621
- Scraper Capacity - Heaped
- 24 yd³ / 18.4 m³
- Top Speed - Loaded
- 33.5 mile/h / 53.9 km/h
- Width - Overall Machine
- 141.1 in / 3585 mm
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.
| General | |
|---|---|
| Overall Shipping Height | 13.22 ft / 4.03 m |
| Overall Width | 11.75 ft / 3.58 m |
| Scraper Capacity - Heaped | 24 yd³ / 18.4 m³ |
| Fuel Tank Refill Capacity - Scraper | 216.1 gal (US) / 818 l |
| Tires - Scraper | 33.25R29**E3 |
| Width - Cut | 10.3 ft / 3.14 m |
| Maximum Depth of Spread | 21.3 in / 540 mm |
| Top Speed - Loaded | 33.5 mile/h / 53.9 km/h |
| Rated Load | 26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons) |
| 180° Curb-to-Curb Turning Width | 38.71 ft / 11.8 m |
| Scraper Capacity - Struck | 17.1 yd³ / 13 m³ |
| Maximum Depth of Cut | 12.4 in / 315 mm |
| Tires - Tractor Drive | 33.25R29**E3 |
| Engine | |
|---|---|
| Engine Model - Tractor | Cat C13 |
| Flywheel Power - Tractor | 407 hp / 304 kW |
| Note | Cat C13 engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards. |
| Rated Engine RPM - Tractor | 2000 r/min |
| Tractor Engine | |
|---|---|
| Flywheel Power - Tractor/Scraper | 304 kW (407 hp) |
| Scraper Bowl | |
|---|---|
| Scraper Capacity - Heaped | 24 yd³ / 18.4 m³ |
| Transmission | |
|---|---|
| Top Speed - Loaded | 33.5 mile/h / 53.9 km/h |
| Service Refill Capacities | |
|---|---|
| Hydraulic System | 21.926 gal (US) / 83 l |
| Crankcase | 8.08 gal (US) / 30.58 l |
| Transmission System | 24.76 gal (US) / 93 l |
| Cooling System | 11.89 gal (US) / 45 l |
| Fuel Tank | 216.09 gal (US) / 818 l |
| Diesel Exhaust Fluid | 8.057 gal (US) / 30.5 l |
| Dimensions | |
|---|---|
| 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 | 20.5 in / 520 mm |
| Wheel Base | 314.9 in / 7998 mm |
| Rear Axle - Rear of Machine | 114.1 in / 2898 mm |
| Length - Overall Machine - Standard | 551.8 in / 14015 mm |
| Length - Maximum (Push-Pull) | 613.2 in / 15576 mm |
| Width - Overall Machine - Ladder Down | 149.2 in / 3790 mm |
| Width - Rear Tire Centers | 90.2 in / 2290 mm |
| Non Push-Pull | |
|---|---|
| Operating Weight - Empty | 79787 lb / 36185 kg |
| Overall Length | 45.9 ft / 14.02 m |
| Push-Pull | |
|---|---|
| Overall Length - With Bail Down | 51.1 ft / 15.58 m |
| Operating Weight - Empty | 80630 lb / 36567 kg |
| Cab | |
|---|---|
| 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 |
| Safety Criteria Compliance 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 |
| Travel Speeds - Runout | |
|---|---|
| Transmission Gear - Seventh | 24.8 mile/h / 39.9 km/h |
| Transmission Gear - Fifth | 13.6 mile/h / 21.9 km/h |
| Transmission Gear - First | 3.1 mile/h / 5 km/h |
| Transmission Gear - Sixth | 18.4 mile/h / 29.6 km/h |
| Transmission Gear - Second | 5.5 mile/h / 8.9 km/h |
| Transmission Gear - Third | 7.5 mile/h / 12.1 km/h |
| Transmission Gear - Fourth | 10.1 mile/h / 16.3 km/h |
| Transmission Gear - Eighth | 33.5 mile/h / 53.9 km/h |
| Transmission Gear - Reverse | 5.7 mile/h / 9.2 km/h |
| Implement Cycle Times | |
|---|---|
| Apron Raise | 2.95 s |
| Bowl Raise | 3 s |
| Ejector Retract | 6.7 s |
| Bowl Lower | 3.5 s |
| Apron Lower | 3.8 s |
| Ejector Extend | 5.2 s |
| Bail Lower | 3.2 s |
| Bail Raise | 1.8 s |
