Corn headers and adapters: how to choose for a combine or a forage harvester
03.08.2026
Corn headers and adapters
A corn header, also called a corn adapter, is the front attachment that snaps the ears or gathers the whole plant and feeds it into the machine. The right choice depends on the machine type - combine or forage harvester - on the row spacing of the crop, on the number of rows, and on the condition of the wear parts. This guide orders the decision step by step and explains which parts drive the true cost of ownership.
In short: Choose a corn header by the machine, the row spacing (most often 70 or 75 cm), the number of rows and the type of stalk chopper. Snapping headers such as Olimac Drago and Fantini are row-dependent and must match the row spacing. The wear parts - deck plates, stalk rolls, gathering chains and chopper knives - drive the long-term cost.
Article contents
- What a corn header is and the types available
- For a combine or a forage harvester
- Row-dependent or row-independent
- Which row spacing to choose
- How many rows the header should have
- Header with or without a stalk chopper
- Compatibility with the machine
- Folding headers for transport
- Corn header brands
- Deck plates and wear parts
- Maintaining the header
- New or used header
- How to cut harvest losses
- What to check before buying
- Common mistakes
- Frequently asked questions
What a corn header is and the types available
A corn header is a harvesting attachment that mounts on the front and separates the useful part of the plant. Depending on the machine and the goal there are two main types: snapping headers for combines, which pick only the ear, and forage headers for forage harvesters, which gather the whole plant for silage.
Snapping header for grain
A snapping header uses stalk rolls that pull the stalk down through the gap between the deck plates. The stalk passes down, but the larger ear cannot fit through the gap and is snapped off, after which the gathering chains carry it to the combine. Threshing the grain from the cob happens inside the combine, not on the header.
Forage header
A forage header cuts the whole plant close to the ground and feeds it to the forage harvester for chopping. Here the cutting system and the feed capacity matter most. It is used when the goal is green mass for silage rather than grain.
Two-row mounted forage harvester (Kemper Champion)
A separate case is the Kemper Champion 1200. It is not a combine header but a two-row mounted forage harvester with a 1.25 m working width that attaches to a tractor, cuts and chops the crop, and discharges the chopped material into a trailer. It uses row-independent rotary intake and suits small and medium farms rather than serving as an attachment for a self-propelled machine. There is more detail in the Kemper Champion 1200 guide.
For a combine or a forage harvester
The first decision is which machine the attachment is for, because a combine and a forage harvester need different headers. A snapping grain header and a forage header are not interchangeable, since they do different jobs and feed the machine in different ways. The machines themselves are compared in the guide on the difference between a forage harvester and a combine.
Choosing a snapping header
You choose a snapping header to harvest grain maize with a combine. The focus is clean snapping, minimal grain loss and well-set deck plates. The number of rows and the row spacing are matched to the specific combine.
Choosing a forage header
You choose a forage header to harvest the whole plant for feed with a forage harvester. Feed capacity and compatibility with the self-propelled machine are the priorities. In uneven stands, row-independent rotary intake has an advantage.
Row-dependent or row-independent
Headers split into row-dependent and row-independent. Row-dependent units work to a fixed row spacing and must match the crop. Row-independent rotary intake harvests regardless of the row and is typical of silage machinery.
Row-dependent headers
Row-dependent headers have snapping units at an exact spacing, for example 70 or 75 cm. They deliver clean harvesting when the crop is drilled at the same spacing. Most snapping grain headers are of this kind, including the Olimac Drago II and Fantini models.
Row-independent intake
Row-independent intake uses a series of cutting rotors and harvests regardless of the position and direction of the rows. It is typical of silage machinery in uneven or lodged crops. In the Agritec range this intake is found on the mounted Kemper Champion forage harvester, not on the snapping grain headers.
| Criterion | Row-dependent header | Row-independent intake |
|---|---|---|
| Tied to row spacing | yes, fixed | no |
| Typical use | snapping for grain | silage |
| Flexibility on the crop | lower | higher |
| Example | Olimac Drago, Fantini | rotary silage systems |
Which row spacing to choose
The row spacing of a snapping header must match the row spacing of the crop. The most common values are 70 cm and 75 cm, with 80 cm seen in places. With row-independent intake this question does not apply.
Why the match matters
If the header is set to 70 cm and the crop is drilled at 75 cm, the snapping units do not enter the rows cleanly. The result is torn stalks, blockages and higher grain loss. So a row-dependent header is always chosen to match the actual row spacing in the field.
