CaseIH STX440QT Quadtrac

Last Updated: September 2024

Overview

The CaseIH STX440QT Quadtrac is a powerful articulated crawler tractor built for heavy-duty farming tasks. It features a unique Quadtrac drive system, which combines the benefits of tracks and wheels for excellent traction and reduced soil compaction. The tractor is steered using a smooth hydrostatic power system and has a full power shift transmission with 16 forward gears and 2 reverse gears.

Under the hood, the STX440QT boasts a Cummins QSX15 engine, which is liquid-cooled and turbocharged for better performance. This 6-cylinder diesel engine has a very high displacement of 912 ci, making it one of the largest in its class. It produces 440 hp at 2000 rpm, which is above average for tractors of this type. The tractor weighs 51,335 lb, giving it excellent stability for tough jobs. It also features a rear hitch with a category IVN rating, suitable for heavy implements.

The STX440QT is equipped with a closed center load sensing hydraulic system, which helps improve fuel efficiency and responsiveness. It has a 12-volt electrical system and an electric starter for reliable operation. With its 44-inch frame width, this tractor is designed to handle large-scale farming operations with ease. CaseIH, known for its high-quality agricultural equipment, has created a machine that combines power, efficiency, and advanced features in the STX440QT Quadtrac.
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Key Specifications

Category: Articulated

Power Output: 440 hp (328.1 kW)

Transmission: full power shift

Drive Type: Quadtrac

Operating Weight: 51335 lb (23285 kg)

Fuel Type: diesel

CaseIH STX440QT Quadtrac vs. Similar Tractors

Power Output

The Power Output for the CaseIH STX440QT Quadtrac is Poor. It is greater than 5% of similar Articulated tractors in our database.

Horsepower distribution of Articulated tractors

(across 0.0K+ tractors in our database)

Operating Weight

The Operating Weight for the CaseIH STX440QT Quadtrac is Poor. It is greater than 6% of similar Articulated tractors in our database.

Operating weight distribution of Articulated tractors

(across 0.0K+ tractors in our database)

Engine Displacement

The Engine Displacement for the CaseIH STX440QT Quadtrac is Above Average. It is greater than 73% of similar Articulated tractors in our database.

Engine displacement distribution of Articulated tractors

(across 1K+ tractors in our database)

Engine Rated RPM

The Engine Rated RPM for the CaseIH STX440QT Quadtrac is Average. It is greater than 32% of similar Articulated tractors in our database.

Engine rated RPM distribution of Articulated tractors

(across 1K+ tractors in our database)

Technical Specifications

Engine

Manufacturer
Cummins
Model
QSX15
Cooling Type
liquid-cooled
Fuel Type
diesel
Induction Type
turbocharged aftercooled
Cylinders
6
Displacement
912 ci (14.9 L)
Bore
5.39 in (137.0 mm)
Stroke
6.65 in (169.0 mm)
Rated RPM
2000
Power Output
440 hp (328.1 kW)

Transmission

Type
full power shift
Forward Gears
16
Reverse Gears
2

Drivetrain

Chassis
articulated crawler
Drive Type
Quadtrac
Steering Type
hydrostatic power