 
						Caterpillar 623K Wheel Tractor-Scraper
THE RUNDOWN
BE MORE PRODUCTIVE
WORK IN COMFORT
DESIGNED FOR SAFETY
EASY TO OPERATE
INTEGRATED CAT TECHNOLOGIES
EXECUTE EFFICIENCY
General
| Top Speed - Loaded | 33.5mile/h | 
| Number of Flights | 15 | 
| Operating Weight - Empty | 88061.0lb | 
| 180° Curb-to-Curb Turning Width | 38.71ft | 
| Overall Shipping Height | 12.37ft | 
| Overall Length | 45.18ft | 
| Maximum Depth of Spread | 18.3in | 
| Fuel Tank Refill Capacity - Scraper | 201.0gal (US) | 
| Scraper Capacity - Struck | 18.8yd³ | 
| Scraper Capacity - Heaped | 23.0yd³ | 
| Rated Load | 25 038 kg (55,200 lb); 25.1 tonnes (27.6 tons) | 
| Tires - Tractor Drive | 33.25R29**E3 | 
| Width - Cut | 10.3ft | 
| Elevator Flight Spacing | 20.0in | 
| Overall Width | 11.71ft | 
| Maximum Depth of Cut | 10.3in | 
| Maximum Floor Opening | 4.4ft | 
| Tires - Scraper | 33.25R29**E3 | 
Engine
| Flywheel Power - Tractor/Scraper | 304 kW (407 hp) | 
| Rated Engine RPM | 2000.0r/min | 
| Engine Model | Cat C13 | 
| Flywheel Power - Tractor | 407.0hp | 
| Note | C13 engine emits equivalent to U.S. EPA Tier 2/EU Stage II or U.S. EPA Tier 3/EU Stage III. | 
Transmission
| Top Speed - Loaded | 33.5mile/h | 
Scraper Bowl
| Scraper Capacity - Heaped | 23.0yd³ | 
Service Refill Capacities
| Fuel Tank | 216.09gal (US) | 
| Crankcase | 8.08gal (US) | 
| Cooling System | 11.89gal (US) | 
| Hydraulic System | 21.926gal (US) | 
| Transmission System | 24.76gal (US) | 
Dimensions
| Height - Overall Shipping | 158.9in | 
| Length - Overall Machine | 542.0in | 
| Width - Overall Machine | 141.1in | 
| Height - Top of Cab | 142.6in | 
| Height - Scraper Blade Maximum | 20.5in | 
| Width - Tractor | 133.1in | 
| Width - Inside of Bowl | 120.0in | 
| Width - Outside Rear Tires | 128.9in | 
| Front of Tractor to Front Axle | 122.8in | 
| Wheel Base | 329.5in | 
| Rear Axle - Rear of Machine | 89.7in | 
| Ground Clearance - Tractor | 21.9in | 
| Width - Overall Machine - Ladder Down | 149.2in | 
| Axle to Vertical Hitch Pin | 17.0in | 
| Width - Rear Tire Centers | 90.2in | 
| Height - Top of Elevator | 148.3in | 
Cab
| ROPS/FOPS | Meets ISO standards | 
| Exterior Sound Level | The exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A). | 
Safety Criteria Compliance Standards
| Reverse Alarm | ISO 9533:2010 | 
| Steering System | ISO 5010:2007 | 
| Rollover Protection Structure (ROPS) | ISO 3471:2008 for up to 17 084 kg (37,664 lb) | 
| Seat Belt | SAE J386:JUN1985 | 
| Falling Object Protective Structure (FOPS) | ISO 3449:2005 Level II | 
| Brakes | ISO 3450:2011 | 
Travel Speeds - Runout
| Transmission Gear - Reverse | 5.7mile/h | 
| Transmission Gear - Sixth | 18.4mile/h | 
| Transmission Gear - Third | 7.5mile/h | 
| Transmission Gear - Second | 5.5mile/h | 
| Transmission Gear - Fifth | 13.6mile/h | 
| Transmission Gear - Seventh | 24.8mile/h | 
| Transmission Gear - First | 3.1mile/h | 
| Transmission Gear - Eighth | 33.5mile/h | 
| Transmission Gear - Fourth | 10.1mile/h | 
Implement Cycle Times
| Ejector Retract | 9.7s | 
| Bowl Raise | 3.0s | 
| Bowl Lower | 3.5s | 
| Ejector Extend | 6.45s | 
 
																					