When 80 or 50 cm makes sense
The wider 80 cm spacing is used with certain agronomy and hybrids, and narrow schemes with specific crops. If you drill to a non-standard spacing, state it at the order stage, because a header's row spacing cannot be changed easily after purchase.
How many rows the header should have
The number of rows is chosen by the machine's power and the area to harvest. The most common are 6, 8 and 12-row headers. A wider header raises daily output but needs more power and more careful transport.
Matching the power of the machine
Too wide a header on an underpowered machine leads to overloading and lost speed. Too narrow a header on a powerful machine wastes its capacity. So the number of rows is matched to the engine and throughput of the specific combine.
Output against area
For small and medium farms a 6-row header is often a sensible balance. On large areas 8 or 12 rows shorten the harvest window. A six-row unit for 70 cm spacing is, for example, the new Fantini L04 six-row header, offered for all brands of combine.
Header with or without a stalk chopper
A header with a stalk chopper has a knife or rolls that shred the stalks after the ear is snapped, while a header without one leaves them whole. For grain maize where residue is incorporated into the soil, the chopping header is the better option.
Advantages of chopping
The stalk chopper shreds the stalks and spreads them across the field, which eases incorporation and breakdown of the residue. This helps in intensive rotations and when preparing the soil for the next crop. The chopper knives, though, are a wear part and get replaced periodically.
When a non-chopping header is enough
A non-chopping header is simpler and has fewer wear parts to maintain. It suits cases where residue is managed separately or harvested for another use. Fewer moving parts mean a lower parts cost, but less agronomic benefit from shredding.
Compatibility with the machine
The header must be compatible with the specific combine in mounting, hydraulics and feeding. An incompatible header will not fit properly or will run at reduced efficiency, so compatibility is checked before purchase, not after.
Mounting and feederhouse
Different combine brands have different mounting frames and feederhouse dimensions. Some headers are offered for all brands, while others are built for a specific series - for example, the used Olimac Drago II is set up for CLAAS Lexion and Tucano. With a used header from another brand, this is the first thing to check.
Hydraulics and electrical connections
The header's adjustments - height, tilt and, on some models, folding - are controlled hydraulically and electrically from the cab. Deck-plate adjustment can be manual or automatic, and on the new Fantini units it is electric. The number and type of connections must match those of the combine.
Folding headers for transport
A folding design helps a wide header stay within the legal road dimensions. Whether it is needed depends on the transport width, the row spacing and the design of the model, not on the number of rows alone.
When it makes sense
A folding header is practical on wider configurations and on farms with scattered fields where road travel is frequent. Folding six-row models also exist, so the decision follows the actual transport width rather than a general rule.
What to watch
On folding models, check the hinges, hydraulic cylinders and locking mechanisms. These take load every time the header unfolds and are among the parts that wear under intensive use.
Corn header brands
The market offers headers from several established makers, each with its strengths. The brand choice depends on the harvesting type, compatibility with the combine and the availability of wear parts in the country. The full range is in the corn headers category.
Olimac Drago
Olimac Drago are snapping headers for grain maize, known for low losses and rugged construction. The used Olimac Drago II, for instance, is a six-row unit for 70 cm spacing, with a rigid frame, horizontal chopper, automatic deck-plate adjustment and metal row dividers.
Fantini
Fantini offers snapping headers in a range of row configurations, including folding models for wider harvesting. The brand is widespread here and has wear parts secured, which cuts downtime during replacement in the season.
Kemper
Kemper is a reference in row-independent rotary intake for silage. In the Agritec range the brand is represented by the mounted two-row Champion forage harvester, suited to small and medium farms, rather than as a snapping header for a combine.
Deck plates and wear parts
Wear parts drive the true cost of ownership more than the purchase price. Deck plates, stalk rolls, gathering chains and chopper knives are consumables that wear according to area and conditions.
Deck plates and stalk rolls
Deck plates hold and snap the ear off the stalk and directly affect losses and the cleanliness of the harvested grain. Too wide a gap lets grain through, while too tight a gap breaks ears. Worn plates and rolls raise losses, so they are monitored and replaced in time.
Gathering chains and chopper knives
Gathering chains move the stalks through the snapping unit, and chopper knives shred the residue. Both are moving parts with a set service life. One example is the chopper knife for the Fantini L4, replaced periodically according to the area worked.
Where the parts come from
Fast parts availability is decisive, because the corn harvest window is short. Wear parts for snapping headers are best secured before the season, so harvesting does not stop on a failure.
