321D LCR Hydraulic Excavator Engine Engine Model Cat C6.4 ACERT Net Flywheel Power 103 kw 138 hp Weights Operating Weight 23 600 kg 52,040 lb Reach boom, R2.9B1 (9 ft 6 in) Stick, 0.8 m 3 (1.0 yd 3 ) Bucket, 600 mm (24 in) Shoes
321D LCR Hydraulic Excavator The D Series incorporates innovations for improved performance and versatility. Compact Radius The 321D LCR is a Compact Radius machine developed so that it can work in the narrow job-site. The cylindrical upper frame and cylindrical operator station, allow the 321D LCR to rotate in the narrower job-sites. pg. 4 C6.4 with ACERT Technology ACERT Technology works at the point of combustion to optimize engine performance and provide low exhaust emissions to meet various emission regulations, with exceptional performance capabilities and proven reliability. By combining excellent fuel efficiency and maximized production, 321D LCR will provide unmatched profit potential. pg. 5 Hydraulics The hydraulic system has been designed to provide reliability and outstanding controllability. An optional Tool Control System provides enhanced flexibility. pg. 6 Work Tools Attachments A variety of work tools, including buckets, couplers, hammers, grapples and hydraulic thumbs are available through Cat Work Tools. pg. 11 Versatility Caterpillar offers a wide variety of factory-installed attachments that enhance performance and job site management. pg. 12 The Caterpillar 321D LCR excavator provides all the elements to give you the lowest cost to own and operate. At the end of the day, it all comes down to how much work you got done and how much did it cost you. Caterpillar and the 321D LCR offer you the tools to help lower your owning and operating costs. 2
Structures Caterpillar design and manufacturing techniques assure outstanding durability and service life from these important components. pg. 7 Operator Comfort Provides maximum space, wider visibility and easy access to switches. The monitor is a full-color graphical display that allows the operator to understand the machine information easily. Overall, the new cab provides a comfortable environment for the operator. pg. 8 Booms, Sticks and Bucket Linkages The pins and bushings provide 1,000 hour greasing intervals for boom and stick linkages under normal job conditions. pg. 10 Service and Maintenance Fast, easy service has been designed in with extended service intervals, advanced filtration, convenient filter access and user-friendly electronic diagnostics for increased productivity and reduced maintenance costs. pg. 13 Complete Customer Support Your Cat dealer offers a wide range of services that can be set up under a customer support agreement when you purchase your equipment. The dealer will help you choose a plan that can cover everything from machine configuration to eventual replacement. pg. 14 New Feature 3
Compact Radius The 321D LCR delivers exceptional performance and comfort. Compact Radius. The 321D LCR features a compact radius design, which makes it ideal for working in space restricted areas such as: close to buildings, road construction limiting lane closures or logging roads. The tail swing is just 1.68 m (5'6") as compared to the 2.75 m (9'0") on the 320D. When rotated 90 degrees and working over the side, a minimal amount of counterweight extends beyond the track width. Operator Confidence. Due to the compact working envelope, operators can work confidently knowing that the counterweight will not swing into any object behind them. Comfort. The cab is a comfortable place to work, with low sound levels, good visibility and convenient access to switches and controls. Additionally, the cab offers many of the same amenities and options found in the cab of the 320D/320D LRR. Working Envelope. To further minimize the working envelope, the boom is repositioning more towards the center of the machine as compared to a standard excavator. This reduces the front swing radius when the boom is pulled all the way up and the stick brought in completely. This design also increases the lift capacity over the front as it has a better mechanical advantage when compared to a standard excavator. 4
