Open Bowl Scrapers:

621H Wheel Tractor-Scraper

Flywheel Power: Tractor/Scraper
304 kW (407 hp)
Scraper Capacity: Heaped
24.0 yd3
Top Speed (Loaded)
33.5 mph
Rated Load
57600.0 lb

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.



Benefits & Features

Product Specs

  • Tractor Engine

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

  • Scraper Capacity: Heaped
    24.0yd3
    Rated Load
    57600.0lb
    Heaped Capacity
    24.0yd3
    Maximum Apron Closure Force
    50580.0lb
    Maximum Apron Opening
    69.6in
    Maximum Depth of Cut
    12.4in
    Maximum Depth of Spread
    21.3in
    Maximum Ground Clearance at Cutting Edge
    23.4in
    Maximum Hydraulic Penetration Force
    130390.0lb
    Struck Capacity
    17.1yd3
    Thickness of Cutting Edge
    0.9in
    Width of Cut, Outside Router Bits
    123.5in
  • Transmission

  • Top Speed (Loaded)
    33.5mph
    1 Forward
    3.1mph
    2 Forward
    5.5mph
    3 Forward
    7.5mph
    4 Forward
    10.1mph
    5 Forward
    13.6mph
    6 Forward
    18.4mph
    7 Forward
    24.8mph
    8 Forward
    33.5mph
    Reverse
    5.7mph
  • Engine

  • Max. Power
    407.0hp
    Tractor
    Cat® C13 ACERT™
  • Tractor Engine - U.S. EPA Tier 4 Interim/EU Stage IIIB

  • Bore
    5.1in
    Displacement
    763.0in3
    Max. Power (All Gears) (ISO 14396)
    407.0hp
    Max. Power Reference Engine Speed
    1700.0RPM
    Stroke
    6.2in
    Tractor Engine
    Cat® C13 ACERT™
  • Tractor Engine - Prior U.S. EPA Tier 3/EU Stage IIIA configuration*

  • Bore
    5.1in
    Displacement
    763.0in3
    Max. Power (All Gears) (ISO 14396)
    407.0hp
    Max. Power Reference Engine Speed
    1700.0RPM
    Stroke
    6.2in
    Tractor Engine
    Cat® C13 ACERT™
  • Service Refill Capacities - Scraper

  • Fuel Tank
    201.6gal
    Non-Powered Wheel
    1.1gal
  • Service Refill Capacities - Tractor

  • Engine Crankcase
    8.75gal
    Windshield Washer Reservoir
    1.3gal
    Transmission
    18.5gal
    Differential
    45.8gal
    Final Drive (per side)
    5.0gal
    Cooling System
    17.0gal
    Hydraulic Reservoir
    22.0gal
  • Weights - Machines meeting U.S. EPA Tier 4 Interim/EU Stage IIIB emission standards

  • Push-Pull - Loaded, based on a rated load
    141141.0lb
    Push-Pull - Operating Weight - full fuel tanks
    82541.0lb
    Push-Pull - Shipping Weight - 10% fuel
    81090.0lb
    Standard - Loaded, based on a rated load
    137374.0lb
    Standard - Operating Weight - full fuel tanks
    79774.0lb
    Standard - Shipping Weight - 10% fuel
    78279.0lb
  • Standards

  • Standards
    Standards
  • Weights - Machines achieving prior U.S. EPA Tier 3/EU Stage IIIA emission levels

  • Push-Pull - Loaded, based on a rated load
    135597.0lb
    Push-Pull - Operating Weight - full fuel tanks
    81996.0lb
    Push-Pull - Shipping Weight - 10% fuel
    80502.0lb
    Standard - Loaded, based on a rated load
    136830.0lb
    Standard - Operating Weight - full fuel tanks
    79230.0lb
    Standard - Shipping Weight - 10% fuel
    77735.0lb
  • Hydraulics

