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Open Bowl Scrapers
Cat’s 637 Wheel Tractor-Scraper is engineered to conquer challenges operators face worldwide. With its strength and durability, it works in some of the most difficult conditions and materials one can find.
Top Speed - Loaded
34.7 mile/h/55.8 km/h
180° Curb-to-Curb Turning Width
40.12 ft/12.23 m
Scraper Capacity - Heaped
34 yd³/26 m³
Overall Width
12.93 ft/3.94 m
Key Features
Be More Productive
Work in Comfort
Designed for Safety
Easy to Operate
Integrated Cat Technologies
Execute Efficiency
Specifications
Metric
|
Imperial
General 
Top Speed - Loaded
34.7 mile/h
55.8 km/h
180° Curb-to-Curb Turning Width
40.12 ft
12.23 m
Scraper Capacity - Heaped
34 yd³
26 m³
Overall Width
12.93 ft
3.94 m
Maximum Depth of Spread
21.1 in
535 mm
Maximum Depth of Cut
17.7 in
450 mm
Width - Cut
11.50 ft
3.51 m
Tires - Tractor
37.25R35**E3
Tires - Scraper
37.25R35**E3
Overall Shipping Height
13.62 ft
4.15 m
Fuel Tank Refill Capacity - Scraper
370 gal (US)
1400 l
Scraper Capacity - Struck
24 yd³
18.3 m³
Rated Load
37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
Engine
Emissions
Cat C9.3 and C18 engines meet U.S. EPA Tier 2/EU Stage II Equivalent emission standards.
Flywheel Power - Tractor
570 hp
425 kW
Rated Engine RPM - Tractor
1900 r/min
1900 r/min
Engine Model - Scraper
Cat C9.3 ACERT
Rated Engine RPM - Scraper
2150 r/min
2150 r/min
Flywheel Power - Scraper
290 hp
216 kW
Engine Model - Tractor
Cat C18
Tractor Engine
Flywheel Power - Tractor/Scraper
570 hp
425 kW
Scraper Bowl
Scraper Capacity - Heaped
34 yd³
26 m³
Transmission
Top Speed - Loaded
34.7 mile/h
55.8 km/h
Service Refill Capacities
Crankcase - Scraper
6.5 gal (US)
24.5 l
Transmission System - Scraper
12.9 gal (US)
49 l
Crankcase - Tractor
13.7 gal (US)
52 l
Transmission System - Tractor
29 gal (US)
110 l
Hydraulic System
37.5 gal (US)
142 l
Cooling System - Tractor
19.8 gal (US)
75 l
Fuel Tank
370 gal (US)
1400 l
Cooling System - Scraper
16.1 gal (US)
61 l
Dimensions
Front of Tractor to Front Axle
142.2 in
3612 mm
Axle to Vertical Hitch Pin
20 in
509 mm
Wheel Base
346.8 in
8808 mm
Rear Axle - Rear of Machine
90.2 in
2292 mm
Width - Rear Tire Centers
96.9 in
2462 mm
Width - Inside of Bowl
134 in
3404 mm
Height - Scraper Blade Maximum
20 in
510 mm
Extended Push Block (Push-Pull)
108 in
2744 mm
Width - Outside Rear Tires
143.2 in
3636 mm
Length - Maximum (Push-Pull)
655.1 in
16640 mm
Width - Overall Machine
155 in
3937 mm
Width - Tractor
137.8 in
3499 mm
Length - Overall Machine - Standard
597 in
15164 mm
Height - Top of Cab
147 in
3733 mm
Ground Clearance - Tractor
26.1 in
664 mm
Height - Overall Shipping
163.2 in
4145 mm
Non Push-Pull
Overall Length
49.34 ft
15.04 m
Operating Weight - Empty
114950 lb
52140 kg
Push-Pull
Operating Weight - Empty
114950 lb
52140 kg
Overall Length - With Bail Down
54.59 ft
16.64 m
Cab
ROPS/FOPS
ROPS/FOPS meet “ISO Standards.”
Exterior Sound Level
The exterior sound power level for the standard machine (ISO 6393) is 116 dB(A).
Safety Criteria Compliance Standards
Rollover Protection Structure (ROPS)
ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Falling Object Protective Structure (FOPS)
ISO 3449:2005 Level II
Brakes
ISO 3450:2011
Reverse Alarm
ISO 9533:2010
Seat Belt
SAE J386:FEB2006
Steering System
ISO 5010:2007
Travel Speeds - Runout
Transmission Gear - Reverse
6.2 mile/h
9.9 km/h
Transmission Gear - Seventh
25.7 mile/h
41.95 km/h
Transmission Gear - First
3.4 mile/h
5.5 km/h
Transmission Gear - Third
7.7 mile/h
12.4 km/h
Transmission Gear - Eighth
34.7 mile/h
55.8 km/h
Transmission Gear - Second
6.2 mile/h
10.0 km/h
Transmission Gear - Fourth
10.5 mile/h
16.9 km/h
Transmission Gear - Fifth
14.1 mile/h
22.7 km/h
Transmission Gear - Sixth
19.0 mile/h
30.6 km/h
Implement Cycle Times
Ejector Retract
8.5 s
8.5 s
Bowl Lower
3.5 s
3.5 s
Bail Raise
1.5 s
1.5 s
Apron Lower
3.8 s
3.8 s
Bail Lower
2.1 s
2.1 s
Ejector Extend
8.5 s
8.5 s
Apron Raise
4.0 s
4.0 s
Bowl Raise
3.5 s
3.5 s
Equipment
Standard Equipment
Optional Equipment
Emissions
Cat® C18 engine meets U.S. EPA Tier 2/EU Stage II Equivalent emission standards.
Engine Model - Tractor
Cat® C18
