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Overview

The toughest, smoothest disk ripper on earth

 

Nowhere on earth can you find a disk ripper that does all this: Size and manage residue. Penetrate and shatter the compaction layer. Bury and mix residue. And help level the soil profile. All in just one pass.

 

More muscle

 

Heavyweight C-spring standards add both muscle and flex, protecting the gangs from obstacles. The result: consistent disking depth, even in hard-packed ground and rocky fields.

 

The largest gang bolt in the industry for extra reliability. No matter what your field conditions are, the gangs on the 2720 Ripper won’t falter for greater reliability. All bolts are designed with an innovative easy-tension feature.

 

Ripper shanks shatter hardpan soils like nothing else on earth, eliminating yield-robbing soil compaction up to 15-inch (38.1 cm) depths. Along with its heavyweight 24-inch blades, the 2720 Ripper delivers improved residue flow in the toughest conditions.

 

Shattering expectations

 

Industry-exclusive active hydraulic rolling basket option helps the 2720 Disk Ripper effectively break up clods, slabs and root balls — delivering the smoothest, most level soil profile available from a disk ripper.

 

No need to grease the gang bearings — ever. Sealed maintenance-free bearings use a high-density polymer liner so the bearing can dynamically align the shaft in challenging field conditions.

 

Exclusive hydraulic fore/aft leveling lets you make easy adjustments as field conditions change to keep the disk level from the comfort of your cab.

 

Easily tension disk gang bolts
    • 50-mm (2-in.) disk gang bolts

      50-mm (2-in.) disk gang bolts

    • Gang tension system

      Gang tension system

    John Deere's 2600 Series Disks provide an innovative approach to tension disk gang bolts. 

Level-lift™ hitch/turnbuckle holds the frame level
    • 2720 Level-lift hitch

      2720 Level-lift hitch

    The Level-lift hitch/turnbuckle:

    • Holds the frame level fore and aft for consistent depth throughout its range of operating depth, without the need to re-level the machine when the depth is changed
    • Allows the operator to go from the working position to transport without re-leveling the machine

    A single 152-mm x 254-mm (6-in. x 10-in.) hitch tube enables tighter turns on the headlands without the inside tractor dual interfering with the hitch tube.

     

    The turnbuckle is used to adjust fore-aft leveling:

    • Convenient, easy adjustment to match the hitch to the tractor drawbar
    • Locking mechanism makes it easy to adjust turnbuckle as required; no jam nut to tighten
    • Adjustment is made only once for each tractor
  • The turnbuckle-adjustment wrench is in base equipment:

    • Store for easy accessibility
    • Also used to adjust eye bolts for wing depth control cylinders
Rolling baskets offer increased levelness
    • Hydraulic round-bar rolling basket

      Hydraulic round-bar rolling basket

    • Hydraulic knife-edge rolling basket

      Hydraulic knife-edge rolling basket

    The industry-exclusive hydraulic rolling baskets found on the 2600 series disks and vertical tillage are also available on the 2720 Disk Ripper. The baskets come in a round-bar or knife-edge configuration. 

    Below are the benefits of each basket:

    • Round-bar – does a better job of busting clods and firming the ground.  Slightly more prone to plugging over the knife edge because there are more bars.  Works best in drier conditions.
    • Knife edge – slices through clods. Works best in heavier, wet soils. Knife’s grab dirt and recycle more to size clods more effectively. Cleans out very well in the field. 

    The rolling baskets can be set in three different positions based on their hydraulic operation:

    1. Down Pressure - a gauge on the front of the 2720 allows operators to set basket down pressure to ensure constant ground contact.  Down pressure also allows for better sizing of slabs, clods, and rootballs and will leave a level soil profile.
    2. Float - the baskets can be put in the float position using the selective control valve (SCV) on the tractor. This allows the weight of the basket to roll over the ground. 
    3. Raised - the baskets can be lifted off the ground when encountering a wet area of the field to help eliminate any chance of plugging.

    Down pressure should always be set using the gauge and operated from the cab.

    • Baskets are attached to the frame by a welded gusset, not straps and bolts. This makes the basket attaching method much more reliable to withstand harsh-field conditions.
    • Basket attachment to frame

      Basket attachment to frame

    NOTE: Rolling baskets are not available on the 7-standard rigid narrow transport model.

    Contact a John Deere dealer for more information on
     Round-bar rolling baskets and Knife-edge rolling baskets.

