The John Deere 9660 STS combine harvester is a high-performance rotary or walker-type machine from the American manufacturer John Deere, designed for efficient harvesting on large agricultural enterprises.
The key feature of this model is its single-rotor threshing and separation system — Single Tine Separation (STS). The strong technical capabilities of the John Deere 9660, including its powerful PowerTech engine, ensure reliable performance when working with high-yield crops.
Its primary applications include harvesting grain and row crops across large fields where high throughput and excellent threshing quality are essential.
Technical specifications of the John Deere 9660
| Technical specifications of the John Deere 9660 | Typical value |
| Model | John Deere 9660 STS |
| Manufacturer | John Deere |
| Combine type | Grain combine, rotary |
| Threshing and separation system | Single-rotor STS (Single Tine Separation) |
| Engine manufacturer | John Deere |
| Engine model | PowerTech 8.1L |
| Engine displacement | 8.1 L |
| Number of cylinders | 6, inline |
| Rated engine power | ~290 hp (216 kW) |
| Maximum power (with Power Boost) | ~315 hp (235 kW) |
| Rotor type | STS |
| Rotor diameter | ~762 mm |
| Rotor length | ~3130 mm |
| Cleaning system | Dyna-Flo II |
| Total cleaning shoe area | ~4.6 m² |
| Grain tank capacity | ~8800 L |
| Unloading rate | ~77 L/s |
| Transmission type | Hydrostatic, 3-speed Posi-Torq |
| Cab | Sound-Gard Deluxe with CommandCenter display |
| Fuel tank capacity | ~757 L |
| Standard header working width | 6.7 to 9.1 m |
Important! The specifications of the John Deere 9660 STS and other modifications may vary depending on the year of manufacture, configuration, and regional specifications. For precise information, please refer to the manufacturer.
Grain harvesters on Agroline!
Modifications of the John Deere 9660
John Deere 9660 STS (standard version)
This is the base and most common modification of the combine. It is equipped with the Posi-Torq hydrostatic transmission and designed for fields with flat or moderately hilly terrain. The model delivers high performance under standard operating conditions.
John Deere 9660 STS HillMaster
This version is equipped with the HillMaster leveling system. The adapted technical capabilities of the John Deere 9660 STS allow it to compensate for slopes of up to 22%. The combine keeps the threshing and separation system in a horizontal position, helping to reduce grain losses when working on hillsides.
Versions with ProDrive
Later or optionally equipped modifications could feature the stepless ProDrive transmission. It provides smoother speed control and improved traction, increasing efficiency in challenging or changing field conditions.
John Deere 9660 WTS
In addition to the rotary STS model, there was also a walker version — the John Deere 9660 WTS or 9660i WTS for the European market. Instead of a single longitudinal rotor, it uses a traditional threshing system with a drum and straw walkers, enhanced by WTS (Walker Tine Separation) technology.
The walkers have additional tines for more active straw agitation. As a result, the characteristics of the John Deere 9660 WTS focus on versatility and producing high-quality straw.
Average market price
The Agroline platform offers a wide selection of John Deere 9660 combines. Prices range from $35,000 to $350,000, depending on the year of manufacture, condition, and configuration.
FAQ
How much does a new and used John Deere 9660 cost?
A brand-new John Deere 9660 is no longer produced. As for used models, they typically sell for between USD 35,000 and USD 350,000, depending on condition, year of manufacture, and configuration.
Which crops can be harvested with the John Deere 9660?
The John Deere 9660 is a versatile machine that, with the appropriate header installed, can harvest wheat, barley, corn, sunflower, soybeans, and a wide range of other grain and row crops.
What is the fuel consumption of the John Deere 9660 during harvesting?
The John Deere 9660 consumes an average of 30 to 55 liters per hour, depending on crop yield, moisture levels, and operating conditions.