Axel Diameters

[Booger]

we used the high traction robot wheels and they work very good with our design. the only thing im having trouble wiht is trying to figure out how much bigger the hole needs to be where the shaft goes into the side plates

[Madison]

Originally Posted by Booger

we used the high traction robot wheels and they work very good with our design. the only thing im having trouble wiht is trying to figure out how much bigger the hole needs to be where the shaft goes into the side plates

If it's a powered axle in bearings, you'll need to bore press fit holes large enough for the bearing outer diameter. If you're using a dead axle and you're not intent on being too precise (which seems to be the case), you ought to be fine by drilling out the hole with a drill bit the same diameter as your axle and then opening it up slowly by hand using a deburring tool or the like.

[Triple B]

233 uses 1/4" diameter axles

[Dick Linn]

Do yourself a favor and always use grade 5 or 8 bolts or something better anywhere you can. Forget threaded rod and any of that mystery metal stuff, unless it is very large.

Although heavy, we've more often than not used 5/8" driven axles with bearings on each end. 4 years, never a single drivetrain failure. This is using regular shaft with a keyway, which is not, to my knowledge, heat treated in any way.