621 Wheel Tractor-Scraper
Our wheel tractor-scrapers have long been considered the basic method of moving volumes of material, and the Cat® 621 Wheel Tractor-Scraper is no exception. Known for its ability to be ...
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
- 314.9in
- Rear Axle - Rear of Machine
- 114.1in
- Width - Rear Tire Centers
- 90.2in
- Length - Overall Machine - Standard
- 551.8in
- Width - Overall Machine - Ladder Down
- 149.2in
- Length - Maximum (Push-Pull)
- 613.2in
Non Push-Pull
- Operating Weight - Empty
- 79787lb
- Overall Length
- 45.9ft
Safety Criteria Compliance Standards
- Falling Object Protective Structure (FOPS)
- ISO 3449:2005 Level II
- Rollover Protection Structure (ROPS)
- ISO 3471:2008 for up to 17 084 kg (37,664 lb)
- Brakes
- ISO 3450:1996
- Reverse Alarm
- ISO 9533:2010
- Steering System
- ISO 5010:2007
- Seat Belt
- SAE J386:JUN1985
Service Refill Capacities
- Transmission System
- 24.76gal (US)
- Cooling System
- 11.89gal (US)
- Diesel Exhaust Fluid
- 8.057gal (US)
- Hydraulic System
- 21.926gal (US)
- Crankcase
- 8.08gal (US)
- Fuel Tank
- 216.09gal (US)
Engine
- Engine Model - Tractor
- Cat® C13
- Rated Engine RPM - Tractor
- 2000r/min
- Flywheel Power - Tractor
- 407hp
- Note
- Cat® C13 engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards.
General
- Rated Load
- 26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons)
- Tires - Scraper
- 33.25R29**E3
- Top Speed - Loaded
- 33.5mile/h
- Scraper Capacity - Struck
- 17.1yd³
- Width - Cut
- 10.3ft
- Tires - Tractor Drive
- 33.25R29**E3
- 180° Curb-to-Curb Turning Width
- 38.71ft
- Fuel Tank Refill Capacity - Scraper
- 216.1gal (US)
- Maximum Depth of Cut
- 12.4in
- Overall Shipping Height
- 13.22ft
- Maximum Depth of Spread
- 21.3in
- Overall Width
- 11.75ft
- Scraper Capacity - Heaped
- 24yd³
Cab
- ROPS/FOPS
- Meets SAE and ISO standards
- Exterior Sound Level
- The exterior sound power level for the standard machine (ISO 6393:2008) is 118 dB(A).
Push-Pull
- Overall Length - With Bail Down
- 51.1ft
- Operating Weight - Empty
- 80630lb
Implement Cycle Times
- Apron Lower
- 3.8s
- Apron Raise
- 2.95s
- Bail Raise
- 1.8s
- Ejector Retract
- 6.7s
- Bail Lower
- 3.2s
- Bowl Lower
- 3.5s
- Bowl Raise
- 3s
- Ejector Extend
- 5.2s
Travel Speeds - Runout
- Transmission Gear - Second
- 5.5mile/h
- Transmission Gear - Sixth
- 18.4mile/h
- Transmission Gear - Seventh
- 24.8mile/h
- Transmission Gear - Reverse
- 5.7mile/h
- Transmission Gear - Fifth
- 13.6mile/h
- Transmission Gear - First
- 3.1mile/h
- Transmission Gear - Fourth
- 10.1mile/h
- Transmission Gear - Third
- 7.5mile/h
- Transmission Gear - Eighth
- 33.5mile/h
BE MORE PRODUCTIVE
- BE MORE PRODUCTIVE
- Advanced Productivity Electronic Control System (APECS) allows the engine and transmission to communicate on a high level. This communication allows the machine to utilize better 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 Cat Payload feature (optional attachment). Cat Payload is an automatic feature when ordered with Sequence Assist.
- Cat Payload for scrapers is an earthmoving solution for optimal payload and job site efficiency. Cat Payload achieves on-the-go weighing by using bowl lift cylinder pressure during the loaded haul segment. Cat Payload is optimized to be used with Sequence Assist, which provides increased productivity with less operator effort.
WORK IN COMFORT
- WORK IN COMFORT
- 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.
DESIGNED FOR SAFETY
- DESIGNED FOR SAFETY
- Enhance an operator’s awareness of site surroundings with the
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 predicting endstroke events and managing the
rate of dampening, resulting in reduced hitch maintenance and improved
operator ride in rough conditions.
- Enhance an operator’s awareness of site surroundings with the
EASY TO OPERATE
- EASY TO OPERATE
- The spacious cab features easy, intuitive controls and excellent visibility
. The cab provides a comfortable working environment for all-day
operations. - Cat Advanced Ride Management (ARM) seat suspension reduces
endstroke 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's speed by canceling the throttle command
and engaging the engine compression brake.
- The spacious cab features easy, intuitive controls and excellent visibility
INTEGRATED CAT TECHNOLOGIES
- INTEGRATED CAT TECHNOLOGIES
- Monitor, manage, and enhance job site 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.
- Vision 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 job site.
- Shorten the learning curve for inexperienced operators with Cat grade control and load assist. (optional attachment).
EXECUTE EFFICIENCY
- EXECUTE 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.