Rear double row axle bearings

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Thanks Les,
I thought it was too easy. Guess I’m back to repacking the original.
Pete
 
A self-aligning bearing is probably not a good choice for the sprocket(Mk3) or sprocket/drum support bearing.

Rear double row axle bearings
 
Probably not, just threw it out there to see if anyone has come up with a good replacement sealed bearing since the last time I checked.
I think when it’s time for a new sprocket I’m going to have it machined for something better.
Thanks again Les
Pete
 
Can’t seem to find them from well known manufacturers, i.e. SKF, etc. Same problem I had last time I serviced my rim. There are some available, but they seem to be Chinese.
 
Get in contact with madass on this site. He has the correct fitting double row front and rear bearings that require no machining for $20 each plus shipping. I just received mine and the single rear axle set up he sells. You might want to consider this modification instead of the breakable two piece stock stub axle set up. Look at his products for Norton's at www.tritonmotorcycleparts. com I bought his 13mm master cylinder resleave kit, rear axle and 2 row bearings. Quality is suburb. You decide. I recommend.
 
Dennis,

I’m pretty sure Don doesn’t have anything for a MKIII rear axle. Not knowing anything on what bearings he is using I can’t comment. I just know that every “ major” bearing manufacturer I tried does not have this bearing. That in itself was enough to keep me away. It’s no big deal to service the axle and it gives me a chance to clean and lube the speedo drive.

I have purchased from Madass before and have always had a good experience.

Thanks,
Pete
 
Pretty sure I got a double row bearing for the front and rear from Walridge. Right size.
 
Deets55 said:
I am getting ready to strip my rear wheel for regular maintenance and came across this:

https://www.qualitybearingsonline.c...MIr7Lr-4no3gIVEv7jBx0axAo0EAQYAiABEgL1YPD_BwE

Will this work as a replacement for part 06.7688 Pete
Click to expand...
I found one of those in my brake drum on the 73. just because it fits doesn't make it right. the real concern with a self aligning bearing is as follows:

the rear axle is thin to begin with and in two pieces. you want the hub and drum to rotate as one piece. a self aligning bearing will allow the brake drum to wobble... now think what that will do to the chain. and the wobble will contribute to an early shaft failure...

gettin of the soapbox o_O

also if SKF, FAG, or NTN or any other recognized bearing manufacturer do not list a seal unit (in the correct dimensions) in their catalogue, i would not accept it unless it can be clearly demonstrated that it has the same load capacities as my SKF unit.
 
Deets55 said:
Probably not, just threw it out there to see if anyone has come up with a good replacement sealed bearing since the last time I checked.
I think when it’s time for a new sprocket I’m going to have it machined for something better.
Thanks again Les
Pete
Click to expand...

Personally I prefer the open or non-sealed bearing to the sealed type. Except for an over load condition, bearings fail from dirt getting into the grease (open type), or from running in their own wear debris (sealed type). The Norton hub protects the open bearing from dirt, and if the bearing is periodically
rinsed with diesel or kerosene, and repacked, it will last indefinitely long.

The sealed type eliminates some of the maintenance, but IMO, will fail sooner.

Slick
 
I agree with 850commando, I am currently using FAG 4203-BB-TVH bearings but cannot find any technical information, I have though requested the information.
Specs on the 4203 -B-TVH are:
m 0,1 kg Mass
Cr 15600 N Basic dynamic load rating, radial
C0r 9500 N Basic static load rating, radial
Cur 480 N Fatigue limit load, radial
nG 14900 1/min Limiting speed
nϑr 15100 1/min Reference speed
f0 13 Calculation factor

This >, that as quoted by Les for some reason??
I copied this from Schaeffler (FAG) web site, from whom I have requested the technical/engineering specifications.

My take on the double sealed bearings is that the miles we do on these bikes, they will outlast the bike, and are maintenance free a big plus.

Best regards
Burgs
 
Matchless said:
Skf 622032 2rs1 & 622032 2rsC3 are both double row 17x40x16.
Click to expand...


SKF 622032
dynamic load 9.56 kN
Static load. 4.75 kN
Fatigue .2 kN

Look at post #2 per LAB for specs on OEM bearing. 622032 doesn’t seem to be up to the factory requirements.

Pete
 
Deets55 said:
SKF 622032
dynamic load 9.56 kN
Static load. 4.75 kN
Fatigue .2 kN
Click to expand...

That is the spec. for the single row 622032 (62203-2RS1?) bearing.
http://www.skf.com/group/products/b...ll-bearings/index.html?designation=62203-2RS1

I haven't as yet been able to find any double-row "622032 2RS1" (or 62203-2RS1?) bearing? The SKF search only finds 62203-2RS1.


http://www.skf.com/group/products/b...ep-groove-ball-bearings/double-row/index.html
According to the SKF info:

"Double row deep groove ball bearings (fig. 1) are very suitable for bearing arrangements where the load carrying capacity of a single row bearing is inadequate. For the same bore and outside diameter, double row bearings are slightly wider than single row bearings in the 62 and 63 series, but have a considerably higher load carrying capacity.

Double row deep groove ball bearings are only available as open bearings (without seals or shields)."
 
Les,
Is it possible that the space required by the rubber/metal shields reduces the size of the balls, thus reducing the load rating. Im starting to think that the manufacturers just can’t fit a sheilded bearing in the available space with the required load rating. I know CNW will machine the sprocket and supply the correct rated bearing.
Running out to buy a tub of grease now. LOL
Pete
 
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