Alternate roller bearing to the NJ203E for the Layshaft

Hi All,

I'm new to this forum and have been doing a lot of reading into the pro's and con's of the NJ203-E-XL-TYPE2 Roller bearing conversion v's the upgraded 6203TB.P.63 ball bearing for the Commando's gearbox layshaft. I was just wanting to know if anyone has looked at or experimented with the NUP203-E-XLTYPE2 version of the roller bearing?

It would appear by FAG's data sheet that this bearing is a locating bearing that allows axial forces in both directions as apposed to only one direction for the NJ203 version used with an L section ring.

http://medias.schaeffler.com/medias/en!hp.ec.br.pr/NUP2..-E*NUP203-E-XL-TVP2

http://medias.schaeffler.com/medias/en!hp.ec.br/NJ2..-E?#NJ2..-E

Regards
Damian

Could this offer the best of both worlds, having the added radial load of the roller bearing with he locating properties of the deep groove ball?

Next time I'll try and figure the picture posting procedure.

What would be the point in controlling the endfloat of the shaft. The shaft locates no gears.

When the countershafts enfloat is controlled by using a shim behind the kicker gear, it is not done to "control the endfloat" of the shaft itself, but to control the endfloat of first countershaft gear so it has deeper engagement and does not tend to pop out of gear. Jim

Jim, regardless if the layshaft is fixed or floating, shimming would still be required just the same

madass140 said:

Jim, regardless if the layshaft is fixed or floating, shimming would still be required just the same

Click to expand...

That is very true [and has been recommended by Norton long before roller bearings started being used on the layshaft]. Jim

I dont see any advantage over a NJ, maybe a bit harder to fit the layshaft.
But the same as fitting the original 6203 , but would probably be a better choice than the 6203.

I guess I was thinking that both 1st and 4th gear had a fixed alignment that would be beneficial to maintain.

Not having an NUP bearing in hand but looking at more reference pictures found on the Net, it would appear that the loose rib washer would mean that the bearing would have to be mounted on the shaft first. This as mentioned would possibly make it more difficult to assemble (and remove the shaft if necessary) especially if the bearing needed to be secured in the housing with a strong retaining compound.

I appreciate your insight thanks Jim and madass140

Cheers Damian