C6.4 with ACERT Technology The Cat C6.4 gives the 321D LCR exceptional power and fuel efficiency unmatched in the industry for consistently high performance in all applications. Cat C6.4. The Cat C6.4 with ACERT Technology introduces a series of evolutionary, incremental improvements that provide breakthrough engine technology. The building blocks of ACERT Technology are fuel delivery, air management and electronic control. ACERT Technology optimizes engine performance while meeting global low emission regulations. With its proven technology, robust components and precision manufacturing, you can count on this engine to power up at start time and keep working productively all shift long. Performance. The C6.4 engine with ACERT Technology, provides a speed and efficiency advantage in high production applications. By combining excellent fuel consumption of the C6.4 engine with the Economy Mode. Customers can balance the demands of performance and fuel economy to suit their requirements and application. Automatic Engine Speed Control. The two-stage, one-touch control reduces sound levels and fuel consumption. ADEM A4 Engine Controller. The ADEM A4 electronic control module manages fuel delivery to get the best performance per liter of fuel used. The engine management system provides flexible fuel mapping, allowing the engine to respond quickly to varying application needs. It tracks engine and machine conditions while keeping the engine operating at peak efficiency. Electronic Control Module. The Electronic Control Module (ECM) works as the brain of the engine s control system, responding quickly to operating variables to maximize engine efficiency. Fully integrated with sensors in the engine s fuel, air, coolant, and exhaust systems, the ECM stores and relays information on conditions such as rpm, fuel consumption, and diagnostic information. Fuel Delivery. The Cat C6.4 features electronic controls that govern the fuel injection system. Multiple injection fuel delivery involves a high degree of precision. Precisely shaping the combustion cycle lowers combustion chamber temperatures, generating fewer emissions and optimizing fuel combustion. This translates into more work output for your fuel cost. 5
Hydraulics Cat hydraulics deliver power and precise control to keep material moving. Component Layout. To optimize efficiency of hydraulic performance, the hydraulic components are located close together, which reduces friction loss and pressure drops in the lines. Pilot System. The pilot pump is independent from the main pumps and controls the front linkage, swing and travel operations. Hydraulic Cross Sensing System. The hydraulic cross sensing system utilizes each of two hydraulic pumps to 100 percent of engine power, under all operating conditions. This improves productivity with faster implement speeds and quicker, stronger pivot turns. Boom and Stick Regeneration Circuit. Boom and stick regeneration circuit saves energy during boom-down and stick-in operation which increases efficiency, reduces cycle times and pressure loss for higher productivity, lower operating costs and increased fuel efficiency. Auxiliary Hydraulic Valve. The auxiliary valve is standard on the 321D LCR. Control Circuits are available as attachments, allowing for operation of high and medium pressure tools such as shears, grapples, hammers, pulverizers, multi-processors and vibratory plate compactors. Hydraulic Cylinder Snubbers. Snubbers are located at the rod-end of the boom cylinders and both ends of the stick cylinders to cushion shocks while reducing sound levels and extending component life. System Pressure. System pressure has been increased to 35 000 kpa (5,076 psi), which attributes to improved performance: Increased stick and bucket forces (up 7% higher than the 321C LCR) to better handle those tight digging conditions More drawbar pull (206 kn 46,300 lb) to provide more ability to climb slopes, easier spot turns and improved travel in poor underfoot conditions More lift capacity, generally over the front where you are generally hydraulically limited Optional Heavy Lift. With the addition of an optional Heavy Lift, system pressure is increased to 36 000 kpa (5,220 psi), giving even more lift capacity over the front. Heavy Lift is activated by depressing the soft switch on the right hand console. As the pressure increases, the engine speed is reduced, which allows better control while lifting objects. 6
