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Open Bowl Scraper (621H)
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Catalog excerpts

Open Bowl Scraper (621H) - 1

Engine Scraper Bowl Tractor Cat® C13 ACERT™ Heaped Capacity 18.3 m3 24yd3 Max. Power 304 kW 407 hp Rated Load 26 1 27 kg 57,600 lb

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Open Bowl Scraper (621H) - 2

621H Features Economical Hauling System The wheel tractor-scraper, with its ability to load quickly, haul at high speeds and dump on the go, has the potential to be the most profitable hauling system on the job site. This efficiency can result in fewer machines on the job, reduced operating costs and jobs delivered in a shorter period of time. Power Train Caterpillar designed and manufactured power train components deliver the power necessary for fast loading and quick hauls. Operator Station Single joystick control of implements, adjustable arm rests, seat, steering column and room to...

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Operator’s Station Ergonomically designed for all-day comfort, control and productivity. Ergonomic Layout The all new H Series operator station is ergonomically designed for total machine control in a comfortable, productive and safe environment. All controls, levers, switches and gauges are positioned to maximize productivity and facilitate a reduction in operator fatigue. Viewing Area Designed for excellent all-around visibility and clear sight lines to the job site, the large viewing area offers exceptional visibility to the front of the machine as well as to the cutting edge. The air...

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Operator Comfort High productivity from a comfortable, confident operator. Spacious Cab With a 21% larger cab, H Series scrapers offer a comfortable working space. The larger cab and wider door make getting in and out of the cab easier. The increased glass area enhances visibility around the machine. Steering Column The steering column and pedals have been relocated for more comfortable operation when the seat is angled during machine operation. The telescopic and tilt adjustable steering column maintains a comfortable driving position regardless of operator size. Standard Comfort Features...

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Power Train – Engine The Cat® C13 ACERT™ engine are built for power, reliability and efficiency. ACERT Technology The Cat® C13 ACERT™ engine continues the evolutionary, incremental improvements that provide breakthrough engine technology built on systems and components developed by Caterpillar with proven reliability. The engine is available with either U.S. EPA Tier 3/EU Stage IIIA equivalent emission configurations or U.S. EPA Tier 4 Interim/EU Stage IIIB certified emission configurations to meet the needs of contractors around the world. Emissions Machines equipped with engines meeting...

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Power Train – Transmission More power to the ground for greater productivity. Electronic Transmission The Cat eight-speed forward one-speed reverse Electronic Clutch Pressure Controlled (ECPC) transmission features enhanced shift control logic with anti-hunt shift strategy for speed continuity, and to ensure constant shift times. • Tractor gears 1-2 – converter drive for increased torque, gears 3-8 – direct-drive for drive train efficiency. Scraper gears use converter drive for more torque in the cut. • Transmission Hold maintains converter drive for maximum rimpull or holds current gear...

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Superior design and construction delivers long term durability. Cushion Hitch Electronically actuated with parallelogram-type linkage for exceptional strength, with two nitrogen accumulators (4) using free-floating pistons (8) to deliver a smooth ride for enhanced operator comfort and machine durability. • controlled oil flow (6) dampens rebound oscillation • leveling valve (7) applies pressure via an orifice (5) to automatically center the piston in load cylinder (1) • steel castings are used to eliminate many welded joints and increase strength • double-kingbolt design (2, 3) withstands...

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Open Bowl Scraper (621H) - 8

Scraper Bowl Caterpillar designed and built for rugged performance and reliability. Redesigned Bowl The 621H uses a new bowl design than enhances productivity through a 9% increase in bowl capacity over previous models. The low profile design offers low resistance to incoming materials, while cellular constructions adds strength and dent resistance to the bowl sides and floor. Hydraulic Lines Protection Hydraulic lines durability is increased by routing them through the bowl sidewalls where they are protected from damage on the job site. Ejection System The powerful ejection system provides...

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Loading Options Flexible loading options to adapt to changing job site conditions. Push-Loading To achieve maximum productivity, the 621H should be push-loaded with a D8- or D9-size Track-Type Tractor. Push-Pull The push-pull arrangement is recommended for applications that require a large amount of material to be moved very quickly at low cost per bank cubic meter (bank cubic yard). The push-pull arrangement concentrates the combined power of two machines onto one cutting edge. Push-pull scrapers work in pairs where the lead scraper is pushed through the cut by the trailing scraper. When...

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Integrated Technologies Technology options to improve operator comfort and increase productivity. Sequence Assist Sequence Assist uses integrated software and position-sensing cylinders to automate many of the tasks an operator performs when loading, hauling and dumping. The operator simply sets preferences for bowl and apron height and subsequently pushes a button to ready the machine for loading, then hauling, then dumping, and then the return to cut. The system automatically sets the cushion hitch, bowl height, apron, and ejector. Sequence Assist comes with a convenient load counter for...

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Complete Customer Support Cat® dealer services help you operate longer with lower costs. Selection Make comparisons of the machines you are considering before you buy. Your Cat® dealer can help. Purchase Consider the resale value, compare productivity and day-to-day operating costs and fuel consumption. Operation For the best operating techniques to increase productivity and your profit, turn to your Cat dealer for the latest training literature and trained staff. Maintenance Repair option programs guarantee the cost of repairs up front. Diagnostic programs such as S·O·SSM and Technical...

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