Caterpillar 621B Scraper Specs

Category: Scrapers ➔
Manufacturer: Caterpillar ➔
Model: 621B ➔

The Caterpillar 621B is a wheel tractor-scraper used in earthmoving, site preparation, and large-scale grading applications. As part of Caterpillar's scraper lineup, the 621B is designed to cut, load, haul, and spread material efficiently over medium to long distances. It is commonly used in highway construction, mining support, land development, and bulk excavation work. The machine typically features a tractor unit paired with a scraper bowl for material handling. The 621B is recognized for its role in high-production earthmoving operations and remains a reference model in Caterpillar scraper equipment history.

Bowl

Caterpillar 621B Scraper Bowl specifications
Heaped Capacity	20.1 cu yd
Max Depth Of Cut	13.40 in (34.04 cm)
Rated Payload	47,994.70 lbs (21,770.06 kg)
Struck Capacity	14 cu yd
Width Of Cut	10.00 ft (3.05 m)

Dimensions

Caterpillar 621B Scraper Dimensions specifications
Height	11.00 ft (3.35 m)
Length	41.00 ft (12.50 m)
Overall Height	11.91 ft (3.63 m)
Overall Length	41.67 ft (12.70 m)
Overall Width	11.32 ft (3.45 m)
Weight	67,000.00 lbs (30,390.73 kg)
Wheelbase	25.33 ft (7.72 m)
Width	11.00 ft (3.35 m)

Operational

Caterpillar 621B Scraper Operational specifications
Fuel Capacity	135.00 gal (510.98 l)
Tire Size	29.5-29 28PR (E-3)

Tractor Engine

Caterpillar 621B Scraper Tractor Engine specifications
Displacement	891.00 cu in (14,600.91 cu cm)
Make	Caterpillar
Net Power	330.00 hp (246.09 kw)
Power Measured @	1900 rpm

Transmission

Caterpillar 621B Scraper Transmission specifications
Max Speed Forward	29.90 mph (48.12 kph)
Number Of Forward Gears	8

Weights

Caterpillar 621B Scraper Weights specifications
Front Axel - Loaded	63,021.40 lbs (28,586.06 kg)
Front Axle - Empty	46612.4 %
Rear Axle - Empty	19977.2 %
Rear Axle - Loaded	51564 %
Total Operating - Empty	66,590.70 lbs (30,205.07 kg)
Total Operating - Loaded	114,585.30 lbs (51,975.08 kg)

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