  • Cushion Hitch Circuit Flow
    10.6gal/min
    Cushion Hitch Cylinder Bore
    5.5in
    Cushion Hitch Cylinder Stroke
    9.9in
    Push/Pull Bail Cylinder Bore
    3.5in
    Push/Pull Bail Cylinder Stroke
    16.3in
    Scraper Circuit Flow
    66.0gal/min
    Secondary Steering Circuit Flow
    10.3gal/min
    Steering Circuit Flow
    61.8gal/min
    Steering Cylinder Bore
    5.0in
    Steering Cylinder Stroke
    44.4in
    Bowl Cylinder Bore
    5.5in
    Bowl Cylinder Stroke
    33.3in
    Apron Cylinder Bore
    5.9in
    Apron Cylinder Stroke
    22.2in
    Ejector Cylinder Bore
    5.5in
    Ejector Cylinder Stroke
    61.0in
  • Steering

  • Steering Angle - Right
    85º
    Steering Angle - Left
    82º

Equipment

  • Power Train - Tractor
    • C13 ACERT engine with MEUI
    • Cat Engine Brake
    • Electric start, 24 Volt
    • Air cleaner, dry type with precleaner
    • Fan, hydraulic
    • Diesel Particulate Filter (DPF) aftertreatment (for engine meeting U.S. EPA Tier 4 Interim/EU Stage IIIB emission standards)
    • Ground level engine shutdown
    • Radiator, aluminum unit core
    • Guard, crankcase
    • Muffler (for engines achieving U.S. EPA Tier 3/EU Stage IIIA emission levels)
    • Starting aid, ether
    • Braking system: Primary and Secondary, wet disc, hydraulic Parking, hydraulically-released, spring-applied
    • Throttle Lock
    • Transmission: 8-speed planetary powershift ECPC Control APECS software Programmable top gear selection Transmission hold Differential lock Guard, power train
  • Power Train - Scraper
    • Braking system: Primary and Secondary, wet disc, hydraulic Parking, hydraulically-released, spring-applied
    • 4-speed (torque converter drive) transmission, planetary powershift
  • Electrical - Tractor
    • Alternator, 150 Amp
    • Batteries (4), 12 Volt, 1,000 CCA, maintenance free, high output
    • Electrical system, 24V
    • Lighting system: Headlights, halogen Turn signals with hazard function LED Floodlights, halogen (2), cutting edge (1), bowl (2), 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, 12V
    • ROPS/FOPS cab, pressurized
    • Keypad switches
    • Safety tab rocker switches
    • Parking brake
    • Seat belt, static two-piece
    • Seat, air suspension, Comfort Series 3, rotates 30 degrees
    • Steering wheel, tilt, telescoping, padded
    • Storage in dash if WAVS or Cat Grade Control is not equipped
    • 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 temp Engine oil temp Hydraulic oil temp DPF temp Fuel level Park brake Implement lockout Brake system Regeneration required Throttle lock System voltage Secondary steering Bail down Differential lock Apron float Transmission hold Cushion hitch High beam lights Action lamp Engine speed, rpm Gear selection out DPF fill levels
  • Fluids
    • Extended Life Coolant to -37° C (-34° F)
  • Other Standard Equipment - Tractor
    • Cushion hitch
    • Accumulators (cushion hitch) with Canadian Registration Number (CRN)
    • Fast oil change
    • Fenders, non metallic
    • Heater, engine coolant 120V
    • Tow pin, front
    • Vandalism locks
  • Other Standard Equipment - Scraper
    • Quick drop bowl valve
    • Vandalism locks
    • Extended push block
  • Push-pull arrangement
  • Sequence Assist
  • Load Assist
  • Cat Grade Control
  • Secondary Steering
  • Fender extension, scraper
  • Powered access ladder
  • Cat Active Ride Management (ARM) seat
  • Fast fuel fill
  • HID Work lights
  • Low ambient fluids -51° C (-61° F)
  • Work Area Vision System (WAVS) - three cameras showing right side, cutting edge and directly behind machine, display in cab
  • External steering lock
  • Cab precleaner
  • Cab rotating beacon
  • Air horn

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