- Category: Scrapers ➔
- Manufacturer: Caterpillar ➔
- Model: 631E II ➔
The Caterpillar 631E II Scraper is a heavy-duty machine designed for efficient earth-moving and material handling tasks. With a heaped capacity of 31 cubic yards and a maximum depth of cut of 17.3 inches, this scraper is built to handle large volumes of materials with ease. The powerful 490 horsepower engine and advanced hydraulic system ensure smooth operation and high performance, while the sturdy construction and precise engineering make it a reliable choice for demanding job sites. Below are detailed specifications of the Caterpillar 631E II Scraper for those looking for a robust and versatile earthmoving equipment solution.
General Specifications
Bowl
| Heaped Capacity | 31 cu yd (24 cu m)
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| Max Depth of Cut | 17 in (44 cm)
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| Rated Payload | 75,001 lbs (34,020 kg)
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| Struck Capacity | 21 cu yd (16 cu m)
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| Width of Cut | 12 ft (4 m)
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Dimensions
| Front of Tractor to Front Axle | 132 in (336 cm)
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| Height - Overall Shipping | 169 in (429 cm)
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| Height - Scraper Blade Maximum | 22 in (55 cm)
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| Height - Top of Cab | 12 ft (4 m)
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| Length - Overall Machine | 573 in (1,456 cm)
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| Overall Height | 14 ft (4 m)
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| Overall Length | 48 ft (15 m)
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| Overall Width | 13 ft (4 m)
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| Rear Axle - Rear of Machine | 96 in (243 cm)
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| Wheel Base | 29 ft (9 m)
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| Wheelbase | 29 ft (9 m)
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| Width - Inside of Bowl | 134 in (340 cm)
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| Width - Outside Rear Tires | 143 in (363 cm)
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| Width - Overall Machine | 155 in (394 cm)
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| Width - Rear Tire Center Lines | 97 in (246 cm)
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| Width - Tractor | 137 in (348 cm)
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Engine
Hydraulic System
| Apron Cylinder Bore | 8 in (21 cm)
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| Apron Cylinder Stroke | 29 in (73 cm)
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| Bowl Cylinder Bore | 7 in (19 cm)
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| Bowl Cylinder Stroke | 34 in (87 cm)
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| Compensator Settings - Cushion Hitch Circuit | 2300.01 psi
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| Cushion Hitch Circuit | 10 gpm (38 lpm)
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| Ejector Cylinder Bore | 8 in (21 cm)
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| Ejector Cylinder Stroke | 74 in (188 cm)
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| Relief Valve - Implement Circuit | 2000 psi
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| Relief Valve - Steering Circuit | 1960 psi
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| Scraper Circuit | 95 gpm (360 lpm)
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| Secondary Steering Circuit | 77 gpm (291 lpm)
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| Steering Circuit | 105 gpm (397 lpm)
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Operating Specifications
| Fuel Capacity | 215 gal (814 l)
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Scraper Bowl
| Apron Closure Force | 38,250 lbs (17,350 kg)
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| Apron Opening | 79 in (201 cm)
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| Capacity - Struck | 21 cu yd (16 cu m)
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| Cutting Edge Thickness | 1 in (4 cm)
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| Depth of Cut - Maximum | 17 in (43 cm)
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| Depth of Spread - Maximum | 19 in (48 cm)
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| Ground Clearance - Maximum | 22 in (55 cm)
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| Hyd. Penetration Force - 621G | 57,375 lbs (26,025 kg)
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| Rated Load | 75,000 lbs (34,019 kg)
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| Scraper Capacity - Heaped | 31 cu yd (24 cu m)
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| Width - Cut - To Router Bits | 138 in (351 cm)
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Service Refill Capacities - Tractor
| Cooling System | 33 gal (125 l)
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| Crankcase | 12 gal (44 l)
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| Differential | 36 gal (136 l)
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| Final Drive - Each | 7 gal (26 l)
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| Hydraulic Reservoir | 50 gal (189 l)
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| Transmission | 33 gal (125 l)
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| Wheel Coolant - Each | 20 gal (74 l)
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Steering System
| Ground-Driven Secondary Steering System | 52 gpm (197 lpm)
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| Hydraulic Output | 96 gpm (364 lpm)
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| Steering Angle - Left | 85 degrees
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| Steering Angle - Right | 90 degrees
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| Width - 180 degrees Turn | 40 ft (12 m)
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Tractor Engine
| Bore | 5 in (14 cm)
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| Caterpillar Net Power | 490 hp (365 kw)
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| Displacement | 1,099 cu in (18,009 cu cm)
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| EEC 80/1269 | 490 hp (365 kw)
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| Gross Power | 490 hp (365 kw)
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| ISO 9249 | 490 hp (365 kw)
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| Net Power | 450 hp (336 kw)
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| SAE J1349 | 485 hp (362 kw)
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| Stroke | 6 in (15 cm)
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Transmission
| 1 Forward | 3 mph (5 kph)
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| 2 Forward | 5 mph (8 kph)
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| 3 Forward | 7 mph (12 kph)
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| 4 Forward | 10 mph (16 kph)
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| 5 Forward | 13 mph (22 kph)
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| 6 Forward | 18 mph (29 kph)
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| 7 Forward | 25 mph (39 kph)
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| 8 Forward | 33 mph (53 kph)
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| Max Speed Forward | 33 mph (53 kph)
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| Reverse | 6 mph (10 kph)
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Weights
| Operating Weight | 97,459 lbs (44,207 kg)
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| Total Operating - empty | 97,466 lbs (44,210 kg)
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Weights - Standard, Tandem
| Front Axle | 65,201 lbs (29,575 kg)
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| Front Axle Weight - Loaded | 91,576 lbs (41,538 kg)
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| Rear Axle | 32,259 lbs (14,632 kg)
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| Rear Axle - Weight - Loaded | 80,884 lbs (36,688 kg)
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| Scraper Shipping | 51,939 lbs (23,559 kg)
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| Total Operating - Empty | 97,459 lbs (44,207 kg)
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| Total Operating - Loaded | 172,459 lbs (78,226 kg)
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| Total Shipping | 96,182 lbs (43,627 kg)
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| Tractor Shipping | 44,243 lbs (20,068 kg)
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