623

623 Wheel Tractor-Scraper

623

DESCRIPTION

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.

Wheel Tractor Scraper CAT® K Series

Wheel Tractor-Scraper K Series Operator Testimonial

BE MORE PRODUCTIVE

  • Up to 7% additional elevator torque.
  • Up to 50% improvement in chain life.
  • Enhanced elevator drive sprocket for reduced chain wear.Improved scissor-style chain tension system for decreased
    sprocket wear, chain wear, and chain jumping.
  • Cat C13 engine offers increased power density with a combination
    of proven electronic, fuel, and air systems.
  • Use Ground Speed Control to set the desired top speed, and the
    machine will find the gear that works best for the engine and the
    transmission, providing a lower fuel burn.
    • The Machine Speed Limit feature replaces Top Gear Selection.
  • Advanced Productivity Electronic Control System (APECS) allows
    the engine and transmission to communicate on a high level. This
    communication allows the machine to better utilize the power
    and torque the engine is producing. The net result is moving more
    material.
  • Auto-Stall assists in quickly bringing the transmission to an
    operating temperature at start-up when the machine is working in a
    cold climate region.
  • Cat Payload Estimator for scrapers is an earthmoving solution for
    optimal payload and jobsite efficiency. Payload Estimator achieves on-the-go weighing by using bowl lift cylinder pressure during the loaded haul segment. Payload Estimator is optimized to be used with Sequence Assist, which provides increased productivity with less operator effort.

BE MORE PRODUCTIVE
WORK IN COMFORT

WORK IN COMFORT

  • Reduce up to 14 individual operator commands per cycle with
    Sequence Assist (optional attachment).
  • Steer with less effort using the newly designed high-pressure
    steering system.
  • Enjoy interior improvements and a more ergonomic work
    environment with a 21% larger cab than the G Series cab.
  • Intuitive, ergonomic controls keep operators focused on their work.
  • Maintain desired cab temperature with automatic temperature
    control.

DESIGNED FOR SAFETY

  • Brakes are hydraulically actuated wet disc brakes for the tractor
    and scraper.
  • Get in and out of the cab easier with the new powered access
    ladder system (optional attachment).
  • Enhance an operator’s awareness of site surroundings with the
    optional Work Area Vision System (WAVS).
  • Seat belt indicator provides visual and audible alerts when the seat
    belt is not in use.
  • Ground level, engine shut-off switch stops all fuel to the engine
    when activated and shuts down the machine.
  • Advanced Cushion Hitch allows the cushion hitch to prevent
    end stroke by having the ability to predict end stroke events
    and manage the rate of dampening, resulting in reduced hitch
    maintenance and improved operator ride in rough conditions.

DESIGNED FOR SAFETY
EASY TO OPERATE

EASY TO OPERATE

  • The spacious cab features easy, intuitive controls and excellent
    visibility. The cab provides a comfortable working environment for
    all-day operation.
  • Cat Advanced Ride Management (ARM) seat suspension reduces
    end stroke movement of the load cylinder for a smoother ride.
  • Engine overspeed protection will automatically engage with no
    operator input when the machine is in eighth gear. The machine
    will assist in slowing the machine speed by canceling the throttle
    command and engaging the engine compression brake.

INTEGRATED CAT TECHNOLOGIES

  • Monitor, manage, and enhance jobsite operations.
  • Hit target grade faster and more accurately with Cat GRADE technologies. Finish jobs in fewer passes and with less operator effort, saving you time and helping to increase profit.
  • Product Link™ collects machine data that can be viewed online through web and mobile applications (optional attachment).
  • Access information anytime, anywhere with Vision Link®– use it to make informed decisions that boost productivity, lower costs, simplify maintenance, and improve safety and security on your jobsite.
  • Shorten the learning curve for inexperienced operators with Load Assist (optional attachment).

INTEGRATED CAT TECHNOLOGIES
EXECUTE EFFICIENCY

EXECUTE EFFICIENCY

  • The new tractor hydraulic on-demand fan helps assist in lower fuel consumption.
  • The Cat C13 tractor engine emits equivalent to U.S. EPA Tier 2 and EU Stage II and U.S. EPA Tier 3 and EU Stage IIIA, contributing to lower fuel .
  • Using draft-arm overflow guards diverts material away from the bowl, preventing material from getting caught between the draft arms and the bowl sides.
  • Cat Grade Control (optional attachment) intelligently ensures the machine does not cut below grade in a cut area or overfill in the fill area.

