Working Width
22' 0" - 46' 7"
Transport Width
14' 6" - 18' 6"
Disk Blade Diameter
22" - 26"
Disk Blade Spacing
7.5" or 9"

True-Tandem™ Family

True-Tandem disk harrows series delivers the latest disk harrows technology combined with Case IH durability. The rugged frame design, exclusive Earth Metal^® blades and intuitive depth adjustment help you achieve seedbed perfection.

Explore Features

Agronomic Design Features
Frame
Leveling & Depth Control
Gang Assembly
Blades
Crumbler & Coil Tine Harrow
Choose Your True-Tandem

Agronomic Design™ Features

Effectively Manage Soil Without Compaction

True-Tandem disk harrow technology combines uniformly distributed pull forces with exclusive Earth Metal blades for optimal tillage performance, even in the roughest of fields. Built on proven Agronomic Design principles, our disk harrows help you effectively manage soil and residue without compaction. Slice through tough residue, uproot root balls and level the soil to create the best possible seedbed for your crop.

Learn about the 7 key agronomic areas

Crop Residue Management
- Control residue size and distribution to promote faster breakdown and nutrient cycling
- Ultimate disk harrow technology to manage residue from a multitude of crops
- The Crumbler puts the final touches on the seedbed
- Precise depth adjustment allows for greater control over soil residue cover at planting to fit a wide range of soil types, topographies and management objectives
Soil Tilth
- Break through crusty, sealed-over soils to achieve the proper balance of minerals, air and water
- The 18-degree gang angle matches blade concavity for thorough soil mixing and leveling
- Promote a better seedbed finish without the excessive compaction typical of heavier disks
- Helps reduce residue hair-pinning, resulting in better seed-to-soil contact and stand establishment
Seedbed Conditioning
- Put the finishing touches on fields by sizing clods and increasing the soil’s contact with residue for maximum decomposition
- Provide a uniform seedbed depth and temperature, contributing to early, even plant emergence

Frame

Frame With Built-In Durability

Improve balance and stability in the field with the True-Tandem frame design. The combination of mirror-matched gangs and a rugged, low-maintenance pull-through frame eliminate drift and accommodate higher ground speeds compared with the traditional double-offset frame. LED lights and a high-quality powder coat paint finish keep you in the field longer and your equipment looking good for years to come.

Frame
Wheels & Tires
Hitch

Mainframe & Wings

Provide exceptional center of gravity and balance
Designed with gusset plates to maximize strength and stress distribution
Deliver more uniform weight per blade
Overlapping weld design and welded cylinders improve durability while reducing maintenance and the chance of leaking

Durable Design Attributes

Included LED lights are brighter and longer-lasting than incandescent lamps
Class 3 powder coat paint finish retains color longer and is more scratch-resistant

Greaseless Bearings

Featured on wing pivots, rockshafts and the Crumbler
Reduces routine maintenance, keeping you in the field longer

Larger Tires, Less Compaction

Large, stubble-resistant tires provide a greater footprint and reduce compaction
Wheels work independently for a smoother ride and longer life
Rockshaft is mounted directly to the frame, the hubs and tires are more durable and tillage tool more balanced

Walking Tandems

Provide excellent depth control and stability
Low-cost standard configuration or optional larger, stubble-resistant tires

Frame-Mounted Gauge Wheels

Bolted directly to the frame
Adjustable, one-way pivot design provides stability and less wobble in normal field conditions
Design avoids sliding the gauge wheel and gouging the gang when wheel is on inside of turn
Set the gauge wheel for easy wing leveling — no wrenches are needed
Pivoting gauge radial stabilizer wheel increases surface area and provides improved durability

Rigid Wing Wheels

For those areas with smooth field conditions, optional rigid, dual wing wheels are available as a value option

Two Height Options

The rugged True-Tandem frame provides two height options for the hitch, depending on the tractor’s drawbar. Whether going across rugged, rolling terrains or field to field, you’ll be able to easily maneuver your equipment.

Front T-Bone Hitch

Spring cushioned, featuring the “perfect hitch” clevis for tractor pin compatibility and extra safety during hook up
Engineered to maximize rear tractor tire clearance during tight turns

Swivel Hose Stand

Mounted on the pull hitch
Keeps hydraulic hoses and wires out of the way during hook up and transport

Rear Hitch Versatility

Optional feature allows for pull-type attachments for additional soil conditioning
Equipped with a 9-pin electronic connector for lighting and one set of hydraulic couplers
Hitch vertical capacity is 1,000 lb.

