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Caterpillar - 621K Wheel Tractor-Scraper

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.

Rent this Equipment
Brochure / Documentation - C10129953

Maximum Depth of Cut 12.4 in
Maximum Depth of Spread 21.3 in
180° Curb-to-Curb Turning Width 38.71 ft
Scraper Capacity - Struck 17.1 yd³
Tires - Scraper 33.25R29**E3
Overall Width 11.71 ft
Overall Shipping Height 13.22 ft
Width - Cut 10.3 ft
Tires: Tractor Drive 33.25R29**E3
Top Speed - Loaded 33.5 mile/h
Fuel Tank Refill Capacity - Scraper 201.0 gal (US)
Scraper Capacity - Heaped 24.0 yd³
Rated Load 26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons)
Rated Engine RPM: Tractor 2000.0 RPM
Engine Model: Tractor Cat C13
Flywheel Power: Tractor 407.0 hp
Note Cat C13 engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards.
Flywheel Power - Tractor/Scraper 304 kW (407 hp)
Scraper Capacity: Heaped 24.0 yd3
Top Speed (Loaded) 33.5 mph
Hydraulic System 21.926 gal
Cooling System 11.89 gal
Fuel Tank 216.09 gal
Crankcase 8.08 gal
Diesel Exhaust Fluid 8.057 gal (US)
Transmission System 24.76 gal (US)
Width - Overall Machine 141.1 in
Width of Tractor 133.1 in
Width - inside of bowl 120.0 in
Width – Outside Rear Tires 128.9 in
Height - overall shipping 158.6 in
Height - Top of Cab 142.2 in
Ground Clearance - Tractor 21.9 in
Front of Tractor to Front Axle 122.8 in
Axle to Vertical Hitch Pin 21.3 in
Height - Scraper Blade Maximum 20.5 in
Wheelbase 314.9 ft
Rear Axle - Rear of Machine 114.1 in
Length – Maximum (Push-Pull) 613.2 in
Length - Overall Machine - Standard 551.8 in
Width - Rear Tire Centers 90.2 in
Width – Overall Machine – Ladder Down 149.2 in
Overall Length 45.9 ft
Operating Weight (Empty) 79787.0 lb
Operating Weight (Empty) 80630.0 lb
Overall Length (With Bail Down) 51.1 ft
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).
Brakes ISO 3450:1996
Seat Belt SAE J386:JUN1985
Steering System ISO 5010:2007
Reverse Alarm ISO 9533:2010
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
Transmission Gear - Sixth 18.4 mile/h
Transmission Gear - Fifth 13.6 mile/h
Transmission Gear - Reverse 5.7 mile/h
Transmission Gear - Second 5.5 mile/h
Transmission Gear - Third 7.5 mile/h
Transmission Gear - First 3.1 mile/h
Transmission Gear - Eighth 33.5 mile/h
Transmission Gear - Fourth 10.1 mile/h
Transmission Gear - Seventh 24.8 mile/h
Bail Lower 3.2 s
Bail Raise 1.8 s
Apron Lower 3.8 s
Apron Raise 2.95 s
Ejector Extend 5.2 s
Ejector Retract 6.7 s
Bowl Raise 3.0 s
Bowl Lower 3.5 s