  • Standard Equipment
  • Optional Equipment
  • Specs
  • Docs

Standard Equipment

  • NOTE
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • POWER TRAIN - TRACTOR
    • Cat C13
    • Cat engine brake
    • Electric start, 24 Volt
    • Air cleaner, dry type with precleaner
    • Fan, hydraulic
    • Ground level engine shutdown
    • Radiator, aluminum unit core, 9 fins per inch
    • Guard, crankcase
    • Muffler (only for less or non-regulated regions engine arrangement only)
    • Starting aid, ether
  • BRAKING SYSTEM
    • Primary and secondary, wet disc, hydraulic
    • Parking , hydraulic released, spring applied
    • Primary and secondary, wet disc, hydraulic
    • Throttle lock
  • TRANSMISSION
    • Guard, power train
    • Programmable top gear selection
    • Differential lock
    • Transmission hold
    • APECS software
    • ECPC control
    • Ground speed control
    • 8-speed planetary power shift
    • Machine speed limit
    • Differential lock protection
    • Standard tire spin reduction
  • ELECTRICAL - TRACTOR
    • Alternator, 150 Amp
    • Batteries (4), 12V, 1,000 CCA, maintenance free, high output
    • Electrical system, 24V
    • Starting/charging receptacle
  • LIGHTING SYSTEM - TRACTOR
    • Headlights, halogen
    • LED Floodlights
    • Turn Signals with hazard Function
    • Cutting Edge (2)
    • Bowl (1)
    • Halogen sdie vision (2)
  • ELECTRICAL - SCRAPER
    • Alarm, backup
  • LIGHTING SYSTEM - SCRAPER
    • Brake lights, LED
    • Trun 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
    • ROPS/FOPS cab, pressurized
    • Seat belt, static two-piece
    • Seat, Cat Advanced Ride Management (ARM), Cat Comfort Series 3, rotates 30 degrees
    • Steering wheel, tilt, telescoping, padded
    • Windows, right side emergency egress
    • Windows, sliding
    • Windows, laminated, zipped in
    • Windshield wipers, front and rear windows, includes washers
    • Door lock
    • Messenger Display
  • KEYPAD SWITCHES
    • Hazard lights
    • Wipers/washers
    • Work lights on/off
    • Retarding level select
    • Information mode on Messenger Display
    • Throttle lock
  • SAFETY TAB ROCKER SWITCHES
    • Parking Brake
    • Regeneration control
  • GAUGES, WARNINGS INCLUDE:
    • Hydraulic oil temperature
    • Ejector auto
    • Engine oil temperature
    • Regeneration required
    • Brake system
    • High beam lights
    • Bail down
    • Transmission hold
    • Engine speed, rpm
    • Cushion hitch
    • Gear selection
    • Implement lockout
    • Differential lock (1)
    • Coolant temperature
    • Park brake
    • Apron float
    • Throttle lock
    • Fuel level
    • System voltage
    • Action lamp
    • Secondary steering
  • FLUIDS
    • Extended Life Coolant to -37� C (-34� F)
  • OTHER STANDARD EQUIPMENT - TRACTOR
    • Advanced cushion hitch
    • Accumulators (cushion hitch) with Canadian Registration Number (CRN)
    • Fast oil change
    • Fenders, non-metallic
    • Heater, engine coolant 120V
    • Rims (2)
    • Tow pin, front
    • Vandalism locks
    • Heater, engine coolant 120V
  • BOWL
    • 13.5 m� (17.6 yd�), struck
    • 17.6 m³ (23 yd³), heaped
  • OTHER STANDARD EQUIPMENT - SCRAPER
    • Vandalism locks
    • Elevator with 15 flights
    • Hydraulic position sensing cylinders (bowl lift and apron)

Optional Equipment

Specs

Overview

Long Name:
623 Wheel Tractor-Scraper
Name:
623
Brand:
Caterpillar
Status:
Current

