Get a Quote

Cat’s 637K 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.

Cat Specs
Photos
Downloads

Tractor Engine

Flywheel Power - Tractor/Scraper
570

Scraper Bowl

Scraper Capacity - Heaped
34 yd³

Transmission

Top Speed - Loaded
34.7 mile/h

Engine

Emissions
Cat C9.3 and C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Flywheel Power - Tractor
570 HP

Dimensions

Width - Outside Rear Tires
143.2 in
Width - Overall Machine
155 ft
Width - Tractor
137.8 ft
Width - Inside of Bowl
134 ft
Height - Overall Shipping
163.2 ft
Height - Top of Cab
147 ft
Ground Clearance - Tractor
26.1 ft
Front of Tractor to Front Axle
142.2 ft
Axle to Vertical Hitch Pin
20 ft
Height - Scraper Blade Maximum
20 ft
Wheel Base
346.8 ft
Rear Axle - Rear of Machine
90.2 ft
Length - Overall Machine - Standard
597 in
Width - Rear Tire Centers
96.9 in

Service Refill Capacities

Fuel Tank
370 gal (US)
Transmission System - Tractor
29 gal (US)
Diesel Exhaust Fluid - Tractor
8 gal (US)
Crankcase - Tractor
13.7 gal (US)
Cooling System - Scraper
16.1 gal (US)
Hydraulic System
37.5 gal (US)
Crankcase - Scraper
6.5 gal (US)
Cooling System - Tractor
19.8 gal (US)
Diesel Exhaust Fluid - Scraper
5.8 gal (US)
Transmission System - Scraper
12.9 gal (US)

Safety Criteria Compliance Standards

Seat Belt
SAE J386:FEB2006
Brakes
ISO 3450:2011
Reverse Alarm
ISO 9533:2010
Falling Object Protective Structure (FOPS)
ISO 3449:2005 Level II
Rollover Protection Structure (ROPS)
ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Steering System
ISO 5010:2007

Travel Speeds - Runout

Transmission Gear - First
3.4 mile/h
Transmission Gear - Eighth
34.7 mile/h
Transmission Gear - Third
7.7 mile/h
Transmission Gear - Sixth
19 mile/h
Transmission Gear - Seventh
25.7 mile/h
Transmission Gear - Fourth
10.5 mile/h
Transmission Gear - Reverse
6.2 mile/h
Transmission Gear - Fifth
14.1 mile/h
Transmission Gear - Second
6.2 mile/h

Implement Cycle Times

Ejector Extend
8.5 s
Bowl Lower
3.5 s
Ejector Retract
8.5 s
Apron Lower
3.8 s
Apron Raise
4 s
Bail Lower
2.1 s
Bowl Raise
3.5 s
Bail Raise
1.5 s

General

Overall Width
12.93 ft
Tires - Tractor
37.25R35**E3
Width - Cut
11.5 ft
180° Curb-to-Curb Turning Width
40.12 ft
Maximum Depth of Spread
21.1 in
Top Speed - Loaded
34.7 mile/h
Rated Load
37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
Maximum Depth of Cut
17.7 in
Overall Shipping Height
13.62 ft
Scraper Capacity - Struck
24 yd³
Scraper Capacity - Heaped
34 yd³
Fuel Tank Refill Capacity - Scraper
370 gal (US)
Tires - Scraper
37.25R35**E3

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).