Thanks for the replies.

I’ve tried those suppliers mentioned, unable to help.

123 Bearings, they seem not to be stockists as such, rather they will find far eastern source of bearings who can supply through themselves.  Okay for large quantities, but 4 off…

HowardT, not sure what you mean, there is no existing cage.  The rollers would be 1/8″ diameter, perhaps make a cage?

Adrian, the assembly uses drawn cup bearings like the ones you found, still readily available in a variety of widths.  For some reason the originals are half the width of those you found and full compliment.

Problem is that there is some “play” in the fit of these bearings.  The shaft these bearings run on are of inadequate stiffness so a little bit of play would be useful, but there is too much.  Only a thou or so too much.  A needle roller cage running directly on the shaft and sleeve should reduce the clearance to nearer the ideal.  Problem is finding them…

WJ-131714 is the part number of a needle roller cage assembly, not the whole bearing assembly.

The original DC bearing,  13/16 x 1 1/16 x 1/2″ full compliment bearing seemed an odd choice.  These bearings carry a relatively high load.  So, fitting wider, caged bearings should help with load capacity.  Not double the width (only 75%) of the originals as I said, the important thing is the increased load capacity.

Problem is the clearance, some play between shaft and component running on the shaft, a little over 1.5 thou.

Fitting a cage assembly running on the shaft and mating part, (both hard), would reduce the clearance to something more acceptable while still coping with the (extremely small amount of,) flexing of the shaft under heavy load.  Different sizes for DC vs cage assembly work in my favour, just!

Hopefully that is clear now, still need to find the cage assemblies…

Thanks GC, I’ll call them tomorrow.