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621K Wheel Tractor-Scraper

621K Wheel Tractor-Scraper

At a Glance

Flywheel Power - Tractor/Scraper
304 kW (407 hp)
Scraper Capacity - Heaped
24 yd³
Top Speed - Loaded
33.5 mile/h
Width - Overall Machine
141.1 in
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Overview

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 lowest cost per ton.

Tractor Engine

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Flywheel Power - Tractor/Scraper 304 kW (407 hp)

Scraper Bowl

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Scraper Capacity - Heaped 24yd³

Transmission

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Top Speed - Loaded 33.5mile/h

Dimensions

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

Engine

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Engine Model - Tractor Cat C13 ACERT™
Rated Engine RPM - Tractor 2000r/min
Flywheel Power - Tractor 407HP
Note Cat C13 ACERT engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards.

Push-Pull

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

Non Push-Pull

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Operating Weight - Empty 79787lb
Overall Length 45.9ft

General

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180° Curb-to-Curb Turning Width 38.71ft
Fuel Tank Refill Capacity - Scraper 201gal (US)
Maximum Depth of Cut 12.4in
Maximum Depth of Spread 21.3in
Overall Shipping Height 13.22ft
Overall Width 11.71ft
Rated Load 26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons)
Scraper Capacity - Heaped 24yd³
Scraper Capacity - Struck 17.1yd³
Tires - Scraper 33.25R29**E3
Tires - Tractor Drive 33.25R29**E3
Top Speed - Loaded 33.5mile/h
Width - Cut 10.3ft

Service Refill Capacities

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

Cab

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Exterior Sound Level The exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A).
ROPS/FOPS Meets SAE and ISO standards

Safety Criteria Compliance Standards

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Brakes ISO 3450:1996
Falling Object Protective Structure (FOPS) ISO 3449:2005 Level II
Reverse Alarm ISO 9533:2010
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

Travel Speeds - Runout

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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

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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