8070 with a 540 pto
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Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=17787
Printed Date: 04 Nov 2025 at 1:02am
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Topic: 8070 with a 540 pto
Posted By: BStone
Subject: 8070 with a 540 pto
Date Posted: 06 Sep 2010 at 11:47am
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I'm thinking about putting a 540 pto on my 8070 ps and using it to pull a 15 ft mower.Would be cutting large area's of land.Would this be a good idea using a 170 hp tractor with FWA? I already have this cab tractor and if I don't use it I will need to buy a smaller cab tractor.Any have thoughts on this or as any one done this?
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Replies:
Posted By: firebrick43
Date Posted: 06 Sep 2010 at 1:03pm
They make mowers that large with 540 pto? I thought they were all 1000
when they got that big. 1000rpm allowed the companies to transmit more
power without up sizing the shafting very much, similar idea to using
240 volt compared to 120 volt.
I wouldn't mow when the ground is damp, depending on the circumstances, compaction from the heavy tractor would be greater.
Other than that, no other issues I can think of. Neighbor runs one that size with a 7230 JD, but a 1000 rpm. and does well with it.
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Posted By: BStone
Date Posted: 07 Sep 2010 at 6:05am
Posted By: Dave in il
Date Posted: 07 Sep 2010 at 10:04am
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I've been using 7060's and my 8050 fwa for years on 15' bat wings. They make a good combination. The batwings I have had were 1000 rpm gear boxes, the one I have now has a main gearbox rated at 180 hp. I even mow road ditches with mine as it's safer and faster than a 7' 3pt mower behind a smaller tractor. I usually leave the duals on mine. Keep the slip clutches tight and you can walk thru anything. I don't know if your 8070 has a dual PTO, if not you'll need an adapter to the smaller diameter 1000 rpm pto. I don't think you would want to run a 540 rpm mower as you would need to run the tractor at low rpms or you will tear up the gearbox. If you have 540 mower I would suggest you trade up.
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Posted By: Hurst
Date Posted: 07 Sep 2010 at 10:18am
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I think you'll be fine. We have a 20 foot 3240 woods that is 540 we use for mowing pastures. A lot of horse farms use the 540 rpm batwings. 1000 rpms is 2x as many turns on your bearings, u-joints, etc. So, if you're doing "lighter" mowing, then a 540 rpm batwing works great.
Hurst
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1979 Allis Chalmers 7000
5800 Hours
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