621 Wheel Tractor-Scraper

Exterior View
Interior View

621 Wheel Tractor-Scraper

Flywheel Power – Tractor/Scraper304 kW (407 hp)
Scraper Capacity – Heaped24 yd³
Top Speed – Loaded33.5 mile/h
Width – Overall Machine141.1 in
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Learn more about our 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.

Flywheel Power - Tractor/Scraper
304 kW (407 hp)
Scraper Capacity - Heaped
24yd³
Top Speed - Loaded
33.5mile/h
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
Length - Overall Machine - Standard
551.8in
Length - Maximum (Push-Pull)
613.2in
Width - Overall Machine - Ladder Down
149.2in
Width - Rear Tire Centers
90.2in
Overall Shipping Height
13.22ft
Overall Width
11.75ft
Scraper Capacity - Heaped
24yd³
Fuel Tank Refill Capacity - Scraper
216.1gal (US)
Tires - Scraper
33.25R29**E3
Width - Cut
10.3ft
Maximum Depth of Spread
21.3in
Top Speed - Loaded
33.5mile/h
Rated Load
26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons)
180° Curb-to-Curb Turning Width
38.71ft
Scraper Capacity - Struck
17.1yd³
Maximum Depth of Cut
12.4in
Tires - Tractor Drive
33.25R29**E3
Engine Model - Tractor
Cat C13
Flywheel Power - Tractor
407hp
Note
Cat C13 engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards.
Rated Engine RPM - Tractor
2000r/min
Hydraulic System
21.926gal (US)
Crankcase
8.08gal (US)
Transmission System
24.76gal (US)
Cooling System
11.89gal (US)
Fuel Tank
216.09gal (US)
Diesel Exhaust Fluid
8.057gal (US)
Operating Weight - Empty
79787lb
Overall Length
45.9ft
Overall Length - With Bail Down
51.1ft
Operating Weight - Empty
80630lb
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
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
Falling Object Protective Structure (FOPS)
ISO 3449:2005 Level II
Seat Belt
SAE J386:JUN1985
Steering System
ISO 5010:2007
Transmission Gear - Seventh
24.8mile/h
Transmission Gear - Fifth
13.6mile/h
Transmission Gear - First
3.1mile/h
Transmission Gear - Sixth
18.4mile/h
Transmission Gear - Second
5.5mile/h
Transmission Gear - Third
7.5mile/h
Transmission Gear - Fourth
10.1mile/h
Transmission Gear - Eighth
33.5mile/h
Transmission Gear - Reverse
5.7mile/h
Apron Raise
2.95s
Bowl Raise
3s
Ejector Retract
6.7s
Bowl Lower
3.5s
Apron Lower
3.8s
Ejector Extend
5.2s
Bail Lower
3.2s
Bail Raise
1.8s
Standard and optional equipment may vary. Consult your Cat dealer for details.
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
Braking system: - Primary and secondary, wet disc, hydraulic
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
Alarm, backup
Lighting system: - Brake lights, LED - Turn signals with hazard function, LED
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
Messenger 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
Extended Life Coolant to -37° C (-34° F)
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
Bowl: - 18.4 m3 (24 yd3), heaped - 14.1 m3 (18.4 yd3), struck
Vandalism locks
Hydraulic position sensing cylinders (bowl lift and apron)
Standard and optional equipment may vary. Consult your Cat dealer for details.
Secondary Steering Arrangement
Sequence Assist Arrangement
Load Assist
Cat Grade Control with Load Assist
HID work lights
Cooling, high ambient HRC
Cooling, low ambient HRC
Cooling, high ambient LRC
Cooling, low ambient LRC
Camera arrangement - WAVS
Steering lock - external
Cab beacon
Air horn
Air horn and beacon
Fender, scraper
Guard, overflow
Wiring group
Year of manufacture plate
Film arrangement - U.S. (ANSI)
Film arrangement - International (ISO)
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