631K Delivering more for Q.H. & M. Birt 631K Delivering more for Q.H. & M. Birt
Wheel Tractor-Scraper K Series Wheel Tractor-Scraper K Series
Wheel Tractor-Scraper K Series Operator Testimonial Wheel Tractor-Scraper K Series Operator Testimonial
Wheel Tractor Scraper CAT® 631K C202 Wheel Tractor Scraper CAT® 631K C202
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SPECS SUMMARY

Flywheel Power - Tractor/Scraper570 HP (425 kW)
Scraper Capacity - Heaped34 yd³ (26 m³)
Top Speed - Loaded34.7 mile/h (55.8 km/h)
Front of Tractor to Front Axle142.2 in (3612 mm)
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.

Specifications

Flywheel Power - Tractor/Scraper570 HP (425 kW)
Scraper Capacity - Heaped34 yd³ (26 m³)
Top Speed - Loaded34.7 mile/h (55.8 km/h)
Front of Tractor to Front Axle142.2 in (3612 mm)
Axle to Vertical Hitch Pin20 in (509 mm)
Wheel Base346.8 in (8808 mm)
Rear Axle - Rear of Machine108 in (2744 mm)
Operating Weight - Empty102750 lb (46600 kg)
Overall Length - With Bail Down54.59 ft (16.64 m)
Operating Weight - Empty106430 lb (48275 kg)
ROPS/FOPSROPS/FOPS meet “ISO Standards.”
Exterior Sound LevelThe exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A).
Steering SystemISO 5010:2007
Rollover Protection Structure (ROPS)ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Reverse AlarmISO 9533:2010
Seat BeltSAE J386:FEB2006
Falling Object Protective Structure (FOPS)ISO 3449:2005 Level II
BrakesISO 3450:2011
Overall Length49.34 ft (15.04 m)
Tires - Scraper37.25R35**E3
Transmission Gear - Sixth19 mile/h (30.6 km/h)
Bowl Lower3.5 s (3.5 s)
Ejector Extend8.5 s (8.5 s)
Apron Lower3.8 s (3.8 s)
Bail Lower2.1 s (2.1 s)
Ejector Retract8.5 s (8.5 s)
Bail Raise1.5 s (1.5 s)
Bowl Raise3.5 s (3.5 s)
Transmission Gear - Second6.2 mile/h (10 km/h)
Width - Inside of Bowl134 in (3404 mm)
Transmission Gear - Third7.7 mile/h (12.4 km/h)
Transmission Gear - Fifth14.1 mile/h (22.7 km/h)
Transmission Gear - First3.4 mile/h (5.5 km/h)
Transmission Gear - Eighth34.7 mile/h (55.8 km/h)
Transmission Gear - Fourth10.5 mile/h (16.9 km/h)
Transmission Gear - Reverse6.2 mile/h (9.9 km/h)
Transmission Gear - Seventh25.7 mile/h (41.4 km/h)
Height - Overall Shipping153.2 in (3892 mm)
Height - Top of Cab147 in (3733 mm)
Width - Outside Rear Tires143.2 in (3636 mm)
Engine Model - TractorCat C18
Scraper Capacity - Struck24 yd³ (18.3 m³)
Tires - Tractor37.25R35**E3
Maximum Depth of Cut17.7 in (450 mm)
Width - Cut11.5 ft (3.51 m)
Scraper Capacity - Heaped34 yd³ (26 m³)
Overall Width12.93 ft (3.94 m)
Top Speed - Loaded34.7 mile/h (55.8 km/h)
Fuel Tank Refill Capacity - Scraper231 gal (US) (874 l)
Overall Shipping Height12.75 ft (3.89 m)
180° Curb-to-Curb Turning Width40.12 ft (12.23 m)
Maximum Depth of Spread21.1 in (535 mm)
Flywheel Power - Tractor570 HP (425 kW)
Rated Engine RPM - Tractor1900 r/min (1900 r/min)
EmissionsCat C18 engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Width - Overall Machine155 in (3937 mm)
Fuel Tank231 gal (US) (874 l)
Hydraulic System37.5 gal (US) (142 l)
Diesel Exhaust Fluid (DEF)8 gal (US) (30.5 l)
Cooling System19.8 gal (US) (75 l)
Crankcase - Tractor13.7 gal (US) (52 l)
Transmission System29 gal (US) (110 l)
Height - Scraper Blade Maximum20 in (510 mm)
Ground Clearance - Tractor26.1 in (664 mm)
Length - Overall Machine - Standard597 in (15164 mm)
Length - Maximum (Push-Pull)655.1 in (16640 mm)
Width - Tractor137.8 in (3499 mm)
Rated Load37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
Width - Rear Tire Centers96.9 in (2462 mm)
Apron Raise4 s (4 s)