Maintaining the header
Regular maintenance protects output and keeps losses down. The main tasks are greasing the moving parts, checking the deck plates and stalk rolls, and correct storage out of season.
Maintenance before and during the season
Before the start, the gathering chains and their tension, the deck plates and the stalk rolls are checked, and on chopping headers the sharpness of the knives. During the campaign, greasing and a look for loose parts are done daily because of the high load.
Storage out of season
After harvest the header is cleaned of crop residue that traps moisture and causes corrosion. Moving parts are greased and the unit is stored under cover in a dry place. Correct storage extends the life of the snapping units and reduces repairs for the following year.
New or used header
A used corn header is a sensible choice on a tight budget if the snapping units, the deck plates and the frame are in good condition. A new header comes with a warranty and exact compatibility, but it is a larger investment.
The case for used
A used header is a good deal for farms harvesting moderate areas or just adding maize to the rotation. Check the wear on the snapping units, the state of the deck plates, and compatibility with the combine on hand. One example is the six-row Olimac Drago II set up for CLAAS Lexion and Tucano.
The case for new
A new header suits large areas, wide configurations and a requirement for minimal losses. Newer models use more durable materials, electric deck-plate adjustment, and integrate more easily with the cab of modern combines.
How to cut harvest losses
Corn harvest losses depend directly on the setup and condition of the header. The right speed, sound deck plates and the correct harvesting height are among the factors with the biggest effect. Worn wear parts are a common hidden cause, so keeping the right spare parts on hand keeps losses down.
Main factors behind losses
Too wide a deck-plate gap lets grain through, while too tight a gap breaks ears. Too high a ground speed also hurts, because the stalk rolls do not pull the stalks cleanly. Worn rolls and plates raise losses unnoticed across the season, so a short check before the start often pays for itself.
What to check before buying
Before you buy a corn header, check the type, row spacing, number of rows, compatibility and the condition of the wear parts. A short checklist prevents expensive mistakes.
- Is the header meant for a combine or a forage harvester;
- Does the row spacing match the crop's row spacing;
- Does the number of rows suit the combine's power;
- With or without a chopper, based on your rotation;
- Does the mounting, hydraulics and feederhouse fit;
- What condition are the deck plates, rolls and gathering chains in;
- Are wear parts and support secured for the season.
Common mistakes when choosing a corn header
The most common mistakes come from buying without checking compatibility and without accounting for wear parts. A cheap purchase turns expensive if the header does not fit the combine or the parts are not there in time.
Row spacing mismatch
A header with the wrong row spacing runs dirty and raises losses all season. This mistake is not easy to fix, so the crop's row spacing is confirmed before the order, not after the first day in the field.
Overlooked wear parts
Buying a header without secured deck plates, chains and chopper knives is a risk. When a failure strikes at the height of harvest, every lost day cuts yield. Parts availability is part of the decision, not an afterthought.
Frequently asked questions
What is the difference between a snapping and a forage header?
A snapping header strips only the ears to harvest grain maize with a combine. A forage header gathers the whole plant for silage and feeds a forage harvester. The two are not interchangeable, because they do different jobs and feed the machine in different ways.
Which row spacing should I choose for the header?
The row spacing of a snapping header must match the crop's row spacing. The most common values are 70 and 75 cm, with 80 cm in places. With row-independent rotary intake for silage this question does not apply, because it harvests regardless of the row.
Is the Kemper Champion 1200 a header?
No. The Kemper Champion 1200 is not a combine header but a two-row mounted forage harvester with a 1.25 m working width that attaches to a tractor, cuts and chops the crop, and discharges the chopped material into a trailer. It uses row-independent rotary intake and suits small and medium farms.
What are deck plates?
Deck plates are the two plates with a gap through which the stalk rolls pull the stalk down. The larger ear cannot pass through the gap and is snapped off. The gap width is adjustable and directly affects losses and the cleanliness of the harvested grain.
Can a header from one brand of combine go on another?
Sometimes it can, but the mounting, feederhouse size and hydraulic connections must be checked. Some headers are offered for all brands, while others are set up for a specific series. With a used header, compatibility is confirmed before purchase.
Which parts of the header wear fastest?
Deck plates, stalk rolls, gathering chains and chopper knives wear fastest. They are consumables with a set service life according to area and conditions. Replacing them in time protects yield and prevents breakdowns in the critical harvest window.