Tractor Engine
| Flywheel Power - Tractor/Scraper | 304 kW (407 hp) 304 kW (407 hp) |
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Open Bowl Scrapers 621
Request A Price Find DealerKey Specs
- Flywheel Power - Tractor/Scraper
- 304 kW (407 hp)
- 304 kW (407 hp)
- Scraper Capacity - Heaped
- 24 yd³
- 18.4 m³
- Top Speed - Loaded
- 33.5 mile/h
- 53.9 km/h
Overview
REDFINING YOUR PROFIT POTENTIAL
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.
Benefits
Increased Comfort
Ergonomic controls and a newly redesigned cab interior provide a more comfortable and efficient working environment all day long
Improved Productivity
Improvements in fuel efficiency and responsive APECS transmission controls deliver more productivity in most applications
Additional Safety
New safety features help operators be more productive and work more efficiently all day long
Features At A Glance
BE MORE PRODUCTIVE
- Advanced Productivity Electronic Control System (APECS) allows the engine and transmission to communicate on a high level. This communication allows the machine to utilize better the power and torque the engine is producing. The net result is moving more material.
- 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.
- 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.
- Boost productivity with the Cat Payload feature (optional attachment). Cat Payload is an automatic feature when ordered with Sequence Assist.
- Cat Payload for scrapers is an earthmoving solution for optimal payload and job site efficiency. Cat Payload achieves on-the-go weighing by using bowl lift cylinder pressure during the loaded haul segment. Cat Payload is optimized to be used with Sequence Assist, which provides increased productivity with less operator effort.
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
- Enhance an operator’s awareness of site surroundings with the
Work Area Vision System (WAVS). - Seat belt indicator provides visual and audible alerts when the seat
belt is not in use. - Advanced Cushion Hitch allows the cushion hitch to prevent end
stroke by predicting endstroke events and managing the
rate of dampening, resulting in reduced hitch maintenance and improved
operator ride in rough conditions.
EASY TO OPERATE
- The spacious cab features easy, intuitive controls and excellent visibility
. The cab provides a comfortable working environment for all-day
operations. - Cat Advanced Ride Management (ARM) seat suspension reduces
endstroke 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's speed by canceling the throttle command
and engaging the engine compression brake.
INTEGRATED CAT TECHNOLOGIES
- Monitor, manage, and enhance job site 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.
- Vision 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 job site.
- Shorten the learning curve for inexperienced operators with Cat grade control and load assist. (optional attachment).
EXECUTE EFFICIENCY
- The new tractor hydraulic on-demand fan helps assist in lower fuel consumption.
- The Cat C13 tractor engine meets U.S. EPA Tier 4 Final or EU Stage V emission standards, contributing to lower fuel consumption.
- 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.
Product Specifications for 621
Scraper Bowl
| Scraper Capacity - Heaped | 24 yd³ 18.4 m³ |
Transmission
| Top Speed - Loaded | 33.5 mile/h 53.9 km/h |
Dimensions
| Width - Overall Machine | 141.1 in 3585 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 |
| Height - Overall Shipping | 158.6 in 4029 mm |
| Height - Top of Cab | 142.2 in 3612 mm |
| Ground Clearance - Tractor | 21.9 in 557 mm |
| Front of Tractor to Front Axle | 122.8 in 3119 mm |
| Axle to Vertical Hitch Pin | 21.3 in 540 mm |
| Height - Scraper Blade Maximum | 20.5 in 520 mm |
| Wheel Base | 314.9 in 7998 mm |
| Rear Axle - Rear of Machine | 114.1 in 2898 mm |
| Width - Overall Machine - Ladder Down | 149.2 in 3790 mm |
