[Fot] TR 3/4 Southwick axle/bearing follow-up

[fubog1]

Hi all- This is a follow-up to myrecent post re TR-4/4 southwick axle specs & bearing fitting.Apparently this was discussed around 5years ago but I missed it, so I'm posting it again for those unawareof it.The problem is that most of thereplacement bearings don't fit, including the chicom Timkens.The corner radius of the inner race ismuch smaller than the axle journal radius, where the inner race buttsup against the axle shoulder, preventing the bearing race frompressing fully home.This effectively weakens the axle sinceall of the stresses remain in the axle inside corner radius, insteadof being distributed into the hub.I measured a RW507ER Timken, National &unknown chicom bearing & all had a small radius.The only bearing that actually fits isthe 9507F “small ford” bearing from Moser, unknown manufacturer.The photo below clearly shows that theMoser bearing inner race is relieved/clearanced out in the last ¼ inch or sobefore the radius, so the bearing presses fully home as intended.BTW this is easily checked w/a feelergauge, there should be NO clearance between the inner race & axleshoulder.
And many THANKS to those who respondedto my post!

Glen Efinger

Moser on leftrepresentative of the other 3 right
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