- Category: Scrapers ➔
- Manufacturer: Caterpillar ➔
- Model: 637D ➔
The Caterpillar 637D is a twin-engine wheel tractor-scraper used for high-volume earthmoving, haul, and site preparation work. As part of Caterpillar's scraper lineup, the 637D is designed to load, carry, and spread material efficiently over medium to long distances. It typically features a bowl, apron, ejector, and rear push-pull capability depending on configuration. The machine is used in road construction, mining support, land development, and large-scale grading projects. The 637D is known for its heavy-duty frame, large-capacity bowl, and serviceability. It remains a recognized model in the Caterpillar scraper category for production earthmoving applications.
Bowl
| Heaped Capacity | 31 cu yd (24 cu m)
|
| Max Depth of Cut | 19 in (49 cm)
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| Rated Payload | 74,957 lbs (34,000 kg)
|
| Struck Capacity | 21 cu yd (16 cu m)
|
| Width of Cut | 12 ft (4 m)
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Dimensions
| Overall Height | 14 ft (4 m)
|
| Overall Length | 49 ft (15 m)
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| Overall Width | 13 ft (4 m)
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| Wheelbase | 29 ft (9 m)
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Operating Specifications
| Fuel Capacity | 371 gal (1,403 l)
|
| Tire Size | 33.25-35 38PR (E-3)
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Scraper Engine
| Displacement | 641 cu in (10,501 cu cm)
|
| Make | Caterpillar
|
| Net Power | 255 hp (190 kw)
|
| Power Measured @ | 2200 rpm
|
Tractor Engine
| Displacement | 1,099 cu in (18,001 cu cm)
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| Make | Caterpillar
|
| Net Power | 450 hp (336 kw)
|
| Power Measured @ | 2000 rpm
|
Transmission
| Max Speed Forward | 32 mph (51 kph)
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| Number of Forward Gears | 8
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Weights
| Front Axel - loaded | 90,566 lbs (41,080 kg)
|
| Front Axle - empty | 64,768 lbs (29,378 kg)
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| Rear Axle - empty | 41,407 lbs (18,782 kg)
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| Rear Axle - loaded | 90,566 lbs (41,080 kg)
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| Total Operating - empty | 106,175 lbs (48,160 kg)
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| Total Operating - Loaded | 181,132 lbs (82,160 kg)
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