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Caterpillar 621B Scraper


Heaped Capacity20.1 cu yds (15 m)
Max Depth of Cut13.4 in (34 cm)
Rated Payload47994.7 lbs (21,770 kg)
Struck Capacity14 cu yds (11 m)
Width of Cut10 ft (3 m)


Overall Height12 ft (4 m)
Overall Length41.7 ft (13 m)
Overall Width11.4 ft (3 m)
Wheelbase25.4 ft (8 m)

Operating Specifications

Fuel Capacity135 gal (511 l)
Tire Size29.5-29 28PR (E-3)

Tractor Engine

Displacement891 cu in (0 m)
Net Power330 hp (246 kw)
Power Measured @1900 rpm


Max Speed Forward29.9 mph (48 kph)
Number of Forward Gears8


Front Axel - loaded63021.4 lbs (28,586 kg)
Front Axle - empty46612.4 lbs (21,143 kg)
Rear Axle - empty19977.2 lbs (9,062 kg)
Rear Axle - loaded51564 lbs (23,389 kg)
Total Operating - empty66590.7 lbs (30,205 kg)
Total Operating - Loaded114585.3 lbs (51,976 kg)

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