- Category: Scrapers ➔
- Manufacturer: Caterpillar ➔
- Model: 631G ➔
The Caterpillar 631G is a high-performance scraper designed for earthmoving and construction applications. This heavy equipment features a powerful engine, advanced hydraulics, and a durable frame to efficiently load, haul, and dump large volumes of soil and materials. The 631G scraper offers enhanced productivity with improved fuel efficiency and operator comfort. It is equipped with a spacious cab, precise controls, and robust transmission systems to handle demanding job sites. Commonly used in road building, mining, and large-scale excavation projects, the Caterpillar 631G scraper delivers reliable performance and versatility for heavy-duty earthmoving tasks.
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 | 75,000 lbs (34,019 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
| Axle to Vertical Hitch Pin | 22 in (55 cm)
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| Height - Overall Shipping | 168 in (426 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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| Tractor Ground Clearance | 2 ft (1 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 (364 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 (18 cm)
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| Bowl Cylinder Stroke | 34 in (87 cm)
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| Compensator Settings - Cushion Hitch Circuit | 2320 psi
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| Cushion Hitch Circuit | 9 gpm (34 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 | 2030 psi
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| Relief Valve - Steering Circuit | 1987 psi
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| Scraper Circuit | 91 gpm (344 lpm)
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| Secondary Steering Circuit | 77 gpm (291 lpm)
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| Steering Circuit | 103 gpm (390 lpm)
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Operating Specifications
| Alternator Supplied Amperage | 75 amps
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| Cooling System Fluid Capacity | 32 gal (121 l)
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| Differential Fluid Capacity | 36 gal (136 l)
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| Engine Oil Fluid Capacity | 12 gal (44 l)
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| Fuel Capacity | 215 gal (814 l)
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| Hydraulic System Fluid Capacity | 50 gal (190 l)
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| Operating Voltage | 24 volts
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| Tire Size | 37.50-R35
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| Transmission Fluid Capacity | 33 gal (125 l)
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| Wheel Coolant Fluid Capacity - each | 20 gal (75 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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| Capacity Heaped | 34 cu yd (26 cu m)
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| Cutting Edge Thickness | 2 in (4 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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Service Refill Capacities - Scraper
| Wheel Coolant - Each | 20 gal (75 l)
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Service Refill Capacities - Tractor
| Cooling System | 32 gal (121 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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| Windshield Washer | 6 gal (23 l)
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Standards
| Brakes | Meets ISO 3450: 1996 standard
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Steering System
| Ground-Driven Secondary Steering System | 51 gpm (193 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
| 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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| Flywheel Power - Tractor/Scraper | 373 kW (500)
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| Gross Power | 515 hp (384 kw)
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| Gross Power - Gears 3-8 | 515 hp (384 kw)
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| ISO 9249 | 490 hp (365 kw)
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| Make | Caterpillar
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| Net Power - Gears 1-2 | 450 hp (336 kw)
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| Net Power - Gears 3-8 | 490 hp (365 kw)
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| Net Power - Tractor/Scraper | 336 kW (450)
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| SAE J1349 | 490 hp (365 kw)
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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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| Max Speed Reverse | 6 mph (10 kph)
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| Number of Forward Gears | 8
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| Number of Reverse Gears | 1
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| Reverse | 6 mph (10 kph)
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| Top Speed - Loaded | 33 mph (53 kph)
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| Transmission Type | 8-speed automatic Powershift with Electronic Control
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Weights
| Front Axel - loaded | 94,054 lbs (42,662 kg)
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| Front Axle - empty | 68,648 lbs (31,138 kg)
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| Operating Weight | 102,460 lbs (46,475 kg)
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| Rear Axle - empty | 33,812 lbs (15,337 kg)
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| Rear Axle - loaded | 83,406 lbs (37,832 kg)
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| Total Operating - empty | 102,460 lbs (46,475 kg)
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| Total Operating - Loaded | 177,460 lbs (80,495 kg)
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Weights - Standard, Tandem
| Front Axle | 68,648 lbs (31,138 kg)
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| Front Axle Weight - Loaded | 94,054 lbs (42,662 kg)
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| Rear Axle | 33,812 lbs (15,337 kg)
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| Rear Axle - Weight - Loaded | 83,406 lbs (37,832 kg)
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| Scraper Shipping | 54,004 lbs (24,496 kg)
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| Total Operating - Empty | 102,460 lbs (46,475 kg)
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| Total Operating - Loaded | 177,460 lbs (80,495 kg)
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| Total Shipping | 100,006 lbs (45,362 kg)
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| Tractor Shipping | 46,002 lbs (20,866 kg)
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