Benefits and Features

  • The Payload Estimator will calculate the payload of the machine in tonnes or tons by measuring the bowl lift cylinder pressures at the beginning of the loaded haul segment. This feature works best when using Sequence Assist. Using Payload Estimator during testing has achieved better than 95% accuracy when compared to actual scale weights. The Payload Estimator feature comes automatically when a machine is ordered with Sequence Assist.
  • Load Assist (Optional) is designed to help shorten the learning curve of inexperienced operators to ensure consistency and faster loading of material while reducing effort of the operator. Based on the speed of the machine, Load Assist automatically adjusts the cutting edge height to manage wheel slip and to ensure consistent and efficient loading in bulk earthmoving applications.
  • Machine Speed Limit is designed to take the place of top gear selection. If the machine top speed needs to be limited the operator can select the top speed through the display or the top speed can be set in ET. This will allow the machine to find the correct gear that works best for the engine and transmission. Allowing the engine and transmission to select the correct gear to pull the load in most cases resulting in a lower engine load factor and lower fuel burn verses using top gear selection that required the machine to run at engine speeds at or close to high idle.
  • Sequence Assist (Optional) uses cylinder position sensors to automate bowl, apron and further implement controls throughout the four core work cycles: Dig, Haul, Unload and Return. When utilized this can reduce up to 14 individual operator commands per cycle. Sequence Assist simplifies control over the implements, reduces joystick usage, automatically controls cushion hitch, transmission hold and ejector.
  • Ground Speed Control sets the desired top speed by the operator if job site conditions or segment speed limits require a speed less than full run out. Machine Speed Limit is intended for use when top speed needs to be limited for longer durations and Ground Speed Control is intended for use when the top speed needs to be reduced for shorter segments or intermediate periods of time. The operator can set the desired top speed and the machine will find the correct gear that works best for the engine and transmission.
  • Cat Grade Control (Optional) intelligently ensures the machine does not cut below grade in the cut area or over fill in the fill area – avoiding rework and moving unnecessary material.

  • K Series steering system design requires significantly less steering effort. The reduced steering effort will allow for decreased operator fatigue and a more efficient operator resulting in possible higher rates of production late in the work cycle.
  • Advanced Cushion Hitch allows the cushion hitch to prevent end stroke by having the ability to predict end stroke events and manage the rate of dampening. Resulting in reduced hitch maintenance and improved operator ride in rough conditions.
  • The K Series cab interior improves operator comfort and visibility. The overall interior is 21% larger than the G Series cab.

  • In the event of an engine over speed situation, the compression brake or brakes will automatically engage with no operator input. The machine determines the over speed condition based on rate of acceleration and applies compression brakes automatically.
  • Differential Lock Engagement Protection- This standard feature allows the machine to prevent the operator from engaging the differential lock when damage could occur.

  • The fuel, water and engine oil are relocated at ground level on the right hand side of the machine for easy access.

