644 X-Tier Mid-Size Wheel Loader
Mid-Size Wheel Loader
- 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.)
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- 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.
- 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.
- 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.
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.
- 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.
|Engine Manufacturer||John Deere|
|Engine Model||PowerTech PSS 6068|
|Emission Rating||Tier 4 / Stage V|
|Displacement, ltr (Inches³)||6.8 (415)|
|Rated Speed, rpm||1500|
|Engine Output - Net, kW (hp)||172 (231)|
|Torque, Nm (lbf / ft)||1095 (808)|
|Torque Rise, %||36|
|Transmission Type||Powershift w/Hybrid-Electric Drive|
|Front Differential Type||Locking|
|Rear Differential Type||Open|
|Tire size - Standard||23.5 R25|
|Service Brake - Type||Wet Disc|
|Service Brake - Location||All Wheels|
|Service Brake - Actuation||Hydraulic|
|Parking Brake - Type||Wet Multi Disc|
|Height - Over Cab, mm (ft/in)||3450 (11 ft 4 in)|
|Wheelbase, mm (ft/in)||3310 (10 ft 10 in)|
|Length - Including Bucket, mm (ft/in)||8260 (27 ft 1 in)|
|Ground clearance, mm (inches)||386 (15.2)|
|Width Over tires - Std, mm (ft/in)||2875 (9 ft 5 in)|
|Height - Pivot Pin, mm (ft/in)||4090 (13 ft 5 in)|
|Reach - At 2130mm 45° Dump, mm (ft/in)||1610 (5 ft 3 in)|
|Turning Circle - Maximum, mm (ft/in)||13000 (42 ft 9 in)|
|Fuel Tank, ltr (gallons (US))||350 (92.6)|
|Hydraulic Tank, ltr (gallons (US))||103.4 (27.3)|
|Axle - Front, ltr (gallons (US))||22 (5.75)|
|Axle - Rear, ltr (gallons (US))||22 (5.7)|
|Transmission, ltr (gallons (US))||32 (8.5)|
|Heaped Capacity, m³ (yd³)||3.2 (4.25)|
|Smallest bucket capacity, m³ (yd³)||3.2 (4.25)|
|Largest bucket capacity, m³ (yd³)||3.4 (4.5)|
|Breakout - Bucket , kgf (lbf)||15574 (34334)|
|Ride Control System||Optional|
|System Voltage, V||24|
|Alternator Output, Amp||140|
|Pump Flow - 1, lt/min (gallons (US) / min)||265 (70)|
|System Pressure, bar (PSI)||251.66 (3650)|
|Operating Weight, kg (lbs)||18856 (41571)|
Centre Hall, PA
East Palestine, OH
Fairmount City, PA
Niagara Falls, NY