Specification sheet Wheel Loader Ref john-deere-644k-hybrid-wheel-loader
John Deere 644K HYBRID
The John Deere 644K HYBRID is a wheel loader with an operating weight of 40,434.99 lb (18,341 kg).
✓ QA-verified — every figure checked for unit consistency, physical possibility, and class plausibility; failures withheld → Operating weight
40,434.99lb
18,341kg
◆Where it sits in its classpercentile · small wheel loaders
Among 439 small wheel loaders (22,000–45,000 lb), the John Deere 644K HYBRID sits above the median for its class:
- Operating weight 40,430 lb heavier than 85% (n=439)
Not positioned on engine power, bucket capacity — withheld or unpublished for this machine.
01 Engine Specification
| Pump | Piston | |
|---|---|---|
| Engine Output-Net | 229.4hp | 171kw |
| Transmission Type | Powershift w/Hybrid-Electric Drive | |
| Engine Make | John Deere | |
| Engine Model | PowerTech PSX 6068 | |
| Torque | 731lb ft | 991Nm |
| Rated Speed | 1700rpm | |
| Displacement | 415cu in | 6.8L |
| Torque Rise | 19% | |
| System Voltage | 24V | |
| Emission Level | Tier 4 | |
| Alternator | 100amps |
02 Driveline Specification
| Ride Control System | Optional | |
|---|---|---|
| Service Brake Type | Wet Disc | |
| Parking Brake Type | Wet Multi Disc - Transmission | |
| Differential Lock | Front- Locking, Rear- Open | |
| Service Brake Actuation | Hydraulic | |
| Tire Size - Standard | 23.5 R25 | |
| Service Brake - Location | Axle Inboard |
03 Capacities Specification
| Hydraulic Tank | 28.1gal | 106L |
|---|---|---|
| Heaped Capacity | 4.2yd3 | 3.2m3 |
| Transmission | 10.1gal | 37.9L |
04 Operational Specification
| Operating Weight | 40435lb | 18341kg |
|---|---|---|
| Fuel Capacity | 104.9gal | 397L |
| Front Axle/Diff Fluid Capacity | 5.9gal | 22L |
| Rear Axle/Diff Fluid Capacity | 5.9gal | 22L |
05 Transmission Specification
| Pump Flow | 78.5gal/min | 297L/min |
|---|---|---|
| System Pressure | 251.7psi | 1735.2kPa |
06 Bucket Dimensions
| Breakout - Bucket | 15378 (33903) kgf (lbf) | |
|---|---|---|
| Bucket Capacity - Smallest | 4.06yd3 | 3.1m3 |
| Largest Bucket Capacity | 4.19yd3 | 3.2m3 |
07 Dimensions Dimensions
| Ground Clearance | 18.15in | 461mm |
|---|---|---|
| Length With Bucket On Ground | 27.24ft in | 8300mm |
| Width Over Tires | 9.44ft in | 2875mm |
| Wheelbase | 10.7ft in | 3260mm |
| Hinge Pin - Max Height | 13.52ft in | 4120mm |
| Reach At Max Lift And Dump | 5.29ft in | 1610mm |
| Turning Circle | 43.57ft in | 13280mm |
| Height Over Cab | 11.26ft in | 3430mm |
?Questions & answersfrom this machine's data
- How much does a John Deere 644K HYBRID wheel loader weigh?
- A John Deere 644K HYBRID wheel loader has an operating weight of 40,435 lb (18,341 kg).
- How much fuel does a John Deere 644K HYBRID wheel loader hold?
- A John Deere 644K HYBRID wheel loader has a fuel capacity of 104.9 gal (397 L).
- What is the ground clearance of a John Deere 644K HYBRID wheel loader?
- A John Deere 644K HYBRID wheel loader has a ground clearance of 18.2 in (461 mm).
- How long is a John Deere 644K HYBRID wheel loader?
- A John Deere 644K HYBRID wheel loader has an overall length of 27.2 ft (8,300 mm) with the bucket on the ground.
Method. Figures are manufacturer reference specifications, not measurements. Every value is checked for unit consistency, physically possible magnitude, and plausibility for its equipment class before publication; figures that fail any check are withheld rather than shown, and figures reconstructed from related data are marked above. Imperial and metric figures are reproduced as published, except where a note states otherwise.