621K Wheel Tractor-Scraper

621K Wheel Tractor-Scraper

360° Exterior View

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 ...
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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
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 ACERT 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 ACERT™
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

Standard Equipment:

Optional Equipment:

    Steering Arrangements
    • Secondary Steering Arrangement
    Integrated Technologies
    • Sequence Assist Arrangement
    • Load Assist
    • Cat Grade Control with Load Assist
    Other Attachments
    • Camera arrangement - WAVS
    • Steering lock - external
    • Cab beacon
    • Air horn
    • Air horn and beacon
    • Fender, scraper
    • Guard, overflow
    • Wiring group
    • Year of manufacture plate
    Work Light Attachments
    • HID work lights
    Ambient Capability Arrangements
    • Cooling, high ambient HRC
    • Cooling, low ambient HRC
    • Cooling, high ambient LRC
    • Cooling, low ambient LRC
    Service Instructions
    • Film arrangement - U.S. (ANSI)
    • Film arrangement - International (ISO)