Structures 321D LCR is designed to handle the most rugged operating conditions, while providing long life and value. Robust Undercarriage. A solid foundation built tough to absorb the stresses of everyday work. Rollers and idlers are sealed and lubricated to extend service life. Track links are assembled and sealed with grease to decrease internal bushing wear and increase life by as much as 25%, when compared to dry seal undercarriages. Spring recoil system stroke has been increased to better relieve excess track tension, which can occur when material builds up between the track and sprocket. Rugged Structures. Structural components and the undercarriage are the backbone of the machine s durability. Caterpillar places a lot of emphasis on the machine s durability during the designing and manufacturing of its excavators. Up to 95% of the structural welds are welded by robots, which achieve up to three times the penetration of a manual weld and improving overall durability of the machine. The 321D LCR s main frame utilizes high-tensile strength steel and a one-piece swing table, which improves strength and reliability. The carbody has a X-shaped, box section design to resist bending and twisting forces. Track roller frames are press-formed in a pentagonal shape for additional strength. Engine Hood. The 321D LCR features a one-piece, flat engine hood. The engine hood opens backward. Because the engine hood is located in a place where it does not obstruct access to the inspection points in the engine compartment, all of the maintenance points can be accessed. Counterweight. The counterweight on the 321D LCR is split into two pieces for improved serviceability. The top piece weighs approximately 2270 kg (5,000 lb), and the bottom weighs 3830 kg (8,450 lb). The counterweight is a cast structure and rounded in order to minimize the amount of overhang. 7
Operator Comfort Caterpillar offers the most intuitive and easy to operate excavators while providing great all around visibility and exceptional operator comfort. 8
Operator Station. The layout of the interior has been redesigned to maximize operator comfort and reduce operator fatigue. Frequently used switches have been relocated for easier access. Consoles and armrests have been redesigned for better comfort and adjustability. More seat options choose from the static seat, the mechanical suspension seat, or the air suspension seat with heater. All provide excellent comfort. Standard Cab Equipment. To enhance operator comfort and productivity, the cab includes a lighter, drink holder, coat hook, service meter, literature holder, magazine rack and storage compartment. Joystick Control. Joystick controls have low lever effort and are designed to match the operator s natural wrist and arm position. Hydraulic Activation Control Lever. For added safety, this lever must be in the operate position to activate the machine control functions. Automatic Climate Control. Fully automatic climate control adjusts temperature and flow, and determines which air outlet is best in each situation with a touch of a button. Cab Exterior. The exterior design uses thick steel tubing along the bottom perimeter of the cab, improving the resistance of fatigue and vibration. Cab Mounts. The cab shell is attached to the frame with viscous rubber cab mounts, which dampen vibrations and sound levels while enhancing operator comfort. Windows. All glass is affixed directly to the cab for excellent visibility eliminating window frames. Wipers. Pillar-mounted wipers increase the operator s viewing area and offer continuous and intermittent modes. Skylight. An enlarged skylight with sunshade provides excellent visibility and ventilation. Monitor. The vertical monitor enhances operator visibility. The full color Liquid Crystal Display gives you vital operating and performance information, alerts in text, all in a simple, easy to navigate format while delivering the information in 27 languages. Default Display. Three analog gauges, fuel level, hydraulic oil temperature and coolant temperature, are displayed in this area. Main Menu. Four menu options to choose from: Settings Adjust monitor settings, select Economy Mode, work tool or choose video mode (when equipped with a camera) Maintenance Displays service intervals and hours accumulated since last serviced. Performance Displays machine performance attributes such as Engine Speed, Coolant and Hydraulic Oil Temperature. Service Allows access to machine parameters for service intervals, diagnostic information and information related to the machines software. Event Display. Machine information is displayed in this area with the icon and language. Multi-information Display. This area is reserved for displaying various information which is convenient for the operator. The CAT logo is displayed when no information is available to be displayed. 9
