John Deere 644K Wheel Loader
John Deere 644K Wheel Loader
Details
Driveline
| Engine Manufacturer | John Deere |
|---|---|
| Engine Model | PowerTech PSS 6090 |
| Emission Rating | Tier 4 |
| Displacement, ltr (Inches) | 9 (548) |
| Rated Speed, rpm | 1700 |
| Engine Output - Net, kW (hp) | 173 (232) |
| Torque, Nm (lbf / ft) | 1062 (783) |
| Torque Rise, % | 56 |
| Transmission Type | Powershift |
| Front Differential Type | Locking |
| Rear Differential Type | Open |
| Tire size - Standard | 23.5 R25 |
| Service Brake - Type | Wet Disc |
| Service Brake - Location | Axle Inboard |
| Service Brake - Actuation | Hydraulic |
| Parking Brake - Type | Wet 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 System | Optional |
| System Voltage, V | 24 |
| Alternator Output, Amp | 130 |
| Pump Type | Piston |
| 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) |