621K

Heavy Equipment

621K

Scraper Capacity - Heaped
24 yd³ / 18.4 m³
Top Speed - Loaded
33.5 mile/h / 53.9 km/h
Width - Overall Machine
141.1 in / 3585 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.

General
180° Curb-to-Curb Turning Width 38.71 ft / 11.8 m
Fuel Tank Refill Capacity - Scraper 201 gal (US) / 763 l
Maximum Depth of Cut 12.4 in / 315 mm
Maximum Depth of Spread 21.3 in / 540 mm
Overall Shipping Height 13.22 ft / 4.03 m
Overall Width 11.71 ft / 3.57 m
Rated Load 26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons)
Scraper Capacity - Heaped 24 yd³ / 18.4 m³
Scraper Capacity - Struck 17.1 yd³ / 13 m³
Tires - Scraper 33.25R29**E3
Tires - Tractor Drive 33.25R29**E3
Top Speed - Loaded 33.5 mile/h / 53.9 km/h
Width - Cut 10.3 ft / 3.14 m
Engine
Engine Model - Tractor Cat C13 ACERT™
Flywheel Power - Tractor 407 HP / 304 kW
Note Cat C13 ACERT engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards.
Rated Engine RPM - Tractor 2000 r/min
Tractor Engine
Flywheel Power - Tractor/Scraper 304 kW (407 hp)
Scraper Bowl
Scraper Capacity - Heaped 24 yd³ / 18.4 m³
Transmission
Top Speed - Loaded 33.5 mile/h / 53.9 km/h
Service Refill Capacities
Cooling System 11.89 gal (US) / 45 l
Crankcase 8.08 gal (US) / 30.58 l
Diesel Exhaust Fluid 8.057 gal (US) / 30.5 l
Fuel Tank 216.09 gal (US) / 818 l
Hydraulic System 21.926 gal (US) / 83 l
Transmission System 24.76 gal (US) / 93 l
Dimensions
Width - Overall Machine 141.1 in / 3585 mm
Width - Tractor 133.1 in / 3381 mm
Width - Inside of Bowl 120 in / 3048 mm
Width - Outside Rear Tires 128.9 in / 3275 mm
Height - Overall Shipping 158.6 in / 4029 mm
Height - Top of Cab 142.2 in / 3612 mm
Ground Clearance - Tractor 21.9 in / 557 mm
Front of Tractor to Front Axle 122.8 in / 3119 mm
Axle to Vertical Hitch Pin 21.3 in / 540 mm
Height - Scraper Blade Maximum 20.5 in / 520 mm
Wheel Base 314.9 in / 7998 mm
Rear Axle - Rear of Machine 114.1 in / 2898 mm
Length - Maximum (Push-Pull) 613.2 in / 15576 mm
Length - Overall Machine - Standard 551.8 in / 14015 mm
Width - Overall Machine - Ladder Down 149.2 in / 3790 mm
Width - Rear Tire Centers 90.2 in / 2290 mm
Non Push-Pull
Operating Weight - Empty 79787 lb / 36185 kg
Overall Length 45.9 ft / 14.02 m
Push-Pull
Operating Weight - Empty 80630 lb / 36567 kg
Overall Length - With Bail Down 51.1 ft / 15.58 m
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
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
Travel Speeds - Runout
Transmission Gear - Eighth 33.5 mile/h / 53.9 km/h
Transmission Gear - Fifth 13.6 mile/h / 21.9 km/h
Transmission Gear - First 3.1 mile/h / 5 km/h
Transmission Gear - Fourth 10.1 mile/h / 16.3 km/h
Transmission Gear - Reverse 5.7 mile/h / 9.2 km/h
Transmission Gear - Second 5.5 mile/h / 8.9 km/h
Transmission Gear - Seventh 24.8 mile/h / 39.9 km/h
Transmission Gear - Sixth 18.4 mile/h / 29.6 km/h
Transmission Gear - Third 7.5 mile/h / 12.1 km/h
Implement Cycle Times
Apron Lower 3.8 s
Apron Raise 2.95 s
Bail Lower 3.2 s
Bail Raise 1.8 s
Bowl Lower 3.5 s
Bowl Raise 3 s
Ejector Extend 5.2 s
Ejector Retract 6.7 s

Standard 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)

Optional Equipment

  • 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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