Booms, Sticks and Bucket Linkages Built for Performance and long service life, Caterpillar booms and sticks are large, welded, box-section structures with thick, multi-plate fabrications in high stress areas. Bucket Linkage. The power link improves durability, increases machine-lifting capability in key lifting positions and with the integrated lift-eye it is easier to use than compared to the previous power link. The lift eye also gives you the optimum lift performance. It allows you to lower the load point, which maximizes the use of the boom cylinders. Front Linkage Options. The Reach Boom allows excellent all-around versatility and a large working envelope. Equipped with the R2.9B1 stick, the 321D LCR performs well in a mid-range working envelope. Sticks. The sticks are made of high tensile strength steel using a large box section design with interior baffle plates and an additional bottom guard. 10
Work Tools Attachments The 321D LCR has an extensive selection of work tools to optimize machine performance. Wide Variety of Work Tools. Caterpillar offers a complete line of work tools to match all of your application needs: Hammers matched to Cat machines for optimum performance Thumbs, Stiff Link, Full Rotation transforms your excavator into a versatile material handling machine Grapples choose from a large variety of grapples that best suit your application Vibratory Plate Compactors provide superior compaction force in a reliable, low maintenance package Caterpillar Buckets. The most extensive choice of buckets that can optimize machine performance and match your application needs. General Purpose Buckets (GP) Large capacity for digging soft to hard materials, such as dirt, loam, and clay like materials. Not intended for use in abrasive materials or highimpact applications. The shallow profile optimizes bucket capacity for easy to penetrate soils. Excavation (X) and Excavation Special (XSP) for normal excavation work in soft to hard ground with moderate abrasiveness. Heavy-Duty Buckets (HD) for use in materials, such as mixed dirt, clay and rock. Aggressive bucket designed for moderate abrasive applications. The bucket is designed with increased wear material to allow for longer life in abrasive applications. Heavy-Duty Power Buckets for use in abrasive applications where breakout force and cycle times are critical good for materials such as mixed dirt, clay and rock. Ditch Cleaning Buckets wide and shallow for ditch cleaning, bank forming and finishing. Caterpillar Ground Engaging Tools (GET). Choose from a wide variety of tips that maximize bucket and machine performance. Sidecutters and sidebar protectors are also available. Pin Grabber Plus Hydraulic Pin Grabber Couplers. Multiply the versatility and utility of your excavator. Hydraulic Pin Grabber Plus allows quick and easy tool changes without having to leave the cab. Picks up a large variety of tools equipped with standard pins. Dedicated Coupler no loss of tip radius, maximizing the breakout forces of your 321D LCR. 11
Versatility A wide variety of optional factory-installed attachments are available to enhance performance and improve job site management. Auxiliary Hydraulic Options. Allows you to configure your machine to meet your work tools needs, while increasing its versatility. Single Function Circuit suited for tools that require one-way flow with both pumps, such as hammers, vibratory plate compactors. Common Function Circuit In addition to the Single Function Circuit, it features one more selection of Double Function Circuit, ideal for tools that require two-way flow and one or two pump output, such as thumbs and non-rotating shears or grapples. Two control options are available, either modulated foot pedal (right-hand side) or joystick controls (on/off, no modulation). Flows can be set