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John Deere 644 X-Tier Mid-Size Wheel Loader

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

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Description

  • 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.)

Models

E-Drive Innovation
  • Innovative E-Drive transmission system delivers premium performance and efficiency. System includes an engine-driven generator plus an inverter to control the electric motor that drives a simplified PowerShift™ transmission.
Ground-Level Service
  • All daily service points including fuel are conveniently grouped on the left side of the machine at ground level, for easy access.
  • Hinged doors enable wide-open access to the engine, cooling system, and other components.
EH Controls
  • Seat-mounted hydraulic controls include two programmable multifunction buttons and intuitive electrohydraulic (EH) controls.
  • With the capacity to control up to six functions on the single hydraulic joystick, cycle times and productivity when using hydraulic attachments are improved.
Buckets & Linkage
  • A wide-ranging selection of enhanced production buckets with integrated spill guards, curved side cutters, and impressive rollback maximizes bucket-fill performance and material retention.
  • Choose from hi-vis and JRB-style couplers to maximize fleet versatility and machine utilization.
Comfortable Cab
  • Spacious cab boasts ample legroom and features ergonomically placed controls, foot pedals, and sealed-switch module.
  • Running wide open at 1,600 rpm, the in-cab noise rating is just 70 dBA.

Specifications

  • CAPACITIES - Alternator Output, Amp: 140
  • CAPACITIES - Axle - Front, ltr (gallons (US)): 22 (5.75)
  • CAPACITIES - Axle - Rear, ltr (gallons (US)): 22 (5.7)
  • 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)): 103.4 (27.3)
  • CAPACITIES - Largest bucket capacity, m³ (yd³): 3.4 (4.5)
  • CAPACITIES - Pump Flow - 1, lt/min (gallons (US) / min): 265 (70)
  • 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)): 32 (8.5)
  • 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): 8260 (27 ft 1 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): 172 (231)
  • DRIVELINE - Front Differential Type: Locking
  • DRIVELINE - Parking Brake - Type: Wet Multi Disc
  • DRIVELINE - Rated Speed, rpm: 1500
  • 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, %: 36
  • DRIVELINE - Torque, Nm (lbf / ft): 1095 (808)
  • DRIVELINE - Transmission Type: Powershift w/Hybrid-Electric Drive
  • WEIGHTS - Operating Weight, kg (lbs): 18856 (41571)

Features

  • 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.)
  • Engine Net Power: 172 kW (231 hp)

Copy Set

E-Drive Innovation

  • Innovative E-Drive transmission system delivers premium performance and efficiency. System includes an engine-driven generator plus an inverter to control the electric motor that drives a simplified PowerShift™ transmission.

Ground-Level Service

  • All daily service points including fuel are conveniently grouped on the left side of the machine at ground level, for easy access.
  • Hinged doors enable wide-open access to the engine, cooling system, and other components.

EH Controls

  • Seat-mounted hydraulic controls include two programmable multifunction buttons and intuitive electrohydraulic (EH) controls.
  • With the capacity to control up to six functions on the single hydraulic joystick, cycle times and productivity when using hydraulic attachments are improved.

Buckets & Linkage

  • A wide-ranging selection of enhanced production buckets with integrated spill guards, curved side cutters, and impressive rollback maximizes bucket-fill performance and material retention.
  • Choose from hi-vis and JRB-style couplers to maximize fleet versatility and machine utilization.

Comfortable Cab

  • Spacious cab boasts ample legroom and features ergonomically placed controls, foot pedals, and sealed-switch module.
  • Running wide open at 1,600 rpm, the in-cab noise rating is just 70 dBA.

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