621 Wheel Tractor-Scraper

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Product description

Our wheel tractor-scrapers have long been considered the basic method of moving volumes of material, and the Cat® 621 Wheel Tractor-Scraper is no exception. Known for its ability to be push-loaded and high travel speeds, it’s always an earthmover’s first tool of choice when working in challenging load areas. With an open bowl and a single engine, this machine is designed to handle a wide range of material types ranging from sand to ripped rock 609.6 mm (24 “) or less in size.

Tractor Engine

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

Scraper Bowl

Scraper Capacity - Heaped - 24yd³

Transmission

Top Speed - Loaded - 33.5mile/h

Dimensions

Width - Overall Machine - 141.1in
Width - Tractor - 133.1in
Width - Inside of Bowl - 120in
Width - Outside Rear Tires - 128.9in
Height - Overall Shipping - 158.6in
Height - Top of Cab - 142.2in
Ground Clearance - Tractor - 21.9in
Front of Tractor to Front Axle - 122.8in
Axle to Vertical Hitch Pin - 21.3in
Height - Scraper Blade Maximum - 20.5in
Wheel Base - 314.9in
Rear Axle - Rear of Machine - 114.1in
Width - Overall Machine - Ladder Down - 149.2in
Length - Overall Machine - Standard - 551.8in
Length - Maximum (Push-Pull) - 613.2in
Width - Rear Tire Centers - 90.2in

General

Maximum Depth of Cut - 12.4in
Fuel Tank Refill Capacity - Scraper - 216.1gal (US)
180° Curb-to-Curb Turning Width - 38.71ft
Scraper Capacity - Heaped - 24yd³
Overall Width - 11.75ft
Maximum Depth of Spread - 21.3in
Overall Shipping Height - 13.22ft
Tires - Tractor Drive - 33.25R29**E3
Width - Cut - 10.3ft
Scraper Capacity - Struck - 17.1yd³
Top Speed - Loaded - 33.5mile/h
Tires - Scraper - 33.25R29**E3
Rated Load - 26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons)

Engine

Note - Cat® C13 engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards.
Flywheel Power - Tractor - 407hp
Rated Engine RPM - Tractor - 2000r/min
Engine Model - Tractor - Cat® C13

Service Refill Capacities

Fuel Tank - 216.09gal (US)
Crankcase - 8.08gal (US)
Hydraulic System - 21.926gal (US)
Diesel Exhaust Fluid - 8.057gal (US)
Cooling System - 11.89gal (US)
Transmission System - 24.76gal (US)

Non Push-Pull

Overall Length - 45.9ft
Operating Weight - Empty - 79787lb

Push-Pull

Operating Weight - Empty - 80630lb
Overall Length - With Bail Down - 51.1ft

Cab

Exterior Sound Level - The exterior sound power level for the standard machine (ISO 6393:2008) is 118 dB(A).
ROPS/FOPS - Meets SAE and ISO standards

Safety Criteria Compliance Standards

Reverse Alarm - ISO 9533:2010
Brakes - ISO 3450:1996
Rollover Protection Structure (ROPS) - ISO 3471:2008 for up to 17 084 kg (37,664 lb)
Falling Object Protective Structure (FOPS) - ISO 3449:2005 Level II
Steering System - ISO 5010:2007
Seat Belt - SAE J386:JUN1985

Travel Speeds - Runout

Transmission Gear - Eighth - 33.5mile/h
Transmission Gear - Third - 7.5mile/h
Transmission Gear - Fourth - 10.1mile/h
Transmission Gear - First - 3.1mile/h
Transmission Gear - Fifth - 13.6mile/h
Transmission Gear - Reverse - 5.7mile/h
Transmission Gear - Seventh - 24.8mile/h
Transmission Gear - Sixth - 18.4mile/h
Transmission Gear - Second - 5.5mile/h

Implement Cycle Times

Ejector Retract - 6.7s
Bail Raise - 1.8s
Apron Raise - 2.95s
Apron Lower - 3.8s
Ejector Extend - 5.2s
Bowl Raise - 3s
Bowl Lower - 3.5s
Bail Lower - 3.2s

Standard Equipment:

Note
- Standard and optional equipment may vary. Consult your Cat dealer for details.
Power Train - Tractor
- Cat^® C13 engine with MEUI^™
- 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 - Throttle lock
- Transmission: - 8-speed planetary power shift - ECPC control - APECS software - Programmable top gear selection - Transmission hold - Differential lock - Guard, power train - Standard tire spin reduction - Ground speed control - Machine speed limit - Differential lock protection
Integrated Technologies
- Sequence Assist and Cat Payload Arrangement
Power Train - Scraper
- Braking system: - Primary and secondary, wet disc, hydraulic
Electrical - Tractor
- Alternator, 150 Amp
- Batteries (4), 12V, 1,000 CCA, maintenance free, high output
- Electrical system, 24V
- Lighting system: - Headlights, halogen - Turn signals with hazard function, LED floodlights, (2) cutting edge (1) bowl, halogen side vision (2)
- Starting/charging receptacle
Electrical - Scraper
- Alarm, backup
- Lighting system: - Brake lights, LED - Turn signals with hazard function, LED
Operator Environment - Tractor
- Camera arrangement - WAVS
- 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
- Keypad switches: - Throttle lock - Wipers/washers - Hazard lights - Retarding level select - Work lights on, off - Information mode on Messenger Display
- Safety tab rocker switches
- 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
- Interactive touchscreen vehicle information display
- Gauges, warnings include: - Coolant temperature - Engine oil temperature - Hydraulic oil temperature - DPF temperature - Fuel level - Park brake - Implement lockout - Brake system - Regeneration required - Throttle lock - System voltage - Secondary steering - Bail down - Ejector auto - Differential lock - Apron float - Transmission hold - Cushion hitch - High beam lights - Action lamp - Engine speed, rpm - Gear selection - DEF fill levels
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
Other Standard Equipment - Scraper
- Fender, scraper
- Bowl: - 18.4 m3 (24 yd3), heaped - 14.1 m3 (18.4 yd3), struck
- Vandalism locks
- Hydraulic position sensing cylinders (bowl lift and apron)

Optional Equipment:

Note
- Standard and optional equipment may vary. Consult your Cat dealer for details.
Steering Arrangements
- Secondary Steering Arrangement
Integrated Technologies
- Cat Grade Control, Cat Payload, Sequence Assit, and Load Assist
Other Attachments
- Steering lock - external
- Cab beacon with air horn
- Air horn
- Air horn and beacon
- Wiring group
- Year of manufacture plate
Other Standard Equipment – Scraper
- Bowl overflow guard
Work Light Attachments
- HID work lights
Ambient Capability Arrangements
- Cooling, high ambient HRC
- Cooling, low ambient HRC
- Cooling, high ambient LRC
- Cooling, low ambient LRC
Service Instructions
- Film arrangement - U.S. (ANSI)
- Film arrangement - International (ISO)

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