through the monitor. Tool Control System accommodates single or double function tools, as well as rotating tools when equipped with medium pressure. Stores pressure and flow information for up to 10 tools Cat tools selectable that have preset flows and pressures Shortcut button on right hand console, making tool selection easier. Machine Security. An optional Machine Security System is available from the factory on the 321D LCR. This system controls when the machine can be operated and utilizes specific keys to prevent unauthorized machine use, a significant theft deterrent. Product Link. Both the PL121 and PL321 are available as factory installed attachments. PL121 gives you Asset Watch, which includes the following features: Engine hours Machine location Time based fences (when the machines can operate) Geo-based fences (boundaries that the machine can operator) PL321 gives you all of the features listed for PL121, plus the ability to include Health and Maintenance Watch. Health Watch Codes from on-board EDM s/sensors Estimated Fuel Consumption Fuel Watch Maintenance Watch Preventative Maintenance Planning Preventative Maintenance Checklists Overdue PM Notification PM History Recording More Attachments. The 321D LCR offers the most options available to equip your machine to best match the application and work environment requirements. From track shoe size to guarding packages to operator comfort. 12
Service and Maintenance Simplified service and maintenance features save you time and money. Ground Level Service. The design and layout of the 321D LCR was made with the service technician in mind. Many service locations are easily accessible at ground level allowing critical maintenance to get done quickly and efficiently. Air Filter Compartment. The air filter features a double-element construction for superior cleaning efficiency. When the air cleaner plugs, a warning is displayed on the monitor screen inside the cab. Pump Compartment. A service door on the right side allows for ground level access to the hydraulic pump, engine oil filter, case drain and pilot filters. Radiator Compartment. The air conditioning condenser swings out to allow access to the engine radiator and oil cooler. the air to air after cooler is fixed in position above the condenser. Fan Guard. Engine radiator fan is completely enclosed by fine wire mesh, reducing the risk of an accident. Greasing Points. A concentrated remote greasing block on the boom delivers grease to hard-to-reach locations on the front. Capsule Filter. The hydraulic return filter, a capsule filter, is situated outside the hydraulic tank. This filter prevents contaminants from entering the system when hydraulic oil is changed and keeps the operation clean. Diagnostics and Monitoring. The 321D LCR is equipped with S O S SM sampling ports and hydraulic test ports for the hydraulic system, engine oil, and for coolant. A test connection for the Cat Electronic Technician (Cat ET) service tool is located in the cab. Anti-Skid Plate. Anti-skid plate covers top of storage box and upper structure to prevent slipping during maintenance. Extended Service Interval. Service and maintenance intervals have been extended to reduce machine service time and increase machine availability. 13
Complete Customer Support Cat dealer services help you operate longer with lower costs. Customer Support Agreements. Cat dealers offer a variety of product support agreements, and work with customers to develop a plan the best meets specific needs. These plans can cover the entire machine, including attachments, to help protect the customer s investment. Operation. Improving operating techniques can boost your profits. Your Cat dealer has videotapes, literature and other ideas to help you increase productivity, and Caterpillar offers certified operator training classes to help maximize the return on your investment. Maintenance Services. Repair option programs guarantee the cost of repairs up front. Diagnostic programs such as Scheduled Oil Sampling, Coolant Sampling and Technical Analysis help you avoid unscheduled repairs. Replacement. Repair, rebuild, or replace? Your Cat dealer can help you evaluate the cost involved so you can make the right choice. Product Support. You will find nearly all parts at our dealer parts counter. Cat dealers utilize a worldwide computer network to find in-stock parts to minimize machine down time. Save money with remanufactured components. Machine Selection. Make detailed comparisons of the machines you are considering before you buy. What are the job requirements, machine attachments and operating hours? What production is needed? Your Cat dealer can provide recommendations. 14
