621K Wheel Tractor-Scraper
Quick loading, high travel speeds and the ability to load and dump on the run yield fast cycle times, allowing Cat Wheel Tractor-Scrapers to consistently deliver high productivity at the ...
Tractor Engine
- Flywheel Power - Tractor/Scraper
- 304 kW (407 hp)
Scraper Bowl
- Scraper Capacity - Heaped
- 24yd³
Transmission
- Top Speed - Loaded
- 33.5mile/h
Dimensions
- Width - Overall Machine
- 141.1in
- Width - Tractor
- 133.1in
- Width - Inside of Bowl
- 120in
- Width - Outside Rear Tires
- 128.9in
- Height - Overall Shipping
- 158.6in
- Height - Top of Cab
- 142.2in
- Ground Clearance - Tractor
- 21.9in
- Front of Tractor to Front Axle
- 122.8in
- Axle to Vertical Hitch Pin
- 21.3in
- Height - Scraper Blade Maximum
- 20.5in
- Wheel Base
- 314.9ft
- Rear Axle - Rear of Machine
- 114.1in
- Width - Rear Tire Centers
- 90.2in
- Width - Overall Machine - Ladder Down
- 149.2in
- Length - Overall Machine - Standard
- 551.8in
- Length - Maximum (Push-Pull)
- 613.2in
Safety Criteria Compliance Standards
- Reverse Alarm
- ISO 9533:2010
- Falling Object Protective Structure (FOPS)
- ISO 3449:2005 Level II
- Brakes
- ISO 3450:1996
- Rollover Protection Structure (ROPS)
- ISO 3471:2008 for up to 17 084 kg (37,664 lb)
- Seat Belt
- SAE J386:JUN1985
- Steering System
- ISO 5010:2007
Cab
- ROPS/FOPS
- Meets SAE and ISO standards
- Exterior Sound Level
- The exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A).
Service Refill Capacities
- Transmission System
- 24.76gal (US)
- Hydraulic System
- 21.926gal (US)
- Fuel Tank
- 216.09gal (US)
- Diesel Exhaust Fluid
- 8.057gal (US)
- Crankcase
- 8.08gal (US)
- Cooling System
- 11.89gal (US)
Engine
- Note
- Cat C13 engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards.
- Flywheel Power - Tractor
- 407HP
- Engine Model - Tractor
- Cat C13
- Rated Engine RPM - Tractor
- 2000r/min
General
- Width - Cut
- 10.3ft
- Top Speed - Loaded
- 33.5mile/h
- Tires - Tractor Drive
- 33.25R29**E3
- Tires - Scraper
- 33.25R29**E3
- Scraper Capacity - Struck
- 17.1yd³
- Scraper Capacity - Heaped
- 24yd³
- Rated Load
- 26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons)
- Overall Width
- 11.71ft
- Overall Shipping Height
- 13.22ft
- Maximum Depth of Spread
- 21.3in
- Maximum Depth of Cut
- 12.4in
- Fuel Tank Refill Capacity - Scraper
- 201gal (US)
- 180° Curb-to-Curb Turning Width
- 38.71ft
Push-Pull
- Operating Weight - Empty
- 80630lb
- Overall Length - With Bail Down
- 51.1ft
Non Push-Pull
- Operating Weight - Empty
- 79787lb
- Overall Length
- 45.9ft
Travel Speeds - Runout
- Transmission Gear - Eighth
- 33.5mile/h
- Transmission Gear - Fifth
- 13.6mile/h
- Transmission Gear - First
- 3.1mile/h
- Transmission Gear - Fourth
- 10.1mile/h
- Transmission Gear - Reverse
- 5.7mile/h
- Transmission Gear - Second
- 5.5mile/h
- Transmission Gear - Seventh
- 24.8mile/h
- Transmission Gear - Sixth
- 18.4mile/h
- Transmission Gear - Third
- 7.5mile/h
Implement Cycle Times
- Apron Lower
- 3.8s
- Apron Raise
- 2.95s
- Bail Lower
- 3.2s
- Bail Raise
- 1.8s
- Bowl Lower
- 3.5s
- Bowl Raise
- 3s
- Ejector Extend
- 5.2s
- Ejector Retract
- 6.7s
PRODUCTIVITY
- PRODUCTIVITY
- Up to 8% improvement in productivity.
