621H Wheel Tractor-Scraper

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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 ...
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Tractor Engine

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

Scraper Bowl

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

Transmission

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

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

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

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

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

Standards

Standards
Standards

Service Refill Capacities - Scraper

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

Service Refill Capacities - Tractor

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

Hydraulics

Steering Cylinder - Stroke
44.4in
Steering Cylinder - Bore
5in
Steering Circuit Flow
61.8gal/min
Secondary Steering Circuit Flow
10.3gal/min
Scraper Circuit Flow
66gal/min
Cushion Hitch Cylinder Stroke
9.9in
Cushion Hitch Cylinder Bore
5.5in
Cushion Hitch Circuit Flow
10.6gal/min
Push/Pull Bail Cylinder Bore
3.5in
Push/Pull Bail Cylinder Stroke
16.3in
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
61in

Engine

Tractor
Cat® C13 ACERT™
Maximum Power
407HP

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

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

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

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

Steering

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

Standard Equipment: