• Generous glazing for perfect panoramic view
• Highest seating comfort, easiest operation
• Standard climate control
• Easy joystick operation

‘Silent Space ‘– The name says it all
A generous and quiet space – that’s the new KRONE cab. Catering for all operator needs during those long working days well into the night, the interior was developed along the latest ergonomic parameters and offers such convenience features like passenger seat, climate control and electric cool box. Logically grouped, all buttons offer fingertip control and full overview.

• 311 KW / 423 hp MAN D2066 engine
• More than 43hp per metre cutting width
• Quiet running and fuel-efficient in the field and on the road
• New cooling system with active dust exhaustion

Powerful and soft
Despite pumping out an enormous power of up to 423 hp, this new and advanced CommonRail, inline, six-cylinder MAN engine runs even quieter than its predecessor model. Equipped with SCR Selective Catalyst Reduction technology to inject liquid urea into the exhaust fumes, the unit complies with Emission Stage IIIB / Tier 4i regulations. The advantage is obvious - there is no need for exhaust gas recirculation, so that the engine can generate its full power at greater efficiency.

• Fully welded & heavy-duty
• SafeCut shear-bolt protection for each disc
• Satellite driveline smoothes the power flow inside the cutterbar
• Tried and tested in the most difficult conditions

Efficiency and safety
The three disc mowers on BiG M 420 are well-proven technology, which is sourced from our EasyCut mower range. The fully welded and heavy-duty cutterbar with satellite driveline provides maximum stability while the power flows through the rear gearbox and down massive and quiet-running spur gears to drive the satellite gears and the discs. The discs mount is a very forward position and guarantee clean cuts thanks to perfect overlapping. All BiG M 420 models feature the standard SafeCut protection system, which gives the best possible protection when the cutterbar hits a foreign object.

• Direct driveline via 4-groove poly belt
• Coil spring suspension
• Mowers operate separately or in combination
• Mowing, conditioning, swathing – three operations in one pass

Carefully designed for efficiency
The innovative KRONE BiG M 420 driveline allows operators to achieve work rates of more than 15 hectares per hour. After all, short and direct drivelines offer the best efficiency. From the axial engine, the power flows directly to the transfer box, which in turn splits the flow and transfers it to the individual mowers. Extra strong 4-groove poly V-belts transmit the power directly to the side mowers, which suspend from massive coil springs in their centre of gravity. The design gives optimum floating and the tension of the coil springs is conveniently adjusted from the cab. The pushed front mower benefits from large travel to adapt perfectly to all ground contours.

• Conditioning at full work width
• Intensive or gentle treatment
• Toppers are available to boost machine versatility

The conditioner versions
Quality is as important as efficiency. To ensure the crop dries rapidly and uniformly, it is recommended to use a conditioner, which rubs off the natural wax skin for the moisture to evaporate faster. KRONE offers a choice of three conditioner versions. The CV conditioner features V-tines made from steel and offers two speeds (700rpm and 1,000rpm) whereas the CRi roller conditioner comes either with two profiled polyurethane rollers or with steel rollers to treat vulnerable and broad-leaved crops, such as legumes.

The CV conditioner for 9.7m working widths: The V-type steel tines on the 66cm diameter rotor feed the crop past a baffle plate to provide intensive conditioning. The operator sets the rotor speed conveniently on the gearbox to 700rpm or 1,000rpm and adjusts the baffle plate steplessly.

The CRi conditioner for 9.0m working widths: These polyurethane rollers are the preferred option when cutting leafy crops such as lucerne and clover. The chevron profiled rotors are 25cm in diameter and provide gentle crop treatment. Both rollers are gearbox driven.

The CRi conditioner for 9.0m working widths: The steel rotor suggests maximum service life. Crushing and splicing the stems actively, it achieves best results in stalky crops.

• Switches to wide distribution at the touch of a button
• Controls all spreading hoods separately Memory function
• Crops are merged without dropping to the ground – no contamination

Merging more than 9 metres (29'6") of crop
This optional merging system groups  all passes into one – cutting, conditioning and windrowing. Integral augers in the two side mowers feed the conditioned material directly to the swath left by the front mower. This optional system offers extraordinary benefits in harvest chains that do without tedding and swathing. The system produces excellently clean swaths in grass, lucerne and wet silage, which are easily picked up by the following forager.

Swathing: When the hoods are closed, the augers transfer the conditioned material to the centre of the machine and place it into one single swath. The system leads to a significant reduction in crop contamination.

Wide spreading on one side: Open the hood on one mower only and BiG M swathes the material to one side. In one up and down operation, the machine is then cutting at widths of up to 19.4 metres and swathes the material down to a width of only 12 metres. These swaths are easily gathered by a Swadro 1400.

Spreading across the full width: When the hoods are open, the machine throws the conditioned material over the rotating augers and spreads it across the working width for uniform and rapid drying. This eliminates the tedding pass.