Open Bowl Scrapers:

621K Wheel Tractor-Scraper

Flywheel Power: Tractor/Scraper
304 kW (407 hp)
Scraper Capacity: Heaped
24.0 yd3
Top Speed (Loaded)
33.5 mph
Width - Overall Machine
141.1 in

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.



Product Specs

  • Tractor Engine

  • Flywheel Power: Tractor/Scraper
    304 kW (407 hp)
    Flywheel Power - Tractor/Scraper
    304 kW (407 hp)
  • Scraper Bowl

  • Scraper Capacity: Heaped
    24.0yd3
    Scraper Capacity - Heaped
    24yd³
  • Transmission

  • Top Speed (Loaded)
    33.5mph
    Top Speed - Loaded
    33.5mile/h
  • Dimensions

  • Width - Overall Machine
    141.1in
    Width - Tractor
    133.1in
    Width - Inside of Bowl
    120.0in
    Width - Outside Rear Tires
    128.9in
    Height - Overall Shipping
    158.6in
    Height - Top of Cab
    142.2in
    Ground Clearance - Tractor
    21.9in
    Front of Tractor to Front Axle
    122.8in
    Axle to Vertical Hitch Pin
    21.3in
    Height - Scraper Blade Maximum
    20.5in
    Wheelbase
    314.9in
    Rear Axle to Rear of Machine
    114.1in
    Length - Overall Machine (Standard)
    551.8in
    Width - Overall Machine - Ladder Down
    149.2in
    Width - Rear Tire Centers
    90.2in
    Length - Maximum (Push-Pull)
    613.2in
    Width - Overall Machine
    141.1in
    Width - Tractor
    133.1in
    Width - Inside of Bowl
    120in
    Width - Outside Rear Tires
    128.9in
    Height - Overall Shipping
    158.6in
    Height - Top of Cab
    142.2in
    Ground Clearance - Tractor
    21.9in
    Front of Tractor to Front Axle
    122.8in
    Axle to Vertical Hitch Pin
    21.3in
    Height - Scraper Blade Maximum
    20.5in
    Wheel Base
    314.9in
    Rear Axle - Rear of Machine
    114.1in
    Length - Overall Machine - Standard
    551.8in
    Width - Overall Machine - Ladder Down
    149.2in
    Width - Rear Tire Centers
    90.2in
  • Engine

  • Flywheel Power: Tractor
    407.0hp
    Note
    Cat C13 ACERT engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards.
    Engine Model - Tractor
    Cat C13 ACERT™
    Rated Engine RPM - Tractor
    2000r/min
    Flywheel Power - Tractor
    407HP
    Note
    Cat C13 ACERT engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards.
  • Travel Speeds (Runout)

  • Transmission Gear: Eighth
    33.5mph
    Transmission Gear: Fifth
    13.6mph
    Transmission Gear: First
    3.1mph
    Transmission Gear: Fourth
    10.1mph
    Transmission Gear: Reverse
    5.7mph
    Transmission Gear: Second
    5.5mph
    Transmission Gear: Seventh
    24.8mph
    Transmission Gear: Sixth
    18.4mph
    Transmission Gear: Third
    7.5mph
  • General Data

  • 180° Curb-to-Curb Turning Width
    38.71ft
    Fuel Tank Refill Capacity: Scraper
    201.0gal
    Maximum Depth of Cut
    12.4in
    Maximum Depth of Spread
    21.3in
    Overall Shipping Height
    13.22ft
    Overall Width
    11.71ft
    Rated Load
    26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons)
    Scraper Capacity: Heaped
    24.0yd3
    Scraper Capacity: Struck
    17.1yd3
    Tires: Scraper
    33.25R29**E3
    Tires: Tractor Drive
    33.25R29**E3
    Top Speed (Loaded)
    33.5mph
    Width of Cut
    10.3ft
  • Cab

  • Exterior Sound Level
    The exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A).
    ROPS/FOPS
    Meets SAE and ISO standards
    Exterior Sound Level
    The exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A).
    ROPS/FOPS
    Meets SAE and ISO standards
  • Implement Cycle Times

  • Apron Lower
    3.8Seconds
    Apron Raise
    2.95Seconds
    Bail Lower
    3.2Seconds
    Bail Raise
    1.8Seconds
    Bowl Lower
    3.5Seconds
    Bowl Raise
    3.0Seconds
    Ejector Extend
    5.2Seconds
    Ejector Retract
    6.7Seconds
    Bail Raise
    1.8s
    Bowl Lower
    3.5s
    Bowl Raise
    3s
    Ejector Extend
    5.2s
    Ejector Retract
    6.7s
    Apron Lower
    3.8s
    Apron Raise
    2.95s
    Bail Lower
    3.2s
  • Service Refill Capacities