Engine Engine Model Cat C6.4 ACERT Net Flywheel Power 103 kw 138 hp Net Power ISO 9249 103 kw 138 hp Net Power SAE J1349 103 kw 138 hp Net Power EEC 80/1269 103 kw 138 hp Bore 102 mm 4.02 in Stroke 130 mm 5.12 in Displacement 6.4 L 389 in 3 The C6.4 ACERT meets exhaust emissions equivalent to USA EPA Tier 2 and EU Stage II engine emissions regulations. Net flywheel power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, muffler and alternator. No engine power derated below 2300 m (7,500 ft). Hydraulic System Main Implement System 205 L/min 54 gal/min Maximum Flow (2x) Max. pressure Equipment 35 000 kpa 5,076 psi Max. pressure Heavy Lift 36 000 kpa 5,221 psi Max. pressure Travel 35 000 kpa 5,076 psi Max. pressure Swing 25 000 kpa 3,626 psi Pilot System Maximum flow 32.4 L/min 9 gal/min Pilot System Maximum pressure 3900 kpa 566 psi Boom Cylinder Bore 125 mm 4.9 in Boom Cylinder Stroke 1403 mm 55.3 in Reach Stick Cylinder Bore 140 mm 5.5 in Reach Stick Cylinder Stroke 1504 mm 59.2 in B1 Family Bucket Cylinder Bore 120 mm 4.7 in B1 Family Bucket Cylinder Stroke 1104 mm 43.5 in Weights Operating Weight 23 600 kg 52,040 lb Reach boom, R2.9B1 (9 ft 6 in) Stick, 0.8 m 3 (1.0 yd 3 ) Bucket, 600 mm (24 in) Shoes Service Refill Capacities Fuel Tank Capacity 330 L 87 gal Cooling System 25 L 6.6 gal Engine Oil 30 L 8 gal Swing Drive 8 L 2.1 gal Final Drive (each) 10 L 2.6 gal Hydraulic System (including tank) 208 L 55 gal Hydraulic Tank 120 L 32 gal Hydraulic Tank (Including 133 L 35 gal suction pipe) Swing Mechanism Swing Speed 11.5 rpm Swing Torque 61.8 kn m 45,612 lb ft Drive Sound Performance Performance ANSI/SAE J1166 OCT 98 When properly installed and maintained, the cab offered by Caterpillar, when tested with doors and windows closed according to ANSI/SAE J1166 OCT 98, meets OSHA and MSHA requirements for operator sound exposure limits in effect at time of manufacture. Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in noisy environment. Standards Brakes Cab/FOGS Track Number of Shoes Each Side 49 Long Undercarriage Number of Track Rollers Each 8 Side Long Undercarriage Number of Carrier Rollers Each 2 Side Long Undercarriage SAE J1026 APR90 SAE J1356 FEB88 Maximum Drawbar Pull 206 kn 46,300 lb Maximum Travel Speed 5.7 km/h 3.5 mph 321D LCR Hydraulic Excavator specifications 15
Dimensions Reach Boom 5.7 m (18'7") All dimensions are approximate. 9 2 3 10 1 11 12 7 8 6 4 5 Boom Reach 5.7 m (18'7") Stick Stick R2.9B1 (9'7") 1 Shipping Height* 3030 mm (9'11") 2 Shipping Length 8830 mm (29'0") 3 Tail Swing Radius 1680 mm (5'6") 4 Length to Center of Rollers 3650 mm (12'0") 5 Track Length 4455 mm (14'7") 6 Ground Clearance** 450 mm (1'6") 7 Track Gauge 2380 mm (7'10") 8 Track Width*** 2980 mm (9'9") 9 Body Width 2980 mm (9'9") 10 Cab Height* 2980 mm (9'9") 11 Engine Hood Height* 2315 mm (7'7") 12 Counterweight Clearance** 1020 mm (3'4") *** Includes 30 mm (1 in) shoe lug height. *** Without 30 mm (1 in) shoe lug height. *** Track width shown is for 600 mm (24") track shoes for long undercarriage. 16 321D LCR Hydraulic Excavator specifications
Working Range Reach Boom 5.7 m (18'7") Boom Reach 5.7 m (18'7") Stick R2.9B1 (9'7") 1 Maximum Digging Depth 6630 mm (21'9") 2 Maximum Reach on Ground 9710 mm (31'10") 3 Maximum Loading Height 7970 mm (26'2") 4 Minimum Loading Height 3040 mm (10'0") 5 Maximum Vertical Wall Digging Depth 5950 mm (19'6") 6 Minimum Front Swing Radius 2340 mm (7'8") 7 Maximum Reach 9900 mm (32'6") 8 Maximum Cutting Height 10 930 mm (35'10") 9 Maximum Digging Depth 2440 mm (8') Level Bottom 6450 mm (21'2") Bucket Digging Force (ISO) 149 kn (35,000 lb) (SAE) 131 kn (29,450 lb) Stick Digging Force (ISO) 109 kn (24,504 lb) (SAE) 105 kn (23,605 lb) 321D LCR Hydraulic Excavator specifications 17
