Caterpillar 623G Scraper Specs

Category: Scrapers ➔
Manufacturer: Caterpillar ➔
Model: 623G ➔

The Caterpillar 623G is a self-loading wheel tractor-scraper used for earthmoving, hauling, and grading in construction, mining, and site development. As part of Caterpillar's scraper lineup, the 623G is designed to cut, load, transport, and spread material efficiently over medium to long distances. It typically features a twin-engine configuration, articulated steering, and a bowl and ejector system for controlled material handling. The 623G is commonly used in mass excavation, road building, and large-scale earthmoving operations where high production and cycle efficiency are required. Its design supports operation on varied terrain and in demanding jobsite conditions.

Bowl

Caterpillar 623G Scraper Bowl specifications
Max Depth of Cut	13.00 in (33.02 cm)
Rated Payload	55,115.00 lbs (24,999.77 kg)
Struck Capacity	18.00 cu yd (13.76 cu m)
Width of Cut	11.50 ft (3.51 m)

Dimensions

Caterpillar 623G Scraper Dimensions specifications
Front of Tractor to Front Axle	120.40 in (305.82 cm)
Ground Clearance - Tractor	21.80 in (55.37 cm)
Height - Overall Shipping	146.00 in (370.84 cm)
Height - Scraper Blade Maximum	15.00 in (38.10 cm)
Height - Top of Cab	11.30 ft (3.44 m)
Height to Top of Suspended Cab	11.30 ft (3.44 m)
Length - Overall Machine	520.00 in (1,320.80 cm)
Overall Height	12.20 ft (3.72 m)
Overall Length	43.40 ft (13.23 m)
Overall Width	11.70 ft (3.57 m)
Rear Axle - Rear of Machine	85.70 in (217.68 cm)
Rim Radius	17.00 in (43.18 cm)
Tractor Ground Clearance	1.90 ft (0.58 m)
Wheel Base	26.20 ft (7.99 m)
Wheelbase	26.20 ft (7.99 m)
Width - Inside of Bowl	116.00 in (294.64 cm)
Width - Outside Rear Tires	120.00 in (304.80 cm)
Width - Overall Machine	140.00 in (355.60 cm)
Width - Rear Tire Center Lines	85.80 in (217.93 cm)
Width - Tractor	123.20 in (312.93 cm)

Elevator

Caterpillar 623G Scraper Elevator specifications
Length - Flights	89.00 in (226.06 cm)
Length - Overall	146.90 in (373.13 cm)
Length of Flights	7.50 ft (2.29 m)
Number of Flights	15
Spacing of Flights	20.00 in (50.80 cm)
Width - Flight Face	8.50 in (21.59 cm)
Width of Flight Face	8.50 in (21.59 cm)

Engine

Caterpillar 623G Scraper Engine specifications
Bore	5.50 in (13.97 cm)
Displacement	928.00 cu in (15,207.23 cu cm)
Gross Power - Gears 1-2	359.00 hp (267.71 kw)
Net Power	330.00 hp (246.09 kw)
Net Power - Gears 1-2	330.00 hp (246.09 kw)
Net Power - Gears 3-8	365.00 hp (272.18 kw)
Stroke	6.50 in (16.51 cm)
Tractor Engine	Cat C15 ACERT

Hydraulic System

Caterpillar 623G Scraper Hydraulic System specifications
Bowl Cylinder Bore	6.00 in (15.24 cm)
Bowl Cylinder Stroke	20.00 in (50.80 cm)
Compensator Settings - Cushion Hitch Circuit	2175 psi
Compensator Settings - Elevator Circuit	5246 psi
Cushion Hitch Circuit	9.80 gpm (37.09 lpm)
Ejector Cylinder Bore	5.00 in (12.70 cm)
Ejector Cylinder Stroke	48.00 in (121.92 cm)
Floor Cylinder Bore	6.00 in (15.24 cm)
Floor Cylinder Stroke	53.30 in (135.38 cm)
Relief Valve - Implement Circuit	2510 psi
Relief Valve - Steering Circuit	2250 psi
Scraper Circuit	63.70 gpm (241.10 lpm)
Steering Circuit	55.00 gpm (208.18 lpm)
Supplemental Steering Circuit	39.90 gpm (151.02 lpm)

