The deep-working 425 Disk offers 9 - or 11-inch spacing — perfect for primary tillage in stalks and stubble. And the one-piece welded mainframe is tough enough for rough ground.
The hitch can be set to work directly behind the tractor or offset to the right or left, which is ideal for orchards or vineyards.
Moving the tongue on the hitch bar (1) provides a course adjustment.
Changing the angle of the hitch tongue, through a series of holes (2), fine-tunes adjustments.
The clevis (3) can be assembled so a disk harrow can be used with tractors having either a straight or open-type drawbar.
A safety chain and hose support are included in base equipment.
The mainframe on 225 and 425 Offset Disks is made of one-piece, heavy, structural steel tubing to resist torsional forces on the frame:
The 225 Disk is available in 229-mm (9-in.) blade spacing, and the 425 Disk is available with 229-mm (9-in.) or 279-mm (11-in.) blade spacing.
Blade spacing recommendations for best performance are as follows:
229-mm (9-in.) spacing
279-mm (11-in.) spacing
|Seedbed preparation||All primary tillage|
|Chemical incorporation||Heavy residue conditions|
|Light primary tillage|
|Average residue levels|
Cone-type or spherical blades are available in a variety of sizes with a solid or cutout design.
Right rear gang is tapered and includes two smaller disks to feather the soil.
|Blade size (diameter)||Blade taper size (diameter)|
|559 mm (22 in.)||One 508 mm (20 in.) and one 457 mm (18 in.)|
|610 mm (24 in.)||One 559 mm (22 in.) and one 508 mm (20 in.)|
|661 mm (26 in.)||One 610 mm (24 in.) and one 559 mm (22 in.)|
A 356-mm (14-in.) diameter furrow filler (arrow) is available to further smooth and level the soil.
A scraper is included with the furrow filler.
|Select up to 4 models to compare specifications||
|Spacing option A||229 mm 9 in.|
|Option 1||2.79 m 9.17 ft, in.|
|Option 2||3.23 m 10.58 ft, in.|
|Option 3||3.68 m 12.08 ft, in.|
|Option 4||4.11 m 13.50 ft, in.|
|Option 5||4.78 m 15.67 ft, in.|
|Spacing option B||279 mm 11 in.|
|Option 6||2.67 m 8.75 ft, in.|
|Option 7||3.23 m 10.58 ft, in.|
|Option 8||3.76 m 12.33 ft, in.|
|Option 9||4.01 m 13.17 ft, in.|
|Option 10||4.78 m 15.67 ft, in.|
|Spacing option A||229 mm 9 in|
|Miles per hour||6.4 to 9.7 km/h 4 to 6 mph|
|Horsepower required||41 to 112 kW 55 to 150 hp|
|Option 1||Parallel-lift bar and 5-leaf spring for front-to-rear leveling and increased relative pressure on front or rear gangs|
|Option 1||Mechanical depth stops|
|Standard||1 selective control valve (SCV) required|
|Standard||9-pin connector for warning lights|
|Type||Combination hitch with right or left offset options|
|Tubing||Structural steel - 3x5x3/203 mm 8 in.|
|Angle||Front 28 to 48 degree (angle) Rear 28 to 48 degree (angle)|
|Tubing||Front Structural steel - 4x6x1/102 mm 4 in. Rear Structural steel - 4x6x1/102 mm 4 in.|
|Gang bolt||Round - 38 mm 1.5 in.|
|Gang standard||Rigid nodular iron|
|Bearings||Triple-sealed ball bearings with wear guards (no lubrication needed unless grease fittings are installed)|
|Option 1||Spherical blade with scraper: 356 mm 14 in.|
|Spacing||229 or 279 mm 9 or 11 in.|
|Size||Option 1 Cutout cone front and solid cone rear or Cutout spherical front and solid spherical rear - 610 x 4.5 mm 24 x 0.177 in. Option 2 Solid cone or Cutout cone front and solid cone rear - 610 x 6.5 mm 24 x 0.256 in. Option 3 Cutout cone or cutout cone front and solid cone rear or cutout spherical front and solid spherical rear - 660 x 6.5 mm 26 x 0.256 in.|
|Mainframe wheels and tires||Option 1 Two 15-8 wheels with 11L-15 10PR tires Option 2 Two 15-8 wheels less tires Option 3 Two 16-6 wheels less tires|
|Wingframe wheels and tires||Option 1 Wheel tread spacing - 198 cm 78 in.|
Product modules and features has been compiled for worldwide circulation with general information, pictures, and descriptions of features not available in all countries. In some countries, products and accessories may require modifications or additions to ensure compliance with local regulations. Contact your local John Deere dealer for details.