  • Cooling System
    11.89gal
    Crankcase
    8.08gal
    Diesel Exhaust Fluid
    8.0572gal
    Fuel Tank
    216.09gal
    Hydraulic System
    21.926gal
    Transmission System
    24.76gal
    Cooling System
    11.89gal (US)
    Crankcase
    8.08gal (US)
    Diesel Exhaust Fluid
    8.057gal (US)
    Fuel Tank
    216.09gal (US)
    Hydraulic System
    21.926gal (US)
    Transmission System
    24.76gal (US)
  • Safety Criteria Compliance Standards

  • Brakes
    ISO 3450:1996
    Falling Object Protective Structure (FOPS)
    ISO 3449:2005 Level II
    Reverse Alarm
    ISO 9533:2010
    Rollover Protection Structure (ROPS)
    ISO 3471:2008 for up to 17 084 kg (37,664 lb)
    Seat Belt
    SAE J386:JUN1985
    Steering System
    ISO 5010:2007
    Brakes
    ISO 3450:1996
    Falling Object Protective Structure (FOPS)
    ISO 3449:2005 Level II
    Reverse Alarm
    ISO 9533:2010
    Rollover Protection Structure (ROPS)
    ISO 3471:2008 for up to 17 084 kg (37,664 lb)
    Seat Belt
    SAE J386:JUN1985
    Steering System
    ISO 5010:2007
  • Push-Pull

  • Operating Weight - Empty
    80630lb
    Overall Length - With Bail Down
    51.1ft
  • Non Push-Pull

  • Operating Weight - Empty
    79787lb
    Overall Length
    45.9ft
  • General

  • 180° Curb-to-Curb Turning Width
    38.71ft
    Fuel Tank Refill Capacity - Scraper
    201gal (US)
    Maximum Depth of Cut
    12.4in
    Maximum Depth of Spread
    21.3in
    Overall Shipping Height
    13.22ft
    Overall Width
    11.71ft
    Rated Load
    26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons)
    Scraper Capacity - Heaped
    24yd³
    Scraper Capacity - Struck
    17.1yd³
    Tires - Scraper
    33.25R29**E3
    Tires - Tractor Drive
    33.25R29**E3
    Top Speed - Loaded
    33.5mile/h
    Width - Cut
    10.3ft
  • Travel Speeds - Runout

  • Transmission Gear - Eighth
    33.5mile/h
    Transmission Gear - Fifth
    13.6mile/h
    Transmission Gear - First
    3.1mile/h
    Transmission Gear - Fourth
    10.1mile/h
    Transmission Gear - Reverse
    5.7mile/h
    Transmission Gear - Second
    5.5mile/h
    Transmission Gear - Seventh
    24.8mile/h
    Transmission Gear - Sixth
    18.4mile/h
    Transmission Gear - Third
    7.5mile/h

Equipment

  • Power Train - Tractor
    • 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
  • Power Train - Scraper
    • Braking system: - Primary and secondary, wet disc, hydraulic
  • Electrical - Tractor
    • 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
  • Electrical - Scraper
    • Alarm, backup
    • Lighting system: - Brake lights, LED - Turn signals with hazard function, LED
  • Operator Environment - Tractor
    • 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 - 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
  • Fluids
    • Extended Life Coolant to -37° C (-34° F)
  • Other Standard Equipment - Tractor
    • 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
  • Other Standard Equipment - Scraper
    • Bowl: - 18.4 m3 (24 yd3), heaped - 14.1 m3 (18.4 yd3), struck
    • Vandalism locks
    • Hydraulic position sensing cylinders (bowl lift and apron)
  • Steering Arrangements
    • Secondary Steering Arrangement
  • Integrated Technologies
    • Sequence Assist Arrangement
    • Load Assist
    • Cat Grade Control with Load Assist
  • Other Attachments
    • Camera arrangement - WAVS
    • Steering lock - external
    • Cab beacon
    • Air horn
    • Air horn and beacon
    • Fender, scraper
    • Guard, overflow
    • Wiring group
    • Year of manufacture plate
  • Work Light Attachments
    • HID work lights
  • Ambient Capability Arrangements
    • Cooling, high ambient HRC
    • Cooling, low ambient HRC
    • Cooling, high ambient LRC
    • Cooling, low ambient LRC
  • Service Instructions
    • Film arrangement - U.S. (ANSI)
    • Film arrangement - International (ISO)

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