R Series Rotary Disc Headers

R Series - M155-R85
R Series - M155-R85-2

Setting a higher bar for rotary disc performance.

If you’ve been looking for a header that cuts alfalfa at speeds up to16 MPH (26 km/h) and powers through 12' (3.6 m) of cane or a heavy winter forage crop – MacDon’s R85 Rotary Disc provides all this and more. This next generation rotary disc machine has been significantly improved in almost every important area including frame strength, cutting angle, disc pattern, header flotation and conditioning. There’s even MacDon’s new Double Windrow Attachment that allows you to place up to 48' (14.6 m) of crop into a single windrow by combining three 16' (4.9 m) conditioned windrows. The result is a machine that delivers greatly improved cutting, crop handling and windrow formation, especially in tough, heavy or wet crop conditions.

FEATURES • Hydraulically driven header with high capacity • Lower daily and annual maintenance requirements due to fewer moving parts than some competitive disc mowers • Improved header float with fine-tune hydraulic adjustment on-the go • Heat treated cutting and wear components • separate replaceable guards to protect cutterbar between discs

SIZES • 13 ft. (4 m) • 16 ft. (4.9 m)


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MacDon Full Line
We’ve cut 6’ (1.8 m) sudan grass at 10 MPH (16 km/h) with our M205 Rotary Disc windrowers.
– Alan Estes, Stuart, NE

In our custom cutting business what we need is speed – down the road and in the field – and that is what the M205 gives us. On the road the M205s DualDirection™ is a huge thing for us as we can travel at 22 mph between fields. When cutting, I can go as fast as I want; I’ve cut sudan grass 6’ high going 10 MPH (16 km/h). I actually slipped the machine into high side transmission to cut because I couldn’t go fast enough in low. MacDon’s R85 head can handle it just as fast as you’re putting it through – the only thing that slows you down is the condition of the ground. Before these machines we used to cover 2000 acres (809.4 hectares) and now we’re up to 6000 acres (2,428.1 hectares). And I don’t see us slowing down right now. The time we’re saving with these machines is helping us get more business.

Find out more about R Series Rotary Disc Headers
Our MacDon windrowers have saved us a lot of time. We can lay a field down quickly by cutting alfalfa at up to 14 MPH.
– Shawn & David Bos, Bozeman, MT

With our previous flex-head we would try to maintain 100% engineload, but we were always down in the 50%, 60%,70% range. Now with the FD70 we’re not only able to attain 100%, we are also cutting 3 to 4 MPH (4.8 to 6.4 km/h) faster, and 4’ (1.2 m) wider with each pass.

Find out more about M Series Windrowers
With MacDon's Rotary Disc Windrower we were able to fly at up to 12 MPH (19 km/h).
– Denver Pugh, Shedd, OR

Last year, we ran six windrowers, but this year we ran only three units - two new MacDon M200s with R80 Rotary Disc headers and one older windrower which we only used to open the fields. When the weather turned hot, our crops ripened faster and our normal three week harvest turned into two. I was worried that we would not be able to do it with just two machines but they kept up just fine, primarily because of their increased speed on the highway and in the field. In the field we were running on average 10 to 10.5 miles an hour (16 to 16.8 km/h), and we did peak out at 12 MPH (19 km/h) every now and again. As such, we were able to average 250 acres (101 hectares) a day and the only limiting factor was the ripeness of the crop. We were also able to save time on maintenance. Because the R80 is hydraulically driven, doesn’t have knives or guards, and we only had three instead of six units to service, we were able to get out there cutting sooner than normal and add two hours cutting a day.

Find out more about M Series Windrowers
MacDon's Rotary Disc Windrower goes through molehills like they're not there.
– Lorne Carr, Innisfail, AB

My M150 R80 Rotary Disc Windrower is so much better than the auger we were using before. Before when we tried to cut wet Timothy hay with molehills, we would stop and get out to unplug sometimes every 10 minutes. But with the M150 R80 you don’t even know that the hills are there. They might pull the engine down 100 RPMs but you wouldn’t even notice that if you weren’t watching. Our down time in the field is now basically none. Another improvement is in our field speed. With the old auger in that crop we would be lucky to be doing 3.5 MPH (5.6 km/h), but with the R80 we are able to average 6 to 7 MPH (10-12 km/h). I’ve even had it as high as 10 MPH (16 km/h), and it still cut perfectly and laid just as good a swath, but I just don’t like going that fast. I really like the swath it lays, especially if you lay it out wide, then it lays just an absolutely beautiful, even, perfect windrow.