Standard Equipment

  • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Cat C18
  • Compression engine brake
  • Electric start, 24V
  • Air cleaner, dry type with precleaner
  • Fan, hydraulic
  • Ground level engine shutdown
  • Radiator, aluminum unit core, 9 fins per inch
  • Guard, crankcase
  • Starting aid, ether
  • Braking system:
    • Primary and secondary, wet disc, hydraulic
    • Parking, hydraulic-released, spring-applied
    • Throttle lock
  • Transmission:
    • 8-speed planetary power shift
    • ECPC control
    • APECS software
    • Programmable top gear selection
    • Transmission hold
    • Differential lock
    • Guard, power train
    • Standard tire spin reduction
    • Ground speed control
    • Machine speed limit
    • Differential lock protection
  • Braking system:
    • Primary and secondary, dry caliper, hydraulic actuated
  • Alternator, 150 Amp
  • Batteries (4), 12V, 1,000 CCA, maintenance free, high output
  • Electrical system, 24V
  • Lighting system:
    • Headlights, LED
    • Turn signals with hazard function, LED floodlights, (2) cutting edge (1) bowl, halogen side vision (2)
  • Starting/charging receptacle
  • Alarm, backup
  • Lighting system:
    • Brake lights, LED
    • Turn signals with hazard function, LED
  • HVAC system, heat, AC, defrost
  • Thermostat control of HVAC system
  • Coat hook
  • Lunchbox platform with holding strap
  • Diagnostic connection (2)
  • 12V power ports (2)
  • Differential lock (1)
  • Dome courtesy light
  • Horn, electric
  • T-Handle implement control
  • Mirror, rearview
  • Radio ready
  • ROPS/FOPS cab, pressurized
  • Keypad switches:
    • Throttle lock
    • Wipers/washers
    • Hazard lights
    • Retarding level select
    • Work lights on, off
    • Information mode on Messenger Display
  • Safety tab rocker switches
  • Seat belt, static two-piece
  • Seat, Cat Advanced Ride Management (ARM), Cat Comfort Series 3, rotates 30 degrees
  • Steering wheel, tilt, telescoping, padded
  • Windows, right side emergency egress
  • Windows, sliding
  • Windows, laminated, zipped in
  • Windshield wipers, front and rear windows, includes washers
  • Door lock
  • Messenger Display
  • Gauges, warnings include:
    • Coolant temperature
    • Engine oil temperature
    • Hydraulic oil temperature
    • Diesel Particulate Filter (DPF) temperature
    • Fuel level
    • Park brake
    • Implement lockout
    • Brake system
    • Regeneration required
    • Throttle lock
    • System voltage
    • Secondary steering
    • Bail down
    • Ejector auto
    • Differential lock
    • Apron float
    • Transmission hold
    • Cushion hitch
    • High beam lights
    • Action lamp
    • Engine speed, rpm
    • Gear selection
    • DEF fill levels
  • Extended Life Coolant to –37° C (–34° F)
  • Advanced cushion hitch
  • Accumulators (cushion hitch) with Canadian Registration Number (CRN)
  • Fast oil change
  • Fenders, non-metallic
  • Heater, engine coolant 120V
  • Rims (2)
  • Tow hooks, front
  • Vandalism locks
  • Heater, engine coolant 120V
  • Steering locks
  • Bowl:
    • 18.3 m3 (24 yd3), struck
    • 26 m3 (34 yd3), heaped
  • Vandalism locks
  • Rims (2)
  • Hydraulic position sensing cylinders (bowl lift and apron)

Optional Equipment

  • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Secondary Steering Arrangement
  • Sequence Assist Arrangement with Payload Estimator
  • Load Assist
  • Cat Grade Control with Load Assist
  • Advanced Tire Spin Reduction
  • Camera arrangement – Work Area Vision System (WAVS)
  • Cab beacon
  • Air horn
  • Air horn and beacon
  • Fender, scraper
  • Guard, overflow
  • Wiring group
  • Push Pull
  • Film arrangement – U.S. (ANSI)
  • Film arrangement – International (ISO)