Leveling & Depth Control

Level the Growing Field

Work the soil you want to work. The lineup of True-Tandem disk harrows engages soil to your intended depth without disrupting soil density below the operating depth. It’s a system that’s proven to provide more consistency, even as soil types change across the field. And thanks to an intuitive depth adjustment system, you easily can adjust depth control and leveling to meet the needs of your conditions and fields.

Single-point Hydraulic Depth Control
- Easily adjust operating depth with a single hand crank conveniently located at the front of the machine
- Helps adjust to adverse conditions, such as wet, muddy soil
- The system holds a constant blade operating depth to provide a uniform seedbed depth temperature, contributing to early, even plant emergence
Fore and Aft Leveling
- Increased wingspan improves overall balance and fore and aft leveling
- Optional hydraulic front-to-back leveling allows quick operator reaction to changes in field conditions
- View the gauge from the cab to easily return to your pre-adjusted position

Gang Assembly

Durability and Low Maintenance For Any Field

The True-Tandem gang assembly precisely matches front and rear gang blades for maximum productivity and a smooth seedbed, regardless of field conditions. The 18-degree gang angle paired with the concavity and crimped center of each blade gives you even cutting and mixing action. With more durability and low maintenance features, the True-Tandem disk harrow will get you in and out of the field and ready to plant.

Bearing Options
- Flange-style bearing works well in fields with few rocks and debris
- For areas with rocks and debris, the cushion gang option holds the arbor bolt firm, yet allows the joint to rotate freely through rough terrain for a high-quality finish
- For extreme soil conditions and rocky areas, additional heavy-duty bearings and gang hangers strengthen and support longer gang segments (31 ft. and 34 ft. only)
Proven Center Shank Design
- A center shank removes the uncut soil between disk gangs to create uniform residue and soil mixing
- Designed to let residue and soil roll off
Nodular Cast-iron Spools
- Made from nodular iron, which is stronger than gray cast-iron or steel-fabricated spools
- Spools withstand shock loads, providing the weight necessary to cut residue and penetrate hard soil
- The needed weight to penetrate hard ground and cut residue is carried in the gang, not the frame of the tool to reduce the stress on frames, bearings and gang hangers
New Bolt-and-Clamp Mounting Design
- Straight bolts and steel plates around the gang tube add strength and durability

Blades

Keep Your Edge With Earth Metal^® Disk Blades

Our industry-exclusive Earth Metal disk blades help you cover rocky terrain and uneven ground with confidence — even at high speeds. Equally tough and breakage-resistant in all directions, Earth Metal disk blades are proven stronger than ordinary carbon steel blades. Perfect for no-till and minimum-till environments, these disk blades penetrate hard, dry soils to help you break through surface compaction, effectively slicing through fall crop residue or spring weed flush.

Keep Your Edge With Earth Metal^® Disk Blades

Right-sized for Performance
- True-Tandem 345 disk harrow blades are 22 inches in diameter, right sized to handle residue.
- The True-Tandem 375 all-purpose disk features a unique shallow concavity bladed front gang and a standard concavity rear gang for better soil penetration and increased ground speeds.
- Standard concavity equipped front gang is also available for a more traditional disk configuration.
- A 26-inch blade option is available on the True-Tandem 375 disk harrow for maximum soil movement and mixing
- Blades provide additional tillage depth to help move more soil and residue
- Capable of running 4.5-7 miles per hour for greater productivity
Built for Longevity
- Using pure boron alloy steel and an extremely precise manufacturing process means the disk blades hold their shape better and resist breaking or bending
- Each disk blade runs on its edge, causing soil to explode off the blade and level with minimal backside pressure — this results in reduced compaction compared with conventional blades
Crimped-center Disk Blades
- Blades feature a unique, flat, crimped center for a tighter fit with the cast iron nodular spools
- Blade design adds strength where it counts — in the center of the blade
- Disk blade scrapers are adjustable in gangs or individually
- Scraper arm options can be tailored to local conditions, with heavy-duty, rigid arm scrapers recommended for heavy soils and lighter residue situations
Rollable Disk Blades
- Rollable disk blade offering allows customers who desire the ability to edge roll the disk blade to sharpen
- Made of a high-quality alloy with the toughness and durability of boron while maintaining the ability to roll the edge
- Note: This offering is not Earth Metal

Crumbler and Coil Tine Harrow

Reach Seedbed Perfection

Put the finishing touches on your seedbed with the double-edge TigerPaw Crumbler rolling reel. Every bar has two edges to hit large clods twice and tuck residue under the soil’s surface for improved leveling and better seed-to-soil contact. The unique design of the Crumbler ensures each bar is rifled to maintain constant down pressure, while hydraulic cylinders provide easy adjustability from the cab and settings to match any field condition.

