- Category: Scrapers ➔
- Manufacturer: Caterpillar ➔
- Model: 637G ➔
The Caterpillar 637G is a wheel tractor-scraper in Caterpillar's scraper lineup, designed for high-production earthmoving, haul, and grading applications. It is commonly used in large-scale site preparation, road construction, mining, and bulk material handling. The 637G features a two-engine scraper configuration with a tractor and scraper bowl arrangement, providing efficient loading, hauling, and spreading of soil and aggregate. Known for its large-capacity bowl, articulated steering, and heavy-duty undercarriage, the model is built for moving substantial volumes of material over moderate distances. The Caterpillar 637G is part of Caterpillar's G-series scrapers used in demanding earthmoving operations.
Bowl
| Heaped Capacity | 31.00 cu yd (23.70 cu m)
|
| Max Depth of Cut | 17.20 in (43.69 cm)
|
| Rated Payload | 75,000.00 lbs (34,019.47 kg)
|
| Struck Capacity | 21.00 cu yd (16.06 cu m)
|
| Width of Cut | 11.60 ft (3.54 m)
|
Dimensions
| Axle to Vertical Hitch Pin | 21.60 in (54.86 cm)
|
| Bail Length - Maximum (Push-Pull) | 195.30 in (496.06 cm)
|
| Extended Push Block (Push-Pull) | 108.00 in (274.32 cm)
|
| Front of Tractor to Front Axle | 135.30 in (343.66 cm)
|
| Ground Clearance - Tractor | 26.20 in (66.55 cm)
|
| Height - Overall Shipping | 168.80 in (428.75 cm)
|
| Height - Scraper Blade Maximum | 21.50 in (54.61 cm)
|
| Height - Top of Cab | 12.20 ft (3.72 m)
|
| Length - Overall Machine | 573.40 in (1,456.44 cm)
|
| Overall Height | 14.10 ft (4.30 m)
|
| Overall Length | 47.80 ft (14.57 m)
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| Overall Width | 13.00 ft (3.96 m)
|
| Rear Axle - Rear of Machine | 95.80 in (243.33 cm)
|
| Tractor Ground Clearance | 2.20 ft (0.67 m)
|
| Wheel Base | 28.80 ft (8.78 m)
|
| Wheelbase | 28.80 ft (8.78 m)
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| Width - Inside of Bowl | 134.00 in (340.36 cm)
|
| Width - Outside Rear Tires | 143.20 in (363.73 cm)
|
| Width - Overall Machine | 155.00 in (393.70 cm)
|
| Width - Rear Tire Center Lines | 97.00 in (246.38 cm)
|
| Width - Tractor | 137.00 in (347.98 cm)
|
Engine
| Flywheel Power - Tractor/Scraper | 373 kw (500) / 211 kW (283)
|
| Scraper Engine | Cat C9 with ACERT Technology
|
| Tractor Engine | Cat C18 with ACERT Technology
|
Hydraulic System
| Apron Cylinder Bore | 8.30 in (21.08 cm)
|
| Apron Cylinder Stroke | 28.60 in (72.64 cm)
|
| Bowl Cylinder Bore | 7.30 in (18.54 cm)
|
| Bowl Cylinder Stroke | 34.40 in (87.38 cm)
|
| Compensator Settings - Cushion Hitch Circuit | 2320 psi
|
| Cushion Hitch Circuit | 9.00 gpm (34.07 lpm)
|
| Ejector Cylinder Bore | 8.30 in (21.08 cm)
|
| Ejector Cylinder Stroke | 74.00 in (187.96 cm)
|
| Relief Valve - Implement Circuit | 2030 psi
|
| Relief Valve - Steering Circuit | 1987 psi
|
| Scraper Circuit | 91.00 gpm (344.44 lpm)
|
| Secondary Steering Circuit | 100.00 gpm (378.50 lpm)
|
| Steering Circuit | 100.00 gpm (378.50 lpm)
|
Operating Specifications
| Alternator Supplied Amperage | 75 amps
|
| Cooling System Fluid Capacity | 52.00 gal (196.82 l)
|
| Differential Fluid Capacity | 40.50 gal (153.29 l)
|
| Engine Oil Fluid Capacity | 18.90 gal (71.54 l)
|
| Fuel Capacity | 335.00 gal (1,267.98 l)
|
| Hydraulic System Fluid Capacity | 50.00 gal (189.25 l)
|
| Operating Voltage | 24 volts
|
| Rated Load | 76,000.00 lbs (34,473.06 kg)
|
| Scraper Capacity - Heaped | 50.00 cu yd (38.23 cu m)
|
| Scraper Capacity - Struck | 41.00 cu yd (31.35 cu m)
|
| Tire Size | 37.50-R35
|
| Top Speed - Loaded | 33.00 mph (53.11 kph)
|
| Transmission Fluid Capacity | 45.70 gal (172.97 l)
|
| Wheel Coolant Fluid Capacity - each | 39.00 gal (147.62 l)
|
Scraper Bowl
| Apron Closure Force | 38,250.00 lbs (17,349.93 kg)
|
| Apron Opening | 79.00 in (200.66 cm)
|
| Capacity - Struck | 24.00 cu yd (18.35 cu m)
|
| Cutting Edge Thickness | 1.20 in (3.05 cm)
|