General

Overall Length
45.18 ft / 13.77 m
Maximum Depth of Spread
18.3 in / 465 mm
Top Speed - Loaded
33.5 mile/h / 53.9 km/h
Fuel Tank Refill Capacity - Scraper
201 gal (US) / 763 l
Width - Cut
10.3 ft / 3.14 m
Overall Width
11.71 ft / 3.57 m
Number of Flights
15
Tires - Scraper
33.25R29**E3
Maximum Floor Opening
4.4 ft / 1.34 m
Maximum Depth of Cut
10.3 in / 262 mm
Elevator Flight Spacing
20 in / 520 mm
Rated Load
25 038 kg (55,200 lb); 25.1 tonnes (27.6 tons)
Overall Shipping Height
12.37 ft / 3.77 m
Scraper Capacity - Struck
18.8 yd³ / 14.4 m³
Tires - Tractor Drive
33.25R29**E3
Scraper Capacity - Heaped
23 yd³ / 17.6 m³
180° Curb-to-Curb Turning Width
38.71 ft / 11.8 m
Operating Weight - Empty
88061 lb / 39937 kg

Engine

Flywheel Power - Tractor/Scraper
304 kW (407 hp)
Rated Engine RPM
2000 r/min / 2000 r/min
Engine Model
Cat C13
Flywheel Power - Tractor
407 HP / 304 kW
Note
C13 engine emits equivalent to U.S. EPA Tier 2/EU Stage II or U.S. EPA Tier 3/EU Stage III.

Transmission

Top Speed - Loaded
33.5 mile/h / 53.9 km/h

Scraper Bowl

Scraper Capacity - Heaped
23 yd³ / 17.6 m³

Service Refill Capacities

Fuel Tank
216.09 gal (US) / 818 l
Crankcase
8.08 gal (US) / 30.58 l
Cooling System
11.89 gal (US) / 45 l
Transmission System
24.76 gal (US) / 93 l
Hydraulic System
21.926 gal (US) / 83 l

Dimensions

Height - Overall Shipping
158.9 in / 4037 mm
Length - Overall Machine
542 in / 13767 mm
Width - Overall Machine
141.1 in / 3585 mm
Height - Top of Cab
142.6 in / 3621 mm
Height - Scraper Blade Maximum
20.5 in / 520 mm
Width - Tractor
133.1 in / 3381 mm
Width - Inside of Bowl
120 in / 3048 mm
Width - Outside Rear Tires
128.9 in / 3275 mm
Front of Tractor to Front Axle
122.8 in / 3119 mm
Wheel Base
329.5 in / 8370 mm
Rear Axle - Rear of Machine
89.7 in / 2278 mm
Ground Clearance - Tractor
21.9 in / 557 mm
Height - Top of Elevator
148.3 in / 3768 mm
Width - Overall Machine - Ladder Down
149.2 in / 3790 mm
Width - Rear Tire Centers
90.2 in / 2290 mm
Axle to Vertical Hitch Pin
17 in / 432 mm

Cab

Exterior Sound Level
The exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A).
ROPS/FOPS
Meets ISO standards

Safety Criteria Compliance Standards

Falling Object Protective Structure (FOPS)
ISO 3449:2005 Level II
Reverse Alarm
ISO 9533:2010
Brakes
ISO 3450:2011
Seat Belt
SAE J386:JUN1985
Rollover Protection Structure (ROPS)
ISO 3471:2008 for up to 17 084 kg (37,664 lb)
Steering System
ISO 5010:2007

Travel Speeds - Runout

Transmission Gear - Third
7.5 mile/h / 12.1 km/h
Transmission Gear - Fifth
13.6 mile/h / 21.9 km/h
Transmission Gear - Sixth
18.4 mile/h / 29.6 km/h
Transmission Gear - Seventh
24.8 mile/h / 39.9 km/h
Transmission Gear - First
3.1 mile/h / 5 km/h
Transmission Gear - Fourth
10.1 mile/h / 16.3 km/h
Transmission Gear - Reverse
5.7 mile/h / 9.2 km/h
Transmission Gear - Eighth
33.5 mile/h / 53.9 km/h
Transmission Gear - Second
5.5 mile/h / 8.9 km/h

Implement Cycle Times

Ejector Extend
6.45 s / 6.45 s
Bowl Lower
3.5 s / 3.5 s
Bowl Raise
3 s / 3 s
Ejector Retract
9.7 s / 9.7 s