637G Wheel Tractor Scraper

Quick loading, high travel speeds and the ability to load and dump on the run yield fast cycle times, allowing Caterpillar Wheel Tractor-Scrapers to consistently deliver high productivity at the lowest cost per ton.

Engine

Tractor Engine: Cat C18 ACERTâ„¢
Scraper Engine: Cat C9 ACERTâ„¢

Tractor Engine

Flywheel Power: Tractor/Scraper: 373 kW (500 hp) / 211 kW (283 hp)
Net Power: 345 kW (462 hp) / 373 kW (500 hp)
Gross Power - Gears 1-2: 488.0 hp
Gross Power - Gears 3-8: 526.0 hp
Net Power - Gears 1-2: 462.0 hp
Net Power - Gears 3-8: 500.0 hp
Bore: 5.7 in
Stroke: 7.2 in
Displacement: 1105.0 in3

Scraper Engine

Net Power: 198 kW (266 hp) / 211 kW (283 hp)
Gross Power - Gear 1: 286.0 hp
Gross Power - Gears 2-4: 303.0 hp
Net Power - Gear 1: 266.0 hp
Net Power - Gears 2-4: 283.0 hp
Bore: 4.4 in
Stroke: 5.9 in
Displacement: 538.0 in3

Scraper Bowl

Scraper Capacity: Heaped: 34.0 yd3
Rated Load: 82200.0 lb
Capacity Struck: 24.0 yd3
Depth of Cut - max.: 17.2 in
Width of Cut, to Router Bits: 138.3 in
Ground Clearance - max.: 21.5 in
Cutting Edge - thickness: 1.12 in.
Hyd. Penetration Force - 637G: 81000.0 lb
Depth of Spread - max.: 18.9 in
Apron Opening: 79.0 in
Apron Closure Force: 38250.0 lb

Transmission

Top Speed (Loaded): 33.0 mph
1 Forward: 3.4 mph
2 Forward: 6.2 mph
3 Forward: 7.6 mph
4 Forward: 10.3 mph
5 Forward: 13.8 mph
6 Forward: 18.7 mph
7 Forward: 25.2 mph
8 Forward: 34.1 mph
Reverse: 6.2 mph

Hydraulics

Bowl Cylinder Bore: 7.2 in
Bowl Cylinder Stroke: 34.4 in
Apron Cylinder Bore: 8.2 in
Apron Cylinder Stroke: 28.6 in
Ejector Cylinder Bore: 8.2 in
Ejector Cylinder Stroke: 74.0 in
Steering Circuit: 100.0 gal/min
Scraper Circuit: 91.0 gal/min
Cushion Hitch Circuit: 9.0 gal/min
Secondary Steering Circuit: 100.0 gal/min
Relief Valve - Steering Circuit: 1987.0 psi
Relief Valve - Implement Circuit: 2030.0 psi
Compensator Setting - Cushion Hitch Circuit: 2320.0 psi

Steering

Width - 180Â° Turn: 40.02 ft
Width - 180Â° Turn, right: 40.1 ft
Steering Angle - Right: 90Â°
Steering Angle - Left: 85Â°
Hydraulic Output: 100.0 gal/min

Service Refill Capacities - Tractor

Crankcase: 11.9 gal
Fuel Tank - 637G: 335.0 gal
Transmission: 29.0 gal
Differential: 39.0 gal
Final Drive (per side): 6.1 gal
Cooling System: 29.0 gal
Hydraulic Reservoir: 50.2 gal
Wheel Coolant (each): 19.8 gal
Windshield Washer: 1.5 gal

Service Refill Capacities - Scraper

Fuel Tank - 637G: 335.0 gal
Crankcase: 7.9 gal
Transmission: 19.0 gal
Differential: 3.2 gal
Final Drive (per side): 5.0 gal
Wheel Coolant (each): 19.8 gal
Cooling System: 20.0 gal

Dimensions

Width - Overall Machine: 155.0 in
Width - Tractor: 137.0 in
Width - rear tire center lines: 97.0 in
Width - Inside of Bowl: 134.0 in
Width - Outside Rear Tires: 143.2 in
Width - outside bowl (shipping width): 154.0 in
Height - Overall Shipping: 168.8 in
Height - Top of Cab: 146.3 in
Ground Clearance - Tractor: 26.2 in
Front of Tractor to Front Axle: 132.2 in
Axle to Vertical Hitch Pin: 21.6 in
Height - Scraper Blade Maximum: 21.5 in
Wheelbase: 345.2 in
Length - overall machine: 573.4 in
Rear Axle to Rear of Machine: 95.97 in
Bail Length - max. (push-pull): 195.3 in
Extended Push Block (push-pull): 108.0 in

Weights - Standard, tandem

Total Shipping: 112760.0 lb
Tractor Shipping: 66529.0 lb
Scraper Shipping: 46231.0 lb
Total Operating - empty: 114744.0 lb
Front Axle: 67700.0 lb
Rear Axle: 47044.0 lb
Total Operating - loaded: 196944.0 lb
Front Axle Weight - loaded: 96503.0 lb
Rear Axle Weight - loaded: 100441.0 lb

Weights - Push-Pull

Total Shipping: 116100.0 lb
Tractor Shipping: 68499.0 lb
Scraper Shipping: 47601.0 lb
Total Operating - empty: 118084.0 lb
Front Axle: 69670.0 lb
Rear Axle: 48414.0 lb
Total Operating - loaded: 200284.0 lb
Front Axle - loaded: 98139.0 lb
Rear Axle (Loaded): 102145.0 lb

Transmission - 637G

1 Forward: 3.4 mph
2 Forward: 6.2 mph
3 Forward: 7.6 mph
4 Forward: 10.3 mph
5 Forward: 13.8 mph
6 Forward: 18.7 mph
7 Forward: 25.2 mph
8 Forward: 34.1 mph
Reverse: 6.2 mph