Caterpillar 621F Scraper

Bowl

Heaped Capacity20.1 cu yds (15 m)
Max Depth of Cut13.2 in (34 cm)
Rated Payload47994.7 lbs (21,770 kg)
Struck Capacity14 cu yds (11 m)
Width of Cut10 ft (3 m)

Dimensions

Axle to Vertical Hitch Pin17 in (43 cm)
Front of Tractor to Front Axle125 in (318 cm)
Ground Clearance - Tractor22 in (56 cm)
Height - Overall Shipping132 in (335 cm)
Height - Scraper Blade Maximum21 in (53 cm)
Height - Top of Cab11.1 ft (3 m)
Length - Overall Machine507 in (1,288 cm)
Overall Height12.2 ft (4 m)
Overall Length42.5 ft (13 m)
Overall Width11.4 ft (3 m)
Rear Axle - Rear of Machine85 in (216 cm)
Wheel Base25.4 ft (8 m)
Wheelbase25.4 ft (8 m)
Width - Inside of Bowl116 in (295 cm)
Width - Outside Rear Tires120 in (305 cm)
Width - Overall Machine136 in (345 cm)
Width - Rear Tire Center Lines87 in (221 cm)
Width - Tractor117 in (297 cm)

Engine

Tractor Engine3406C

Hydraulic System

Apron Cylinder Bore7.3 in (19 cm)
Apron Cylinder Stroke24 in (61 cm)
Bowl Cylinder Bore6 in (15 cm)
Bowl Cylinder Stroke32 in (81 cm)
Cushion Hitch Circuit9.7 gal/min (37 l/min)
Ejector Cylinder Bore6.5 in (17 cm)
Ejector Cylinder Stroke61 in (155 cm)
Relief Valve - Implement Circuit2150 psi
Relief Valve - Steering Circuit2250 psi
Scraper Circuit65.5 gal/min (248 l/min)
Secondary Steering Circuit37 gal/min (140 l/min)
Steering Circuit52 gal/min (197 l/min)

Operating Specifications

Fuel Capacity215.1 gal (814 l)

Scraper Bowl

Apron Closure Force24075 lbs (10,920 kg)
Apron Opening70.1 in (178 cm)
Capacity - Struck14 cu yds (11 m)
Cutting Edge Thickness1.2 in (3 cm)
Depth of Cut - Maximum13.2 in (34 cm)
Depth of Spread - Maximum70.1 in (178 cm)
Ground Clearance - Maximum20.5 in (52 cm)
Hyd. Penetration Force - 621G33840 lbs (15,350 kg)
Rated Load48000 lbs (21,773 kg)
Scraper Capacity - Heaped30 cu yds (23 m)
Width - Cut - To Router Bits119 in (302 cm)

Service Refill Capacities - Tractor

Cooling System22 gal (83 l)
Crankcase9.5 gal (36 l)
Differential43 gal (163 l)
Final Drive - Each5 gal (19 l)
Hydraulic Reservoir37 gal (140 l)
Transmission19 gal (72 l)
Wheel Coolant - Each12 gal (45 l)

Steering System

Ground-Driven Secondary Steering System39.9 gal/min (151 l/min)
Hydraulic Output52 gal/min (197 l/min)
Steering Angle - Left85 °
Steering Angle - Right90 °
Width - 180 degrees Turn35.8 ft (11 m)

Tractor Engine

Bore5.4 in (14 cm)
Caterpillar Net Power333 hp (248 kw)
Displacement893 cu in (0 m)
EEC 80/1269330 hp (246 kw)
Gross Power330 hp (246 kw)
ISO 9249330 hp (246 kw)
Model3406CTA
Net Power - Gears 1-2330 hp (246 kw)
SAE J1349327 hp (244 kw)
Stroke6.5 in (17 cm)

Transmission

1 Forward3.1 mph (5 kph)
2 Forward5.6 mph (9 kph)
3 Forward7.1 mph (11 kph)
4 Forward9.6 mph (15 kph)
5 Forward12.9 mph (21 kph)
6 Forward17.5 mph (28 kph)
7 Forward23.6 mph (38 kph)
8 Forward31.9 mph (51 kph)
Max Speed Forward31.7 mph (51 kph)
Reverse5.7 mph (9 kph)

Weights

Operating Weight70715 lbs (32,076 kg)
Total Operating - empty70746.4 lbs (32,090 kg)

Weights - Standard, Tandem

Front Axle48109 lbs (21,822 kg)
Front Axle Weight - Loaded62915 lbs (28,538 kg)
Rear Axle22638 lbs (10,269 kg)
Rear Axle - Weight - Loaded55792 lbs (25,307 kg)
Scraper Shipping21715 lbs (9,850 kg)
Total Operating - Empty70715 lbs (32,076 kg)
Total Operating - Loaded118707 lbs (53,845 kg)
Total Shipping69658 lbs (31,597 kg)
Tractor Shipping47943 lbs (21,747 kg)

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