Production years
1979-1988
John Deere combine ยท 1979-1988
John Deere 7720 Combine Harvester
The John Deere 7720 is a large, high-capacity conventional combine from Deere's Titan and Titan II era. It earned a strong reputation on Midwestern grain farms for its 55-inch cylinder, five straw walkers, Sound-Gard cab, and straightforward serviceability.
Engine
John Deere 466 cu. in. turbocharged 6-cylinder diesel, 145 hp standard or 165 hp with hydrostatic drive
Grain tank capacity
6,700 litres
Header compatibility
Quik-Tatch platforms to 6.7 m; maize heads to 8 rows
John Deere 7720 specifications
| Production years | 1979-1988 |
|---|---|
| Threshing system | Conventional rasp-bar cylinder with five straw walkers |
| Engine | John Deere 466 cu. in. turbocharged 6-cylinder diesel, 145 hp standard or 165 hp with hydrostatic drive |
| Grain tank capacity | 6,700 litres |
| Header compatibility | Quik-Tatch platforms to 6.7 m; maize heads to 8 rows |
| Weight | Approx. 7,710 kg without header |
| Cylinder | 55 in. wide; dual-range drive |
What the 7720 is used for
The 7720 was designed for substantial maize, soybean, wheat, and small-grain acreage in the late 1970s and 1980s. Its conventional cylinder-and-walker layout remains especially attractive where straw quality matters.
Today, it is commonly used on smaller grain farms, for backup harvesting, and by owners who prefer a mechanically direct classic combine. Capacity is modest beside modern rotaries, but a properly adjusted machine remains productive in suitable crops.
Why the John Deere 7720 stands out
The 7720 is one of Deere's best-known classic combines because it combined major capacity for its day with a comfortable cab and broad dealer and aftermarket support. Its familiar design, large production base, and continued parts availability make it more practical than many same-era competitors.
Buying a used John Deere 7720
Check cylinder rasp bars, concave, beater grate, straw-walker crank and bearings, shoe bushings, feederhouse chains and sprockets, and all belts and variable-speed drives. Inspect the grain tank and unloading auger for thin metal, verify hydrostatic response and separator engagement, and judge the machine by service history and separator hours rather than paint; confirm serial-specific specifications with TractorData.com and manufacturer records.
John Deere 7720 frequently asked questions
How much horsepower does a John Deere 7720 combine have?
It is commonly cited at 145 hp in standard form, with 165 hp cited for the hydrostatic-drive version.
What is the grain tank capacity of a 7720?
The standard grain tank capacity is 190 bushels.
Is a 7720 still a good used combine?
Yes, for modest acreage if it has been maintained and parts support is accessible locally; inspect wear items carefully before buying.
Specifications are commonly cited figures for general reference; exact figures vary by year, header and configuration, so confirm against the manufacturer's records and the machine's serial number. Weights, capacities and dimensions are converted to metric and rounded. Used combine values vary by condition and hours. Page updated 19 Sep 2026.