| Depth of Cut - Maximum | 17.20 in (43.69 cm)
|
| Depth of Spread - Maximum | 18.90 in (48.01 cm)
|
| Ground Clearance - Maximum | 21.50 in (54.61 cm)
|
| Hyd. Penetration Force - 621G | 81,000.00 lbs (36,741.03 kg)
|
| Rated Load | 82,260.00 lbs (37,312.55 kg)
|
| Scraper Capacity - Heaped | 34.00 cu yd (25.99 cu m)
|
| Width - Cut - To Router Bits | 138.30 in (351.28 cm)
|
Scraper Engine
| Bore | 4.50 in (11.43 cm)
|
| Displacement | 538.00 cu in (8,816.26 cu cm)
|
| Gross Power | 270.00 hp (201.34 kw)
|
| Gross Power - Gear 1 | 274.00 hp (204.33 kw)
|
| Make | Caterpillar
|
| Net Power - Gear 1 | 249.00 hp (185.68 kw)
|
| Stroke | 5.90 in (14.99 cm)
|
Service Refill Capacities - Scraper
| Cooling System | 20.00 gal (75.70 l)
|
| Differential | 3.20 gal (12.11 l)
|
| Final Drive - Each | 5.00 gal (18.93 l)
|
| Transmission | 19.00 gal (71.92 l)
|
| Wheel Coolant - Each | 19.80 gal (74.94 l)
|
Service Refill Capacities - Tractor
| Cooling System | 29.00 gal (109.77 l)
|
| Crankcase | 11.90 gal (45.04 l)
|
| Differential | 39.00 gal (147.62 l)
|
| Final Drive - Each | 6.10 gal (23.09 l)
|
| Hydraulic Reservoir | 50.20 gal (190.01 l)
|
| Transmission | 29.00 gal (109.77 l)
|
| Wheel Coolant - Each | 19.80 gal (74.94 l)
|
| Windshield Washer | 1.50 gal (5.68 l)
|
Standards
Steering System
| Hydraulic Output | 100.00 gpm (378.50 lpm)
|
| Steering Angle - Left | 85 degrees
|
| Steering Angle - Right | 90 degrees
|
| Width - 180 degrees Turn | 40.00 ft (12.19 m)
|
Tractor Engine
| Bore | 5.40 in (13.72 cm)
|
| Displacement | 1,099.00 cu in (18,009.42 cu cm)
|
| Flywheel Power - Tractor/Scraper | 336 kW (450) / 186 kW (249)
|
| Gross Power | 515.00 hp (384.04 kw)
|
| Gross Power - Gears 3-8 | 519.00 hp (387.02 kw)
|
| Make | Caterpillar
|
| Net Power - Gears 1-2 | 450.00 hp (335.57 kw)
|
| Net Power - Gears 3-8 | 485.00 hp (361.67 kw)
|
| Stroke | 6.00 in (15.24 cm)
|
Transmission
| 1 Forward | 3.40 mph (5.47 kph)
|
| 2 Forward | 6.20 mph (9.98 kph)
|
| 3 Forward | 7.60 mph (12.23 kph)
|
| 4 Forward | 10.30 mph (16.58 kph)
|
| 5 Forward | 13.80 mph (22.21 kph)
|
| 6 Forward | 18.70 mph (30.09 kph)
|
| 7 Forward | 25.20 mph (40.56 kph)
|
| 8 Forward | 34.10 mph (54.88 kph)
|
| Max Speed Forward | 34.10 mph (54.88 kph)
|
| Max Speed Reverse | 6.20 mph (9.98 kph)
|
| Number of Forward Gears | 8
|
| Number of Reverse Gears | 1
|
| Reverse | 6.20 mph (9.98 kph)
|
| Top Speed - Loaded | 33.00 mph (53.11 kph)
|
Weights
| Front Axel - loaded | 92,975.00 lbs (42,172.80 kg)
|
| Front Axle - empty | 67,700.00 lbs (30,708.24 kg)
|
| Operating Weight | 114,743.90 lbs (52,047.02 kg)
|
| Operating Weight - Loaded - Approximate | 194,909.00 lbs (88,409.35 kg)
|
| Rear Axle - empty | 47,045.00 lbs (21,339.28 kg)
|
| Rear Axle - loaded | 96,770.00 lbs (43,894.19 kg)
|
| Total Operating - empty | 114,745.00 lbs (52,047.52 kg)
|
| Total Operating - Loaded | 189,745.00 lbs (86,066.99 kg)
|
Weights - Push-Pull
| Front Axle | 69,670.00 lbs (31,601.82 kg)
|
| Front Axle - Loaded | 98,139.00 lbs (44,515.16 kg)
|
| Rear Axle | 48,414.00 lbs (21,960.25 kg)
|
| Rear Axle - Loaded | 102,145.00 lbs (46,332.25 kg)
|
| Scraper Shipping | 47,601.00 lbs (21,591.48 kg)
|
| Total Operating - Empty | 118,084.00 lbs (53,562.07 kg)
|
| Total Operating - Loaded | 200,284.00 lbs (90,847.41 kg)
|
| Total Shipping | 116,100.00 lbs (52,662.14 kg)
|
| Tractor Shipping | 68,499.00 lbs (31,070.66 kg)
|
Weights - Standard, Tandem
| Front Axle | 67,700.00 lbs (30,708.24 kg)
|
| Front Axle Weight - Loaded | 96,503.00 lbs (43,773.08 kg)
|
| Rear Axle | 47,044.00 lbs (21,338.83 kg)
|
| Rear Axle - Weight - Loaded | 100,441.00 lbs (45,559.33 kg)
|
| Scraper Shipping | 46,231.00 lbs (20,970.05 kg)
|
| Total Operating - Empty | 114,744.00 lbs (52,047.07 kg)
|
| Total Operating - Loaded | 196,944.00 lbs (89,332.41 kg)
|
| Total Shipping | 112,760.00 lbs (51,147.14 kg)
|
| Tractor Shipping | 66,529.00 lbs (30,177.08 kg)
|
