New | 623K Wheel Tractor-Scraper

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.

Flywheel Power: Tractor/Scraper304 kW (407 hp)
Engine ModelCat C13 ACERT™
Flywheel Power: Tractor407.0 hp
NoteCat C13 ACERT engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards.
Rated Engine RPM2000.0 RPM
Scraper Bowl
Scraper Capacity: Heaped23.0 yd3
Top Speed (Loaded)33.5 mph
Height - Overall Shipping158.9 in
Length - Overall Machine542.0 in
Width - Overall Machine141.1 in
Height - Top of Cab142.6 in
Height - Scraper Blade Maximum20.5 in
Width - Tractor133.1 in
Width - Inside of Bowl120.0 in
Width - Outside Rear Tires128.9 in
Front of Tractor to Front Axle122.8 in
Wheelbase329.5 in
Rear Axle to Rear of Machine89.7 in
Ground Clearance - Tractor21.9 in
Axle to Vertical Hitch Pin17.0 in
Height of Top of Elevator148.3 in
Width - Overall Machine - Ladder Down149.2 in
Width - Rear Tire Centers90.2 in
Service Refill Capacities
Fuel Tank216.09 gal
Crankcase8.08 gal
Cooling System11.89 gal
Diesel Exhaust Fluid8.0572 gal
Hydraulic System21.926 gal
Transmission System24.76 gal
Exterior Sound LevelThe exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A).
ROPS/FOPSMeets SAE and ISO standards
Safety Criteria Compliance Standards
BrakesISO 3450:1996
Falling Object Protective Structure (FOPS)ISO 3449:2005 Level II
Reverse AlarmISO 9533:2010
Rollover Protection Structure (ROPS)ISO 3471:2008 for up to 17 084 kg (37,664 lb)
Seat BeltSAE J386:JUN1985
Steering SystemISO 5010:2007
Travel Speeds (Runout)
Transmission Gear: Eighth33.5 mph
Transmission Gear: Fifth13.6 mph
Transmission Gear: First3.1 mph
Transmission Gear: Fourth10.1 mph
Transmission Gear: Reverse5.7 mph
Transmission Gear: Second5.5 mph
Transmission Gear: Seventh24.8 mph
Transmission Gear: Sixth18.4 mph
Transmission Gear: Third7.5 mph
General Data
180° Curb-to-Curb Turning Width38.71 ft
Elevator Flight Spacing20.0 in
Fuel Tank Refill Capacity: Scraper201.0 gal
Maximum Depth of Cut10.3 in
Maximum Depth of Spread18.3 in
Maximum Floor Opening4.4 ft
Number of Flights15
Operating Weight (Empty)88061.0 lb
Overall Length45.18 ft
Overall Shipping Height12.37 ft
Overall Width11.71 ft
Rated Load25 038 kg (55,200 lb); 25.1 tonnes (27.6 tons)
Scraper Capacity: Heaped23.0 yd3
Scraper Capacity: Struck18.8 yd3
Tires: Scraper33.25R29**E3
Tires: Tractor Drive33.25R29**E3
Top Speed (Loaded)33.5 mph
Width of Cut10.3 ft
Implement Cycle Times
Bowl Lower3.5 Seconds
Bowl Raise3.0 Seconds
Ejector Extend6.45 Seconds
Ejector Retract9.7 Seconds

• Tractor Serviceability Improvement - The filter bank located at the rear of the engine compartment has undergone improvements for serviceability by raising the filter bank up for easier access.

• Engine Over Speed Protection - 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.

• Advanced Cushion Hitch - With similar technology as the Cat® Advanced Ride Management seat suspension, this software allows the cushion hitch to prevent end stroke by having the ability to predict end stroke events and manage the rate of dampening. The desired result is improved hitch repair, reduced maintenance and improved operator ride in rough conditions.

• High Pressure Steering - 620K 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.

• Load Assist Option - The 623K now is offered with the Load Assist option like the 621K and 627K.

• Draft Arm Overflow Guards - The open bowls now come standard with bowl side overflow guards to help prevent material from flowing over the bowl sides and falling onto the draft arms where material becomes lodged between the bowl side and draft arm resulting in decreased work cycle times.

• Auto Stall - In cold weather conditions the machine will use the Auto Stall feature to help warm up the transmission oil faster resulting in the machine shifting out of torque converter drive (2nd gear) faster than on previous models.

• Differential Lock Engagement Protection (Standard) - This standard feature allows the machine to prevent the operator from engaging the differential lock when damage could occur.

• Cab Improved - The interior of the K Series cabs has improved the operator comfort and visibility by redesigning the dash area and key pad placement.

• Machine Speed Limit - This feature 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 high idle.

• Ground Speed Control - 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. Allowing the engine and transmission to select the correct gear to pull the load in most cases will result in a lower engine load factor and lower fuel burn verses top gear selection.

Standard Equipment

  • Cat C13 ACERT engine with MEUI™
  • Cat engine brake
  • Electric start, 24 Volt
  • Air cleaner, dry type with precleaner
  • Fan, hydraulic
  • Ground level engine shutdown
  • Radiator, aluminum unit core, 9 fins per inch
  • Guard, crankcase
  • Muffler (only for less or non-regulated regions engine arrangement only)
  • 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, wet disc, hydraulic
  • Alternator, 150 Amp
  • Batteries (4), 12V, 1,000 CCA, maintenance free, high output
  • Electrical system, 24V
  • Lighting system: - Headlights, halogen - 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: - Regeneration control (Tier 4 Final/EU Stage IV only) - Parking brake
  • 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 - 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 pin, front
  • Vandalism locks
  • Heater, engine coolant 120V
  • Bowl: - 17.6 m3 (23 yd3), heaped - 13.5 m3 (17.6 yd3), struck
  • Vandalism locks
  • Elevator with 15 flights
  • Hydraulic position sensing cylinders (bowl lift and apron)

Optional Equipment

  • Secondary Steering Arrangement
  • Sequence Assist Arrangement
  • Load Assist
  • Cat Grade Control with Load Assist
  • Camera arrangement - WAVS
  • Steering lock - external
  • Cab beacon
  • Air horn
  • Air horn and beacon
  • Fender, scraper
  • Wiring group
  • HID work lights
  • Cooling, high ambient HRC
  • Cooling, low ambient HRC
  • Cooling, high ambient LRC
  • Cooling, low ambient LRC
  • Year of manufacture plate
  • Film arrangement - U.S. (ANSI)
  • Film arrangement - International (ISO)



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