CAT 637K (Tier 2/Stage II) Motor Scraper

Dimensions

Ground Clearance – Tractor 26.1 in (662.94 mm)
Rear Axle – Rear Of Machine 90.2 in (2291.08 mm)
Height – Overall Shipping 163.2 in (4145.28 mm)
Height – Scraper Blade Maximum 20 in (508 mm)
Height – Top Of Cab 12.25 ft in (0.32 m)
Length – Maximum (Push-Pull) 655.1 in (16639.54 mm)
Length – Overall Machine – Standard 597 in (15163.8 mm)
Wheel Base 28.9 ft in (0.74 m)
Extended Push Block (Push-Pull) 108 in (2743.2 mm)
Width – Inside Of Bowl 134 in (3403.6 mm)
Width – Outside Rear Tires 143.2 in (3637.28 mm)
Width – Overall Machine 155 in (3937 mm)
Front Of Tractor To Front Axle 142.2 in (3611.88 mm)
Width – Tractor 137.81 in (3500.12 mm)
Width – Rear Tire Centers 96.9 in (2461.27 mm)
Axle To Vertical Hitch Pin 20 in (508 mm)

General

Overall Width 12.93 ft in (3.95 m)
Overall Shipping Height 13.62 ft in (4.16 m)
Fuel Tank Refill Capacity – Scraper 370 gal (1400.61 L)
Maximum Depth Of Cut 17.7 in (449.58 mm)
Maximum Depth Of Spread 21.1 in (535.95 mm)
180 Degrees Curb-To-Curb Turning Width 40.12 ft in (12.23 m)
Rated Load 37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
Scraper Capacity – Heaped 34 yd3 (26 m3)
Scraper Capacity – Struck 24 yd3 (18.35 m3)
Tires – Scraper 37.25R35**E3
Tires – Tractor 37.25R35**E3
Top Speed – Loaded 34.71 mph (55.85 km/h)
Width – Cut 11.5 ft in (3.51 m)

Non Push-Pull

Overall Length 49.34 ft in (15.04 m)
Operating Weight – Empty 114950 lb (52140.45 kg)

Engine Details

Emissions Cat C9.3 ACERT and C18 ACERT engines meet U.S. EPA Tier 2/EU Stage II Equivalent emission standards.
Flywheel Power – Tractor 570 hp (425.1 kw)
Engine Model – Tractor Cat C18 ACERT
Rated Engine Rpm – Tractor 1900 rpm

Tractor Engine

Flywheel Power – Tractor/Scraper 570 HP

Engine Details

Engine Model – Scraper Cat C9.3 ACERT
Rated Engine Rpm – Scraper 2150 rpm
Flywheel Power – Scraper 290 hp (216.3 kw)

Transmission

Top Speed – Loaded 34.7 mph (55.9 km/h)

Service Refill Capacities

Fuel Tank Capacity 370 gal (1400.7 L)
Hydraulic System 37.5 gal (142 L)
Crankcase – Tractor 13.7 gal (51.9 L)
Crankcase – Scraper 6.5 gal (24.7 L)
Transmission System – Tractor 29 gal (109.8 L)
Transmission System – Scraper 12.9 gal (48.9 L)
Cooling System – Tractor 19.8 gal (75 L)
Cooling System – Scraper 16.1 gal (61 L)

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).

Scraper Bowl

Scraper Capacity – Heaped 34 yd3 (26 m3)

Implement Cycle Times

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

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
Steering System ISO 5010:2007
Seat Belt SAE J386:FEB2006
Reverse Alarm ISO 9533:2010

Travel Speeds – Runout

Transmission Gear – First 3.4 mph (5.5 km/h)
Transmission Gear – Second 6.2 mph (10 km/h)
Transmission Gear – Third 7.7 mph (12.4 km/h)
Transmission Gear – Fourth 10.5 mph (16.9 km/h)
Transmission Gear – Fifth 14.1 mph (22.7 km/h)
Transmission Gear – Sixth 19 mph (30.6 km/h)
Transmission Gear – Seventh 25.7 mph (41.4 km/h)
Transmission Gear – Eighth 34.7 mph (55.9 km/h)
Transmission Gear – Reverse 6.2 mph (10 km/h)

Push-Pull

Operating Weight – Empty 119060 lb (54004.8 kg)
Overall Length – With Bail Down 54.6 ft in (16.7 m)
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