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Regenerative Agriculture and Direct Drilling
Regen Ag and No-till Machinery
Harder 750a discs
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<blockquote data-quote="Simon Chiles" data-source="post: 3344034" data-attributes="member: 1233"><p>Having spent half the night trawling the internet ( Thanks David ) this is the info I have. Firstly the spec is not only about hardness, the JD specs for discs run to some 25 pages long. Having looked through Bellota's catalog they don't seem to list a JD disc anymore, and the other discs they list for seeders are all 50 RC. They do make 55 RC discs but these are for disc harrows and not seeders.</p><p>Ingersoll discs are also 50 RC, I think they make them in 4 and 5 mm thickness, hence Exapta's claim for 25% more wear. However all the JD discs I've had are 5mm thick. Also Ingersoll are a supplier to JD. JD have, I think, 9 different factories around the globe who make discs for them.</p><p>I suspect, but don't know, that the production of the harder discs became uneconomic, JD discs used to have a RRP of £60 and when they were everyone was trying to source them cheaper. The solution is to persuade someone ( probably JD ) that you are willing to pay more for a harder disc, by my calculations a disc that meets the right spec and is 55 RC could be £100 and would still be cheaper than a 50 RC at £39. </p><p>Note Boron Steel hardness is 50 RC +/- 2.</p></blockquote><p></p>
[QUOTE="Simon Chiles, post: 3344034, member: 1233"] Having spent half the night trawling the internet ( Thanks David ) this is the info I have. Firstly the spec is not only about hardness, the JD specs for discs run to some 25 pages long. Having looked through Bellota's catalog they don't seem to list a JD disc anymore, and the other discs they list for seeders are all 50 RC. They do make 55 RC discs but these are for disc harrows and not seeders. Ingersoll discs are also 50 RC, I think they make them in 4 and 5 mm thickness, hence Exapta's claim for 25% more wear. However all the JD discs I've had are 5mm thick. Also Ingersoll are a supplier to JD. JD have, I think, 9 different factories around the globe who make discs for them. I suspect, but don't know, that the production of the harder discs became uneconomic, JD discs used to have a RRP of £60 and when they were everyone was trying to source them cheaper. The solution is to persuade someone ( probably JD ) that you are willing to pay more for a harder disc, by my calculations a disc that meets the right spec and is 55 RC could be £100 and would still be cheaper than a 50 RC at £39. Note Boron Steel hardness is 50 RC +/- 2. [/QUOTE]
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Regenerative Agriculture and Direct Drilling
Regen Ag and No-till Machinery
Harder 750a discs
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