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CAT<sup>®</sup> 621K

Wheel tractor scrapers 621K

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Key Information

Flywheel Power: Tractor/Scraper

304 kW

Scraper capacity - struck

18.4 m³

Maximum speed, loaded

53.9 km/h

Overview

Redefines Your Profitability Potential

Cat wheeled motor scrapers are characterized by fast cycle times thanks to fast loading, high travel speeds, and the ability to load and dump on the fly, for consistent high productivity and the best cost per tonne.

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Monday to Friday 8am-4:30pm (CAT)

Product Specifications for 621K

  • NORMAL
    • Maximum Cutting Depth315 mm
    • Maximum Spreading Depth540 mm
    • Turning Diameter, curb to curb, 180°11.8 m
    • Scraper Capacity: Heaped13 m³
    • Scraper Tires33.25R29**E3
    • Overall Width3.57 m
    • Overall Shipping Height4.03 m
    • Cutting Width3.14 m
    • Tractor Drive Tires33.25R29**E3
    • Maximum Speed, Loaded53.9 km/h
    • Scraper Fuel Tank Capacity763 l
    • Scraper Capacity: Struck18.4 m³
    • Nominal Payload26,127 kg (57,610 lb) ; 26.19 metric tons (28.81 US tons)
  • ENGINE
    • Engine Rated Speed (rpm) - Tractor2000 rpm
    • Engine Model - TractorC13 ACERT Cat
    • Tractor Flywheel Power304 kW
    • NoteThe Cat C13 ACERT engine complies with U.S. Environmental Protection Agency (EPA) Tier 4 Final and European Union Stage IV emissions standards.
  • TRACTOR ENGINE
    • Tractor/Scraper Flywheel Power304 kW (407 HP)
  • SCRAPER BOWL
    • Scraper Heaped Capacity18.4 m³
  • TRANSMISSION
    • Maximum Speed, Loaded53.9 km/h
  • MAINTENANCE CAPACITIES
    • Hydraulic System83 l
    • Cooling System45 l
    • Crankcase30.58 l
    • Diesel Exhaust Fluid30.5 l
    • Transmission System93 l
  • SERVICE REFILL CAPACITIES
    • Fuel Tank818 l
  • DIMENSIONS
    • Machine Overall Width3585 mm
    • Tractor Width3381 mm
    • Bowl Interior Width3048 mm
    • Outside Rear Tire Width3275 mm
    • Overall Shipping Height4029 mm
    • Cab Top Height3612 mm
    • Tractor Ground Clearance557 mm
    • Front Axle to Front of Tractor3119 mm
    • Axle to Vertical Hitch Pivot Pin540 mm
    • Maximum Scraper Cutting Edge Height520 mm
    • Wheelbase7998 m
    • Rear Axle to Rear of Machine2898 mm
    • Maximum Length (Extractor to Apron)15576 mm
    • Machine Overall Length - Standard14015 mm
    • Rear Axle Spacing2290 mm
    • Machine Overall Width - Apron Down3790 mm
  • NO PUSH-PULL
    • Overall Length14.02 m
    • Operating Weight - Empty36185 kg
  • PUSH-PULL
    • Operating Weight - Empty36567 kg
    • Overall Length - Tow Hook Down15.58 m
  • CAB
    • ROPS/FOPS FrameConforms to SAE and ISO standards
    • External Cab Sound Pressure LevelStandard machine exterior sound power level (ISO 6393) is 111.5 dB(A).
  • SAFETY STANDARD COMPLIANCE CRITERIA
    • BrakesISO 3450:1996
    • Seat BeltSAE J386:JUN1985
    • Steering SystemISO 5010:2007
    • Backup AlarmISO 9533:2010
    • Roll-Over Protective Structure (ROPS)ISO 3471:2008 up to 17,084 kg (37,664 lb)
    • Falling Object Protective Structure (FOPS)ISO 3449:2005 Stage II
  • TRAVEL SPEEDS - ON-THE-GO
    • Transmission Ratio: Sixth29.6 km/h
    • Transmission Ratio: Fifth21.9 km/h
    • Transmission Ratio: Reverse9.2 km/h
    • Transmission Ratio: Second8.9 km/h
    • Transmission Ratio: Third12.1 km/h
    • Transmission Ratio: First5 km/h
    • Transmission Ratio: Eighth53.9 km/h
    • Transmission Ratio: Fourth16.3 km/h
    • Transmission Ratio: Seventh39.9 km/h
  • EQUIPMENT CYCLE TIMES
    • Apron Lowering Time3.2 s
    • Apron Raising Time1.8 s
    • Bowl Down Time3.8 s
    • Bowl Raise Time2.95 s
    • Ejector Extend Time5.2 s
    • Ejector Retract Time6.7 s
    • Bowl Raise Time3 s
    • Bowl Lowering Time3.5 s