| Length - Overall Machine - Standard | 551.8 in 14015 mm |
| Length - Maximum (Push-Pull) | 613.2 in 15576 mm |
| Width - Rear Tire Centers | 90.2 in 2290 mm |
General
| Maximum Depth of Cut | 12.4 in 315 mm |
| Fuel Tank Refill Capacity - Scraper | 216.1 gal (US) 818 l |
| 180° Curb-to-Curb Turning Width | 38.71 ft 11.8 m |
| Scraper Capacity - Heaped | 24 yd³ 18.4 m³ |
| Overall Width | 11.75 ft 3.58 m |
| Maximum Depth of Spread | 21.3 in 540 mm |
| Overall Shipping Height | 13.22 ft 4.03 m |
| Tires - Tractor Drive | 33.25R29**E3 33.25R29**E3 |
| Width - Cut | 10.3 ft 3.14 m |
| Scraper Capacity - Struck | 17.1 yd³ 13 m³ |
| Top Speed - Loaded | 33.5 mile/h 53.9 km/h |
| Tires - Scraper | 33.25R29**E3 33.25R29**E3 |
| Rated Load | 26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons) 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. Cat® C13 engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards. |
| Flywheel Power - Tractor | 407 hp 304 kW |
| Rated Engine RPM - Tractor | 2000 r/min 2000 r/min |
| Engine Model - Tractor | Cat® C13 Cat® C13 |
Service Refill Capacities
| Fuel Tank | 216.09 gal (US) 818 l |
| Crankcase | 8.08 gal (US) 30.58 l |
| Hydraulic System | 21.926 gal (US) 83 l |
| Diesel Exhaust Fluid | 8.0572 gal (US) 30.5 l |
| Cooling System | 11.89 gal (US) 45 l |
| Transmission System | 24.76 gal (US) 93 l |
Non Push-Pull
| Overall Length | 45.9 ft 14.02 m |
| Operating Weight - Empty | 79787 lb 36185 kg |
Push-Pull
| Operating Weight - Empty | 80630 lb 36567 kg |
| Overall Length - With Bail Down | 51.1 ft 15.58 m |
Cab
| Exterior Sound Level | The exterior sound power level for the standard machine (ISO 6393:2008) is 118 dB(A). The exterior sound power level for the standard machine (ISO 6393:2008) is 118 dB(A). |
| ROPS/FOPS | Meets SAE and ISO standards Meets SAE and ISO standards |
Safety Criteria Compliance Standards
| Reverse Alarm | ISO 9533:2010 ISO 9533:2010 |
| Brakes | ISO 3450:1996 ISO 3450:1996 |
| Rollover Protection Structure (ROPS) | ISO 3471:2008 for up to 17 084 kg (37,664 lb) ISO 3471:2008 for up to 17 084 kg (37,664 lb) |
| Falling Object Protective Structure (FOPS) | ISO 3449:2005 Level II ISO 3449:2005 Level II |
| Steering System | ISO 5010:2007 ISO 5010:2007 |
| Seat Belt | SAE J386:JUN1985 SAE J386:JUN1985 |
Travel Speeds - Runout
| Transmission Gear - Eighth | 33.5 mile/h 53.9 km/h |
| Transmission Gear - Third | 7.5 mile/h 12.1 km/h |
| Transmission Gear - Fourth | 10.1 mile/h 16.3 km/h |
| Transmission Gear - First | 3.1 mile/h 5 km/h |
| Transmission Gear - Fifth | 13.6 mile/h 21.9 km/h |
| Transmission Gear - Reverse | 5.7 mile/h 9.2 km/h |
| Transmission Gear - Seventh | 24.8 mile/h 39.9 km/h |
| Transmission Gear - Sixth | 18.4 mile/h 29.6 km/h |
| Transmission Gear - Second | 5.5 mile/h 8.9 km/h |
Implement Cycle Times
| Ejector Retract | 6.7 s 6.7 s |
| Bail Raise | 1.8 s 1.8 s |
| Apron Raise | 2.95 s 2.95 s |
| Apron Lower | 3.8 s 3.8 s |
| Ejector Extend | 5.2 s 5.2 s |
| Bowl Raise | 3 s 3 s |
| Bowl Lower | 3.5 s 3.5 s |
| Bail Lower | 3.2 s 3.2 s |
621 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)
621 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)
See how 621 compares against frequently compared products.
Wheel Tractor-Scrapers
621
Selected
- Flywheel Power - Tractor/Scraper
- 304 kW (407 hp)
- 304 kW (407 hp)
- Scraper Capacity - Heaped
- 24 yd³
- 18.4 m³
- Top Speed - Loaded
- 33.5 mile/h
- 53.9 km/h
Wheel Tractor-Scrapers
621
- Flywheel Power - Tractor/Scraper
- 304 kW (407 hp)
- 304 kW (407 hp)
- Scraper Capacity - Heaped
- 24 yd³
- 18.4 m³
- Top Speed - Loaded
- 33.5 mile/h
- 53.9 km/h
Wheel Tractor-Scrapers
627
- Flywheel Power - Tractor/Scraper
- 304 kW (407 hp)/216 kW (290 hp)
- 304 kW (407 hp)/216 kW (290 hp)
- Scraper Capacity - Heaped
- 24 yd³
- 18.4 m³
- Top Speed - Loaded
- 33.5 mile/h
- 53.9 km/h
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