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.
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General
Rated Load
37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
Fuel Tank Refill Capacity - Scraper
370.0 gal (US)
1400.0 l
180° Curb-to-Curb Turning Width
40.12 ft
12.23 m
Overall Shipping Height
13.62 ft
4.15 m
Overall Width
12.93 ft
3.94 m
Top Speed - Loaded
34.7 mile/h
55.8 km/h
Scraper Capacity - Heaped
34.0 yd³
26.0 m³
Width - Cut
11.5 ft
3.51 m
Maximum Depth of Cut
17.7 in
450.0 mm
Tires - Scraper
37.25R35**E3
37.25R35**E3
Maximum Depth of Spread
21.1 in
535.0 mm
Scraper Capacity - Struck
24.0 yd³
18.3 m³
Tires - Tractor
37.25R35**E3
37.25R35**E3
Engine
Rated Engine RPM - Tractor
1900.0 r/min
1900.0 r/min
Rated Engine RPM - Scraper
2150.0 r/min
2150.0 r/min
Flywheel Power - Scraper
290.0 HP
216.0 kW
Engine Model - Scraper
Cat C9.3
Cat C9.3
Emissions
Cat C9.3 and C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Cat C9.3 and C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Flywheel Power - Tractor
570.0 HP
425.0 kW
Engine Model - Tractor
Cat C18
Cat C18
Tractor Engine
Flywheel Power - Tractor/Scraper
570.0 HP
425.0 kW
Scraper Bowl
Scraper Capacity - Heaped
34.0 yd³
26.0 m³
Transmission
Top Speed - Loaded
34.7 mile/h
55.8 km/h
Service Refill Capacities
Crankcase - Tractor
13.7 gal (US)
52.0 l
Crankcase - Scraper
6.5 gal (US)
24.5 l
Transmission System - Tractor
29.0 gal (US)
110.0 l
Hydraulic System
37.5 gal (US)
142.0 l
Diesel Exhaust Fluid - Scraper
5.8 gal (US)
22.0 l
Diesel Exhaust Fluid - Tractor
8.0 gal (US)
30.5 l
Fuel Tank
370.0 gal (US)
1400.0 l
Transmission System - Scraper
12.9 gal (US)
49.0 l
Cooling System - Scraper
16.1 gal (US)
61.0 l
Cooling System - Tractor
19.8 gal (US)
75.0 l
Dimensions
Front of Tractor to Front Axle
142.2 in
3612.0 mm
Axle to Vertical Hitch Pin
20.0 in
509.0 mm
Wheel Base
346.8 in
8808.0 mm
Rear Axle - Rear of Machine
90.2 in
2292.0 mm
Width - Inside of Bowl
134.0 in
3404.0 mm
Height - Scraper Blade Maximum
20.0 in
510.0 mm
Length - Overall Machine - Standard
597.0 in
15164.0 mm
Height - Overall Shipping
163.2 in
4145.0 mm
Width - Outside Rear Tires
143.2 in
3636.0 mm
Length - Maximum (Push-Pull)
655.1 in
16640.0 mm
Extended Push Block (Push-Pull)
108.0 in
2744.0 mm
Width - Rear Tire Centers
96.9 in
2462.0 mm
Width - Overall Machine
155.0 in
3937.0 mm
Width - Tractor
137.8 in
3499.0 mm
Height - Top of Cab
147.0 in
3733.0 mm
Ground Clearance - Tractor
26.1 in
664.0 mm
Non Push-Pull
Overall Length
49.34 ft
15.04 m
Operating Weight - Empty
114950.0 lb
52140.0 kg
Push-Pull
Overall Length - With Bail Down
54.59 ft
16.64 m
Operating Weight - Empty
119060.0 lb
54005.0 kg
Cab
ROPS/FOPS
ROPS/FOPS meet “ISO Standards.”
ROPS/FOPS meet “ISO Standards.”
Exterior Sound Level
The exterior sound power level for the standard machine (ISO 6393) is 116 dB(A).
The exterior sound power level for the standard machine (ISO 6393) is 116 dB(A).
Safety Criteria Compliance Standards
Seat Belt
SAE J386:FEB2006
SAE J386:FEB2006
Reverse Alarm
ISO 9533:2010
ISO 9533:2010
Rollover Protection Structure (ROPS)
ISO 3471:2008 for up to 21 282 kg (46,919 lb)
ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Brakes
ISO 3450:2011
ISO 3450:2011
Falling Object Protective Structure (FOPS)
ISO 3449:2005 Level II
ISO 3449:2005 Level II
Steering System
ISO 5010:2007
ISO 5010:2007
Travel Speeds - Runout
Transmission Gear - Third
7.7 mile/h
12.4 km/h
Transmission Gear - Reverse
6.2 mile/h
9.9 km/h
Transmission Gear - First
3.4 mile/h
5.5 km/h
Transmission Gear - Seventh
25.7 mile/h
41.95 km/h
Transmission Gear - Fifth
14.1 mile/h
22.7 km/h
Transmission Gear - Eighth
34.7 mile/h
55.8 km/h
Transmission Gear - Fourth
10.5 mile/h
16.9 km/h
Transmission Gear - Second
6.2 mile/h
10.0 km/h
Transmission Gear - Sixth
19.0 mile/h
30.6 km/h
Implement Cycle Times
Bail Lower
2.1 s
2.1 s
Ejector Extend
8.5 s
8.5 s
Apron Lower
3.8 s
3.8 s
Bowl Raise
3.5 s
3.5 s
Bowl Lower
3.5 s
3.5 s
Apron Raise
4.0 s
4.0 s
Bail Raise
1.5 s
1.5 s
Ejector Retract
8.5 s
8.5 s