Posted by RodInNS on January 16, 2009 at 05:52:08 from (216.118.158.123):
In Reply to: disc mower posted by voglerb on January 15, 2009 at 10:59:24:
Kuhn, if you want a mower for the long haul. Change the gearbox and bed oil before you start the season and you'll never have trouble with that bar.
From what I've found with them, the mounted mowers are light enough that they mostly jump over obstructions so that they don't damage the bar unless you ram them into a pole or something like that. Discbines are more prone to damage because of their weight. The newer Kuhn bars are also modular in that you can repair them without complete disassembly of the bar, unlike the older GMDxx series. The GMDxxx series are the modular ones. We've got an older NH 465 which is nothing more than a repainted Kuhn GMD77HD. I don't know how many thousand acres it's cut now, but it's seen a hard life in behind a lot of power. It's had a few sets of drive belts, at least one PTO shaft rebuild, new jack shaft bearings, new pivot bushings, a new breakaway latch, a few new discs, countless welding on the rest of the discs, a lot of skid shoes and more blades than one person should be required to count. It's spent it's life on rough, rocky fields at high speed. The bar has never been opened. Never a bearing failure. Never a seal leak. Nothing. With that said, it is due to be opened now because the bar pan is worn thin and cracked at the outer end... Considering the abuse that machine has taken, I don't think it's given bad service.
I think if you've got 55 hp you're asking a lot of the tractor to run that size mower tho. 8' would probably be better suited to the tractor, both from a power perspective and a side draft perspective. You can run the 9', but you're pushing it. You'd need to drive quite slowly or not cut a heavy, tangled crop.
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