R280 Duty Disc Mower | Douglas Lake Equipment & Avenue Machinery
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Rear-mounted disc mowers ActiveMow

  • Side-mounted mowers offering huge up/down travel
  • Coil springs optimising the ground pressure and adjusting without tools
  • Pto-shaft driveline for frictional connections
  • Robust and fully welded cutterbar without inner shoe
  • Quick-change blades
  • SafeCut: Individually protected discs
  • SmartCut: Stripeless cuts thanks to optimum blade overlaps
  • Compact in transport as the mower inclines to the middle of the tractor for optimum weight distribution and visibility

The cutterbar

  • Fully welded: Robust, sealed and permanently lubricated
  • Long-lasting satellite drive with massive spur gears: quiet running and top efficiency
  • No inner shoe for trouble-free cutting

The enclosed and fully welded cutterbar meets the highest quality standards and operates dependably and leak-free over many years of hard work. Massive and oil-immersed spur gears impress by very quiet and reliable running in sustained peak-load operation.

The wedge-shaped cutterbar offers many height setting options. The spur gears run in massive double bearings, allowing the cutterbar to handle extremely high loads.

The established satellite drives were developed by KRONE and have proven extremely well all over the world for as many as 30 years now.Its massive spur gears with up to 59 teeth transmit the drive power down to the very last disc. The large-diameter gears rotate at reduced speeds, with a higher number of teeth meshing with the neighbouring gearwheels for even quieter running, ultimate efficiency and maximum longevity. The auxiliary gears drive one disc each and as a result are exposed to only minimum loading.

The cutterbar is driven by the right-angle gearbox just behind the inner top hat – for blockage-free operation on headlands and in awkward patches.


With some discs turning in pairs towards each other and others turning away from each other, it was necessary to redesign the degree of blade overlap to ensure cleanest cuts. For stripeless cuts in light and young crops, we have therefore increased blade overlaps on the discs turning outwards. In addition, the blades turning to the rear are set further apart to encourage a smooth flow of large volumes of crop.

We welded curved stops between the individual skids that protect the cutterbar from damage and also contoured the underside of the stops in such a way that no material can build up here and instead flows smoothly to the rear.

Perfect in every detail

  • Fast blade changes for high productivity
  • Replaceable pins and wear parts
  • Wide skids protecting the cutterbar

There are many reasons for choosing an ActiveMow disc mower. Just think of the quickchange blades, the inexpensive wear parts and the perfect disc arrangement for stripeless cuts.

Quick-change blades are considered a must by many farmers and contractors. The blades are quick and easy to reverse or replace in situ.

Spare blades are neatly stored in this mobile drawer.

The curtain folds up for cleaning and replacing the blades – a compact design that offers superb accessibility.

AM – the working formula

  • Tractor attachment with three-point headstock
  • Large travel range for superior performance in mountainous terrain
  • Direct and frictional driveline ensures no power is lost
  • Working a full width by refitting pin on the link arms

The side-mounted linkage is compact, low in weight and gives the mower large up/down travel. The ActiveMow mowers follow any ground contours and have proven absolutely well in mountain applications.

The sturdy three-point headstock features a bracket to store the driveshaft after the machine is removed from the tractor.

Drive power flows through a frictional driveline of pto shafts and gears for maximum effciency even in diffcult conditions.

Optimum ground pressure from 2.05 m to 3,61 m

  • Coil springs provide the cutterbar suspension, optimise the ground pressure and ensure uniform cuts
  • The springs are conveniently adjusted by resetting pins
  • Extremely responsive for top contouring

Manually adjusted, the ActiveMow suspension springs rapidly adapt the ground pressure for the machine to produce perfect cuts in undulating terrain and at high work rates and as a result of this clean and high-quality forage as well as a fast and uniform re-growth.

  • The low-deadweight ActiveMow R 200 has only one coil spring that provides infinitely variable adjustment.
  • The ActiveMow R 240 has two coil springs that are adjusted without tools. The inboard spring is adjusted on a spindle, the outboard spring by refitting a pin.
  • ActiveMow R 280, R 320 and R 360 have three adjustable coil springs – one that adjusts the inboard arm and two that control the outboard arm.

Practical and well designed

Stands are available as an option to store the machine either in work or transport position and save space in the machine shed during winter storage. The side guard folds automatically when ActiveMow moves into transport or park position, thereby reducing the machine’s height.

For convenient attachment/removal of the machine, release the spring tension simply by operating the latch on each spring. Such latches are specified on the ActiveMow R 240, R 280, R 320 and R 360 models where they eliminate the need for unhooking the coils.

To get ready for transport, ActiveMow folds into a 100° angle position behind the tractor. Taking weight off the right wheel, it increases the road stability of the combination. The operator enjoys an unobstructed rear view in the mirror.

Windrowing or spreading

The eccentric bearings are positioned in such a way that the discs feed the material to the middle of the machine for the tractor to straddle it. With discs spinning in the A sense of rotation, ActiveMow R 200, R 240, R 280 and R 320 form one single swath whereas the ActiveMow R 360 forms two swaths with its discs also spinning in the A sense of rotation.

Swathing is the preferred option in wet and boggy terrain so the tractor wheels will not run on the crop for loss-free pick-up or tedding.

With discs spinning in the B sense of rotation, ActiveMow spreads the material across the full cutting width. Here the discs turn in pairs towards each other.

Spreading the material across the full machine width instead of swathing, it exposes a larger surface to the sun and wind for boosted and more uniform wilting.


Replacing blades with the help of air

  • Fastest blade changes on KRONE ActiveMow and EasyCut disc mowers and the SP BiG M mower conditioner
  • Easy, fatigue-free and convenient blade changes
  • Ideal for applications that require frequent blade changes

It‘s easy: Place the QuickChange claw spacer in the space between the disc with blade retaining pin and the blade carrier.

Operate the lever, applying air to the claws and pressing down the blade carrier.

The blade retaining pin is now exposed and you can remove, replace or reverse the blade. It‘s safe, simple and fast.

Position the new or reversed blade under the retaining pin and operate the lever again.

This removes the air and releases the claws, which in turn releases the knife carrier so this jacks up, locking home the blade retaining pin.

The new blade is now secured in position.

On-site use: Provided the tractor is equipped with an air compressor, QuickChange is easily used in the field.

Available At


1521 Sumas Way
Abbotsford, British Columbia V2S 7P4

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7155 Meadowlark Rd
Vernon, British Columbia V1B 3B6

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1090 Stevens Rd
West Kelowna, British Columbia V1Z 1A3

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Price, payments and models featured throughout may vary by dealer. Some restrictions apply. Offers are subject to change, cancellation or extension at any time without notice or obligation. For all offers: taxes, applicable fees (including, but not limited to, governmental environmental fees, administration fees, set-up fees, dealer fees, and delivery fees), insurance and registration are extra. Specifications, features, illustrations and equipment shown online are based on the latest available information at the time of publication. Although descriptions are believed to be correct, accuracy cannot be guaranteed. We reserve the right to make changes at any time without notice or obligation, specifications, accessories, materials, models, prices, payments, and other information.

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