just Dave Posted October 8, 2022 Share Posted October 8, 2022 I am putting bearings in a IH 150B loader the oil seals are not available of course so I was wondering if anyone has clever solutions THAT HAVE WORKED for them. I have to machine the seal bore on one side of the idler , so I cam make it to fit. I found CR oil seals , but them alone wont last a day in the dirt. I can switch to grease but prefer gear lube? Quote Link to comment Share on other sites More sharing options...
Dirt_Floor_Poor Posted October 8, 2022 Share Posted October 8, 2022 What do modern Cat machines use? Is there any chance of making something like off of a 953 loader work? 1 Quote Link to comment Share on other sites More sharing options...
jeeper61 Posted October 8, 2022 Share Posted October 8, 2022 Use the corn head grease 1 1 Quote Link to comment Share on other sites More sharing options...
hardtail Posted October 8, 2022 Share Posted October 8, 2022 I had always considered making a dust shield to protect the seal but given the severe environment not sure of success? 1 Quote Link to comment Share on other sites More sharing options...
jeeper61 Posted October 8, 2022 Share Posted October 8, 2022 Maybe some felt they use that on closed knuckle steering axles to protect the seal 1 Quote Link to comment Share on other sites More sharing options...
mike newman Posted October 8, 2022 Share Posted October 8, 2022 ...find some small ''dura-cones '', Dave..they will do the trick.... .....some one who has the knowledge...and the work shop facilities that you have...should be able to ''make'' them....after all....they are basically a very simple but very effective seal........you just need a bit of 4041 stainless a some serious big, rubber ''o' rings behind each steel mateing surface....all fitted neatly into the bearing housing of your front idler ''yoke'' arms.....thats it !!! Mike 1 Quote Link to comment Share on other sites More sharing options...
just Dave Posted October 8, 2022 Author Share Posted October 8, 2022 I have looked around a bit today for some Bellville washers like the track chain uses, that might be similar to a dura-cone. I will make some calls Monday when industry is open. The OG seal picture in my book looks like opposing cones. I'm guessing one fixed to the axle and one rotates with the idler like a typ. mechanical seal. Thanks all Quote Link to comment Share on other sites More sharing options...
jeeper61 Posted October 8, 2022 Share Posted October 8, 2022 5 hours ago, just Dave said: I can switch to grease but prefer gear lube? The JD Corn head grease is a low viscosity grease so it is between gear lube and regular grease A lot of peeps use it when the seals are bad in gear boxes https://www.greenpartstore.com/John-Deere-Special-Purpose-Corn-Head-Gun-Grease-AN102562.html Quote Link to comment Share on other sites More sharing options...
oleman Posted October 9, 2022 Share Posted October 9, 2022 21 hours ago, jeeper61 said: The JD Corn head grease is a low viscosity grease so it is between gear lube and regular grease A lot of peeps use it when the seals are bad in gear boxes https://www.greenpartstore.com/John-Deere-Special-Purpose-Corn-Head-Gun-Grease-AN102562.html About 10 years ago I got a new gear box seal from Deere for our little 608 mower, their service manager told me that every gear box they had worked on for years left their shop with corn head grease. I keep the gear box topped off with the stuff, runs quiet, cool and does not leak. I believe that the corn head grease helps increase the life of the seal even when it gets bailing twine wrapped around the spindle. Quote Link to comment Share on other sites More sharing options...
Ian Beale Posted October 9, 2022 Share Posted October 9, 2022 On 10/9/2022 at 5:48 AM, mike newman said: ...find some small ''dura-cones '', Dave..they will do the trick.... .....some one who has the knowledge...and the work shop facilities that you have...should be able to ''make'' them....after all....they are basically a very simple but very effective seal........you just need a bit of 4041 stainless a some serious big, rubber ''o' rings behind each steel mateing surface....all fitted neatly into the bearing housing of your front idler ''yoke'' arms.....thats it !!! Mike Mike The ones used in track rollers might be around the right size. I have bought them for FA 10 carrier rollers Quote Link to comment Share on other sites More sharing options...
just Dave Posted October 17, 2022 Author Share Posted October 17, 2022 I am still waiting for material to make the seal from. Heavy wall 1'' 5''od CDS tubing. There doesn't seem to be much stock around Kansas City anymore. Steel houses here are shadow of the past, I guess due to offshore manufacturing. The gland size is 4 7/8 OD shaft is 2 1/2 if that rings a bell with anyone on ready made. Quote Link to comment Share on other sites More sharing options...
int 504 Posted October 17, 2022 Share Posted October 17, 2022 You could try Mcmaster Carr. 1 Quote Link to comment Share on other sites More sharing options...
