| Manufacturer | John Deere |
|---|---|
| Model | 644B |
| Type | Wheel Loader |
| Horsepower | 145 hp (108,1 kW) |
| Weight | 28100 lbs (12745,9 kg) |
| Tipping Capacity | 22910 lbs (10391,8 kg) |
| Max Speed | 25.8 mph (41,5 km/h) |
| No Of Cylinders | 6 |
| Aspiration | Turbocharged |
| Displacement | 531 cu in. (8701,6 cc) |
| Alternator Supplied Amperage | 42 amps |
| Operating Voltage | 12 V |
| Rated Speed | 2200 RPM |
| Torque Speed | 1500 RPM |
| Net Power | 145 hp (108,1 kW) |
| Gross Power | 160 hp (119,3 kW) |
| Peak Torque | 432 lbs ft (585,7 N-m) |
| Fuel Capacity | 56 gal (212,0 l) |
| Engine Oil Capacity | 5.5 gal (20,8 l) |
| Cooling Capacity | 12.3 gal (46,6 l) |
| Hydraulic System Capacity | 17.5 gal (66,2 l) |
| Transmission Oil Capacity | 9.8 gal (37,1 l) |
| Differential Front Capacity | 6 gal (22,7 l) |
| Differential Rear Capacity | 6.3 gal (23,8 l) |
| Transmission Type | Power shift |
| No of Forward Gears | 4 |
| No of Reverse Gears | 2 |
| Rear Axle Oscillation | 22° |
| Max Speed (Forward) | 25.8 mph (41,5 km/h) |
| Max Speed (Reverse) | 10.2 mph (16,4 km/h) |
| Pump type | Gear |
| Pump Flow | 58.2 GPM (220,3 LPM) |
| Relief Pressure | 2250 psi (155,1 bar) |
| Operating Weight | 28100 lbs (12745,9 kg) |
| Tipping Load | 22910 lbs (10391,8 kg) |
| Bucket Capacity (Heaped) | 2.5 cu yds (1,9 m³) |
| Bucket Capacity (Struck) | 2.1 cu yds (1,6 m³) |
| Bucket Width | 108 in (274,3 cm) |
| Breakout Force | 24120 lbs (10940,6 kg) |
| Reach At Max Lift And Dump | 36 in (91,4 cm) |
| Dump Clearance At Max Raise | 108 in (274,3 cm) |
| Turning Radius | 192 in (487,7 cm) |
| Wheelbase | 108 in (274,3 cm) |
| Bucket Hinge Pin | 144 in (365,8 cm) |
| Cab Height | 132 in (335,3 cm) |
| Overall Length | 252 in (640,1 cm) |
| Ground Clearance | 24 in (61,0 cm) |
| Tire Size | 14.5-25 / 20.5-25 |
John Deere 644B Specs (Weight, Lift Capacity, Hp, Dimensions)
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