- Advanced Productivity Electronic Control System (APECS) allows
the engine and transmission to communicate on a high level. This communication allows the machine to better utilize the power
and torque the engine is producing. The net result is moving more
material. - Use Ground Speed Control to set the desired top speed and the
machine will find the gear that works best for the engine and the
transmission, providing a lower fuel burn. - The Machine Speed Limit feature replaces Top Gear Selection.
- Auto-Stall assists in quickly bringing the transmission to an
operating temperature at start-up when the machine is working in a
cold climate region. - Boost productivity with the Payload Estimator feature (optional
attachment). Payload Estimator is an automatic feature when
ordered with Sequence Assist. - Cat®Payload Estimator for scrapers is an earthmoving solution for
optimal payload and jobsite efficiency. Payload Estimator achieves on-the-go weighing by using bowl lift cylinder pressure during the
loaded haul segment. Payload Estimator is optimized to be used
with Sequence Assist, which provides increased productivity with
less operator effort.
OPERATOR COMFORT AND CONTROL
- OPERATOR COMFORT AND CONTROL
- Reduce up to 14 individual operator commands per cycle with
- Sequence Assist (optional attachment).
- Steer with less effort using the newly designed high-pressure
steering system. - Enjoy interior improvements and a more ergonomic work
environment with a 21% larger cab than the G Series cab. - Intuitive, ergonomic controls keep operators focused on their work.
- Maintain desired cab temperature with automatic temperature
control.
BUILT-IN SAFETY
- BUILT-IN SAFETY
- Get in and out of the cab easier with the new powered access
ladder system (optional attachment). - Enhance an operator’s awareness of site surroundings with the
optional Work Area Vision System (WAVS). - Seat belt indicator provides visual and audible alerts when the seat
belt is not in use. - Advanced Cushion Hitch allows the cushion hitch to prevent end
stroke by having the ability to predict end stroke events and manage
the rate of dampening, resulting in reduced hitch maintenance and
improved operator ride in rough conditions.
- Get in and out of the cab easier with the new powered access
EASE OF OPERATIONS
- EASE OF OPERATIONS
- The spacious cab features easy, intuitive controls and excellent
visibility. The cab provides a comfortable working environment for
all-day operation. - Cat Advanced Ride Management (ARM) seat suspension reduces
end stroke movement of the load cylinder for a smoother ride. - Engine overspeed protection will automatically engage with no
operator input when the machine is in eighth gear. The machine
will assist in slowing the machine speed by canceling the throttle
command and engaging the engine compression brake.
- The spacious cab features easy, intuitive controls and excellent
CAT TECHNOLOGY
- CAT TECHNOLOGY
- Monitor, manage, and enhance jobsite operations.
- Hit target grade faster and more accurately with Cat GRADE technologies. Finish jobs in fewer passes and with less operator effort, saving you time and helping to increase profit.
- Product Link™ collects machine data that can be viewed online through web and mobile applications (optional attachment).
- Access information anytime, anywhere with Vision Link®– use it to make informed decisions that boost productivity, lower costs, simplify maintenance, and improve safety and security on your jobsite.
- Shorten the learning curve for inexperienced operators with Load Assist (optional attachment).
EFFICIENCY
- EFFICIENCY
- The new tractor hydraulic on-demand fan helps assist in lower fuel consumption.
- The Cat C13 tractor engine meets U.S. EPA Tier 4 Final or EU Stage V emission standards, contributing to lower fuel consumption.
- Using draft-arm overflow guards diverts material away from the bowl, preventing material from getting caught between the draft arms and the bowl sides.
- Cat Grade Control (optional attachment) intelligently ensures the machine does not cut below grade in a cut area or overfill in the fill area.