Walk-Over™ tandem wheels provide added support and stability
  • Tandem wheelsTandem wheels

    2720 Disk Ripper configuration Tire option codes Base or optional Tire option description Option codes for finishing components Description of finishing components
    3.8 m (12.5 ft)
    5 Standards
    28 disk blades
    4510 In base price Walk-Over Tandem Wheels 57.2 mm (2.25-in.) Diameter Plug-in Spindles and 6 bolt hubs - Four 11L-15 FI D LR Tires --- ---
    4512 Optional Walk-Over Tandem Wheels 57.2 mm (2.25-in.) Diameter Plug-in Spindles and 6 bolt hubs - Four 11L-15 FI F LR Tires 6040 Round bar rolling basket
    6041 Knife edge rolling basket
    4518 Optional Walk-Over Tandem Wheels 57.2 mm (2.25-in.)Diameter Plug-in Spindles and 8 bolt hubs - Four 340/65R18 Goodyear® Tires 6040 Round bar rolling basket
    6041 Knife edge rolling basket

    5.4 m (17.5 ft)
    7 Standards
    40 disk blades

    4512 In base price Walk-Over Tandem Wheels 57.2 mm (2.25-in.) Diameter Plug-in Spindles and 6 bolt hubs - Four 11L-15 FI F LR Tires 6040 Round bar rolling basket
    6041 Knife edge rolling basket
    4518 Optional Walk-Over Tandem Wheels 57.2 mm (2.25-in.) Diameter Plug-in Spindles and 8 bolt hubs - Four 340/65R18 Goodyear Tires 6040 Round bar rolling basket
    6041 Knife edge rolling basket

    6.9 m (22.5 ft)
    9 Standards
    52 disk blades

    4518 In base price Walk-Over Tandem Wheels 57.2 mm (2.25-in.) Diameter Plug-in Spindles and 8 bolt hubs - Four 340/65R18 Goodyear Tires 6040 Round bar rolling basket
    6041 Knife edge rolling basket
    4520 Optional Walk-Over Tandem Wheels 57.2 mm (2.25-in.) Diameter Plug-in Spindles and 8 bolt hubs - Four 340/65R18 Michelin™ Tires 6040 Round bar rolling basket
    6041 Knife edge rolling basket
    8.4 m (27.5 ft)
    11 Standards
    66 disk blades
    4518 In base price Walk-Over Tandem Wheels 57.2 mm (2.25-in.) Diameter Plug-in Spindles and 8 bolt hubs - Four 340/65R18 Goodyear Tires --- ---
    4520 Optional Walk-Over Tandem Wheels 57.2 mm (2.25-in.) Diameter Plug-in Spindles and 8 bolt hubs - Four 340/65R18 Michelin Tires 6040 Round bar rolling basket
    6041 Knife edge rolling basket

    NOTE: The option code 6095 included in the base price of the ripper. Option 6095 is listed under the finishing components and is less round rolling basket.

  • Michelin 340/65R18 tiresMichelin 340/65R18 tires

    Walk-Over tandem wheels provide added support and stability for smoother operation in the field.

     

  • Wheels in front of ripper shanksWheels in front of ripper shanks

    The wheels are located behind the front disk gangs and in front of the ripper shanks. This allows the wheels to run on ground that has been leveled by the front disk gangs for more stable operation.

     

    Goodyear is a trademark of Goodyear Rubber and Tire Company. Michelin is a trademark of Michelin North America, Inc.

Disk gangs use field-proven gang components from the 2600 Series Disks
  • Disk gang spacingDisk gang spacing

    The 2720 disk gangs use field-proven gang components from the 2600 Series Disks for excellent reliability and performance. Disk gangs provide the following:

    • Size residue to flow through spring tillage tools
    • Kill weeds
    • Work the soil
    • Level the soil profile
    • Mix the surface residue
    • Give full-width tillage up to 152-mm (6-in.) deep

    C-spring standards protect the gangs from obstacles. Sealed maintenance free bearings prevent foreign material from getting into the bearings, thus ensuring long life. The bearings come with a two-year warranty.

     

    The 2720 disk gang also features a floating scraper that is now mounted to the gang instead of to the gang tube.  This allows the scraper to stay in constant contact with the blade when the gang side-loads in harsh conditions allowing for increased residue flowing capability.

  • Floating scrapers mounted to the gang to increase residue flowFloating scrapers mounted to the gang to increase residue flow

    The 610-mm x 7-mm (24-in. x 0.256-in.) solid spherical low-concavity disk blades are spaced at 279 mm (11 in.) for sizing residue and to ensure residue flows well through spring tillage tools.

     

    The 660-mm x 7-mm (26-in. x 0.256-in.) solid spherical low-concavity disk blades are spaced at 279 mm (11 in.) for sizing residue and to ensure residue flows well through spring tillage tools.

    NOTE: Pieces are not sized so small they deteriorate quickly, blow away easily, or are buried readily, and yet are small enough to flow through a field cultivator.

Category 5 hitch link available
  • Operators are requiring faster field working speeds and larger implements and tractors because of a dramatic increase in farm size. The market is asking for and receiving tractors with more torque, more weight, and more horsepower. This increased draft requires more from the implement frame and hitch components. 

     

    Frames and hitches have been redesigned with increases in frame tube thickness, additional diagonal bracing, and frame gussets for 600 engine horsepower requirements.

