The other new part in this package is the bearing shoe(s).
The part that actually carries the load from the bearings is made from aluminum, which is far too soft for the forces involved. Consequently, a harder material (stainless 304 again) is required for them to roll on.
The parts are dropped one by one into a setup on mill in order to countersink the screw holes.
A nice 1/4" zero-flute chamfer bit with a strong stream of air from the compressor to keep things cool. 304 is in the family of "moderately difficult" steels. The chrome that makes stainless, well, stainless, has the annoying habit of causing a phenomenon of work-hardening, which means that the very act of cutting it can make it more difficult to cut. Care must be taken to select the correct feeds and speeds to cut the stuff properly.
Job done! A nice, satisfying stack of parts.
The part that actually carries the load from the bearings is made from aluminum, which is far too soft for the forces involved. Consequently, a harder material (stainless 304 again) is required for them to roll on.
The parts are dropped one by one into a setup on mill in order to countersink the screw holes.
A nice 1/4" zero-flute chamfer bit with a strong stream of air from the compressor to keep things cool. 304 is in the family of "moderately difficult" steels. The chrome that makes stainless, well, stainless, has the annoying habit of causing a phenomenon of work-hardening, which means that the very act of cutting it can make it more difficult to cut. Care must be taken to select the correct feeds and speeds to cut the stuff properly.
Job done! A nice, satisfying stack of parts.
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