R1 Series

R1 Series Rotary Disc Headers

Speed, precision, power - these are the main features of the MacDon swather mower M1170 and the R1 rotary mower. Our patented CrossFlex ™ independent suspension and the flat, front-mounted rotor blades achieve a smooth, clean cut even when driving quickly at speeds of up to 29 km / h (18 mph).

*Some products and/or options may not be available in all markets. See your MacDon Dealer for availability.

The HayMaker

Our patented CrossFlex™ suspension and low-profile, forward-mounted cutting discs help deliver a smooth, clean cut at in-field speeds of up to 14 mph (22.5 km/h). The two-stage controls allow for faster and more precise positioning of the header lift, and customizable One-Touch-Return buttons can be programmed to control the header’s height, tilt, and cutting speed.


Our low-profile, forward-mounted cutting discs provide a flat header angle, resulting in a cleaner, smoother cut. Our cutterbar design is backed by MacDon’s 3 year cutterbar warranty. That’s our way of ensuring worry-free harvesting performance.


The R1 features an amazing in-cab view of the crop flow coming out of the back of the header. Being able to see the crop lets operators monitor the quality of the windrow that’s being laid down on-the-go. The header forward position also allows easy access to the adjustable windrow forming shields.


Each of the disc spindles on the R1 Series cutterbar feature a shear pin. These pins are designed to shear if the disc comes in contact with any object large enough to stop its movement. The disc then moves up and out of the path of the adjacent discs, reducing the risk of serious damage to the cutterbar. The shear pin can be replaced in-field, letting operators get back to cutting quickly.


Featuring the industry’s widest conditioning roll at 328 cm (129”), and 3 interchangeable conditioning options. You can choose: Steel Inter-Meshing, Polyurethane Inter-Meshing, or No Conditioner option. The R1 lays down well-conditioned wide to narrow windrows to suit a variety of conditioning needs. The wide rolls increase the amount of crop contact, improving crimping performance and ensuring thorough conditioning of the plant stem.

Steel Inter-Meshing Rolls

This crimp style is especially effective for stiff or solid plant stem material. It produces well conditioned windrows over a wide range of widths and is ideal for high-volume crops, which require aggressive feeding through the header. In smooth-stemmed crops, the steel inter-meshing roll action promotes even plant dry down by creating uniform crimps on the plant stem without bruising the delicate leaves. Steel rolls are extremely durable and require minimal maintenance.

Polyurethane Inter-Meshing Rolls

Polyurethane delivers a combination crimp and crush action while being more gentle on plant leaves. The crushing action of the 328 cm wide (129”) polyurethane rolls produce a windrow that promotes quick, even dry down of crops like alfalfa and alfalfa grass mixes. Polyurethane is also very effective on fine-stemmed plants with solid stems, like native hay, timothy, and Bermuda grass.

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Operators Manual
Parts Documents
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R1 Rotary Disc Header Specifications
Size4 m (13’)
Weight (No Conditioner)1364 kg (3007 lbs)
Number of Cutting Discs / Blades8 / 2
Drive (Maximum Hydraulic Power)94 kW (127 HP)
Cutting Speed / Knife Tip Speed1800 to 2600 rpm / 211 km/h - 290 km/h (131 mph to 180 mph)
Cutting Angle Range0-8˚ below horizontal
Gear Train Protection (Cutter Bar)Shear pin in each spindle
Hay Conditioner Options: Type / LengthInter-meshing steel / 328 cm (129”), polyurethane rolls / 328 cm (129”), no conditioner
OptionsTall crop dividers
Windrower to Header Compatibility
M1170NT✓Up to 10.6 m (35')
M1240✓4.9 m (16')✓4 m (13')
M205✓4.9 m (16')✓**
* Double Windrow Attachment Not Available
** R2 Grass Seed Special Header is not compatible with M205

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