DEERE - 644 X-TIER Back

DEERE 644 X-TIERMID-SIZE WHEEL LOADERS

ON THE CUTTING EDGE.
The multipurpose 644 X-Tier Wheel Loader is designed and purpose built to take it on and go beyond. With its combined innovative E-Drive and PowerShift transmission system that delivers strong pushing power and fast ramp-climbing ability, tasks ranging from loading trucks to maintaining stockpiles to heaping hoppers can be accomplished with efficiency and ease. And this impressive iron runs quiet, too. The 644 X-Tier is packed to the max with the state-of-the-art technology and innovative features that can help take your operation to new heights of productivity and performance.

POWER WITHOUT COMPROMISE
Choose between variable and constant engine speeds in normal and performance modes. Drivetrain and hydraulic functions are powerful, responsive, and quick, to deliver exceptional productivity in the most demanding applications.

E-DRIVE INNOVATION
Innovative E-Drive transmission system delivers premium performance and efficiency. System includes an engine-driven generator plus an inverter to control the electric motor that drives a simplified PowerShift transmission.

MOVE MORE WITH LESS
Efficiency is outstanding, with up to 18-percent more tons moved per gallon of fuel burned than top competitors.* *As measured in a closed-circuit test conducted in September 2020 against similarly equipped top competitors. All machines were operated at maximum productivity in controlled conditions.

MATERIAL MATTERS
SmartWeigh option features dynamic weighing technology that allows operators to weigh without interrupting workflow and removes the need to lower and reraise the boom after tipoff. Shared through the onboard monitor, SmartWeigh is easy to calibrate and effortlessly integrates with the John Deere Operations Center so you can track and visualize payload data from almost anywhere. Available as a factory-installed or field-kit option, you can also try SmartWeigh at a low cost for 250 machine hours.

VISION AND DETECTION
SYSTEM OFFERINGS
Active jobsites present many operational challenges, including multiple machines, crew members, and bystanders. The John Deere Advanced Vision System (AVS) and SmartDetect can help enhance operator awareness to confidently navigate busy work areas:
Optional AVS includes two digital cameras mounted on the rearview-mirror platforms that integrate with the rearview (backup) camera for a single display on a dedicated in-cab monitor.
Paired with a high-resolution camera and a dedicated display, optional Advanced Rear Object-Detection System (ARODS) utilizes a radar system that provides audible alerts when objects are detected at the rear of the machine. ARODS helps operators visualize the loaders reversal path based on its articulation.
Available as an easily installed field kit, optional SmartDetect alerts operators of objects entering the machines projected travel path, emitting sound and visual alerts inside the cab as well as an audible alarm to detected bystanders. SmartDetect requires AVS, ARODS, and a G5 display as well as software activation.
Building on SmartDetect capabilities, optional SmartDetect Digital is equipped with advanced cameras that integrate with a dedicated G5 display to provide elevated operator and bystander alerts. Easily accessed through the user-friendly John Deere Operations Center mobile app, the system notifies supervisors of near-miss events with corresponding video. Weekly reports of digital usage and jobsite events within a heat-map summary are also available.

SMOOTH OPERATOR
Purpose-built PowerShift transmission provides smooth control through four forward speed ranges. Direction changes are accomplished by the electric motor, completely eliminating shifting in some truck- loading applications.

MAKE A GOOD IMPRESSION
Running wide open at 1,600 rpm, the in-cab noise rating is just 70 dBA. Reduced exterior noise makes the 644 X-Tier a great choice when working in residential areas.

LEVEL UP
AutoLevel enables near-perfect parallelism throughout the boom-raise-and-lower cycle, letting operators set their desired attachment angle to within two degrees.

FIELD PROVEN
John Deere E-Drive technology in our 644 and 944 Wheel Loaders has collectively logged over three million field hours a testament to the durability and performance of our transmission components and systems.

THE COAST IS CLEAR
Coast-control feature slows the loader down without the operator having to touch a pedal, helping extend service-brake wear life.

CREATURE COMFORTS
Spacious cab boasts ample legroom and features ergonomically placed controls, foot pedals, and sealed- switch module. Seat-mounted hydraulic controls include two programmable multifunction buttons and intuitive electrohydraulic (EH)controls.

INTEGRATED CONTROLS
With the capacity to control up to six functions on the single hydraulic joystick, cycle times and productivity when using hydraulic attachments are improved.

THE BUCKET LIST
Enhanced-performance buckets with integrated spill guards, curved side cutters, and impressive rollback maximize bucket-fill performance and material retention. Choose from hi-vis and JRB-style couplers to boost fleet versatility and machine utilization.

