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John Deere 644K Wheel Loader

John Deere 644K Wheel Loader

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Details

Driveline

Engine ManufacturerJohn Deere
Engine ModelPowerTech PSS 6090
Emission RatingTier 4
Displacement, ltr (Inches)9 (548)
Rated Speed, rpm1700
Engine Output - Net, kW (hp)173 (232)
Torque, Nm (lbf / ft)1062 (783)
Torque Rise, %56
Transmission TypePowershift
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))105.2 (6.95)
Axle - Front, ltr (gallons (US))22 (5.75)
Axle - Rear, ltr (gallons (US))22 (5.75)
Transmission, ltr (gallons (US))23 (6)
Heaped Capacity, m (yd)3.2 (4.25)
Bucket Capacity - Smallest, m (yd)3.1 (4)
Largest bucket capacity, m (yd)3.2 (4.25)
Breakout - Bucket , kgf (lbf)15378 (33903)
Ride Control SystemOptional
System Voltage, V24
Alternator Output, Amp130
Pump TypePiston
Pump Flow, lt/min (gallons (US) / min)297 (78)
System Pressure, bar (PSI)251.66 (3650)

 

Weights

Operating Weight, kg (lbs)18682 (41188)

 

Comparable Build

Dump Height, mm (ft/in)2910 (9 ft 7 in)
Reach at Full Height, mm (ft/in)1060 (3 ft 6 in)
Tipping Load - Straight, kg (lbs)14771 (32565)

 

 

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