Tractor Engine
| Flywheel Power - Tractor/Scraper | 304 kW (407 hp) 304 kW (407 hp) |
Key Specs
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.
Ergonomic controls and a newly redesigned cab interior provide a more comfortable and efficient working environment all day long
Improvements in fuel efficiency and responsive APECS transmission controls deliver more productivity in most applications
New safety features help operators be more productive and work more efficiently all day long
| Flywheel Power - Tractor/Scraper | 304 kW (407 hp) 304 kW (407 hp) |
| Scraper Capacity - Heaped | 24 yd³ 18.4 m³ |
| Overall Width | 11.8 ft 3.57 m |
| Overall Shipping Height | 13.22 ft 4.03 m |
| Scraper Capacity - Struck | 17.1 yd³ 13 m³ |
| Scraper Capacity - Heaped | 24 yd³ 18.4 m³ |
| Rated Load | 26 127 kg (57,600 lb); 26.19 tonnes (28.81 tons) 26 127 kg (57,600 lb); 26.19 tonnes (28.81 tons) |
| Width - Cut | 10.4 ft 3.14 m |
| Maximum Depth of Cut | 12.4 in 315 mm |
| Maximum Depth of Spread | 21.3 in 540 mm |
| Top Speed - Loaded | 33.5 mile/h 53.9 km/h |
| 180° Curb-to-Curb Turning Width | 38.71 ft 11.8 m |
| Tires - Scraper | 33.25R29**E3 33.25R29**E3 |
| Tires - Tractor Drive | 33.25R29**E3 33.25R29**E3 |
| Fuel Tank Refill Capacity - Scraper | 201 gal (US) 763 l |
| Operating Weight - Empty | 79774 lb 36385 kg |
| Overall Length | 45.10 ft 14.02 m |
| Operating Weight - Empty | 83138 lb 37711 kg |
| Overall Length - With Bail Down | 51.1 ft 15.58 m |
| Width - Overall Machine | 141.1 in 3585 mm |
| Width - Tractor | 133.1 in 3381 mm |
| Width - Inside of Bowl | 120 in 3048 mm |
| Width - Outside Rear Tires | 128.9 in 3275 mm |
| Height - Overall Shipping | 158.6 in 4029 mm |
| Height - Top of Cab | 142.2 in 3612 mm |
| Ground Clearance - Tractor | 21.9 in 557 mm |
| Front of Tractor to Front Axle | 122.8 in 3119 mm |
| Axle to Vertical Hitch Pin | 21.3 in 540 mm |
| Height - Scraper Blade Maximum | 21.3 in 540 mm |
| Wheel Base | 314.9 in 7998 mm |
| Rear Axle - Rear of Machine | 114.1 in 2898 mm |
| Length - Maximum (Push-Pull) | 613.2 in 15576 mm |
| Width - Overall Machine - Ladder Down | 149.2 in 3790 mm |
| Length - Overall Machine - Standard | 551.8 in 14015 mm |
| Width - Rear Tire Centers | 90.2 in 2290 mm |
| 1 Forward | 3.1 mile/h 5 km/h |
| 2 Forward | 5.5 mile/h 8.9 km/h |
| 3 Forward | 7.5 mile/h 12.1 km/h |
| 4 Forward | 10.1 mile/h 16.3 km/h |
| 5 Forward | 13.6 mile/h 21.9 km/h |
| 6 Forward | 18.4 mile/h 29.6 km/h |
| 7 Forward | 24.8 mile/h 39.9 km/h |
| 8 Forward | 33.5 mile/h 53.9 km/h |
| Reverse | 5.7 mile/h 9.2 km/h |
| Top Speed - Loaded | 33.5 mile/h 53.9 km/h |
| Final Drive - Each | 5 Gal 19 l |
| Windshield Washer | 1.3 Gal 5 l |
| Cooling System - Scraper | 8.7 Gal 33 l |
| Crankcase | 9.7 gal (US) 37 l |
| Transmission System | 25.5 gal (US) 97 l |
| Cooling System | 11 gal (US) 42 l |
| Diesel Exhaust Fluid (DEF) | 8.1 Gal 30.5 l |
| Fuel Tank | 216.01 gal (US) 818 l |
| Hydraulic System | 21.926 gal (US) 83 l |
| Rated Engine RPM - Tractor | 2000 r/min 2000 r/min |
| Engine Model - Tractor | Cat® C13 Cat® C13 |
| Flywheel Power - Tractor | 407 hp 304 kW |
| Note | Meets U.S. EPA Tier 4 Final/EU Stage V emission standards, or noncertified and equivalent to U.S. EPA Tier 2, or noncertified and equivalent to U.S. EPA Tier 3/EU Stage IIIA. Meets U.S. EPA Tier 4 Final/EU Stage V emission standards, or noncertified and equivalent to U.S. EPA Tier 2, or noncertified and equivalent to U.S. EPA Tier 3/EU Stage IIIA. |
| ROPS/FOPS | Meets ISO standards Meets ISO standards |
| Exterior Sound Level | The exterior sound power level for the standard machine (ISO 6395:2008) is 114 dB(A). The exterior sound power level for the standard machine (ISO 6395:2008) is 114 dB(A). |
| Reverse Alarm | ISO 9533:2010 ISO 9533:2010 |
| Falling Object Protective Structure (FOPS) | ISO 3449:2005 Level II ISO 3449:2005 Level II |
| Steering System | ISO 5010:2007 ISO 5010:2007 |
| Rollover Protection Structure (ROPS) | ISO 3471:2008 for up to 17 084 kg (37,664 lb) ISO 3471:2008 for up to 17 084 kg (37,664 lb) |
| Seat Belt | SAE J386:JUN1985 SAE J386:JUN1985 |
| Brakes | ISO 3450:2011 ISO 3450:2011 |
| Transmission Gear - Reverse | 5.7 mile/h 9.2 km/h |
| Transmission Gear - Third | 7.5 mile/h 12.1 km/h |
| Transmission Gear - First | 3.1 mile/h 5 km/h |
| Transmission Gear - Seventh | 24.8 mile/h 39.9 km/h |
| Transmission Gear - Fourth | 10.1 mile/h 16.3 km/h |
| Transmission Gear - Sixth | 18.4 mile/h 29.6 km/h |
| Transmission Gear - Fifth | 13.6 mile/h 21.9 km/h |
| Transmission Gear - Second | 5.5 mile/h 8.9 km/h |
| Transmission Gear - Eighth | 33.5 mile/h 53.9 km/h |
| Bail Lower | 3.2 s 3.2 s |
| Apron Lower | 3.8 s 3.8 s |
| Bowl Lower | 3.5 s 3.5 s |
| Bail Raise | 1.8 s 1.8 s |
| Ejector Retract | 6.7 s 6.7 s |
| Ejector Extend | 5.2 s 5.2 s |
| Apron Raise | 3 s 3 s |
| Bowl Raise | 3.3 s 3.3 s |
Caterpillar product brochures and other informational documents are available for your growing business.
621 Wheel Tractor-Scraper
621 Wheel Tractor-Scraper
621 Wheel Tractor-Scraper
621 Wheel Tractor-Scraper
621 Wheel Tractor-Scraper
Wheel Tractor-Scraper K Series
Wheel Tractor-Scraper K Series Operator Testimonial