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 Model Year
ROPS/FOPS	ROPS/FOPS meet “ISO Standards.” — Starting 2026 Model Year

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

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 Model Year
Engine Model - Tractor	Cat® C18 — Starting 2026 Model Year
Flywheel Power - Tractor	570.00 hp (425.06 kw) — Starting 2026 Model Year
Rated Engine RPM - Tractor	1900 r/min — Starting 2026 Model Year

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

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

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

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

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

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

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

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

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