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John Deere 644A Specs
John Deere 644A wheel loader specifications: type Wheel Loader, horsepower 97.7 kW, weight 1143.1 kg, tipping capacity 8436.8 kg.
Manufacturer specifications
| Specification | Metric | Imperial |
|---|---|---|
| Type | Wheel Loader | |
| Horsepower | 97.7 kW | 131 hp |
| Weight | 1143.1 kg | 2520 lbs |
| Tipping Capacity | 8436.8 kg | 18600 lbs |
| Max Speed | 37.0 km/h | 23 mph |
| Aspiration | Turbocharged | |
| Displacement | 6620.4 cc | 404 cu in. |
| Alternator Supplied Amperage | 55 amps | |
| Operating Voltage | 12 V | |
| Rated Speed | 2400 RPM | |
| Torque Speed | 1600 RPM | |
| Net Power | 97.7 kW | 131 hp |
| Gross Power | 105.1 kW | 141 hp |
| Peak Torque | 467.8 N-m | 345 lbs ft |
| Fuel Capacity | 189.3 l | 50 gal |
| Engine Oil Capacity | 16.3 l | 4.3 gal |
| Cooling Capacity | 34.1 l | 9 gal |
| Hydraulic System Capacity | 66.2 l | 17.5 gal |
| Transmission Oil Capacity | 37.1 l | 9.8 gal |
| Differential Front Capacity | 22.7 l | 6 gal |
| Differential Rear Capacity | 24.6 l | 6.5 gal |
| Transmission Type | Power shift | |
| No of Forward Gears | 4 | |
| No of Reverse Gears | 2 | |
| Rear Axle Oscillation | 22 ° | |
| Max Speed (Forward) | 37.0 km/h | 23 mph |
| Max Speed (Reverse) | 15.3 km/h | 9.5 mph |
| Pump type | Variable axial piston | |
| Pump Flow | 227.1 LPM | 60 GPM |
| Relief Pressure | 155.1 bar | 2250 psi |
| Operating Weight | 1143.1 kg | 2520 lbs |
| Tipping Load | 8436.8 kg | 18600 lbs |
| Bucket Capacity (Heaped) | 1.9 m³ | 2.5 cu yds |
| Bucket Capacity (Struck) | 1.6 m³ | 2.1 cu yds |
| Bucket Width | 274.3 cm | 108 in |
| Breakout Force | 18833.1 kg | 41520 lbs |
| Reach At Max Lift And Dump | 91.4 cm | 36 in |
| Dump Clearance At Max Raise | 274.3 cm | 108 in |
| Turning Radius | 487.7 cm | 192 in |
| Wheelbase | 274.3 cm | 108 in |
| Bucket Hinge Pin | 365.8 cm | 144 in |
| Cab Height | 304.8 cm | 120 in |
| Overall Length | 640.1 cm | 252 in |
| Ground Clearance | 30.5 cm | 12 in |
| Tire Size | 16-24 / 20.5- 25 |
Source: heavyequipments.net archive (imported 2026-10). Values may vary by variant and production year; seller claims are shown separately on the listing page.
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