somewhere on this forum someone gave the cr #s for track roller seals .I cant seem to find that posting.can anyone help by pointing me to the post or repeating that info?
It took me awhile to find that thread, but here it is. Credit to Jack in NB and Mike in MN:
Posted: Aug Mon 06, 2007 2:54 pm Post subject:
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The C/R number 15039 is correct. Others work as well: C/R 15005, National 450059, 470380. 1.5" x 2.37" x .5". Width may vary.
And remember that the lip points outward on installation - to keep dirt out, and let the oil flush dirt outward. I only screwed one side (6 seals) last time.
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Mike Shanley
Master Operator
Joined: 25 Apr 2007
Posts: 41
Location: Woodbury, Minnesota
Posted: Aug Mon 06, 2007 6:54 pm Post subject: Seals for rollers and front wheels
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Jack is correct. The Chicago Rawhide number is CR15039...The National Seal number is NA450059 and the TISCO number is 15039 CRI. Tisco item number is 929883. It took me a few days to remember to look these up. Mike Shanley, Woodbury MN
My Gramps always said to be sure to get the real Chicago Rawhide seals made from leather and NOT plastic seals. The leather is designed to absorb oil and is supposed to leak slightly. The plastic seals do not leak if the shaft is perfect, but they won't hold up as well in dirt and will cut into the shaft.
Many thanks for that info.Now as I rebuild the track carriage I have to assess which rollers can be put back into service and which ones need new bushings or shafts .These rollers had been filled with grease and it didnt do some of them any good.I wonder how much wear these bushings and shafts can have ? I will replace the ones where the bushing is really thin or the shaft has big wear but it would be nice if some could be used again.Any advice out there?
If they're worn more than 1/32, the new seals won't last very long.
I've rebuilt some axles - welded them up with a soft rod like 6011 or 6013 and turned back down to 1.5. Messy, but worked.
I've also got about 6 feet of 2 1/4 Atlas Stressproof bar stock here in Fredericton if you have a machine shop handy and want to carve out some new ones.
But I'd check the price of new ones with Zimmerman first - I did, and forgot about making them!
thanks jack.I have seen some info on shaft repair sleeves that slip over an old shaft and provide a nice new surface for the seal to run on.These were not specifically for cletrac of course but i wonder if anyone has had experience with something like this. Are they cost effective? Im going to do some looking myself but could use any help I can get.I suspect Ive got severel shafts worn more than 1/32.Can anyone give measurements on what a new one would be from the bottom flat spot to the top?
I don't have the measurements you need but I do have experience with the sleeves your looking for. We use "Speedy sleeves" at work on reels for fairway and greens mowers. They hold up well and are easy to install. I get them at Motion Industries in town but any bearing supply house should have them or be able to get them. I just tell them what seal I am using and they supply the sleeve. They are a little spendy though. The last ones I bought were about $20.00 They were for a 3/4" shaft I believe. I use them in this application because I don't have a lathe big enough to get a reel in (yet).
Eric