Major Component Weights Base machine with counterweight (without front linkage) Long undercarriage with 600 mm triple grouser shoes 19 830 kg 43,720 lb Long undercarriage with 800 mm triple grouser shoes 20 490 kg 45,180 lb Counterweight 6100 kg 13,450 lb Boom Two boom cylinders (each) 215 kg 475 lb Reach boom (includes lines, pins, and stick cylinder) 5.7 m (18'7") 1660 kg 3,660 lb Stick (includes lines, pins, bucket cylinder and linkage) R2.9B1 (9'7") 980 kg 2,160 lb All weights are approximate. 321D LCR Work Tool Matching Guide Boom Options Reach Boom 5.7 m (18'7") Stick Options R2.9B1 (9'7") Hydraulic Hammer H115s/ H120Cs/ H130s Vibratory Plate Compactor CVP110 Trash Grapple 2.7 m 3 (3.5 yd 3 ) Contractor s Grapple yes Hydraulic Thumb yes Dedicated Quick Coupler yes Pin-Grabber Quick Coupler yes 18 321D LCR Hydraulic Excavator specifications
321D LCR Bucket Options Weight Reach Capacity Width Tip Radius (with tips) Teeth Boom m 3 yd 3 mm in mm in kg lb Qty R2.9B1 Stick B1 Family Excavation 0.8 1.0 1000 39.4 1497 58.9 675 1,488 5 s 0.9 1.2 1120 44.1 1497 58.9 715 1,576 5 s Excavation Special 0.8 1.0 1990 39.0 1508 59.4 765 1,687 5 s 0.9 1.2 1110 43.7 1508 59.4 830 1,830 5 n General Purpose 0.9 1.2 1224 48.2 1480 58.3 772 1,702 6 s 1.0 1.3 1224 48.2 1580 62.2 795 1,753 6 s Heavy Duty 1.0 1.3 1072 42.2 1577 62.1 866 1,909 5 n Assumptions for maximum material density rating: 1. Front Linkage fully extended at ground line 2. Bucket Curled 3. 100% Bucket Fill Factor s 2100 kg/m 3 (3,500 lb/yd 3 ) max material density n 1800 kg/m 3 (3,000 lb/yd 3 ) max material density 321D LCR Hydraulic Excavator specifications 19
Reach Boom Lift Capacity Load Point Height Load Radius Over Front Load Radius Over Side Load at Maximum Reach STICK 2.9 m (9'7") BUCKET 0.8 m 3 (1.05 yd 3 ) UNDERCARRIAGE Long SHOES 600 mm (24") triple grouser BOOM 5.7 m (18'7") 1.5 m (5.0 ft) 3.0 m (10.0 ft) 4.5 m (15.0 ft) 6.0 m (20.0 ft) 7.5 m (25.0 ft) 9.0 m kg *2400 *2400 6.34 30.0 ft lb *5,350 *5,350 20.17 7.5 m kg *4550 *4550 *2150 *2150 7.86 25.0 ft lb *9,400 *9,400 *4,700 *4,700 25.47 6.0 m kg *5100 *5100 *5000 4800 *3550 3150 *2050 *2050 8.77 20.0 ft lb *11,100 *11,100 *10,950 10,300 *6,550 *6,550 *4,500 *4,500 28.64 4.5 m kg *7550 *7550 *6450 *6450 *5650 4650 *5200 3150 *2050 *2050 9.31 15.0 ft lb *13,950 *13,950 *12,250 9,950 *10,950 6,700 *4,500 *4,500 30.47 3.0 m kg *13 350 *13 350 *8450 6950 *6550 4400 5150 3050 *2150 2000 9.53 10.0 ft lb *28,450 *28,450 *18,150 14,950 *14,200 9,450 11,050 6,450 *4,650 4,350 31.25 1.5 m kg *5400 *5400 *10 250 6400 7200 4150 5050 2900 *2300 1950 9.47 5.0 ft lb *12,800 *12,800 *22,050 13,800 15,450 8,900 10,800 6,200 *5,000 4,300 31.08 Ground kg *6950 *6950 *11 200 6100 7000 3950 4900 2800 *2550 2050 9.13 Line lb *15,800 *15,800 24,100 13,050 15,000 8,500 10,550 6,000 *5,650 4,500 29.94 1.5 m kg *6350 *6350 *10 550 *10 550 11 100 5950 6900 3850 4900 2750 *3050 2350 8.46 5.0 ft lb *14,200 *14,200 *23,950 *23,950 23,800 12,800 14,750 8,300 10,450 5,950 *6,700 5,150 27.71 3.0 m kg *10 450 *10 450 *14 800 11 950 *10 350 6000 6900 3900 *3900 2950 7.37 10.0 ft lb *23,400 *23,400 *32,000 25,600 *22,350 12,950 14,850 8,350 *8,700 6,550 24.05 4.5 m kg *11 600 *11 600 *8250 6250 *4100 *4100 5.61 15.0 ft lb *24,800 *24,800 *17,550 13,400 *8,950 *8,950 18.14 * Limited by hydraulic capacity rather than tipping load. The above loads are in compliance with SAE hydraulic excavator lift capacity rating standard J1097. They do not exceed 87% of hydraulic lifting capacity or 75% of tipping capacity. Weight of all lifting accessories must be deducted from the above lifting capacities. Always refer to the appropriate Operation and Maintenance Manual for specific product information. m ft 20 321D LCR Hydraulic Excavator specifications
Standard Equipment Standard equipment may vary. Consult your Caterpillar dealer for details. Upper Structure Electrical 50 Ampere alternator Light, storage box mounted (one) Signaling/Warning horn Engine C6.4 with ACERT Technology 2300 m (7,500 ft) altitude capability without derate 2 micron fuel filter Air intake heater Equivalent EU Stage II/US EPA Tier 2 Emission compliant Automatic engine speed control with one touch low idle Automatic swing parking break Boom drift reducing valve Boom lowering device for back-up Capability of installing additional auxiliary pump and circuit Capability of installing boom lowering control device and stick lowering control device Capability of installing Cat Bio hydraulic oil Capability to