621 Open Bowl Scrapers

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. Overall Shipping Height 4.03 m Overall Width 3.58 m Scraper Capacity – Heaped 18.4 m³ Product specifications for 621 Open Bowl Scrapers General expand / collapse icon Overall Shipping Height 4.03 m Overall Width 3.58 m Scraper Capacity – Heaped 18.4 m³ Fuel Tank Refill Capacity – Scraper 818 l Tires – Scraper 33.25R29**E3 Width – Cut 3.14 m Maximum Depth of Spread 540 mm Top Speed – Loaded 53.9 km/h Rated Load 26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons) 180° Curb-to-Curb Turning Width 11.8 m Scraper Capacity – Struck 13 m³ Maximum Depth of Cut 315 mm Tires – Tractor Drive 33.25R29**E3 Engine expand / collapse icon Engine Model – Tractor Cat C13 Flywheel Power – Tractor 304 kW Note Cat C13 engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards. Rated Engine RPM – Tractor 2000 r/min Tractor Engine expand / collapse icon Flywheel Power – Tractor/Scraper 304 kW (407 hp) Scraper Bowl expand / collapse icon Scraper Capacity – Heaped 18.4 m³ Transmission expand / collapse icon Top Speed – Loaded 53.9 km/h Service Refill Capacities expand / collapse icon Hydraulic System 83 l Crankcase 30.58 l Transmission System 93 l Cooling System 45 l Fuel Tank 818 l Diesel Exhaust Fluid 30.5 l Dimensions expand / collapse icon Width – Overall Machine 3585 mm Width – Tractor 3381 mm Width – Inside of Bowl 3048 mm Width – Outside Rear Tires 3275 mm Height – Overall Shipping 4029 mm Height – Top of Cab 3612 mm Ground Clearance – Tractor 557 mm Front of Tractor to Front Axle 3119 mm Axle to Vertical Hitch Pin 540 mm Height – Scraper Blade Maximum 520 mm Wheel Base 7998 mm Rear Axle – Rear of Machine 2898 mm Length – Overall Machine – Standard 14015 mm Length – Maximum (Push-Pull) 15576 mm Width – Overall Machine – Ladder Down 3790 mm Width – Rear Tire Centers 2290 mm Non Push-Pull expand / collapse icon Operating Weight – Empty 36185 kg Overall Length 14.02 m Push-Pull expand / collapse icon Overall Length – With Bail Down 15.58 m Operating Weight – Empty 36567 kg Cab expand / collapse icon 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 expand / collapse icon Rollover Protection Structure (ROPS) ISO 3471:2008 for up to 17 084 kg (37,664 lb) Brakes ISO 3450:1996 Reverse Alarm ISO 9533:2010 Falling Object Protective Structure (FOPS) ISO 3449:2005 Level II Seat Belt SAE J386:JUN1985 Steering System ISO 5010:2007 Travel Speeds – Runout expand / collapse icon Transmission Gear – Seventh 39.9 km/h Transmission Gear – Fifth 21.9 km/h Transmission Gear – First 5 km/h Transmission Gear – Sixth 29.6 km/h Transmission Gear – Second 8.9 km/h Transmission Gear – Third 12.1 km/h Transmission Gear – Fourth 16.3 km/h Transmission Gear – Eighth 53.9 km/h Transmission Gear – Reverse 9.2 km/h Implement Cycle Times expand / collapse icon Apron Raise 2.95 s Bowl Raise 3 s Ejector Retract 6.7 s Bowl Lower 3.5 s Apron Lower 3.8 s Ejector Extend 5.2 s Bail Lower 3.2 s Bail Raise 1.8 s BE MORE PRODUCTIVE See more BE MORE PRODUCTIVE Up to 8% improvement in productivity. 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. 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 Payload Estimator feature (optional attachment). Payload Estimator is an automatic feature when ordered with Sequence Assist. 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. WORK IN COMFORT See more 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 See more DESIGNED FOR SAFETY 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. 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. EASY TO OPERATE See more 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 See more 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). EXECUTE EFFICIENCY See more 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. 621 Standard Equipment Expand all NOTE expand / collapse icon Standard and optional equipment may vary. Consult your Cat dealer for details. POWER TRAIN – TRACTOR expand / collapse icon 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 POWER TRAIN – SCRAPER expand / collapse icon Braking system: – Primary and secondary, wet disc, hydraulic ELECTRICAL – TRACTOR expand / collapse icon 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 expand / collapse icon Alarm, backup Lighting system: – Brake lights, LED – Turn signals with hazard function, LED OPERATOR ENVIRONMENT – TRACTOR expand / collapse icon 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 Messenger 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 expand / collapse icon Extended Life Coolant to -37° C (-34° F) OTHER STANDARD EQUIPMENT – TRACTOR expand / collapse icon 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 expand / collapse icon 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 Expand all NOTE expand / collapse icon Standard and optional equipment may vary. Consult your Cat dealer for details. STEERING ARRANGEMENTS expand / collapse icon Secondary Steering Arrangement INTEGRATED TECHNOLOGIES expand / collapse icon Sequence Assist Arrangement Load Assist Cat Grade Control with Load Assist WORK LIGHT ATTACHMENTS expand / collapse icon HID work lights AMBIENT CAPABILITY ARRANGEMENTS expand / collapse icon Cooling, high ambient HRC Cooling, low ambient HRC Cooling, high ambient LRC Cooling, low ambient LRC OTHER ATTACHMENTS expand / collapse icon Camera arrangement – WAVS Steering lock – external Cab beacon Air horn Air horn and beacon Fender, scraper Guard, overflow Wiring group Year of manufacture plate SERVICE INSTRUCTIONS expand / collapse icon Film arrangement – U.S. (ANSI) Film arrangement – International (ISO)