Ian Beale Posted October 17, 2022 Share Posted October 17, 2022 Have a look at these https://www.sealsolutionsaustralia.com.au/product/floating-seals-duo-cone-mechanical-seals/ 1 Quote Link to comment Share on other sites More sharing options...
just Dave Posted October 18, 2022 Author Share Posted October 18, 2022 I like the design of these seals, getting the size I need is unobtainable it seems. I can get some solid stock, it is a lot more machining but it will work so I will likely go that way. Thanks for the input. Quote Link to comment Share on other sites More sharing options...
Ian Beale Posted October 18, 2022 Share Posted October 18, 2022 7 hours ago, just Dave said: I like the design of these seals, getting the size I need is unobtainable it seems. I can get some solid stock, it is a lot more machining but it will work so I will likely go that way. Thanks for the input. There might be other places that have them. They're in all the rollers, idlers and sprocket seals on a FA 10 and I guess all the others in that line. Maybe a track place like Berco as the access you have to parts for them is obviously a lot worse than ours - for reasons I don't understand. I just checked a FA 10 bottom roller shaft and that seal would be about 55 mm internal diameter They're pretty tough. I got a piece of fencing wire caught in one on a final drive on our dozer. I was able to work it out with a sheet metal finger and the seal took up again OK 1 1 Quote Link to comment Share on other sites More sharing options...
just Dave Posted October 21, 2022 Author Share Posted October 21, 2022 I picked up a chunk of old shaft from a machine shop I worked at in the early 90s, still friends, he didn't want any money for the piece. It has a grease hole in the middle and 1 cross hole a few inches in but I can work around it. I never did locate any tubing in the area and no local yard interested in bringing a shot piece in for my petty needs. I did get quotes on solid stock ranging from around $100 up to $790 for 1 foot of 5" round solid.wawawawhat. All factory seals I found would require modification on at least 1 dia. and would add a couple hundred bucks to the project along with material cost and machine time so......I will post some pictures when I cut my homemades. Quote Link to comment Share on other sites More sharing options...
Rawleigh99 Posted October 21, 2022 Share Posted October 21, 2022 Yes, lots of pictures!!! 1 Quote Link to comment Share on other sites More sharing options...
E160BHM Posted October 22, 2022 Share Posted October 22, 2022 (edited) Take a look at this…SKF METAL FACE SEALS. Part number 25096 shows 2.5” shaft size. Click on the part number for machining dimensions. Also there is a “where to buy online” button. Several distributors are shown for the KC MO area. https://www.skf.com/us/products/industrial-seals/power-transmission-seals/metal-face-seals These would be equivalent to the DuoCone seal that Cat uses in their undercarriage. Brian Edited October 22, 2022 by E160BHM Additional information added. 1 1 Quote Link to comment Share on other sites More sharing options...
just Dave Posted October 31, 2022 Author Share Posted October 31, 2022 I finished assembly of the idler last eve. I hope to get it hung on the rails today and buckle up the track chain. The drawing to the left has the general arrangement of the seal when in the gland. The stationery's are pressed on the axle shoulder and the nut respectively. The rotating is pressed and welded to the core tube of the idler. there is a slip-ring against the rotatory and the o-ring is stationary in the gland and rides against a polished surface on the stationary. I put a few thousandths horizontal squeeze on the o-ring before welding the rotating. The o-ring gland diametrically is .250" and a1/4" o-ring measures .275" cross section. 5 Quote Link to comment Share on other sites More sharing options...
Rawleigh99 Posted November 1, 2022 Share Posted November 1, 2022 Nice work! 1 Quote Link to comment Share on other sites More sharing options...
just Dave Posted November 2, 2022 Author Share Posted November 2, 2022 My book claims the front idler is lubed for life so it did not give a quantity of oil to put in but it did say on the lube chart SAE30. While on it's side I poured it 7/8 full sealed the plug and stood the idler up....24 hours and no leaks. 1 Quote Link to comment Share on other sites More sharing options...
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