TIME TO TAKE SIDES
All daily service points including fuel are conveniently grouped on the left side of the machine at ground level, for easy access. Hinged doors enable wide-open access to the engine, cooling system, and other components.

CONNECTED MACHINES
John Deere construction equipment comes with in-base connectivity free from subscriptions or annual renewals. Analyze critical machine data, track utilization, review diagnostic alerts, and more from the John Deere Operations Center. The Operations Center also enables John Deere Connected Support, which uses data from thousands of connected machines to proactively address issues before they arise. With your approval, your dealer can also remotely monitor machine health, diagnose problems, and even update machine software without a trip to the jobsite.*

*Availability varies by region and product. Options not available in every country.

ADDITIONAL EQUIPMENT
ENGINE
Wet-sleeve cylinder liners
Programmable auto-idle and auto shutdown
Selected idle adjustment from 900-1250 rpm
Starter excessive-cranking protection
Automatic engine cool-down timer
Automatic derating for exceeded system temperatures
Serpentine drive belt for automatic tensioner
Electrical fuel-priming pump
Dual-stage fuel filter and water separator
500-hour vertical spin-on oil filter
Engine compartment light (Optional)
Chrome Exhaust Stack (Optional)
Automatic glow plugs for cold start
Engine-block heater (recommended for cold starts below 23 deg. C [10 deg. F]) (Optional)
Centrifugal engine air pre-cleaner (Optional)
Throttle lock (Optional)

POWERTRAIN
Clutch cutoff with 4 operator settings: Automatic, level ground, small slope, or steep slope
Programmable maximum high gear
Clutch calibration engaged from monitor
2,000-hour vertical spin-on transmission filter
Transmission fill tube and sight gauge
Transmission diagnostic ports
4-speed transmission with non-lockup torque converter
5-speed transmission with lockup torque converter
Front locking differential
Rear locking differential (Optional)
Brake retractors and adjusters
Automatic differential lock (Optional)
Axle oil temperature sensing

QUAD-COOL COOLING SYSTEM
Heavy-duty, trash-resistant radiator and high-ambient cooling package
2-side access to all coolers
Isolated from engine compartment
Engine radiator
Engine oil cooler
Hydraulic oil cooler (oil to air)
Transmission oil cooler (oil to air)
Charge air cooler (air to air)
Fuel cooler
Coolant recovery tank
Antifreeze, 37 deg. C (34 deg. F)
Cool-on-demand, hydraulically driven, swing-out fan
Enclosed fan safety guard
Automatic reversing fan drive (Optional)
Axle and service-brake coolers (Optional)

HYDRAULICS
Electrohydraulic (EH) controls with soft stops and adjustable settings
In-cab adjustable automatic return-to-dig bucket positioner
In-cab adjustable automatic boom-height kickout/return to carry
Reservoir with sight gauge and fill strainer
Hydraulic diagnostic ports
4,000-hour in-tank filter
2 function joystick with F-N-R
2 function 2-lever fingertip controls and steering column F-N-R (Optional)
3 function joystick with F-N-R and integrated 3rd-function roller (Optional)
3 function 3-lever fingertip controls and steering column F-N-R (Optional)
4 function joystick with F-N-R and integrated 3rd/4th-function rollers (Optional)
Programmable multifunction buttons (2)
Adjustable and continuous hydraulic-flow settings
Programmable attachment settings
Ride control, automatic with monitor-adjustable speed settings (Optional)
Hydraulic control system for quick-coupler locking pins (Optional)
Hydrau XR cold-temperature hydraulic fluid recommended below -25 deg. C (-13 deg. F)

STEERING SYSTEMS
Conventional steering wheel with spinner knob
Secondary steering (Optional)
Joystick steering (including conventional steering column) with gearshift, F-N-R, and horn (Optional)

ELECTRICAL
Solid-state electrical power-distribution system
Lockable master electrical-disconnect switch
Battery-terminal safety covers
By-pass start safety cover at starter
Remote jump-start access in battery box
Pre-wired for beacon/strobe light
Lights: Halogen driving lights with guards (2) / Front (4), rear cab (2), and rear grille (2) work lights / LED front turn signals and flashers / LED stop- and taillights
Premium LED light package (all exterior lights are heavy-duty LED)
Programmable courtesy lights
Horn, electric
Reverse warning alarm
Multifunction/multi-language 178-mm (7 in.) LCD color monitor includes: Digital instruments Analog display (engine coolant temperature and transmission oil temperature) / Digital display (engine rpm, transmission gear/direction indicator, hour meter, fuel level, diesel exhaust fluid (DEF) level, speedometer, and average fuel consumption)
Multifunction/multi-language 127-mm (5 in.) LCD color monitor includes: Digital instruments Analog display (hydraulic oil temperature, engine coolant temperature, transmission oil temperature, and engine oil pressure) / Digital display (engine rpm, transmission gear/direction indicator, hour meter, fuel level, DEF level, speedometer, odometer, and average fuel consumption)
Integrated cycle counter with 5 categories (Optional)
Indicator lights: Standard and selected options / Amber caution and red stop
Operator-warning messages
Built-in diagnostics: Diagnostic-code details / Sensor values / Calibrations / Individual circuit tester
Electrical corrosion-prevention package (Optional)
Standard AM/FM/Weather-Band (WB) radio with remote auxiliary port
Premium AM/FM/WB radio with Bluetooth, remote auxiliary port, and remote USB port (premium cab only) (Optional)
24- to 12-volt, 8-amp converter and cab power ports (3)
24- to 12-volt, 15- or 30-amp converter and cab power ports (3) (Optional)

