The John Deere 644 X-Tier Mid-Size Wheel Loader is a powerful and versatile machine engineered for heavy-duty material handling tasks. With its robust construction and advanced features, it offers exceptional performance and productivity on the job site. The loader is equipped with a high-performance engine and cutting-edge technology, ensuring reliable operation and efficient fuel consumption. Its spacious and comfortable cabin is designed to optimize operator comfort and productivity during long hours of operation. The 644 X-Tier Wheel Loader features a quick-attach system for easy and fast attachment changes, enhancing versatility for various applications. Built to withstand rigorous working conditions, it is well-suited for construction, mining, and other demanding environments. The John Deere 644 X-Tier Mid-Size Wheel Loader sets a new standard for performance, efficiency, and durability in material handling operations.
- Net Power: 172 kW (231 hp) at 1,500 rpm
- Operating Weight: 18 856–18 892 kg (41,571–41,649 lb.)
- Bucket Capacity: 3.1–3.6 m3 (4.0–4.75 cu. yd.)
Product Features for John Deere 644 X-Tier Mid-Size Wheel Loader:
SmartWeigh™ Payload Weighing System:
- John Deere’s SmartWeigh™ is a payload weighing solution offering accurate measurements, dynamic weighing capabilities, and easy calibration.
- Features a low-cost 250-hour trial period to evaluate suitability for specific applications.
- Benefits include leading accuracy (+/- 1.5 percent), seamless calibration, dynamic weighing, and John Deere’s design and support.
- Integrated with JDLink™ for data access and available in factory or field kit options.
Enhanced Operator Situational Awareness:
- Advanced vision system with mirror-mounted cameras and rearview camera for improved visibility.
- Dynamic reversal projected path lines aid in visualizing loader’s path.
- Audible alarm notifies operator of detected objects.
Auto Level and Z-Bar Linkage Optimization:
- New P and X-tier utility loaders equipped with Auto Level for near-perfect parallelism.
- Enhanced buckets and Z-Bar linkage for improved productivity and material retention.
- High-Lift linkage adds hinge pin height, and improved geometry enhances visibility.
Redesigned Cab for Comfort and Productivity:
- Redesigned cab with increased legroom and dual tilt steering column.
- Additional 12V power ports, USB port, and auxiliary ports strategically placed.
- Upgraded HVAC system for improved cooling capacity and reliability.
- Sealed switch module updated for ease of use.
E-Drive System for Increased Productivity:
- E-Drive system provides productivity benefits over conventional drive train machines.
- Offers similar or better productivity with 10-13 percent fuel efficiency advantage.
- Fastest acceleration times on flat terrain and slopes.
Electrohydraulic Controls for Increased Functionality:
- EH controls for customizable machine operations.
- Soft hydraulic stops, personalized multi-function buttons, and attachment configuration settings.
- Improved functionality for increased productivity across job site applications.
Optimized Cooling with Quad-Cool™ System:
- Quad-Cool™ Cooling System isolates coolers for efficient cooling.
- Wide-open access for easy cleaning and maintenance.
- Cool-on-demand variable speed fan for better fuel economy.
Service Improvements for Enhanced Serviceability:
- Enhanced electrical and hydraulic routing, reduced leak points, and simplified service components.
- Ground-level daily service checks and fuel refill for easy access.
- Quad Cool system enhances cooling efficiency and durability.
Leading in Sustainability:
- 644 X-tier is the most fuel-efficient machine in its size class and the next size class up.
- Burns up to 10 percent less fuel than competitors, preventing approximately 150,000 kg of CO2 emissions over 15,000 hours.
- Lower volumes of oil and fluids required for maintenance, saving up to 1,700 kg of CO2 over 15,000 hours.
- Electric Drive components designed to last over 30,000 hours, contributing to longevity and lower environmental impact.
Product Specifications for John Deere 644 X-Tier Mid-Size Wheel Loader:
Engine:
- Manufacturer: John Deere
- Model: PowerTech PSS 6068
- Emission Rating: EPA Tier 4 / EU Stage V
- Displacement: 6.8 L (415 Inches³)
- Rated Speed: 1500 rpm
- Engine Output – Net: 172 kW (231 hp)
- Torque: 1095 Nm (808 lbf/ft)
Transmission:
- Type: Powershift w/Hybrid-Electric Drive
Differential:
- Front Differential Type: Locking
- Rear Differential Type: Open
Tires:
- Size – Standard: 23.5 R25
Brakes:
- Service Brake – Type: Wet Disc
- Service Brake – Actuation: Hydraulic
- Parking Brake – Type: Wet Multi Disc
Driveline:
- Height – Over Cab: 3450 mm (11 ft 4 in)
- Wheelbase: 3310 mm (10 ft 10 in)
- Ground Clearance: 386 mm (15.2 in)
- Width Over Tires – Std: 2875 mm (9 ft 5 in)
- Height – Pivot Pin: 4090 mm (13 ft 5 in)
- Reach – At 2130mm 45° Dump: 1610 mm (5 ft 3 in)
Dimensions:
- Fuel Tank: 350 l (92.6 gallons US)
- Hydraulic Tank: 103.4 l (27.3 gallons US)
- Heaped Capacity: 3.2 m³ (4.25 yd³)
- Breakout – Bucket: 15574 kgf (34334 lbf)
- Ride Control System: Optional
- Pump Type: Piston
- Pump Flow – 1: 265 lt/min (70 gallons US/min)
- System Pressure: 251.66 bar (3650 PSI)
Capacities:
- Operating Weight: 18856 kg (41571 lbs)
Further information on this machine can be viewed by visiting this link https://www.deere.com/en/loaders/wheel-loaders/mid-size-wheel-loaders/644-x-wheel-loader/
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