The 644 X-Tier Wheel Loader is designed and purpose-built to take it on—and go beyond. With its innovative E-Drive and PowerShift™ transmission system delivering strong pushing power and fast ramp-climbing ability, tasks like loading trucks, maintaining stockpiles, and heaping hoppers can be accomplished with impressive efficiency.
The 644 X-Tier is packed with state-of-the-art technology and productivity-focused features to help your operation reach new heights.
- Choose between variable and constant engine speeds in Normal and Performance modes.
- Drivetrain and hydraulics are responsive and quick, maximizing productivity in demanding applications.
- The innovative E-Drive system includes an engine-driven generator and inverter to power the electric motor driving a simplified PowerShift™ transmission.
- Efficiency shines—up to 18% more tons moved per gallon of fuel burned compared to leading competitors.*
*As measured in a closed-circuit test conducted in September 2020 against similarly equipped top competitors. All machines were operated at maximum productivity in controlled conditions.
Find Your Fit
Every jobsite is unique. John Deere’s Performance Tiering Strategy was developed to give customers tailored machine options based on performance, price, and comfort. This strategy first launched with the wheel loader lineup and includes three tiers:
- X-Tier: The most innovative John Deere models - maximum productivity, technology, and user experience.
- P-Tier: High-production machines designed for long-term durability, operator comfort, and performance.
- G-Tier: Cost-effective, rugged, and reliable machines ideal for light- to medium-duty jobs.
644 G-Tier Wheel Loader / 644 P-Tier Wheel Loader / 644 X-Tier Wheel Loader
The latest John Deere wheel loaders now offer the SmartWeigh™ dynamic weighing system. It allows operators to weigh materials without pausing workflow—no need to lower and reraise the boom after tipoff. SmartWeigh™ integrates with JDLink™ and shares data via the onboard monitor for easy payload tracking and calibration. It’s available as a factory-installed option or field kit—and can even be tried at a low cost for the first 250 machine hours.