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 | Had a neighbor borrow a chain last night to pull out their combine since all of their chains have either stretched beyond use, or broke. When they brought the chain back, they were asking where they might find a chain like the two I've got -- 3/8" x 20', and 30+ years ago were referred to as "double strength" or "high test". Done a little googling last night and didn't come up with anything that satisfied my curiosity as to what todays chain grades mean in comparison to the descriptions of years ago. I'm sure someone here can help. Don't want to advise them to buy a certain grade and it turns out to be crap and breaks the first time they use it. Not really interested in cables or tow ropes due to handling and storage issues. It's just a lot easier to keep a chain handy during planting and harvest than the other options. | |
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 Eastern VA. No such thing as too many Magnums. | Two grades are real popular. High Test is grade 43. A 3/8 high test load limit is 5400 lbs. Most people pull a heck of a lot more than that though. The better grade is grade 70. Most transport haulers want grade 70. | |
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 | Grade 70 made in the USA and not China. Believe me there is a difference. | |
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| Huntley Montana | <p>China also makes Grade 70. Any Commerical truck HAS to have grade 70 chain. Grade 43 will get you put out of service. 3/8" chain has about 1.5-2x the working load of 5/16". I hate to handle 3/8" because of the weight. But it will pull a lot more.</p><p>Now for overhead lifting you DO NOT use either Grade 43 or 70. It has to be grade 80 I think. & it's a lot tougher, but a DOT man don't like it on a truck.</p><p> Plain grade chain is only good for gates IMHO, & 43 isn't much better.</p><p> I buy most of my chain at HD Truck or trailer stores. They seem to have the best prices on Grade 70.</p>Edited by Badger 11/22/2008 20:04 | |
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| Central Illinois | Why doesn't a DOT man like grade 80 on a truck? I didn't see grade 80 listed on the peerless chain site listed in another post. | |
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| Huntley Montana | Because thier regs call for grade 70 & most of them don't have a clue what 80 is | |
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 Brazilton KS | Grade 43 or 80 is just as legal as tiedown as g70 is. 43 is not used because of weight...for the same size of chain g70 has almost twice the WLL, so it takes darn big g43 to secure anything of any weight. The regulations only state the WLL required in relation to the weight of the load, and how the chain must be marked to prove it's rating, or else it reverts to G30 ratings which are next to nothing. One does not see very many attachments which are g70...most g70 chain uses g80 hooks or connectors. g80 is only marginally stronger then g70, however 80 is proof tested and 70 is not. g63 is the proof tested grade which is roughly equivilent to g43. 63 is also approved for overhead lifting, and is used in lifting applications which are subjected to high heat. G80 is heat treated alloy and loses it's rating if exposed to excessive temperature because the heat treatment is jeopardized. You can secure a load to a truck with baling wire as long as you have a rating for it and use enough of it. One night I somehow stumbled onto a USArmy loadmaster's manual while searching for something....I was surprised by the detailed instructions for securing a 5-ton truck to a rail car with #9 wire so as to meet AAR standards. After considering it a bit, I can see where it has some merit. No need to worry about returing the tiedowns, no need for special tensioners, just twist the wires with a stick. | |
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 | Many years ago helped local dealer unload combines off rail cars. Rims were wired down with" many strands" of #9 wire. Probably with soft tires then aired up. First thing the boss did when we arrived was to take valve core out and let A LOT of air out. Very rarely did he let too much out. | |
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 central - east central Minnesota - | Peerless chain company in Winona Mn makes chain in house - they can answer any of your questions . . . http://www.peerlesschain.com/ | |
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 | My Dad has an older 3/8 chain that is tough as nails, really stands up to what ever we hook it to. He claims that is made of what he calls "sweet steel". Does anybody have a modern reference for this chain. INDY | |
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 NEWTON, IL (SE IL.) | I'd imagine the old chains referred to are grade 70. Been around for many many years. We've never broke one. Important not to jerk though. | |
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| SW North Dakota | http://www.1st-chainsupply.com/binderreq.pdf http://www.1st-chainsupply.com/ http://www.fmcsa.dot.gov/rules-regulations/administration/fmcsr/fmc...Edited by jorlee 11/22/2008 23:45 | |
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| Texas | you will want transport chain ,but be aware a 70 3/8 " transport chain will NOT hold a 150 h.p 2wd dualled tractor -they might hold a 100 h.p. on singles . i have a man killer 5/8 " that will hold a 350h.p. 4wd ,but it is HEAVY . the overheadlifting chain is good stuff but very expensive best stuff you can get is here ---www.thecrosbygroup.com they have 100 grade | |
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| Brazilton KS | A 325 hp Challenger will break 5/8" G70. Been there, done that, got the spliced chain for a reminder....two of them actually. | |
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| Texas | plowboy - 11/23/2008 12:10 A 325 hp Challenger will break 5/8" G70. Been there, done that, got the spliced chain for a reminder....two of them actually. i would not want to be there when you did that. it does settle the tires vs tracks debate. 5/8" will hold deere 8870 | |
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| Brazilton KS | I think there was a little more to it then straight draft, although the tractor should be capable of breaking them with pure drawbar pull under good traction conditions....chain is approximately 19,000 lbs WLL and tractor will generate nearly 40k lbs of drawbar pull. Both of ours which were broken failed right where they went over the edge of the drawbar, and I suspect that there was a pressure spike on the edge of the link from the edge of the drawbar. I don't think they would have failed if they were attached with a shackle instead of around the hitch pin. | |
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 Slicker than a Yes album. | We should be good with our 5/8" on an 8330T. Pulled a few semi's out of the mud this fall, but they weren't buried. We almost got the 3/4" but decided against hernia surgery! (IMG_1075.JPG)Attachments---------------- IMG_1075.JPG (52KB - 325 downloads) | |
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log chains -- grade questions