OPERATORS STATION
Standard cab with air conditioning/heater (ROPS/FOPS Level 1, isolation mounted)
Premium cab with air conditioning/heater (ROPS/FOPS Level 1, isolation mounted) (Optional)
Automatic temperature control (premium cab only) (Optional)
Rear window defrost vent
Keyless start with multiple security modes
Sealed-switch module with function indicators
Seat with backrest extension, deep foam, fabric cover, and adjustable air suspension
Premium seat with high-wide back- and headrest extension, heated and ventilated, leather/fabric cover, and adjustable heavy-duty air suspension (Optional)
Hydraulic controls integrated to seat
High-visibility, bright-orange seat belt, 76 mm (3 in.), with retractor
4-point seat-belt harness (Optional)
Seat-belt indicator beacon light (Optional)
Cup holder and cup/Thermos holder with retaining strap
Lunch-box/cooler holder with tie-down brackets
Coat hook
LED dome and reading light
Rubber floor mat
Dual-tilt steering column
Operators manual storage compartment
Outside (2) and inside (1) rearview mirrors
Heated outside mirrors with convex lens (Optional)
In-cab adjustable heated outside mirrors with convex lens (premium cab only) (Optional)
Left-side operator-station access
Fall-arrest system anchor points tested to 2268 kg (5,000 lb.) on front of cab
Slip-resistant steps and ergonomic handholds
Pull-down front sun visor
Front and rear intermittent windshield wipers and washers
Powered cab air pre-cleaner (Optional)
Beacon bracket only (Optional)
Beacon bracket with strobe beacon (Optional)
Rearview camera
Rearview camera with radar object- detection system (Optional)
Dedicated 178-mm (7 in.) rear camera display (Optional)
Advanced Rear Object-Detection System (Optional)
Advanced Vision System (Optional)
Payload scale ready
SmartWeigh ready + trial (Optional)
SmartWeigh (Optional)
SmartDetect (Optional)
SmartDetect Digital (Optional)
Fire extinguisher (Optional)

LOADER LINKAGE
Z-Bar loader linkage (parallel lift)
High-lift Z-Bar loader linkage (Optional)

BUCKETS AND ATTACHMENTS
Full line of Deere pin-on buckets, coupler buckets, and forks (Optional)
Hi-Vis hydraulic coupler that accepts Euro-pattern attachments (ISO) (Optional)
John Deere hydraulic coupler that accepts JRB-pattern attachments (Optional)

OVERALL VEHICLE
JDLink wireless communication system (available in specific countries; see your dealer for details)
NeverGrease rear-axle oscillation
Front and rear tie-downs
Rear cast bumper/counterweight with rear hitch and locking pin
Articulation locking bar
Loader boom service locking bar
40-deg. steering articulation to each side with rubber-cushion stops on frame
Vandal protection with lockable engine enclosures, counterweight compartments, and filler access for radiator/fuel/DEF/ hydraulic transmission
Left-side service steps and handholds
Right-side service steps and handrails
Left-side close-mounted steps
Storage compartment
Fuel-tank fill strainer
Heavy-duty fuel-tank guard
Ground-level fuel and DEF fill
Same-side ground-level daily servicing
23.5R25 tires on 3-piece rims
Environmental drains and sample ports for engine, transmission, hydraulic oils, and engine coolant (Optional)
Fenders, front narrow
Fenders, front full width
Fenders, front and rear full width (Optional)
Fenders, front and rear full width with mud flaps (Optional)
Less wheels and tires with axle stops (Optional)
Rims less tires (Optional)
Transmission side-frame and bottom guards (Optional)
Lift eyes (Optional)
License-plate bracket and light (Optional)

Similar models may be shown in addition to the featured model. Equipment may be shown with options. Specifications are subject to change without prior notice.
Express Financing Get Pre-Approved
Get a FR8Star Shipping Estimate