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621H 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.

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SPECIFICATION SUMMARY
  • 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

PRICE (USD)
Call 800-637-5000 for rate information

Tractor Engine

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

Scraper Bowl

  • Scraper Capacity: Heaped
    24.0 yd3
  • Rated Load
    57600.0 lb
  • Heaped Capacity
    24.0 yd3
  • Maximum Depth of Cut
    12.4 in
  • Maximum Depth of Spread
    21.3 in
  • Maximum Ground Clearance at Cutting Edge
    23.4 in
  • Maximum Hydraulic Penetration Force
    130390.0 lb
  • Struck Capacity
    17.1 yd3
  • Thickness of Cutting Edge
    0.9 in
  • Width of Cut, Outside Router Bits
    123.5 in
  • Maximum Apron Closure Force
    50580 lb
  • Maximum Apron Opening
    69.6 in
  • Scraper Capacity - Heaped
    24 yd³
  • Rated Load
    57600 lb
  • Heaped Capacity
    24 yd³
  • Maximum Depth of Cut
    12.4 in
  • Maximum Depth of Spread
    21.3 in
  • Maximum Ground Clearance at Cutting Edge
    23.4 in
  • Maximum Hydraulic Penetration Force
    130390 lb
  • Struck Capacity
    17.1 yd³
  • Thickness - Cutting Edge
    0.9 in
  • Width - Cut - Outside Router Bits
    123.5 in

Transmission

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

Engine

  • Max. Power
    407.0 hp
  • Tractor
    Cat® C13 ACERT™
  • Maximum Power
    407 HP
  • Tractor
    Cat® C13 ACERT™

Tractor Engine - U.S. EPA Tier 4 Interim/EU Stage IIIB

  • Bore
    5.1 in
  • Displacement
    763.0 in3
  • Max. Power (All Gears) (ISO 14396)
    407.0 hp
  • Max. Power Reference Engine Speed
    1700.0 RPM
  • Stroke
    6.2 in
  • Tractor Engine
    Cat® C13 ACERT™
  • Bore
    5.1 in
  • Displacement
    763 in³
  • Maximum Power - All Gears - ISO 14396
    407 HP
  • Maximum Power Reference Engine Speed
    1700 r/min
  • Stroke
    6.2 in
  • Tractor Engine
    Cat® C13 ACERT™

Tractor Engine - Prior U.S. EPA Tier 3/EU Stage IIIA configuration*

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

Service Refill Capacities - Scraper

  • Fuel Tank
    201.6 gal
  • Non-Powered Wheel
    1.1 gal
  • Fuel Tank
    201.6 gal (US)
  • Non-Powered Wheel
    1.1 gal (US)

Service Refill Capacities - Tractor

  • Engine Crankcase
    8.75 gal
  • Windshield Washer Reservoir
    1.3 gal
  • Transmission
    18.5 gal
  • Differential
    45.8 gal
  • Final Drive (per side)
    5.0 gal
  • Cooling System
    17.0 gal
  • Hydraulic Reservoir
    22.0 gal
  • Engine Crankcase
    8.75 gal (US)
  • Windshield Washer Reservoir
    1.3 gal (US)
  • Transmission
    18.5 gal (US)
  • Differential
    45.8 gal (US)
  • Final Drive - Each
    5 gal (US)
  • Cooling System
    17 gal (US)
  • Hydraulic Reservoir
    22 gal (US)

Standards

  • Standards
    Standards
  • Standards
    Standards

Hydraulics

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

Steering

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

Weights - Machines Meeting U.S. EPA Tier 4 Interim/EU Stage IIIB Emission Standards

  • Push-Pull - Loaded - Based on a Rated Load
    141141 lb
  • Push-Pull - Operating Weight - Full Fuel Tanks
    82541 lb
  • Push-Pull - Shipping Weight - 10% Fuel
    81090 lb
  • Standard - Loaded, Based on a Rated Load
    137374 lb
  • Standard - Operating Weight - Full Fuel Tanks
    79774 lb
  • Standard - Shipping Weight - 10% fuel
    78279 lb

Weights - Machines Achieving Prior U.S. EPA Tier 3/EU Stage IIIA Emission Levels

  • Push-Pull - Loaded - Based on a Rated Load
    135597 lb
  • Push-Pull - Operating Weight - Full Fuel Tanks
    81996 lb
  • Push-Pull - Shipping Weight - 10% Fuel
    80502 lb
  • Standard - Loaded, Based on a Rated Load
    136830 lb
  • Standard - Operating Weight - Full Fuel Tanks
    79230 lb
  • Standard - Shipping Weight - 10% fuel
    77735 lb

Tractor Engine - Prior U.S. EPA Tier 3/EU Stage IIIA Configuration*

  • Bore
    5.1 in
  • Displacement
    763 in³
  • Maximum Power - All Gears - ISO 14396
    407 HP
  • Maximum Power Reference Engine Speed
    1700 r/min
  • Stroke
    6.2 in
  • Tractor Engine
    Cat® C13 ACERT™

Operator's Station

Operator Comfort

Power Train - Engine

Power Train - Transmission

Structures

Scraper Bowl

Loading Options

Integrated Technologies

Complete Customer Support

Safety

Standard 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

Optional Equipment: