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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.

Engine

Units:
Max. Power 407.0 hp 304.0 kW Less
Tractor Cat® C13 ACERT™ Cat® C13 ACERT™ Less

Tractor Engine

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

Scraper Bowl

Scraper Capacity: Heaped 24.0 yd3 18.3 m3 Less
Rated Load 57600.0 lb 26127.0 kg Less
Heaped Capacity 24.0 yd3 18.3 m3 Less
Maximum Apron Closure Force 50580.0 lb 225.0 kN Less
Maximum Apron Opening 69.6 in 1767.0 mm Less
Maximum Depth of Cut 12.4 in 315.0 mm Less
Maximum Depth of Spread 21.3 in 540.0 mm Less
Maximum Ground Clearance at Cutting Edge 23.4 in 594.0 mm Less
Maximum Hydraulic Penetration Force 130390.0 lb 580.0 kN Less
Struck Capacity 17.1 yd3 13.0 m3 Less
Thickness of Cutting Edge 0.9 in 22.0 mm Less
Width of Cut, Outside Router Bits 123.5 in 3136.0 mm Less

Transmission

Top Speed (Loaded) 33.5 mph 53.9 km/h Less
1 Forward 3.1 mph 5.0 km/h Less
2 Forward 5.5 mph 8.9 km/h Less
3 Forward 7.5 mph 12.1 km/h Less
4 Forward 10.1 mph 16.3 km/h Less
5 Forward 13.6 mph 21.9 km/h Less
6 Forward 18.4 mph 29.6 km/h Less
7 Forward 24.8 mph 39.9 km/h Less
8 Forward 33.5 mph 53.9 km/h Less
Reverse 5.7 mph 9.2 km/h Less

Hydraulics

Cushion Hitch Circuit Flow 10.6 gal/min 40.1 L/min Less
Cushion Hitch Cylinder Bore 5.5 in 140.0 mm Less
Cushion Hitch Cylinder Stroke 9.9 in 251.0 mm Less
Push/Pull Bail Cylinder Bore 3.5 in 90.0 mm Less
Push/Pull Bail Cylinder Stroke 16.3 in 415.0 mm Less
Scraper Circuit Flow 66.0 gal/min 250.0 L/min Less
Secondary Steering Circuit Flow 10.3 gal/min 39.0 L/min Less
Steering Circuit Flow 61.8 gal/min 234.0 L/min Less
Steering Cylinder Bore 5.0 in 127.0 mm Less
Steering Cylinder Stroke 44.4 in 1128.0 mm Less
Bowl Cylinder Bore 5.5 in 140.0 mm Less
Bowl Cylinder Stroke 33.3 in 845.0 mm Less
Apron Cylinder Bore 5.9 in 150.0 mm Less
Apron Cylinder Stroke 22.2 in 565.0 mm Less
Ejector Cylinder Bore 5.5 in 140.0 mm Less
Ejector Cylinder Stroke 61.0 in 1550.0 mm Less

Steering

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

Service Refill Capacities - Tractor

Engine Crankcase 8.75 gal 33.0 L Less
Windshield Washer Reservoir 1.3 gal 5.0 L Less
Transmission 18.5 gal 70.0 L Less
Differential 45.8 gal 173.0 L Less
Final Drive (per side) 5.0 gal 19.0 L Less
Cooling System 17.0 gal 64.0 L Less
Hydraulic Reservoir 22.0 gal 83.0 L Less

Service Refill Capacities - Scraper

Fuel Tank 201.6 gal 763.0 L Less
Non-Powered Wheel 1.1 gal 4.0 L Less

Standards

Standards Standards Standards Less

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

Bore 5.1 in 130.0 mm Less
Displacement 763.0 in3 12.5 L Less
Max. Power (All Gears) (ISO 14396) 407.0 hp 304.0 kW Less
Max. Power Reference Engine Speed 1700.0 RPM 1700.0 RPM Less
Stroke 6.2 in 157.0 mm Less
Tractor Engine Cat® C13 ACERT™ Cat® C13 ACERT™ Less

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

Bore 5.1 in 130.0 mm Less
Displacement 763.0 in3 12.5 L Less
Max. Power (All Gears) (ISO 14396) 407.0 hp 304.0 kW Less
Max. Power Reference Engine Speed 1700.0 RPM 1700.0 RPM Less
Stroke 6.2 in 157.0 mm Less
Tractor Engine Cat® C13 ACERT™ Cat® C13 ACERT™ Less

Weights - Machines meeting U.S. EPA Tier 4 Interim/EU Stage IIIB emission standards

Push-Pull - Loaded, based on a rated load 141141.0 lb 63567.0 kg Less
Push-Pull - Operating Weight - full fuel tanks 82541.0 lb 37440.0 kg Less
Push-Pull - Shipping Weight - 10% fuel 81090.0 lb 36782.0 kg Less
Standard - Loaded, based on a rated load 137374.0 lb 62312.0 kg Less
Standard - Operating Weight - full fuel tanks 79774.0 lb 36185.0 kg Less
Standard - Shipping Weight - 10% fuel 78279.0 lb 35507.0 kg Less

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

Push-Pull - Loaded, based on a rated load 135597.0 lb 63320.0 kg Less
Push-Pull - Operating Weight - full fuel tanks 81996.0 lb 37193.0 kg Less
Push-Pull - Shipping Weight - 10% fuel 80502.0 lb 36515.0 kg Less
Standard - Loaded, based on a rated load 136830.0 lb 62065.0 kg Less
Standard - Operating Weight - full fuel tanks 79230.0 lb 35938.0 kg Less
Standard - Shipping Weight - 10% fuel 77735.0 lb 35260.0 kg Less

Operator’s Station

Ergonomically designed for all-day comfort, control and productivity.


Operator Comfort

High productivity from a comfortable, confident operator.


Power Train - Engine

The Cat® C13 ACERT™ engine are built for power, reliability and efficiency.


Power Train - Transmission

More power to the ground for greater productivity.


Structures

Superior design and construction delivers long term durability.


Scraper Bowl

Caterpillar designed and built for rugged performance and reliability.


Loading Options

Flexible loading options to adapt to changing job site conditions.


Integrated Technologies

Technology options to improve operator comfort and increase productivity.


Complete Customer Support

Cat® dealer services help you operate longer with lower costs.


Safety

Safety is an integral part of all machine and system designs.


621H 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

621H Optional Equipment

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

Cat® Dealer Service

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Contact your local dealer
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