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New Idea 5209 roller shaft questions

C

ccaissie

Member
Earlier post discussed modifying or building a roller for a compost turner project.

Since the rollers I have will be great spares for the other 5209 in service, I will build a new rotor out of sch40 pipe.

Building sawmill equipment and many conveyor rolls, I'm ok with building a 7' long rotor.

I'm looking for a suitable spline to fit the existing drive system. The yoke has a female spline of 1.4" o.d x 20 teeth. I know the original shaft has a flat that locates the timing aspect of the roller grooves. In this case, not necessary.

Can anyone point me to a salvage yard that might sell me the end of a busted roller (they do break), or a good drivetrain house that might be able to match this?
mvphoto67848.jpg
 
According to my information the shaft on the end of the roller is a 1-3/8" 21-spline per ASAE S203.13 which is the same as a standard 1000 rpm PTO
shaft. The spline in the telescoping portion of the driveshaft is a 20 spline but I don't know to what standard. Since nothing is intended to
interface with the telescoping splines except for the parts of the driveshaft itself it may be hard to match up to using off-the-shelf, industry-
standard components.

As for your rotor I'd suggest using structural tube instead of pipe unless you're planning on running it fairly slowly. Tubing has better
tolerances, is straighter, and will have better mechanical properties compared to pipe. The cost will be higher but there's a reason for this. The
rollers you're replacing go through a fairly rigorous manufacturing process to make sure they are straight and balanced to prevent things from
getting wild when running at the rotational speed that they do.
 

Thanks for the info. Tube is better, I agree. Pipe is never round.

I counted splines on the roller shaft stub several times and get 20.
mindful that there is a special doubletooth to keep timing.

Will try to get a shaft.
 

Actually it is 1.375 x 21 teeth on the roller shaft.

Agree, it is 20 teeth on the gear box side.

Surplus Center has a 6" long stub for $21
 
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