Find out more about M Series Windrowers

PRODUCT FEATURES

Stronger, Less Maintenance

Stronger, Less Maintenance

The replaceable inner skin on cutterbar access hoods helps to reduce possible damage to outer cover for improved resale value.

MacDon’s engineers have substantially strengthened the R85’s header frame by making sure that the top link, lower lift arms and all header parts are anchored or bolted into sturdy frame members. Operators will also appreciate the R85’s lower maintenance requirements thanks to its fewer moving parts than mechanical drive designs, and greasing intervals of 25 and 50 hours.

Cut Lower, Cut Cleaner, Cut Faster

Cut Lower, Cut Cleaner, Cut Faster

To help you cut lower and at a flatter angle we’ve both lowered the profile of the cutterbar and strengthened the design of the cutterbar cradle. These improvements combined with the R85’s sturdy frame design and excellent spring flotation system allows you to run the machine faster over rough terrain and still maintain a consistently clean cut.

Improved Capacity and Crop Handling

Improved Capacity and Crop Handling

We’ve given the 16' (4.9 m) R85 an overshot auger to more efficiently transfer crop from the discs to the wide conditioner rolls and improve cutting performance in tougher conditions.

The R85 boasts a number of new features that improve capacity and crop handling. These include an optimized disc rotation pattern to reduce the amount of debris thrown across the cutterbar, and newly added accelerators on each disc to promote better crop flow in thick and tangled crop. Together, these improvements add up to significantly increased cutting capacity, reduced crop stripping and improved windrow formation.

New Overload Protection

New Overload Protection

R85 cutterbars feature a single removable key on the outside hubs that will shear if the disc comes in contact with an object that stops its movement. The hub can then be removed and the key replaced, allowing the operator to quickly get back to cutting.

Double Windrow Attachment Option

Double Windrow Attachment Option

MacDon’s double windrow attachment feature lets you lay up to 48' (14.6 m) of crop in a single windrow. This is ideal for today s large forage harvesters and can translate into significant time and fuel savings for producers who employ this feature.

DOUBLE WINDROW ATTACHMENT WINDROW SIZE PLACEMENT

R Series

Double Placement          32 ft. (9.8 m)

Triple Placement             148 ft. (14.6 m)

 1 Triple placement is possible with installation of GPS Auto Steer on your Windrower

Widest Conditioning Rolls on the Market

Widest Conditioning Rolls on the Market

To improve conditioning performance, the R85 Rotary Disc has been equipped with the widest steel on steel rolls on the market (118"/3000 mm). Wider rolls increase the amount of crop contact, improving crimping performance and ensuring thorough conditioning of the plant stem. These conditioning rolls also feature a design which more aggressively pulls crop away from the cutting discs, for reduced power requirements and improved performance.

Skid Shoes

Skid Shoes

Improves the placement of the cutterbar in relation to the ground, thereby reducing wear on the cutterbar and enhancing the in field performance of the header.

Gauge Rollers

Gauge Rollers

Attached behind the cutterbar to reduce wear on the cutterbar wear plate and improve the movement of the header over uneven terrain, as well as in sand or firm soil conditions. Optional for A and 16' R Series.

SPECIFICATIONS

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R85 ROTARY DISC HEADER SPECIFICATIONS

Size13 ft. (4 m)16 ft. (4.9 m)
Weight3,000 lb. (1360 kg)4,300 lb. (1955 kg)
Drive (Maximum Hydraulic Power)130 HP (97 kW)231 HP (172 kW)
Cutting Speed/Knife Tip Speed1,800 to 2,600 RPM/131 MPH (210.8 km/h) to 189 MPH (304 km/h)
Cutting Angle Range0-8˚ below horizontal
Number of Cutting Discs/Blades8/210/2
Hay Conditioner Roll: Type/ LengthIntermeshing steel bars, 118 in. (3000 mm)Intermeshing steel N-bars, 118 in. (3000 mm)
Gear Train ProtectionShearable key in each spindle
OptionsTall crop divider, gauge roller (only available for 16 ft./4.9 m model), adjustable skid shoes, double windrow attachment, hydraulic couplers for quick attachment