some spacers and a longer cross bolt it could run on Uni Strut.

What follows is the process to build one truck.

Templates. Printed on 8.5 x 14 paper. Print two copies to build all of the trucks for a SquareJaw machine

Repositionable Adhesive

Spray adhesive on the back of a template and let it air dry for a minute or so. Line up the center section with a piece of 3/4 inch square tubing.

Continue to wrap the template around the tubing until it is fully adhered.

Cut to length using a hack saw or a chop saw. The exact length is NOT critical as the dimensions and spacing for the bolts and bearings are laid out on the template.

Center punch at all the crosses on the template.

Pre-drill all holes (use a larger bit than this as I broke this one 2 minutes after shooting this picture. Drill out all tapped hols with a 17/64's bit and the through drilled holes to 5/16"

Tap all holes to 5/1-18. I cheat and use a tap chucked in a drill to make short work of it.

All parts for the truck.

The side bearings consist of a 5/16-18 x 3/4 bolt, two bearings and a 1/4 washer.

Place a 5/16-18 x 2 bolt through the trhough drilled holes and arrange washer, bearing, washer, bearing, washer, bearing, washer.

Finished truck. This took me about 10 minutes to build. Ignore the extra hole as that is where I had to back drill after breaking my cobalt bit off in the hole.

Below are the template files and a parts list for the entire machine so far along with sources and costs.
SquareJaw Parts and Sources.pdf
(119.24 KiB) Downloaded 641 times
Truck Templates.pdf
(54.07 KiB) Downloaded 649 times
Mike Pensinger
Chief Brewer, The River Company Brewery, Radford, VA

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