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621H Wheel Tractor-Scraper

621H Wheel Tractor-Scraper

At a Glance

Flywheel Power - Tractor/Scraper
304 kW (407 hp)
Scraper Capacity - Heaped
24 yd³
Top Speed - Loaded
33.5 mile/h
Rated Load
57600 lb
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Overview

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

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

Scraper Bowl

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

Transmission

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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

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

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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

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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

Hydraulics

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

Engine

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Maximum Power 407HP
Tractor Cat® C13 ACERT™

Service Refill Capacities - Tractor

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

Service Refill Capacities - Scraper

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

Standards

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Standards Standards

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

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

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

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

Steering

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