Operating Specifications

Caterpillar 623G Scraper Operating Specifications specifications
Alternator Supplied Amperage	75 amps
Cooling System Fluid Capacity	28.00 gal (105.98 l)
Differential Fluid Capacity	38.00 gal (143.83 l)
Engine Oil Capacity	9.50 gal (35.96 l)
Engine Oil Fluid Capacity	9.50 gal (35.96 l)
Fuel Capacity	160.00 gal (605.60 l)
Hydraulic System Fluid Capacity	37.00 gal (140.05 l)
Operating Voltage	24 volts
Tire Size	33.25-R29
Transmission Fluid Capacity	19.00 gal (71.92 l)
Wheel Coolant Fluid Capacity - each	12.00 gal (45.42 l)

Scraper Bowl

Caterpillar 623G Scraper Scraper Bowl specifications
Capacity - Struck	18.00 cu yd (13.76 cu m)
Capacity Heaped	23.00 cu yd (17.58 cu m)
Cutting Edge Thickness	1.20 in (3.05 cm)
Depth of Cut - Maximum	13.00 in (33.02 cm)
Depth of Spread - Maximum	15.00 in (38.10 cm)
Ground Clearance - Maximum	15.20 in (38.61 cm)
Hydraulic Penetration Force	33,750.00 lbs (15,308.76 kg)
Rated Load	55,115.00 lbs (24,999.77 kg)
Width - Cut - To Router Bits	138.00 in (350.52 cm)

Service Refill Capacities

Caterpillar 623G Scraper Service Refill Capacities specifications
Cooling System	28.00 gal (105.98 l)
Crankcase	9.50 gal (35.96 l)
Differential	38.00 gal (143.83 l)
Final Drive - Each	5.00 gal (18.93 l)
Fuel Tank	160.00 gal (605.60 l)
Hydraulic Reservoir	37.00 gal (140.05 l)
Transmission	19.00 gal (71.92 l)
Wheel Coolant - Each	12.00 gal (45.42 l)

Steering System

Caterpillar 623G Scraper Steering System specifications
Hydraulic Output	55.00 gpm (208.18 lpm)
Steering Angle - Left	85 degrees
Steering Angle - Right	90 degrees
Width - 180 degrees Turn	35.90 ft (10.94 m)

Tractor Engine

Caterpillar 623G Scraper Tractor Engine specifications
Displacement	928.00 cu in (15,207.23 cu cm)
Make	Caterpillar

Transmission

Caterpillar 623G Scraper Transmission specifications
1 Forward	3.10 mph (4.99 kph)
2 Forward	4.70 mph (7.56 kph)
3 Forward	6.80 mph (10.94 kph)
4 Forward	9.20 mph (14.81 kph)
5 Forward	12.40 mph (19.96 kph)
6 Forward	16.70 mph (26.88 kph)
7 Forward	22.60 mph (36.37 kph)
8 Forward	32.00 mph (51.50 kph)
Max Speed Forward	32.00 mph (51.50 kph)
Max Speed Reverse	5.70 mph (9.17 kph)
Number of Forward Gears	8
Number of Reverse Gears	1
Reverse	5.70 mph (9.17 kph)
Transmission Type	8-speed automatic Powershift with Electronic Control
Travel Speed - Maximum	32.00 mph (51.50 kph)

Weights

Caterpillar 623G Scraper Weights specifications
Front Axel - loaded	68,823.00 lbs (31,217.63 kg)
Front Axle	52,819.00 lbs (23,958.33 kg)
Front Axle - empty	52,819.00 lbs (23,958.33 kg)
Front Axle Weight - Loaded	68,823.00 lbs (31,217.63 kg)
Rear Axle	29,711.00 lbs (13,476.70 kg)
Rear Axle - empty	29,711.00 lbs (13,476.70 kg)
Rear Axle - loaded	68,823.00 lbs (31,217.63 kg)
Rear Axle - Weight - Loaded	68,823.00 lbs (31,217.63 kg)
Scraper Shipping	28,419.00 lbs (12,890.66 kg)
Total Operating - empty	82,530.00 lbs (37,435.02 kg)
Total Operating - Loaded	137,646.00 lbs (62,435.25 kg)
Total Shipping	81,196.00 lbs (36,829.93 kg)
Tractor Shipping	52,778.00 lbs (23,939.73 kg)

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