New PVT Front Wheel Hub Bearings

[Robin A Woolmer]

Orson Have new sets of front hubs & due to the obsolete outer bearing this is re-specified with a larger Cup O/D to suit the new modified hubs. A point also to note is that the old specification bearings have a very thin wall on the cup & in the case of one of my old hubs the cup is severely cracked.
   The bearings numbers for these new Orson Hubs is as follows-
   Timken 21075/21212 & 14125a/14274, you will also need an oil seal which originally was felt face fitting, so you may need to check what is available.
   I have provided this information to Orson to assist there customers.
   This is following a request for information from them.
   
   Robin

[Robin A Woolmer]

Additional information regarding  grease seals, these were originally a felt seal set in a pressed steel cup, the felt seal replacements are available from Brian Eacott but he does not have the steel cups so you will need to use your old cups or have new ones made.
   Lip seals are very difficult to find in the sizes we need so using the original felt seal is the best solution.
   
   Robin

[Robin A Woolmer]

An update on the cost of the originally specified outer bearing for the PVT hubs Timken 1351/1330, these are now hard to find but when you do they cost over £130+vat each, so you might need to consider new hubs or possibly having the hub bored out to the next available bearing size as we have done on the new hubs.
   We have also checked the USA for the bearing & found them even more expensive!
   
   Robin