John Deere 644k Hybrid Wheel Loader


  • Net Power: 171 kW (229 hp) @ 1,700 rpm
  • Bucket Capacity: 3.1–3.2 m³ (4.0-4.25 cu. yd.)
  • Operating Weight: 18 341 (40,436)

Features

+ Engine

+ Quad-Cool™

+ Transmission and Axles

+ Maintenance

+ Controls

+ Versatility

+ Safety & Security



DRIVELINE

Engine Manufacturer John Deere
Engine ModelPowerTech PSX 6068
Emission RatingInterim Tier 4
Displacement, ltr (Inches³)6.8 (414)
Rated Speed, rpm1700
Engine Output - Net, kW (hp)171 (229)
Torque, Nm (lbf / ft)991 (730)
Torque Rise, %19
Transmission TypePowershift w/Hybrid-Electric Drive
Front Differential TypeLocking
Rear Differential TypeOpen
Tire size - Standard23.5 R25
Service Brake - TypeWet Disc
Service Brake - LocationAxle Inboard
Service Brake - ActuationHydraulic
Parking Brake - TypeWet Multi Disc - Transmission

DIMENSIONS

Height - Over Cab, mm (ft/in)3430 (11 ft 3 in)
Wheelbase, mm (ft/in)3260 (10 ft 8 in)
Length - Including Bucket, mm (ft/in)8300 (27 ft 3 in)
Ground clearance, mm (inches)461 (18.1)
Width Over tires - Std, mm (ft/in)2875 (9 ft 5 in)
Height - Pivot Pin, mm (ft/in)4120 (13 ft 6 in)
Reach - At 2130mm 45° Dump, mm (ft/in)1610 (5 ft 3 in)
Turning Circle - Maximum, mm (ft/in)13280 (43 ft 7 in)

CAPACITIES

Fuel Tank, ltr (gallons (US))397 (105)
Hydraulic Tank, ltr (gallons (US))106 (28)
Axle - Front, ltr (gallons (US))22 (5.75)
Axle - Rear, ltr (gallons (US))22 (5.75)
Transmission, ltr (gallons (US))37.9 (10)
Heaped Capacity, m³ (yd³)3.2 (4.25)
Bucket Capacity - Smallest, m³ (yd³)3.1 (4)
Largest bucket capacity, m³ (yd³)3.2 (4.25)
Breakout - Bucket , kgf (lbf)15378 (33903)
Ride Control SystemOptional
System Voltage, V24
Alternator Output, Amp100
Pump TypePiston
Pump Flow, lt/min (gallons (US) / min)297 (78)
System Pressure, bar (PSI)251.66 (3650)

WEIGHTS

Operating Weight, kg (lbs)18341 (40435)