Cat 621 Wheel Tractor-Scraper for Sale

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 push-loaded and high travel speeds, it’s always an earthmover’s first tool of choice when working in challenging load areas. With an open bowl and a single engine, this machine is designed to handle a wide range of material types ranging from sand to ripped rock 609.6 mm (24 “) or less in size.

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Key Specs

Flywheel Power - Tractor/Scraper 304 kW (407 hp)
Scraper Capacity - Heaped 24 yd³
Top Speed - Loaded 33.5 mile/h

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Benefits

Increased Comfort

Ergonomic controls and a newly redesigned cab interior provide a more comfortable and efficient working environment all day long

Improved Productivity

Improvements in fuel efficiency and responsive APECS transmission controls deliver more productivity in most applications

Additional Safety

New safety features help operators be more productive and work more efficiently all day long

Specifications
Benefits and Features
Standard/Optional Features

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 - Overall Machine - Ladder Down	149.2in
Length - Overall Machine - Standard	551.8in
Length - Maximum (Push-Pull)	613.2in
Width - Rear Tire Centers	90.2in

General

Maximum Depth of Cut	12.4in
Fuel Tank Refill Capacity - Scraper	216.1gal (US)
180° Curb-to-Curb Turning Width	38.71ft
Scraper Capacity - Heaped	24yd³
Overall Width	11.75ft
Maximum Depth of Spread	21.3in
Overall Shipping Height	13.22ft
Tires - Tractor Drive	33.25R29**E3
Width - Cut	10.3ft
Scraper Capacity - Struck	17.1yd³
Top Speed - Loaded	33.5mile/h
Tires - Scraper	33.25R29**E3
Rated Load	26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons)

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
Rated Engine RPM - Tractor	2000r/min
Engine Model - Tractor	Cat® C13

Service Refill Capacities

Fuel Tank	216.09gal (US)
Crankcase	8.08gal (US)
Hydraulic System	21.926gal (US)
Diesel Exhaust Fluid	8.057gal (US)
Cooling System	11.89gal (US)
Transmission System	24.76gal (US)

Non Push-Pull

Overall Length	45.9ft
Operating Weight - Empty	79787lb

Push-Pull

Operating Weight - Empty	80630lb
Overall Length - With Bail Down	51.1ft

Cab

Exterior Sound Level	The exterior sound power level for the standard machine (ISO 6393:2008) is 118 dB(A).
ROPS/FOPS	Meets SAE and ISO standards

Safety Criteria Compliance Standards

Reverse Alarm	ISO 9533:2010
Brakes	ISO 3450:1996
Rollover Protection Structure (ROPS)	ISO 3471:2008 for up to 17 084 kg (37,664 lb)
Falling Object Protective Structure (FOPS)	ISO 3449:2005 Level II
Steering System	ISO 5010:2007
Seat Belt	SAE J386:JUN1985

Travel Speeds - Runout

Transmission Gear - Eighth	33.5mile/h
Transmission Gear - Third	7.5mile/h
Transmission Gear - Fourth	10.1mile/h
Transmission Gear - First	3.1mile/h
Transmission Gear - Fifth	13.6mile/h
Transmission Gear - Reverse	5.7mile/h
Transmission Gear - Seventh	24.8mile/h
Transmission Gear - Sixth	18.4mile/h
Transmission Gear - Second	5.5mile/h

Implement Cycle Times

Ejector Retract	6.7s
Bail Raise	1.8s
Apron Raise	2.95s
Apron Lower	3.8s
Ejector Extend	5.2s
Bowl Raise	3s
Bowl Lower	3.5s
Bail Lower	3.2s

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

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

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.

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.

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

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.

Standard Equipment

Note	Standard and optional equipment may vary. Consult your Cat dealer for details.

Power Train - Tractor

Cat^® C13 engine with MEUI^™
Cat engine brake
Electric start, 24 Volt
Air cleaner, dry type with precleaner
Fan, hydraulic
Ground level engine shutdown
Radiator, aluminum unit core, 9 fins per inch
Guard, crankcase
Muffler (only for less or non-regulated regions engine arrangement only)
Starting aid, ether
Braking system: - Primary and secondary, wet disc, hydraulic - Parking, hydraulic-released, spring-applied - Throttle lock
Transmission: - 8-speed planetary power shift - ECPC control - APECS software - Programmable top gear selection - Transmission hold - Differential lock - Guard, power train - Standard tire spin reduction - Ground speed control - Machine speed limit - Differential lock protection

Integrated Technologies

Sequence Assist and Cat Payload Arrangement

Power Train - Scraper

Braking system: - Primary and secondary, wet disc, hydraulic

Electrical - Tractor

Alternator, 150 Amp
Batteries (4), 12V, 1,000 CCA, maintenance free, high output
Electrical system, 24V
Lighting system: - Headlights, halogen - Turn signals with hazard function, LED floodlights, (2) cutting edge (1) bowl, halogen side vision (2)
Starting/charging receptacle

Electrical - Scraper

Alarm, backup
Lighting system: - Brake lights, LED - Turn signals with hazard function, LED

Operator Environment - Tractor

Camera arrangement - WAVS
HVAC system, heat, AC, defrost
Thermostat control of HVAC system
Coat hook
Lunchbox platform with holding strap
Diagnostic connection (2)
12V power ports (2)
Differential lock (1)
Dome courtesy light
Horn, electric
T-Handle implement control
Mirror, rearview
Radio ready
ROPS/FOPS cab, pressurized
Keypad switches: - Throttle lock - Wipers/washers - Hazard lights - Retarding level select - Work lights on, off - Information mode on Messenger Display
Safety tab rocker switches
Seat belt, static two-piece
Seat, Cat Advanced Ride Management (ARM), Cat Comfort Series 3, rotates 30 degrees
Steering wheel, tilt, telescoping, padded
Windows, right side emergency egress
Windows, sliding
Windows, laminated, zipped in
Windshield wipers, front and rear windows, includes washers
Door lock
Interactive touchscreen vehicle information display
Gauges, warnings include: - Coolant temperature - Engine oil temperature - Hydraulic oil temperature - DPF temperature - Fuel level - Park brake - Implement lockout - Brake system - Regeneration required - Throttle lock - System voltage - Secondary steering - Bail down - Ejector auto - Differential lock - Apron float - Transmission hold - Cushion hitch - High beam lights - Action lamp - Engine speed, rpm - Gear selection - DEF fill levels

Fluids

Extended Life Coolant to -37° C (-34° F)

Other Standard Equipment - Tractor

Advanced cushion hitch
Accumulators (cushion hitch) with Canadian Registration Number (CRN)
Fast oil change
Fenders, non-metallic
Heater, engine coolant 120V
Rims (2)
Tow pin, front
Vandalism locks
Heater, engine coolant 120V

Other Standard Equipment - Scraper

Fender, scraper
Bowl: - 18.4 m3 (24 yd3), heaped - 14.1 m3 (18.4 yd3), struck
Vandalism locks
Hydraulic position sensing cylinders (bowl lift and apron)

Optional Equipment

Note	Standard and optional equipment may vary. Consult your Cat dealer for details.

Steering Arrangements

Secondary Steering Arrangement