621H Wheel Tractor-Scraper

Overview
Flywheel Power: Tractor/Scraper
304 kW (407 hp)
Scraper Capacity: Heaped
24 yd3
Top Speed (Loaded)
34 mph

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.

Tractor Engine

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

Scraper Bowl

Scraper Capacity: Heaped
24 yd3
Rated Load
57,600 lb
Heaped Capacity
24 yd3
Maximum Depth of Cut
12 in
Maximum Depth of Spread
21 in
Maximum Ground Clearance at Cutting Edge
23 in
Maximum Hydraulic Penetration Force
130,390 lb
Struck Capacity
17 yd3
Thickness of Cutting Edge
1 in
Width of Cut, Outside Router Bits
124 in
Maximum Apron Closure Force
50,580 lb
Maximum Apron Opening
70 in
Scraper Capacity - Heaped
24 yd³
Rated Load
57,600 lb
Heaped Capacity
24 yd³
Maximum Depth of Cut
12 in
Maximum Depth of Spread
21 in
Maximum Ground Clearance at Cutting Edge
23 in
Maximum Hydraulic Penetration Force
130,390 lb
Struck Capacity
17 yd³
Thickness - Cutting Edge
1 in
Width - Cut - Outside Router Bits
124 in

Transmission

Top Speed (Loaded)
34 mph
1 Forward
3 mph
2 Forward
6 mph
3 Forward
8 mph
4 Forward
10 mph
5 Forward
14 mph
6 Forward
18 mph
7 Forward
25 mph
8 Forward
34 mph
Reverse
6 mph
Top Speed - Loaded
34 mile/h
1 Forward
3 mile/h
2 Forward
6 mile/h
3 Forward
8 mile/h
4 Forward
10 mile/h
5 Forward
14 mile/h
6 Forward
18 mile/h
7 Forward
25 mile/h
8 Forward
34 mile/h
Reverse
6 mile/h

Engine

Max. Power
407 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 in
Displacement
763 in3
Max. Power (All Gears) (ISO 14396)
407 hp
Max. Power Reference Engine Speed
1,700 RPM
Stroke
6 in
Tractor Engine
Cat® C13 ACERT™
Bore
5 in
Displacement
763 in³
Maximum Power - All Gears - ISO 14396
407 HP
Maximum Power Reference Engine Speed
1,700 r/min
Stroke
6 in
Tractor Engine
Cat® C13 ACERT™

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

Bore
5 in
Displacement
763 in3
Max. Power (All Gears) (ISO 14396)
407 hp
Max. Power Reference Engine Speed
1,700 RPM
Stroke
6 in
Tractor Engine
Cat® C13 ACERT™

Service Refill Capacities - Scraper

Fuel Tank
202 gal
Non-Powered Wheel
1 gal
Fuel Tank
202 gal (US)
Non-Powered Wheel
1 gal (US)

Service Refill Capacities - Tractor

Engine Crankcase
9 gal
Windshield Washer Reservoir
1 gal
Transmission
19 gal
Differential
46 gal
Final Drive (per side)
5 gal
Cooling System
17 gal
Hydraulic Reservoir
22 gal
Engine Crankcase
9 gal (US)
Windshield Washer Reservoir
1 gal (US)
Transmission
19 gal (US)
Differential
46 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
11 gal/min
Cushion Hitch Cylinder Bore
6 in
Cushion Hitch Cylinder Stroke
10 in
Scraper Circuit Flow
66 gal/min
Secondary Steering Circuit Flow
10 gal/min
Steering Circuit Flow
62 gal/min
Steering Cylinder Bore
5 in
Steering Cylinder Stroke
44 in
Bowl Cylinder Bore
6 in
Bowl Cylinder Stroke
33 in
Apron Cylinder Bore
6 in
Apron Cylinder Stroke
22 in
Ejector Cylinder Bore
6 in
Ejector Cylinder Stroke
61 in
Push/Pull Bail Cylinder Bore
4 in
Push/Pull Bail Cylinder Stroke
16 in
Cushion Hitch Circuit Flow
11 gal/min
Cushion Hitch Cylinder Bore
6 in
Cushion Hitch Cylinder Stroke
10 in
Scraper Circuit Flow
66 gal/min
Secondary Steering Circuit Flow
10 gal/min
Steering Circuit Flow
62 gal/min
Steering Cylinder - Bore
5 in
Steering Cylinder - Stroke
44 in
Bowl Cylinder Bore
6 in
Bowl Cylinder Stroke
33 in
Apron Cylinder Bore
6 in
Apron Cylinder Stroke
22 in
Ejector Cylinder Bore
6 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
141,141 lb
Push-Pull - Operating Weight - Full Fuel Tanks
82,541 lb
Push-Pull - Shipping Weight - 10% Fuel
81,090 lb
Standard - Loaded, Based on a Rated Load
137,374 lb
Standard - Operating Weight - Full Fuel Tanks
79,774 lb
Standard - Shipping Weight - 10% fuel
78,279 lb

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

Push-Pull - Loaded - Based on a Rated Load
135,597 lb
Push-Pull - Operating Weight - Full Fuel Tanks
81,996 lb
Push-Pull - Shipping Weight - 10% Fuel
80,502 lb
Standard - Loaded, Based on a Rated Load
136,830 lb
Standard - Operating Weight - Full Fuel Tanks
79,230 lb
Standard - Shipping Weight - 10% fuel
77,735 lb

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

Bore
5 in
Displacement
763 in³
Maximum Power - All Gears - ISO 14396
407 HP
Maximum Power Reference Engine Speed
1,700 r/min
Stroke
6 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

  • 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
×