[Grant Bowker]

Yes, I'm the buyer.

I have been on a quest for ND928 or equivalent bearings, not because I have an immediate, known need but rather because steering, like brakes are areas I don't personally want to take a chance with.

The Aetna bearings have been seen to fit Bob Carriere's front axle but according to a polite lady at Aetna's sales office are discontinued and completely out of their distribution system.

I've been hunting through period 1946 ND catalogues as well as application lists and haven't found reference to the ND928. Either it was a special, or had already been discontinued????

There was a recent Ebay listing for Cadillac Lasalle Kingpin bearings that looked very similar to the 928. The seller couldn't/wouldn't describe any markings on the bearing that might have confirmed identity. They went for about $US250 for a pair.

One local bearing supply specialist said that they would do a search for me to see if the ND928 or Aetna A1570 could be found. No luck after a month and a half, but they were enough into service to call and tell me that they'd failed.
When I sketched the section of the bearing for another supplier, they said it looked like a thrust bearing that used to be used in tractors. A third supplier has told Bob Carriere that he can't find replacement bearings, but that as long as the existing races are good, they can be rebuilt with new balls.

An internet search (actually quite a bit of searching) unearthed a broker in Texas who had 7 (I think) Aetnas available for the sum of $US180 each. More than I was willing to spend "in case of".

As Rob said, be nice to your bearings, take care of them so you won't have to go questing for replacements that are getting rarer and more expensive.