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Overview

Powerful monster tackles every job: KRONE proudly presents BiG M 420 – a versatile specialist that takes care of all your mowing applications. BiG M 420 is the machine that gears you up for every task. Just look at its high-output CV conditioner or CRi roller conditioner or take the spreading or swath merging options. Cutting at an enormous work width of up to 9.7 metres (31'10") and offering tremendous power reserves while distributing the weight uniformly, BiG M 420 produces clean and high-quality forage without affecting the re-growth of crops – in any condition and any field around the world. One does it all: BiG M 420 delivers total efficiency – even in small fields. The machine scores perfect on handling and fast travelling between fields. Opening up small and awkward fields is as easy as it can get – thanks to the machine‘s great maneuverability and the option of using the mowers separately. This machine is up and working while others are still preparing for work.

Features

The Cab
Maximum operator comfort

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

The Driveline
Safe and convenient

  • Infinitely variable ground speed control from joystick
  • Reduced engine speed in road travel
  • Standard four-wheel drive
  • Standard front-axle suspension

The Engine

  • 309 kW / 415 hp (SAEJ1995) Cat® C13 ACERT™ engine
  • 12.5 liter displacement
  • Tier 4 interim / Stage IIIB compliant using the Cat® Regeneration System
  • Quiet running and fuel-efficient in the field and on the road

The EasyCut cutterbar

  • 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

The Mowers

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

Conditioner
Three conditioner versions

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


Swath merging

  • 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

 

Specifications

 Model BiG M 420 CV BiG M 420 CRi BiG M 420 CM*
Engine type MAN D 2066 LE 121
No. of cylinders 6 6 6
Displacement 10.5 10.5 10.5
Max. output to ECE R120
at 1,800 rpm             kW/hp

311/423

311/423

311/423
Max. output to ECE R24
at 1,800 rpm             kW/hp

300/408

300/408

300/408
Rated speed rpm 1,800 1,800 1,800
Fuel tank capacity       litre 700 700 700
Ground drive      
Model Infinitely variable hydrostatic drive with wheel motors
Work rate                       up to km/hr 20 (12 mph) 20 (12 mph) 20 (12 mph)
Transport speed            up to km/hr 40 (25 mph) 40 (25 mph) 40 (25 mph)
4WD standard standard standard
Axle separation standard standard standard
Axles      
Steering angle                   Degrees 53 53 53
Rear axle steering Yes Yes Yes
Steered front axle Yes Yes Yes
Mowers      
No. of mowers / toppers 3 3 3
Work width                                mm 9,720 (31'11") 9,000 (29'6") 9,000 (29'6")
Conditioner speed                     rpm 700/1.000 760 2.100
Conditioner model V-type steel tines rubber or steel roller Flail topper
No. of discs 4/side mower
5 front mower
5 / mower
No. of top hats 4/side mower
2 front mower
2 / mower
Blade attachment Quick-change blades Quick-change blades
Cab      
Air seat standard standard standard
Passenger seat standard standard standard
Climatronic with cool box standard standard standard
BoIn-cab information system standard standard standard
Overall dimensions      
Transport width                                                      mm 3,000 (9'10") 3,000 (9'10") 3,000 (9'10")
Transport length                                                     mm 8,180 (26'10") 8,180 (26'10") 8,180 (26'10")
Transport height                                                     mm 4,000 (13'2") 4,000 (13'2") 4,000 (13'2")
Weight depending on specification       Approx. kg/lbs 14,500 / 31,966.7 14,500 / 31,966.7 14,500 / 31,966.7
Weight distribution front/rear axle              Approx. % 60/40 60/40 60/40
Tyre size      
Front: Michelin MEGAXBIB 750/65 R26 standard standard standard
Rear: Michelin MEGAXBIB 580/70 R26 standard standard standard
Front: Michelin CARGOXBIB 750/60 R30.5 option option option
Rear: Michelin CARGOXBIB 600/60 R30.5 option option option

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