TigerPaw Crumbler
- The patented Crumbler produces more uniform clod sizing and residue distribution
- The formed, twisted, shape limits excessive penetration into the soil to minimize accumulation of mud inside the Crumbler
- The Crumbler is made of high-strength steel for a longer life
- Mounted directly to the main frame for a more stable, long-lasting and reliable tool
Hydraulic Down Pressure
- Hydraulic down pressure allows downforce to be applied to the Crumbler and easily adjusted to match field conditions
- The force is changed with a hydraulic valve block found near the front of the tool
3-bar Coil Tine Harrow
- Made to perform in high-residue conditions
- Adjustable tine angles and an adjustable down pressure
- Indexed tines improve soil leveling

True-Tandem Family

Need Help Choosing a True-Tandem?

With so many options today, it's crucial to understand how each product may respond in your conditions. Learn more about how the True-Tandem family of disk harrows and vertical tillers compares to each other in similar, heavy residue conditions.

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Current Models - Click Model to View Specifications

True-Tandem™ 345 Disk Harrow
Case IH True-Tandem™ 345 disk harrows, with working widths of 22 to 47 feet, provide straight, easy pulling for primary tillage, seedbed preparation or chemical incorporation.
True-Tandem™ 375 Disk Harrow
Case IH True-Tandem™ 375 disk harrows, with working widths of 22 to 47 feet, deliver maximum pass coverage, durability and low maintenance with agronomically sound design features.

Previous Models - Ask Your Dealer for Details

True-Tandem 340
- Working Width: 18 - 34 ft
- Blade Spacing: 7.5 or 9 in
- Blade Size: 20 or 22 mm
True-Tandem 370
- Working Width: 19 - 46 ft
- Blade Spacing: 9 in
- Blade Size: 24 mm

Learn More on the Case IH Blog

Case IH Blog
- Tough field conditions call for rugged, reliable tillage tools. Learn more about equipment you can depend on at the Case IH blog.
  Read Now
Latest Posts
Approach Fall Tillage With a Proper Plan

New AFS Soil Command^™ Agronomic Control Technology

Earth Metal^® Slices Through Tillage Headaches

Rugged Blades for Today’s Tough Residue

Brochures

True-Tandem 335VT and 335 Barracuda Vertical Tillage Brochure
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True Tandem 345 and 375 Disk Harrows Brochure
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Genuine Case IH Parts & Service

Only genuine Case IH parts were made for your machine and designed for peak performance. Find everything you need from filters, fluids, shop products and safety equipment, to owners manuals, parts diagrams, paint, and batteries, at the Case IH parts store.

Visit the Case IH Parts Store Download or Order Operators Manuals

Next Steps

Build & Price

Configure and price your new True-Tandem Disk Harrow. Customize it the way you want.
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Compare Specs

Compare our True-Tandem Disk Harrow specs to other manufacturers' specs.
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Case IH Blog

Keep on top of the latest product information, farm show reports, and industry news.
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True-Tandem™ Disk Harrows

Working Width

22' 0" - 46' 7"

Transport Width

14' 6" - 18' 6"

Disk Blade Diameter

22" - 26"

Disk Blade Spacing

7.5" or 9"

True-Tandem™ Family

Agronomic Design™ Features

Effectively Manage Soil Without Compaction

Crop Residue Management

Soil Tilth

Seedbed Conditioning

Frame

Leveling & Depth Control

Level the Growing Field

Single-point Hydraulic Depth Control

Fore and Aft Leveling

Gang Assembly

Durability and Low Maintenance For Any Field

Bearing Options

Proven Center Shank Design

Nodular Cast-iron Spools

New Bolt-and-Clamp Mounting Design

Blades

Keep Your Edge With Earth Metal® Disk Blades

Right-sized for Performance

Built for Longevity

Crimped-center Disk Blades

Rollable Disk Blades

Crumbler and Coil Tine Harrow

Reach Seedbed Perfection

TigerPaw Crumbler

Hydraulic Down Pressure

3-bar Coil Tine Harrow

True-Tandem Family

Need Help Choosing a True-Tandem?

Current Models - Click Model to View Specifications

True-Tandem™ 345 Disk Harrow

True-Tandem™ 375 Disk Harrow

Previous Models - Ask Your Dealer for Details

True-Tandem 340

True-Tandem 370

Learn More on the Case IH Blog

Case IH Blog

Latest Posts

Brochures

Genuine Case IH Parts & Service

Next Steps

Build & Price

Compare Specs

Case IH Blog

Keep Your Edge With Earth Metal^® Disk Blades