644KMid-Size Wheel Loader
- Net Power: 167 kW (224 hp) at 1,700 rpm
- Operating Weight: 18 333 kg (40,417 lb.)
- Bucket Capacity: 3.2 m³ (4.25 cu. yd.)
- Breakout Force: 15 378 kg (33,903 lb.)
Features
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View of entire cab
Controls and SSM
644K Wheel Loader
Service access on K-Series Loaders
644K Wheel Loader
Cab that promotes ease of use and operator comfort
View of entire cab
Controls and SSM
Spacious and quiet cab boasts plenty of legroom and fatigue-beating ergonomics, including convenience features such as seat mounted loader controls and sealed-switch module (SSM) with keyless start and effortless push-button operation of numerous machine functions. Work harder with less effort.
- Quiet and spacious loader cab features powerful air-conditioning system and is internally pressurized to minimize dust and dirt intrusion during operation, allowing you to work in comfort the entire shift.
- Adjustable automotive-style louvers provide effective airflow to keep the glass clear and the pressurized cab comfortable.
- Rollover protective structure/falling object protective structure (ROPS/FOPS) certified cab provides superior level of safety for all operators
- Choose between single-lever joystick or two-lever fingertip pilot-operated hydraulic controls. Joystick F-N-R selector provides convenient direction and full-range gear changes. Both include innovative Quick-Shift feature for push-button gear changes, one gear at a time.
- Backlit touchpad in the SSM controls keyless start and 24 other machine functions, allowing the operator to activate boom height kick-out, return-to-carry, and return-to-dig from the seat.
- To help prevent unauthorized machine operation, the keyless-start security system requires a numeric pass code.
- Multi-language color liquid-crystal display (LCD) monitor provides push-button access to a wealth of machine data and functions.
- Deluxe fabric-covered seat with backrest extension features full adjustment, lumbar support, and air suspension with full-damping capability.
Get maximum productivity from John Deere Loaders
644K Wheel Loader
Whether you are a general contractor or working in an industrial application, the 644K Deere loader would be a perfect fit for your application. The machine is designed to reduce cycle times and higher torque capacity allowing you to accomplish more work during the day.
- Standard five speed PowerShift™ transmission with optional lockup torque converter feature, demonstrates excellent acceleration, speed cycles, and optimized power and fuel efficiency during transport, roading, and ramp climbing. Smart shift technology continuously evaluates speed and load conditions and adjusts clutch pack engagement for smooth and efficient shifting.
- Transmission shuttle shifting allows operator to change the direction of travel on the fly, saving extra time on direction change, and also reducing the axle heating and service brake wear.
- Closed-loop hydraulic system senses the load and delivers the flow needed for smooth combined functions and fast operation.
- Responsive steering and full 80° articulation increase maneuverability in tight areas for faster cycle times and fewer three-point turns.
- Adaptive clutch cutoff automatically provides more power to the hydraulic system, delivering smooth control at high engine rpms and low speeds, and allows better machine operation in all terrain without needing to change settings.
- Standard front axle differential lock can be engaged on the go. Optional High Traction package includes the 100% locking differentials for front and rear axles, targeted for the harshest conditions.
- Optional wheel-spin control boosts productivity by improving traction in soft underfoot conditions. It reduces tire wear and lowers fuel costs and operator fatigue.
- With ride control option, the lift cylinders act as shock absorbers, cushioning bumps to enable quick and easy navigation over rough terrain without material spill. Ride Control can be set to automatically engage at a specific travel speed from 1.5 to 24.0 km/h (0.93 to 14.9 mph).
- Additional operator assistance features include return-to-carry, return-to-dig and boom height kick-out to help operator keep productivity through the entire shift.
Save time and your bottom line with superior serviceability
Service access on K-Series Loaders
Deere loaders are not only designed to be productive but are also focused on minimizing your costs. Maintenance points have been minimized and access to them has been simplified, so no extra time is lost to prepare the machine for operation.
- Vertical spin-on filters allow quick, no-spill changes. 500-, 2,000-, and 4,000-hour engine, transmission, and hydraulic oil-change intervals help reduce operating costs.
- Easy-to-navigate LCD monitor displays diagnostic messages if problems occur
- All daily service points including fuel are conveniently grouped on the left side of the machine.
- Color-coded fluid-sample and diagnostic test ports help speed preventative maintenance and troubleshooting. Noninvasive design helps keep out contaminants.
- Conveniently located, easy-to-read sight gauges and see-through reservoirs let you check transmission, hydraulic, coolant, and windshield washer fluid levels with ease.
- Greasing is less messy, with centralized lube banks providing easy access to difficult-to-reach zerks. Periodic lube and maintenance chart conveniently confirms that nothing gets overlooked.
- Patented Quad-cool system allows easy access to all radiators and with reversing fan option requiring minimal maintenance, keeping the system clean for longer.
- Lower fuel consumption supported by:
- Efficient Common Rail system injecting only the required amount of fuel
- Auto-shutdown feature could be set in monitor to shut the machine off if idling longer than desired
Built to tackle the tasks at hand
644K Wheel Loader
Whatever the demand, John Deere K-Series Loaders provide extra agility and ability to a jobsite. Built on the highly reliable platform of their predecessors, these models are loaded with even more customer-inspired productivity- and uptime-increasing features.
- 4-plate loader frame provides structural rigidity and protection for hydraulic cylinders and hoses.
- Reinforced articulation joints with double-tapered roller bearings
- Reliable John Deere PowerTech diesel engines feature replaceable wet-sleeve cylinder liners that resist wear and dissipate heat more evenly, for longer life.
- Severe duty fuel filtration system to keep the engine safe when less than desired fuel quality is used.
- Quad-Cool™ cooling system for highest cooling efficiency and ease of cleaning. Hydraulically-driven fan is proportionally controlled based on the system temperatures. Optional automatic reversing feature keeps the cooling system free of debris longer.
- Durable TeamMate™ IV axles are standard for 644K. They include inboard planetaries as well as wet disk brakes. Axle coolers with filtration system are built in for the most demanding applications, involving long roading or heavy braking with stockpiling tasks.
- Solid state electronics eliminates mechanical switches and relays reducing electrical failure rate. Advanced onboard diagnostics provides detailed information on service codes or functional deviation.
- JDLink™ supports remote access to important machine data, as well as two-way communication between the equipment and Dealer technician in the office, enabling remote diagnostics and the ability to track parameter changes over time.