The new Big M 420 from Krone
New engine, new styling and more operator comfort
Spelle, September 2011. Krone’s new Big M 420 self-propelled mowers are powered by new common-rail engines from MAN, which deliver more horsepower with greater economy. In addition, the new models feature a cab that presents an absolutely new dimension in operator comfort.
Equipped with a 400hp MAN common-rail engine, the new Big M 420 has all it takes to deliver extraordinary performance in dense crops and on slopes. The new engine uses SCR technology with AdBlue to comply with Stage III B/EPA (Tier 4 interim) exhaust emission standards and, as a result, provides maximum fuel effi-ciency.
Like its predecessors, the Big M 420 features automotive trans-mission, which controls engine speed automatically to match it to the ground speed selected and the current load on the driveline.
The cooling system, too, received an update to match the enor-mous engine power. Evidence of this is the large radiator with rota-ry screen and exhaust system. Aspiration is from above, which brings the advantage of much cleaner air. This automatic cleaning process prevents the engine from overheating and reduces the time spent on cleaning.
Brand new ‘Silent Space’ control room
The new engine technology is complemented by an absolutely new cab design and enhanced operator space. Here, operators will enjoy an unprecedented view – courtesy of larger glazing and slimmer posts. High build quality and improved damping result in low noise levels while climate control and a mobile cool box give unmatched comfort. Both features are standard specification on the new Big M.
The new Krone-developed joystick has been customized to the self-propelled mower conditioners and combines state-of-the-art ergonomics with comprehensive multi-functionality. For example, a cross control raises/lowers all mowers at the same time on the headland. The same control also operates the optional self-levelling feature on slopes.
Each mower is assigned its own control on the joystick, which ad-justs each mower separately to its individual area of work – a boon in awkward plots, for example.
Two further buttons control the hydraulic cutting height adjustment system, which is an optional feature. It allows operators to store and retrieve two cutting heights, thereby reducing stress on the operator and allowing him to adjust the machine quickly and simply to a wide variety of harvest conditions.
The cutterbars
The clear focus on operator comfort is also reflected in the overall level of specification. For example, Big M 420 features the new heavy duty mower bed with SafeCut auto-reset system,
Like the Big M 400, the Big M 420 is available with a choice of three conditioner versions. The high-performance CV conditioner offers a 9.7m work width and uses freely pivoting V-type steel tines, which give extremely intensive conditioning. The rotor speed is set conveniently on the gearbox (700rpm and 1,000rpm).
Leafy crops such as alfalfa and clover require gentle treatment, which comes from the ultra-durable nylon bristle rollers of the high-performance CRi conditioner from Krone, whereas a steel roller version is available to condition tall and dense crops such as Sor-ghum-Sudan grass. Both CRi versions offer a 9m work width and 25cm roller diameter.
Feed augers are available for the two side mowers. This Krone Big Swath System transfers the conditioned crop from the conditioner to the middle of the machine without the material dropping to the ground and becoming contaminated. This Big Swath merging sys-tem operates in combination with both the CV conditioner and the CRi conditioner, and when the auger hoods are open, it spreads the crop across the full width.
New tyres
Innovative diamond-treaded CARGO XBIB tyres are available for the Big M 420 to run on in delicate crops such as Lucerne. This special tyre benefits from a substantially larger contact area and a pressure as low as 1.0bar to minimize the load on the root stock, protect the soil and ensure fast crop re-growth.
Equipped with a 400hp MAN common-rail engine, the new Big M 420 has all it takes to deliver extraordinary performance in dense crops and on slopes. The new engine uses SCR technology with AdBlue to comply with Stage III B/EPA (Tier 4 interim) exhaust emission standards and, as a result, provides maximum fuel effi-ciency.
Like its predecessors, the Big M 420 features automotive trans-mission, which controls engine speed automatically to match it to the ground speed selected and the current load on the driveline.
The cooling system, too, received an update to match the enor-mous engine power. Evidence of this is the large radiator with rota-ry screen and exhaust system. Aspiration is from above, which brings the advantage of much cleaner air. This automatic cleaning process prevents the engine from overheating and reduces the time spent on cleaning.
Brand new ‘Silent Space’ control room
The new engine technology is complemented by an absolutely new cab design and enhanced operator space. Here, operators will enjoy an unprecedented view – courtesy of larger glazing and slimmer posts. High build quality and improved damping result in low noise levels while climate control and a mobile cool box give unmatched comfort. Both features are standard specification on the new Big M.
The new Krone-developed joystick has been customized to the self-propelled mower conditioners and combines state-of-the-art ergonomics with comprehensive multi-functionality. For example, a cross control raises/lowers all mowers at the same time on the headland. The same control also operates the optional self-levelling feature on slopes.
Each mower is assigned its own control on the joystick, which ad-justs each mower separately to its individual area of work – a boon in awkward plots, for example.
Two further buttons control the hydraulic cutting height adjustment system, which is an optional feature. It allows operators to store and retrieve two cutting heights, thereby reducing stress on the operator and allowing him to adjust the machine quickly and simply to a wide variety of harvest conditions.
The cutterbars
The clear focus on operator comfort is also reflected in the overall level of specification. For example, Big M 420 features the new heavy duty mower bed with SafeCut auto-reset system,
Like the Big M 400, the Big M 420 is available with a choice of three conditioner versions. The high-performance CV conditioner offers a 9.7m work width and uses freely pivoting V-type steel tines, which give extremely intensive conditioning. The rotor speed is set conveniently on the gearbox (700rpm and 1,000rpm).
Leafy crops such as alfalfa and clover require gentle treatment, which comes from the ultra-durable nylon bristle rollers of the high-performance CRi conditioner from Krone, whereas a steel roller version is available to condition tall and dense crops such as Sor-ghum-Sudan grass. Both CRi versions offer a 9m work width and 25cm roller diameter.
Feed augers are available for the two side mowers. This Krone Big Swath System transfers the conditioned crop from the conditioner to the middle of the machine without the material dropping to the ground and becoming contaminated. This Big Swath merging sys-tem operates in combination with both the CV conditioner and the CRi conditioner, and when the auger hoods are open, it spreads the crop across the full width.
New tyres
Innovative diamond-treaded CARGO XBIB tyres are available for the Big M 420 to run on in delicate crops such as Lucerne. This special tyre benefits from a substantially larger contact area and a pressure as low as 1.0bar to minimize the load on the root stock, protect the soil and ensure fast crop re-growth.
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