Case IH manufactured the 7120 tractor from 1987 to 1993 as part of the Magnum Series. The company built these row-crop tractors at their facility in Racine, Wisconsin, USA. The 7120 served as the middle model in a three-tractor lineup that included the 7110, 7120, and 7130.
Series Development
The Magnum Series represented Case IH’s approach to high-horsepower farming during the late 1980s and early 1990s. The 7120 delivered an estimated 166.7 horsepower, positioned between the 144.4 hp 7110 and the 188.9 hp 7130. This power range targeted farmers operating medium to large-scale operations.
Technical Specifications
Engine and Performance
Case IH equipped the 7120 with a CDC 8.3L six-cylinder diesel engine. Testing showed the tractor produced 155.38 horsepower at the PTO and 135.55 horsepower at the drawbar. The claimed PTO power rating was 150 horsepower.
Transmission Options
Buyers could select from two transmission configurations:
- 18-speed full power shift.
- 24-speed powershift with creeper gear.
Drive Systems
The 7120 came standard as a 4×2 two-wheel drive tractor. Case IH offered an optional 4×4 mechanical front-wheel drive (MFWD) system for improved traction in challenging field conditions.
Operational Features
Hydraulic System
The tractor used a closed-center pressure flow compensated (PFC) hydraulic system. The system maintained 2,600 psi pressure with a 50.5-gallon capacity. Pump flow reached 22 gallons per minute, with total flow of 29 gallons per minute. Buyers could order between two and four hydraulic valves.
Three-Point Hitch
The rear hitch met Category III/IIIN standards with electronic lower link control. Maximum lift capacity reached 8,300 pounds at the standard 24-inch lift point.
Power Take-Off
Case IH provided an independent rear PTO with wet disc clutch. The system offered 1000 RPM operation at 1,375-inch shaft size, with some models featuring dual 540/1000 RPM capability.
Operator Environment
The 7120 came standard with the Silent Guardian II cab, which included air conditioning. Case IH offered an optional radio and tape deck system. The cab provided protection from weather and reduced noise levels during operation.
Physical Specifications
The tractor measured 118.3 inches in wheelbase length. Operating weight ranged from 15,920 to 17,220 pounds depending on configuration. Standard tire sizes were 11.00-16 for front tires and 18.4R38 for rear tires on two-wheel drive models.
Fuel and Capacity
The 7120 carried 78 gallons of fuel in its standard tank. Case IH offered an optional 95-gallon fuel tank for extended operation periods. The hydraulic system held 50.5 gallons of fluid.
Production Numbers and Dating
Case IH assigned serial numbers to track production years:
- 1987: Started with 9949001.
- 1988: JJA0001501.
- 1989: JJA0008528.
- 1990: JJA0018838.
- 1991: JJA0030160.
- 1992: JJA0039300.
- 1993: JJA0046350.
Serial number plates were located on the cab floor inside the tractor.
Market Position
The 7120 carried a list price of $76,000 in 1993, the final production year. This pricing reflected the tractor’s position in the high-horsepower segment of the agricultural market.
Series Transition
Case IH discontinued the original Magnum Series in 1993. The company replaced the 7120 with the 7220 model, which ran from 1994 to 1996 as part of an updated tractor lineup.
Legacy
The 7120 established Case IH’s presence in the competitive row-crop tractor market during a period of agricultural consolidation. The model’s six-year production run demonstrated the company’s commitment to the horsepower range that many grain and livestock operations required during this era.
