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John Deere 644 P-Tier Mid-Size Wheel Loader

John Deere
Make John Deere
Model 644 P-Tier
Type Mid-Size Wheel Loaders

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Description

  • 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.)

Models

Engine
  • 6.8L (415 cu. in.) EPA Final Tier 4/EU Stage V John Deere PowerTech™ PSS engine.
Ground-Level Service
  • All daily service points including fuel refill are conveniently grouped at ground level on the left side of the machine for easy access.
EH Controls
    Easily control up to six functions without removing your hand from the ergonomically designed joystick. Two industry-exclusive multifunction buttons can each be programmed to handle any of 10 functions selected through the monitor including bucket vibrate and electrohydraulic (EH) Precision mode.
Roomy Cab
  • Operator station features three more inches of legroom, an improved HVAC system, additional storage, and a more adjustable seat than previous models.
  • Joystick controls, foot pedals, and sealed-switch module are all ergonomically placed for optimal comfort and convenience.
Buckets & Linkage
  • Featuring bucket and linkage designs that improve load leveling, material retention, and visibility, these loaders yield more productivity and performance than previous models.
  • A wide selection of enhanced production buckets with integrated spill guards, curved side cutters, and impressive rollback delivers elevated bucket-fill performance and material retention compared to earlier offerings.

Specifications

  • CAPACITIES - Alternator Output, Amp: 100
  • CAPACITIES - Axle - Front, ltr (gallons (US)): 22 (5.75)
  • CAPACITIES - Axle - Rear, ltr (gallons (US)): 22 (5.75)
  • CAPACITIES - Breakout - Bucket , kgf (lbf): 15574 (34334)
  • CAPACITIES - Fuel Tank, ltr (gallons (US)): 350 (92.6)
  • CAPACITIES - Heaped Capacity, m³ (yd³): 3.2 (4.25)
  • CAPACITIES - Hydraulic Tank, ltr (gallons (US)): 105.2 (27.8)
  • CAPACITIES - Largest bucket capacity, m³ (yd³): 3.4 (4.5)
  • CAPACITIES - Pump Flow - 1, lt/min (gallons (US) / min): 310 (82)
  • CAPACITIES - Pump Type: Piston
  • CAPACITIES - Ride Control System: Optional
  • CAPACITIES - Smallest bucket capacity, m³ (yd³): 3.2 (4.25)
  • CAPACITIES - System Pressure, bar (PSI): 251.66 (3650)
  • CAPACITIES - System Voltage, V: 24
  • CAPACITIES - Transmission, ltr (gallons (US)): 23 (6.075)
  • DIMENSIONS - Ground clearance, mm (inches): 386 (15.2)
  • DIMENSIONS - Height - Over Cab, mm (ft/in): 3450 (11 ft 4 in)
  • DIMENSIONS - Height - Pivot Pin, mm (ft/in): 4090 (13 ft 5 in)
  • DIMENSIONS - Length - Including Bucket, mm (ft/in): 8330 (27 ft 4 in)
  • DIMENSIONS - Reach - At 2130mm 45° Dump, mm (ft/in): 1610 (5 ft 3 in)
  • DIMENSIONS - Turning Circle - Maximum, mm (ft/in): 13000 (42 ft 9 in)
  • DIMENSIONS - Wheelbase, mm (ft/in): 3310 (10 ft 10 in)
  • DIMENSIONS - Width Over tires - Std, mm (ft/in): 2875 (9 ft 5 in)
  • DRIVELINE - Displacement, ltr (Inches³): 6.8 (415)
  • DRIVELINE - Emission Rating: Tier 4 / Stage V
  • DRIVELINE - Engine Manufacturer : John Deere
  • DRIVELINE - Engine Model: PowerTech PSS 6068
  • DRIVELINE - Engine Output - Net, kW (hp): 186 (249)
  • DRIVELINE - Front Differential Type: Locking
  • DRIVELINE - Parking Brake - Type: Wet Multi Disc
  • DRIVELINE - Rated Speed, rpm: 1800
  • DRIVELINE - Rear Differential Type: Open
  • DRIVELINE - Service Brake - Actuation: Hydraulic
  • DRIVELINE - Service Brake - Location: All Wheels
  • DRIVELINE - Service Brake - Type: Wet Disc
  • DRIVELINE - Tire size - Standard: 23.5 R25
  • DRIVELINE - Torque Rise, %: 58
  • DRIVELINE - Torque, Nm (lbf / ft): 1100 (811)
  • DRIVELINE - Transmission Type: Powershift
  • WEIGHTS - Operating Weight, kg (lbs): 18709 (41246)

Features

  • Bucket Capacity: 3.1-3.6 m3; (4.0-4.75 cu. yd.)
  • Engine Net Power: 186 kW (249 hp)
  • Operating Weight: 18 709-18 744 kg (41,246-41,324 lb.)

Copy Set

Engine

  • 6.8L (415 cu. in.) EPA Final Tier 4/EU Stage V John Deere PowerTech™ PSS engine.

Ground-Level Service

  • All daily service points including fuel refill are conveniently grouped at ground level on the left side of the machine for easy access.

EH Controls

    Easily control up to six functions without removing your hand from the ergonomically designed joystick. Two industry-exclusive multifunction buttons can each be programmed to handle any of 10 functions selected through the monitor including bucket vibrate and electrohydraulic (EH) Precision mode.

Roomy Cab

  • Operator station features three more inches of legroom, an improved HVAC system, additional storage, and a more adjustable seat than previous models.
  • Joystick controls, foot pedals, and sealed-switch module are all ergonomically placed for optimal comfort and convenience.

Buckets & Linkage

  • Featuring bucket and linkage designs that improve load leveling, material retention, and visibility, these loaders yield more productivity and performance than previous models.
  • A wide selection of enhanced production buckets with integrated spill guards, curved side cutters, and impressive rollback delivers elevated bucket-fill performance and material retention compared to earlier offerings.

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