Driveline designed to deliver optimal crop flow when the engine is operating in its efficiency sweet spot
The ProStream crop flow designed with extra heavy-duty components for high horsepower and more throughput than ever before
Features may include:
Low engine speed concept
The John Deere 9000 Series Self-Propelled Forage Harvesters (SPFH) have been developed with a clear focus on machine performance: more throughput and less fuel consumption while providing maximum uptime and low cost of operation.
A key success factor is the concept of lower engine rpm at higher harvesting component speeds.
V12 – 24-L concept: The Liebherr® D9512 engine
The top-model 9700, 9800, and 9900 SPFH are equipped with a Liebherr 12-cylinder V-engine with 24-L displacement. The Liebherr D9512 is a state-of-the-art engine and delivers what a high-performance forage harvester requires:
High power density and great fuel efficiency
Constant maximum power down to lower engine rpm
Torque curve designed for forage harvesting applications
The broad maximum power range of the Liebherr V12 engine cuts off the less-efficient rpm area above 1800 rpm. The rising torque curve down to 1300 rpm enables efficient operation of the machine in the lower rpm range.
Revised driveline with optimized component speeds
To reach maximum efficiency and performance, all machine component speeds are re-worked and laid out for best function in the 1400 to 1800 engine rpm range. This also leads to better fuel efficiency with an optimum range from 1250 to 1600 rpm, where the engine has its lowest specific fuel consumption (g/kWh).
This unique concept delivers undisputed customer value:
10 percent more throughput (t/kW)
10 percent better fuel economy (L/t)
More hours in the field with 1500-L (396.25-gal.) diesel tank and 90-L (23.8-gal.) urea tank
Overview
John Deere self-propelled forage harvesters (SPFH) set new standards in kernel processing performance. Proven in independent tests during corn harvest in 2016 and 2017, John Deere kernel processors (KP) deliver smashed kernels and highly processed plants that growers expect. With two different models, the John Deere Premium KP™ kernel processor and the John Deere XStream KP™ kernel processor, all different needs will be satisfied.
Additional details
All John Deere SPFH can be operated with or without a kernel processing unit in position. When not in use, a crop transition chute (or grass chute) swings into position with a few turns of a crank. The crop transition chute comes standard on all harvesters.
Photos
Highlights
Petrolia, Ontario
2025
John Deere
9000 Series 9800
Model: D9512 A7 04
Available
Front: 830 mm (32.7 in.) | Knife drum: 850 mm (33.5 in.) | housing : 620 mm (24.41 in.)
Working (maximum): 6.6 m (21.65 ft)
Specifications
2025
John Deere
9000 Series
9800
Self-Propelled Forage Harvesters
Model: D9512 A7 04
Liebherr®
At 1800 rpm (ECE R120): 640 kW 870 PS / 858 hp | Rated power: 588 kW 800 PS / 789 hp
Engine rpm on road: 1200-1800 rpm
V 12
24.2 L (1476.8 cu in.)
Exhaust emission regulation compliancy: Final Tier 4 / EU Stage V
Fan drive: Direct
Common rail plus four valves
ProDrive™ system, autoshift transmission, differential lock (automatic and manual), automatic wet brake system | Rear axle type: Hydromechanical 4WD
Main: Dry clutch
Manual and automatic
Pressurized oil
3 x 174 amp-hr
12 / 24 V
12 V - 200 amp / 24 V - 140 amp
ProDrive system: 20/25/30/40 km/h (12.4/15.5/18.6/24.9 mph) | Speed at rated engine speed: 1170 rpm
Front: 830 mm (32.7 in.) | Knife drum: 850 mm (33.5 in.) | housing : 620 mm (24.41 in.)
To cab roof: Below 4 m (13.12 ft)
Without header: 6.6 m (21.7 ft)
Maize headers: 6, 7.5, or 9 m (19.7, 24.6 , or 29.5 ft)
Without header: 3.2-3.8 m (10.5-12.5 ft)
240 mm (9.45 in.) | 250 mm (9.8 in)
560 mm (22.86 in)
Tank: 1,500 L (396.3 U.S. gal.) | DEF tank capacity ( for FT4 or EU Stage V emission level): 103 L (23.8 U.S. gal.)
50 L (13.2 U.S. gal.)
163.3 kg (360 lb)
Number of discs: Two discs | Main driveband: Reinforced with Kevlar® inserts | Main driveband, polybelt belts: Nine grooves | Operator information system: Cornerpost display | Maize headers: 8, 10 or 12 rows | Feeding system/Feedrolls Number: Four | Knife types available (crop): Straight - grass / Curved - corn | Maize - standard sawtooth or Dura Line™ roll teeth number (speed differential): 118 (32 or 40 percent) | Whole crop - standard sawtooth roll teeth number (speed differential): 178 (32 or 40 percent)