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631K - Tier 2

Open Bowl Scrapers

Quick loading, high travel speeds and the ability to load and dump on the run yield fast cycle times, allowing Cat Wheel Tractor-Scrapers to consistently deliver high productivity at the lowest cost per ton.

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Overall Shipping Height 3.89 m
Maximum Depth of Spread 535 mm
Tires - Tractor 37.25R35**E3
Fuel Tank Refill Capacity - Scraper 874 l
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631K - Tier 2
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OVERVIEW

Delivers results

FEATURES & BENEFITS

EFFICIENCY THROUGH TECHNOLOGY

• Up to 12% improvement in productivity.• Advanced productivity electronic control system (APECS) allowsthe engine and transmission to communicate on a high level. Thisco... Read more

OPERATOR COMFORT AND CONTROL

• Reduce up to 14 individual operator commands per cycle with sequence assist (optional attachment).• Steer with less effort using the newly designed high-pressuresteerin... Read more

BUILT-IN SAFETY FEATURES

• Get in and out of the cab easier with the new powered access ladder system (optional attachment).• Enhance an operator’s awareness of site surroundings with the optiona... Read more

SAVE ON MAINTENANCE TIME

• The spacious cab features easy, intuitive controls and excellentvisibility. The cab provides a comfortable working environment forall-day operation.• Cat advanced ride... Read more

SPECIFICATIONS FOR 631K - Tier 2

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General
Overall Shipping Height 3.89 m
Maximum Depth of Spread 535 mm
Tires - Tractor 37.25R35**E3
Fuel Tank Refill Capacity - Scraper 874 l
Scraper Capacity - Struck 18.3 m³
Scraper Capacity - Heaped 26 m³
Top Speed - Loaded 55.8 km/h
Overall Width 3.94 m
Maximum Depth of Cut 450 mm
Width - Cut 3.51 m
180° Curb-to-Curb Turning Width 12.23 m
Rated Load 37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
Tires - Scraper 37.25R35**E3
Engine
Rated Engine RPM - Tractor 1900 r/min
Engine Model - Tractor Cat C18
Emissions Cat C18 engine meets U.S. EPA Tier 2/EU Stage II Equivalent emission standards.
Flywheel Power - Tractor 425 kW
Tractor Engine
Flywheel Power - Tractor/Scraper 425 kW
Scraper Bowl
Scraper Capacity - Heaped 26 m³
Transmission
Top Speed - Loaded 55.8 km/h
Service Refill Capacities
Crankcase - Tractor 52 l
Transmission System 110 l
Fuel Tank 874 l
Hydraulic System 142 l
Cooling System 75 l
Dimensions
Front of Tractor to Front Axle 3612 mm
Axle to Vertical Hitch Pin 509 mm
Wheel Base 8808 mm
Rear Axle - Rear of Machine 2744 mm
Ground Clearance - Tractor 664 mm
Width - Outside Rear Tires 3636 mm
Width - Inside of Bowl 3404 mm
Width - Rear Tire Centers 2462 mm
Height - Scraper Blade Maximum 510 mm
Height - Top of Cab 3733 mm
Length - Maximum (Push-Pull) 16640 mm
Height - Overall Shipping 3892 mm
Width - Overall Machine 3937 mm
Length - Overall Machine - Standard 15164 mm
Width - Tractor 3499 mm
Non Push-Pull
Operating Weight - Empty 46600 kg
Overall Length 15.04 m
Push-Pull
Overall Length - With Bail Down 16.64 m
Operating Weight - Empty 48275 kg
Cab
Exterior Sound Level The exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A).
ROPS/FOPS ROPS/FOPS meet “ISO Standards.”
Safety Criteria Compliance Standards
Reverse Alarm ISO 9533:2010
Falling Object Protective Structure (FOPS) ISO 3449:2005 Level II
Seat Belt SAE J386:FEB2006
Rollover Protection Structure (ROPS) ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Brakes Brakes ISO 3450:2011
Steering System ISO 5010:2007
Travel Speeds - Runout
Transmission Gear - First 5.5 km/h
Transmission Gear - Fourth 16.9 km/h
Transmission Gear - Sixth 30.6 km/h
Transmission Gear - Third 12.4 km/h
Transmission Gear - Fifth 22.7 km/h
Transmission Gear - Seventh 41.4 km/h
Transmission Gear - Reverse 9.9 km/h
Transmission Gear - Eighth 55.8 km/h
Transmission Gear - Second 10 km/h
Implement Cycle Times
Bowl Raise 3.5 s
Bail Lower 2.1 s
Apron Raise 4 s
Ejector Extend 8.5 s
Bowl Lower 3.5 s
Bail Raise 1.5 s
Ejector Retract 8.5 s
Apron Lower 3.8 s

SELECT MODELS TO COMPARE

Open Bowl Scrapers

621K

Maximum Depth of Cut 315 mm
Maximum Depth of Spread 540 mm
180° Curb-to-Curb Turning Width 11.8 m
Scraper Capacity - Struck 13 m³
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