Category : Scrapers ➔ Manufacturer : Caterpillar ➔ Model : 623K ➔
The Caterpillar 623K is a motor scraper in Caterpillar's scraper lineup, designed for earthmoving, haul, and grading applications in large-scale construction and site preparation. It features a twin-engine, open-bowl scraper configuration used to load, carry, and spread material efficiently over medium to long distances. The 623K is commonly used in road building, mass excavation, land development, and mining support work. Built for high production in loose to medium-density soils, it combines traction, bowl capacity, and operator-controlled loading and dumping functions. The model is part of Caterpillar's K Series scraper range and is recognized for heavy-duty earthmoving performance.
Cab
Caterpillar 623K Scraper Cab specifications
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
Dimensions
Caterpillar 623K Scraper Dimensions specifications
Axle To Vertical Hitch Pin
17.00 in (43.18 cm)
Front Of Tractor To Front Axle
122.80 in (311.91 cm)
Ground Clearance - Tractor
21.90 in (55.63 cm)
Height
12.25 ft (3.73 m)
Height - Overall Shipping
158.90 in (403.61 cm)
Height - Scraper Blade Maximum
20.50 in (52.07 cm)
Height - Top Of Cab
11.89 ft (3.62 m)
Height - Top Of Elevator
148.31 in (376.71 cm)
Length
45.08 ft (13.74 m)
Length - Overall Machine
542.00 in (1,376.68 cm)
Rear Axle - Rear Of Machine
89.70 in (227.84 cm)
Weight
88,061.00 lbs (39,943.85 kg)
Wheel Base
27.46 ft (8.37 m)
Width
11.58 ft (3.53 m)
Width - Inside Of Bowl
120.00 in (304.80 cm)
Width - Outside Rear Tires
128.90 in (327.41 cm)
Width - Overall Machine
141.10 in (358.39 cm)
Width - Overall Machine - Ladder Down
149.20 in (378.97 cm)
Width - Rear Tire Centers
90.20 in (229.11 cm)
Width - Tractor
133.10 in (338.07 cm)
Engine
Caterpillar 623K Scraper Engine specifications
Engine Model
Cat C13 ACERT
Flywheel Power - Tractor
407.00 hp (303.50 kw)
Flywheel Power - Tractor/Scraper
304 kW (407 hp)
Note
Cat C13 ACERT engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards.
Rated Engine Rpm
2000 rpm
General
Caterpillar 623K Scraper General specifications
180 Degrees Curb-To-Curb Turning Width
38.71 ft (11.80 m)
Elevator Flight Spacing
20.00 in (50.80 cm)
Fuel Tank Refill Capacity - Scraper
201.00 gal (760.79 l)
Maximum Depth Of Cut
10.30 in (26.16 cm)
Maximum Depth Of Spread
18.30 in (46.48 cm)
Maximum Floor Opening
4.41 ft (1.34 m)
Number Of Flights
15
Operating Weight - Empty
88,061.00 lbs (39,943.85 kg)
Overall Length
45.18 ft (13.77 m)
Overall Shipping Height
12.37 ft (3.77 m)
Overall Width
11.71 ft (3.57 m)
Rated Load
25 038 kg (55,200 lb); 25.1 tonnes (27.6 tons)
Scraper Capacity - Heaped
23 cu yd
Scraper Capacity - Struck
18.8 cu yd
Tires - Scraper
33.25R29**E3
Tires - Tractor Drive
33.25R29**E3
Top Speed - Loaded
33.50 mph (53.91 kph)
Width - Cut
10.30 ft (3.14 m)
Implement Cycle Times
Caterpillar 623K Scraper Implement Cycle Times specifications
Bowl Lower
3.5 s
Bowl Raise
3 s
Ejector Extend
6.45 s
Ejector Retract
9.7 s
Safety Criteria Compliance Standards
Caterpillar 623K Scraper Safety Criteria Compliance Standards specifications
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
Scraper Bowl
Caterpillar 623K Scraper Scraper Bowl specifications
Scraper Capacity - Heaped
23 cu yd
Service Refill Capacities
Caterpillar 623K Scraper Service Refill Capacities specifications
Cooling System
11.90 gal (45.04 l)
Crankcase
8.10 gal (30.66 l)
Diesel Exhaust Fluid
8.10 gal (30.66 l)
Fuel Tank
216.10 gal (817.94 l)
Hydraulic System
22.00 gal (83.27 l)
Transmission System
24.80 gal (93.87 l)
Transmission
Caterpillar 623K Scraper Transmission specifications
Top Speed - Loaded
33.50 mph (53.91 kph)
Travel Speeds - Runout
Caterpillar 623K Scraper Travel Speeds - Runout specifications
Transmission Gear - Eighth
33.50 mph (53.91 kph)
Transmission Gear - Fifth
13.60 mph (21.89 kph)
Transmission Gear - First
3.10 mph (4.99 kph)
Transmission Gear - Fourth
10.10 mph (16.25 kph)
Transmission Gear - Reverse
5.70 mph (9.17 kph)
Transmission Gear - Second
5.50 mph (8.85 kph)
Transmission Gear - Seventh
24.80 mph (39.91 kph)
Transmission Gear - Sixth
18.40 mph (29.61 kph)
Transmission Gear - Third
7.50 mph (12.07 kph)