electrically connect a beacon Capability of installing stackable valves for main valve Caterpillar one key security system Circuit breaker Counterweight Door locks and cap locks High performance hydraulic return filter Hydraulic main pump SBS 120 Light, Control Valve cover mounted (one) Mirrors, rearview (upper frame-rear) Product Link Ready (PL300: Gateway type) Radial seal air filter Regeneration circuit for boom and stick Reverse swing damping valve Secondary engine shutoff switch Stick drift reducing valve Two-speed travel Water separator in fuel line Waved fin radiator w/enough space for cleaning operation Undercarriage Idler and center section track guiding Towing eye on baseframe Operator Station Cab Adjustable armrest Antenna and harness (without radio speakers) Ashtray and lighter Beverage/cup holder Bi-level air conditioner with defroster Bolt-on Falling object Guarding System (FOGS) capability Capability of installing two additional pedals Coat hook Control lever joystick Front guard boss Front windshield glass spilt 70/30 Laminated front windshield and tempered other windows or Polycarbonate windows for others Light, interior Literature compartment Mounting for two stereo speakers (two locations) Neutral lever (lock out) for all controls Openable front windshield with assist device Openable skylight Pillar mounted upper windshield wiper and washer Positive filtered ventilation Pressurized cab with air conditioner Radio mounting (DIN size) Rear window, emergency exit Removable lower windshield with in-cab storage bracket Seat belt, retractable (two inch or three inch width) Seat suspension, four-way adjustable low back or high back with integrated, adjustable console (select one) Sliding upper door window Start switch panel Storage compartment suitable for lunch box Travel control pedals with removable hand levers Utility space for magazine Washable floor mat Monitor Economy mode Full time clock Language display, full graphical display Machine condition, error code and tool mode setting Start-up level check for hydraulic oil, engine oil and coolant Warning information, filter/fluid change information and working hour 321D LCR Hydraulic Excavator specifications 21
Optional Equipment Optional equipment may vary. Consult your Caterpillar dealer for details. Front Linkage Booms Reach 5.7 m (18 ft 7 in) Sticks Reach 2.9 m (9 ft 7 in) Bucket Linkage B1 Family Electrical Light, Boom Right side Lights, Cab mounted (2) Machine Security System (MSS) Power supply (12V-5 AMP) Product Link (PL121SR/PL321SR) Travel Alarm Guarding Falling Object Guarding System (FOGS) Front windshield guard Full length, wire mesh Heavy-duty bottom guards Track guiding guards Sprocket end, idler end guard Two-piece full length (center guard removed) Vandalism guards Operator Environment Hand control pattern changer (4-way) Seat, high back with air suspension and heater Seat, high back with mechanical suspension Seat, low back with mechanical suspension Seat, static low back Engine/Power Train Starting, Cold weather package 25 C ( 13 F) Water level indicator (Fuel) Undercarriage Track shoes 600 mm (24 in) triple grouser 700 mm (28 in) triple grouser 800 mm (32 in) triple grouser Auxiliary Hydraulics Capability of adding medium pressure Combined Circuit For single/double function (1 or 2 way/1 or 2 pump) hydraulic tools Hammer Circuit For single function (1 way/2 pump) hydraulic tools Joysticks with additional switches Lines for booms and sticks Medium pressure circuit for tools requiring medium pressure Work Tools Wide offering of buckets, tips and sidecutters 22 321D LCR Hydraulic Excavator specifications
Notes 321D LCR Hydraulic Excavator specifications 23
321D LCR Hydraulic Excavator For more complete information on Cat products, dealer services, and industry solutions, visit us on the web at www.cat.com 2007 Caterpillar All Rights Reserved Printed in U.S.A. Materials and specifications are subject to change without notice. Featured machines in photos may include additional equipment. See your Caterpillar dealer for available options. AEHQ5894 (6-07) APD CAT, CATERPILLAR, their respective logos, ACERT, Caterpillar Yellow and the POWER EDGE trade dress, as well as corporate and product identity used herein, are trademarks of Caterpillar and may not be used without permission. R