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Caterpillar 631 - Tier 2 Scraper Specs

Cab

Caterpillar 631 - Tier 2 Scraper Cab specifications
Exterior Sound Level The exterior sound power level for the standard machine (ISO 6393) is 116 dB(A). - Starting 2026
ROPS/FOPS ROPS/FOPS meet “ISO Standards.” - Starting 2026

Dimensions

Caterpillar 631 - Tier 2 Scraper Dimensions specifications
Axle to Vertical Hitch Pin 20.00 in (50.80 cm) - Starting 2026
Front of Tractor to Front Axle 142.00 in (360.68 cm) - Starting 2026
Ground Clearance - Tractor 26.10 in (66.29 cm) - Starting 2026
Height - Overall Shipping 153.20 in (389.13 cm) - Starting 2026
Height - Scraper Blade Maximum 20.00 in (50.80 cm) - Starting 2026
Height - Top of Cab 149.80 in (380.49 cm) - Starting 2026
Length - Maximum (Push-Pull) 655.10 in (1,663.95 cm) - Starting 2026
Length - Overall Machine - Standard 597.00 in (1,516.38 cm) - Starting 2026
Rear Axle - Rear of Machine 108.00 in (274.32 cm) - Starting 2026
Wheel Base 346.80 in (880.87 cm) - Starting 2026
Width - Inside of Bowl 134.00 in (340.36 cm) - Starting 2026
Width - Outside Bowl - Shipping Width 143.10 in (363.47 cm) - Starting 2026
Width - Outside Rear Tires 143.20 in (363.73 cm) - Starting 2026
Width - Overall Machine 155.00 in (393.70 cm) - Starting 2026
Width - Overall Machine - Ladder Down 159.30 in (404.62 cm) - Starting 2026
Width - Rear Tire Centers 96.90 in (246.13 cm) - Starting 2026
Width - Tractor 144.20 in (366.27 cm) - Starting 2026

Engine

Caterpillar 631 - Tier 2 Scraper Engine specifications
Emissions Cat® C18 engine meets U.S. EPA Tier 2/EU Stage II Equivalent emission standards. - Starting 2026
Engine Model - Tractor Cat® C18 - Starting 2026
Flywheel Power - Tractor 570.00 hp (425.06 kw) - Starting 2026
Rated Engine RPM - Tractor 1900 r/min - Starting 2026

General

Caterpillar 631 - Tier 2 Scraper General specifications
180° Curb-to-Curb Turning Width 40.12 ft (12.23 m) - Starting 2026
Fuel Tank Refill Capacity - Scraper 231.00 gal (874.34 l) - Starting 2026
Maximum Depth of Cut 17.70 in (44.96 cm) - Starting 2026
Maximum Depth of Spread 21.10 in (53.59 cm) - Starting 2026
Overall Shipping Height 12.75 ft (3.89 m) - Starting 2026
Overall Width 12.93 ft (3.94 m) - Starting 2026
Rated Load 37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons) - Starting 2026
Scraper Capacity - Heaped 34 cu yd - Starting 2026
Scraper Capacity - Struck 24 cu yd - Starting 2026
Tires - Scraper 37.25R35**E3 - Starting 2026
Tires - Tractor 37.25R35**E3 - Starting 2026
Top Speed - Loaded 34.70 mph (55.84 kph) - Starting 2026
Width - Cut 11.50 ft (3.51 m) - Starting 2026

Implement Cycle Times

Caterpillar 631 - Tier 2 Scraper Implement Cycle Times specifications
Apron Lower 3.8 s - Starting 2026
Apron Raise 4 s - Starting 2026
Bail Lower 2.1 s - Starting 2026
Bail Raise 1.5 s - Starting 2026
Bowl Lower 3.5 s - Starting 2026
Bowl Raise 3.5 s - Starting 2026
Ejector Extend 8.5 s - Starting 2026
Ejector Retract 8.5 s - Starting 2026

Non Push-Pull

Caterpillar 631 - Tier 2 Scraper Non Push-Pull specifications
Operating Weight - Empty 102,750.00 lbs (46,606.67 kg) - Starting 2026
Overall Length 49.34 ft (15.04 m) - Starting 2026

Push-Pull

Caterpillar 631 - Tier 2 Scraper Push-Pull specifications
Operating Weight - Empty 106,430.00 lbs (48,275.90 kg) - Starting 2026
Overall Length - With Bail Down 54.59 ft (16.64 m) - Starting 2026

Safety Criteria Compliance Standards

Caterpillar 631 - Tier 2 Scraper Safety Criteria Compliance Standards specifications
Brakes Brakes ISO 3450:2011 - Starting 2026
Falling Object Protective Structure (FOPS) ISO 3449:2005 Level II - Starting 2026
Reverse Alarm ISO 9533:2010 - Starting 2026
Rollover Protection Structure (ROPS) ISO 3471:2008 for up to 21 282 kg (46,919 lb) - Starting 2026
Seat Belt SAE J386:FEB2006 - Starting 2026
Steering System ISO 5010:2007 - Starting 2026

Scraper Bowl

Caterpillar 631 - Tier 2 Scraper Scraper Bowl specifications
Scraper Capacity - Heaped 34 cu yd - Starting 2026

Service Refill Capacities

Caterpillar 631 - Tier 2 Scraper Service Refill Capacities specifications
Cooling System 18.75 gal (70.97 l) - Starting 2026
Crankcase - Tractor 13.70 gal (51.85 l) - Starting 2026
Diesel Exhaust Fluid (DEF) 8 gal(US)/d - Starting 2026
Fuel Tank 231.00 gal (874.34 l) - Starting 2026
Hydraulic System 37.50 gal (141.94 l) - Starting 2026
Real Wheels (Each) 2.37 gal (8.97 l) - Starting 2026
Transmission System 29.00 gal (109.77 l) - Starting 2026

Service Refill Capacities - Scraper

Caterpillar 631 - Tier 2 Scraper Service Refill Capacities - Scraper specifications
Final Drive - Each 8.71 gal (32.97 l) - Starting 2026

Service Refill Capacities - Tractor

Caterpillar 631 - Tier 2 Scraper Service Refill Capacities - Tractor specifications
Differential 40.41 gal (152.95 l) - Starting 2026
Windshield Washer Reservoir 1.30 gal (4.92 l) - Starting 2026

Tractor Engine

Caterpillar 631 - Tier 2 Scraper Tractor Engine specifications
Flywheel Power - Tractor/Scraper 570.00 hp (425.06 kw) - Starting 2026

Transmission

Caterpillar 631 - Tier 2 Scraper Transmission specifications
Top Speed - Loaded 34.70 mph (55.84 kph) - Starting 2026

Travel Speeds - Runout

Caterpillar 631 - Tier 2 Scraper Travel Speeds - Runout specifications
Transmission Gear - Eighth 34.70 mph (55.84 kph) - Starting 2026
Transmission Gear - Fifth 14.10 mph (22.69 kph) - Starting 2026
Transmission Gear - First 3.40 mph (5.47 kph) - Starting 2026
Transmission Gear - Fourth 10.50 mph (16.90 kph) - Starting 2026
Transmission Gear - Reverse 6.20 mph (9.98 kph) - Starting 2026
Transmission Gear - Second 6.20 mph (9.98 kph) - Starting 2026
Transmission Gear - Seventh 25.70 mph (41.36 kph) - Starting 2026
Transmission Gear - Sixth 19.00 mph (30.58 kph) - Starting 2026
Transmission Gear - Third 7.70 mph (12.39 kph) - Starting 2026
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