Standard Equipment for 621K

  • POWERTRAIN - TRACTOR
    • C13 ACERT Cat Engine with MEUI
    • Cat Engine Brake
    • Electric Starter, 24 V
    • Dry-Type Air Filter with Prefilter
    • Hydraulic Fan
    • Ground-Level Engine Shutdown
    • Aluminum Radiator, 9 Fins per Inch Cooling Pack
    • Belly Pan Guard
    • Muffler (only for engine versions in lightly or non-regulated regions)
    • Ether Starting Aid
    • Brake System: - Primary and Secondary, Wet Disc, Hydraulic - Parking Brake, Hydraulic Release, Spring Engaged - Throttle Lock
    • Transmission: - 8-Speed Planetary Powershift - ECPC Control - APECS Software - Programmable Top Gear Selection - Transmission Hold - Differential Lock - Powertrain Protection - Tire Spin Reduction as Standard - Ground Speed Control - Machine Speed Limit - Differential Lock Protection
  • POWERTRAIN - SCRAPER
    • Brake System: - Primary and Secondary, Oil Bath Disc, Hydraulic
  • ELECTRICAL SYSTEM - TRACTOR
    • 150A Alternator
    • Batteries (4), 12 V, 1,000 CCA (Cold Cranking Amps), Maintenance-Free, High Output
    • 24 V Electrical System
    • Lighting System: - Halogen Headlights - Turn Signals with Hazard Function, LED Work Lights (2), Cutting Edge (1), Bowl, Halogen Side Lights (2)
    • Charge/Start Receptacle
  • ELECTRICAL SYSTEM - SCRAPER
    • Reverse Alarm
    • Lighting System: - LED Stop Lights - LED Turn Signals with Hazard Function
  • OPERATOR STATION - TRACTOR
    • Heating/Ventilation/Air Conditioning, Defrost
    • Heating/Ventilation/Air Conditioning Thermostat Control
    • Coat Hook
    • Lunch Basket Platform with Retaining Strap
    • Diagnostic Connector (2)
    • 12 V Power Outlet (2)
    • Differential Lock (1)
    • Overhead Light
    • Electric Horn
    • T-Bar Equipment Control
    • Interior Rearview Mirror
    • Radio Readiness
    • Pressurized ROPS/FOPS Cab
    • Keypad Switches: - Throttle Lock - Wiper/Washer - Hazard Lights - Slow Speed Selection - Work Lights On/Off - Messenger Display Information Mode
    • Safety Latch Toggles
    • Two-Part Static Seat Belt
    • Advanced Ride Management (ARM) Comfort Cat Series 3 Seat, 30° Swivel
    • Tilt, Telescoping, Padded Steering Wheel
    • Emergency Exit Windows on Right Side
    • Sliding Windows
    • Laminated Sliding Windows
    • Windshield Wipers, Front and Rear, with Washer
    • Door Lock
    • Messenger Display
    • Indicators and Warnings Include: - Coolant Temperature - Engine Oil Temperature - Hydraulic Oil Temperature - DPF Temperature - Fuel Level - Parking Brake - Equipment Lock - Brake System - Regeneration Required - Throttle Lock - Circuit Voltage - Auxiliary Steering - Down-Bar - Auto Kickout - Differential Lock - Free Fork Position - Transmission Ratio Lock - Tow Hitch Suspension - High Beam - Main Indicator - Engine Speed, rpm - Gear Selection - DEF Fill Levels
  • FLUIDS
    • Long-Life Coolant Down to -37°C (-34°F)
  • OTHER STANDARD EQUIPMENT - TRACTOR
    • Advanced Tow Hitch Damper
    • Tow Hitch Accumulators with Canadian Registration Number (CRN)
    • Quick Oil Change
    • Non-Metallic Fenders
    • Engine Coolant Heater (120 V)
    • Rims (2)
    • Front Tow Hook
    • Antivandalism Locks
    • Engine Coolant Heater (120 V)
  • OTHER STANDARD EQUIPMENT - SCRAPER
    • Bowl: - 18.4 m³ (24 yd³), Heaped - 14.1 m³ (18.4 yd³), Struck
    • Antivandalism Locks
    • Hydraulic Position Sensing Cylinders (Bowl Lift and Ejector)

Available Options for 621K

  • STEERING OPTIONS
    • Auxiliary Steering Version
  • INTEGRATED TECHNOLOGIES
    • Sequential Aid Version
    • Loading Assistance
    • Cat Grading Control with Loading Assistance
  • OTHER EQUIPMENT
    • Camera Version - WAVS
    • External Steering Lock
    • Cab Beacon Light
    • Pneumatic Horn
    • Pneumatic Horn and Beacon Light
    • Mudguards, Scraper
    • Overflow Protection
    • Wiring Kit
    • Manufacturing Year Plate
  • HEADLIGHT EQUIPMENT
    • High-Intensity Discharge (HID) Headlights
  • AMBIENT TEMPERATURE CAPABILITY VERSIONS
    • High Ambient Temperature Cooling - HRC
    • Low Ambient Temperature Cooling - HRC
    • High Ambient Temperature Cooling - LRC
    • Low Ambient Temperature Cooling - LRC
  • MAINTENANCE INSTRUCTIONS
    • Film Version - United States (ANSI)
    • Film Version - International (ISO)

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