Production years
1973-1979
International Harvester planter ยท 1973-1979
International Harvester Cyclo 400 Planter
The International Harvester Cyclo 400 is an early Cyclo Air planter from the 1970s, commonly found in four- and six-row configurations. It is historically important because its central-hopper pneumatic seed system brought high-capacity air-planter technology to US row-crop farms.
Planter type
Drawn pneumatic row-crop planter
Row configurations
Commonly 4- and 6-row; 30-, 36-, and 38-inch spacings were common
Metering system
Cyclo Air central-hopper pneumatic drum meter
International Harvester Cyclo 400 specifications
| Production years | 1973-1979 |
|---|---|
| Planter type | Drawn pneumatic row-crop planter |
| Row configurations | Commonly 4- and 6-row; 30-, 36-, and 38-inch spacings were common |
| Metering system | Cyclo Air central-hopper pneumatic drum meter |
| Seed types | Corn, soybeans, sorghum, sunflowers, and other crops with appropriate drum |
| Frame | Rigid drawn toolbar |
| Drive system | Ground-drive seed distribution and hydraulic air system |
| Weight | About 4,500-8,000 lb empty, depending on row count and equipment |
What the Cyclo 400 is used for
The Cyclo 400 was designed for row-crop growers wanting the capacity of a central seed hopper and an air seed meter rather than individual-row seed boxes. Four- and six-row versions fit the tractor sizes and row widths common in the 1970s.
It is now chiefly valued as a classic, usable planter for smaller acreages, restoration, and operators familiar with Cyclo systems. It can still plant effectively when the air system, drum, manifold, and row units are carefully maintained and calibrated.
Why the International Harvester Cyclo 400 stands out
The Cyclo 400 is notable as part of the pioneering IH Cyclo Air planter family. Its centralized hopper and air distribution were major departures from conventional individual-hopper planters, and the design established the foundation for later Cyclo models.
Buying a used International Harvester Cyclo 400
A Cyclo 400 purchase should begin with the air system: inspect the fan, hydraulic motor, hoses, manifold, seed drum, seals, cutoff brushes, and distribution tubes for wear or leaks. Then inspect opener discs, gauge wheels, closing wheels, parallel-link pivots, chains, wheel drives, and the central hopper for corrosion or damage. Confirm drum availability for the intended crop before committing.
International Harvester Cyclo 400 frequently asked questions
What does Cyclo Air mean on an IH 400 planter?
It refers to IH's pneumatic central-hopper seed-metering and distribution system.
How many rows does a Cyclo 400 usually have?
Four- and six-row versions are common, with row spacing varying by original configuration.
Can a Cyclo 400 still be used today?
Yes, but successful use depends heavily on a sound fan, air system, correct drum, seals, and well-maintained row units.
Specifications are commonly cited figures for general reference; exact figures vary by year and serial number, so confirm against TractorData.com and the machine's records. Values and prices of used planters vary by condition, use, and region. Page updated Aug 4, 2026.