    • Category 5 implement hitch link

      Category 5 implement hitch link

    As part of the redesign, implements include a beefy Category 5 implement hitch link, providing the necessary strength and dimensions to match a Category 5 tractor drawbar and associated load.

    The drawbar pin is increased from 51 mm (2 in.) with Category 4 to 70 mm (2.75 in.) with Category 5. The hitch link thickness is increased from 47 mm (1.85 in.) with Category 4 to 58 mm (2.28 in.) with Category 5.

    The addition of this option will satisfy tractor Category 5 drawbar requirements.

  • Compatibility

    • Category 5 implement hitch links are not compatible with Category 4 tractor drawbars
    • Category 5 tractor drawbars are not compatible with Category 4 implement hitch links
    • Category 5 drawbars are currently not available on John Deere 9000 Series Tractors
Typical percentages of residue cover remaining
    • 2720 remaining residue in corn stalks

      2720 remaining residue in corn stalks

    Typical percentages of residue cover remaining from the 2720 Combination Ripper are listed in the table. These percentages do not take into account variables such as the conditions of the residue, speed, and soil type.

     

    NOTE: Percentages assume disk gangs are operating at 152 mm (6 in.) of depth.

    Starting
    residue
    cover
    (percent)

    Remaining non-fragile*
    residue cover
    (percent)

    Remaining fragile**
    residue cover
    (percent)

    57 mm (2.25 in.)
    point

    178 mm (7 in.)
    point

    57 mm (2.25 in.)
    point

    178 mm (7 in.)
    point

    100

    40

    35

    15

    12

    90

    36

    32

    14

    11

    80

    32

    28

    12

    10

    70

    28

    25

    11

    8

    60

    24

    21

    9

    7

    50

    20

    18

    8

    6

    40

    16

    14

    6

    5

     

    The 2720 offers increased weight per blade over the 512 to penetrate rock-hard soils and deliver up to 203.2 mm (8 in.) of blade working depth to bury residue. The chart below details the weight per blade of the 2720 with and without a basket versus the 512.

     

     

    Model/Size

    5 standard

    7 standard (folding)

    7 standard (non-folding)

    9 standard

    11 standard

    512

    288

    272

    279

    333

    Not applicable

    2720 without baskets

    359

    372

    345

    439

    421

    2720 with baskets

    392

    Not applicable

    410

    474

    456

     

    The 2720 achieves increased weight per blade over the 512 because of the following:

    • Mainframe fore/aft tubes increased from 152.4x152.4 mm (6x6 in.) on the 512 to
      177.8x177.8 mm (7x7 in.) on the 2720
    • Mainframe fore/aft tubes increased from 9.5-mm (0.38-in.) thick on the 512 to 12.7-mm (0.5-in.) thick on the 2720
    • Wing frames have changed from 6.4-mm (0.25-in.) thick on the 512 to 9.5-mm (0.38-in.) thick on the 2720
    • Increase in gang bolt size
    • Cast spools
    • 2720 burying corn residue

      2720 burying corn residue

    *Non-fragile residue includes crops like corn, sorghum, and wheat (more than 45 bu).

     

    **Fragile residue includes crops: soybeans, edible beans, peas, wheat (less than 45 bu), sunflower, peanuts, and cotton.

Ripper standards are located between the disk gangs
    • Disk and shank pattern

      Disk and shank pattern

    The 2720 Combination Ripper uses the disk-shank-disk configuration (DSD). In the DSD configuration, the ripper standards are located between the disk gangs instead of behind them (or DDS) as some competitors use.

     

    With the shanks at the rear of the machine, the shanks can leave large ridges and valleys.

Narrow-transport configurations available
    • Rear view of folded 2720 Narrow Transport

      Rear view of folded 2720 Narrow Transport

    • Side view of folded 2720 Narrow Transport

      Side view of folded 2720 Narrow Transport

    The 2720 Disk Ripper provides multiple narrow-transport configurations that enable producers to easily maneuver their implements. The 7-standard 2720 is available in rigid and folding configurations.

    Transport dimensions and rolling basket compatibility vary by tool. The folding 7-standard narrow-transport configuration is a true three-section machine with folding baskets. 

    7-standard configurations Rolling basket compatible Transport width Transport height
    Rigid, narrow transport (370QH) No 5.5 m (18 ft) Non folding
    Folding, narrow transport (370RH) Yes 4.3 m (14 ft) 4.1 m (13.5 ft)
Crank-adjust single-point depth control provides infinite range of settings
  • Crank-adjust single-point depth control is easily accessible from the front of the machine. This convenient performance feature:

    • Is in base equipment
    • Is easy to set
    • Conveniently provides an infinite range of depth settings
    • Gives excellent repeatability

    TouchSet™ depth control for 7R (infinitely variable transmission only), 8R, and 9R Series Tractors is available as an attachment.

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