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The John Deere 644 P-Tier Mid-Size Wheel Loader is a robust and versatile machine designed for demanding material handling tasks. Equipped with a powerful engine and advanced features, it delivers reliable performance and high productivity on the job site. The loader features a spacious and ergonomic cabin, providing operators with comfort during extended work hours. With its quick-attach system, the 644 P-Tier allows for efficient attachment changes, enhancing versatility for various applications. Built for durability and longevity, this wheel loader is well-suited for construction, mining, and other tough working environments. The 644 P-Tier Mid-Size Wheel Loader is an excellent choice for operators seeking efficiency and reliability in their material handling operations.

  • Net Power: 186 kW (249 hp) at 1,800 rpm
  • Operating Weight: 18 709–18 744 kg (41,246–41,324 lb.)
  • Bucket Capacity: 3.1–3.6 m3 (4.0–4.75 cu. yd.)

Product Features for John Deere 644 P-Tier Mid-Size Wheel Loader:

SmartWeigh™ Payload Weighing System:

  • John Deere’s payload weighing solution, SmartWeigh™, ensures accurate measurements and dynamic weighing capabilities.
  • Offers a 250-hour trial period for users to evaluate its effectiveness.
  • Benefits include leading accuracy (+/- 1.5 percent), seamless calibration, and dynamic weighing features.
  • John Deere designed and supported, 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 integrated into a single display.
  • Dynamic reversal projected path lines aid in visualizing the loader’s path.
  • Audible alarm notifies operators of detected objects, enhancing safety.

Auto Level and Z-Bar Linkage Optimization:

  • Auto Level feature ensures near perfect parallelism throughout the boom raise and lower cycle.
  • Benefits include additional hinge pin height, improved visibility, and enhanced bucket material retention.
  • Offers improved productivity and load leveling capabilities.

Redesigned Cab for Comfort and Productivity:

  • Enhanced cab features include additional legroom, dual tilt steering column, and added accessory outlets.
  • Upgraded HVAC system improves cooling capacity and reliability.
  • Updated sealed switch module for ease of use and accessibility.

Electrohydraulic Controls for Increased Functionality:

  • EH controls offer soft hydraulic stops, customizable multi-function buttons, and attachment configuration settings.
  • Enhances machine operations and productivity across various job site applications.

Optimized Cooling with Quad-Cool™ System:

  • Quad-Cool™ Cooling System isolates coolers from engine heat for improved efficiency and durability.
  • Wide-open access ensures easy cleaning and maintenance.
  • Cool-on-demand variable speed fan enhances fuel economy and cooling efficiency.

Service Improvements for Enhanced Serviceability:

  • Improved electrical and hydraulic routing, reduced leak points, and simplified service components.
  • Ground-level daily service checks and fuel refill for easy access and convenience.
  • Quad Cool system enhances cooling efficiency and durability, ensuring optimal machine performance.

Product Specifications for John Deere 644 P-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: 1800 rpm
  • Engine Output – Net: 186 kW (249 hp)
  • Torque: 1100 Nm (811 lbf/ft)

Transmission:

  • Type: Powershift

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: 105.2 l (27.8 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: 310 lt/min (82 gallons US/min)
  • System Pressure: 251.66 bar (3650 PSI)

Capacities:

  • Operating Weight: 18709 kg (41246 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-p-wheel-loader/

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DISCLAIMER: The information that has been provided in this article is sourced from https://www.deere.com. The author does not assume any responsibility or liability for the accuracy, completeness, or usefulness of the information provided. The author shall not be held liable for any loss or damage resulting from the use of this content. For further information please contact the manufacturer directly.