Overview
Increased horsepower, better controllability, extended service intervals and a redesigned operator station increase your productivity and lower your operating costs.
Specifications
| Engine Model | Cat® 3064T |
| Flywheel Power | — |
| Operating Weight | — |
Benefits & Features
Specifications
| Engine Model | Cat® 3064T |
| Flywheel Power | — |
| Gross Power | — |
| ISO 9249 | — |
| SAE J1349 | — |
| EEC 80/1269 | — |
| Bore | — |
| Stroke | — |
| Displacement | — |
| Operating Weight | — |
| Operating Weight - Standard Undercarriage | — |
| Swing Torque | — |
| Swing Speed | — |
| Maximum Drawbar Pull | — |
| Travel Speed | — |
| Main Implement System - Maximum Flow (2x) | — |
| Maximum Pressure - Implements | — |
| Maximum Pressure - Travel | — |
| Maximum Pressure - Swing | — |
| Pilot System - Maximum Flow | — |
| Pilot System - Maximum Pressure | — |
| Blade - Maximum Flow | — |
| Blade System - Maximum Pressure | — |
| Boom Cylinder - Bore | — |
| Boom Cylinder - Stroke | — |
| Stick Cylinder - Bore | — |
| Stick Cylinder - Stroke | — |
| Bucket Cylinder - Bore | — |
| Bucket Cylinder - Stroke | — |
| Fuel Tank | — |
| Cooling System | — |
| Engine Oil | — |
| Swing Drive - Each | — |
| Final Drive - Each | — |
| Hydraulic System - Including Tank | — |
| Hydraulic Tank | — |
| Transport Width | — |
| Shipping Height | — |
| Length - Center of Rollers | — |
Benefits & Features
Engine
Torque Rise
The engine is designed for high torque rise at middle rpm, a feature that is especially beneficial for heavy-duty use.
Cylinder Block
The cylinder block is cast iron for improved wear resistance. The upper part is laser hardened to reduce oil consumption and internal component wear.
Maintenance
The oil level gauge, oil filter, fuel filter and priming pump are located on the right side of the upper structure for easy maintenance. The engine oil filter and fuel filter change intervals have been extended.
Crankshaft
The eight balance, one-piece, forged crankshaft enhances balance and decreases vibration and is induction hardened to improve abrasion resistance.
Pistons
Heat resistant aluminum alloy pistons have a short compression height, reducing weight and improving efficiency.
Fuel Consumption
The 3064 T engine has the best fuel consumption in this class of diesel engines. It features improved thermal efficiency and reduced friction resistance between piston and liners.
Air Intake Heating
Air intake heating is standard on the 311C U for easier cold starts.
Hydraulics
Component Layout
The 311C U hydraulic system was designed to provide a high level of efficiency. With all major components located close together, shorter tubes and lines are needed, resulting in less friction loss in the lines and reduced pressure drops.
Hydraulic Cross Sensing System
Improves productivity with faster implement speeds and quicker, stronger pivot turns.
Automatic Boom and Swing Priority
For simpler operation, work mode and power mode switches have been eliminated. Instead, the automatic boom and swing priority function selects the best mode, based on joystick movement.
Stackable Valves
Up to two additional control valves can be added to the main control valve of the 311C U to run additional tools.
Controllability
The hydraulic system offers precise control to the 311C U, reducing operator fatigue, improving operator effectiveness and efficiency, which ultimately translates into enhanced performance.
Auxiliary Hydraulic Valve
For further versatility, a dedicated hammer (single function), thumb (double function), and combined auxiliary hydraulics are offered on the 311C U.
Hydraulic Snubbers
Hydraulic cylinder snubbers at the rod-end of boom cylinders and both ends of the stick cylinders cushion shocks, reduce sound and increase cylinder life.
Undercarriage and Structures
Structures
The 311C U structural components and undercarriage are the backbone of the machine's durability.
Carbody Design and Track Roller Frames
X-shaped, box-section carbody provides excellent resistance to torsional bending. Robot-welded track roller frames are press-formed, pentagonal units to deliver exceptional strength and service life.
Rollers and Idlers
Sealed and lubricated track rollers, carrier rollers and idlers provide excellent service life, to keep the machine in the field longer.
Main Frame
The rugged main frame is designed for maximum durability and efficient use of materials.
Grease Lubricated Track
New grease lubricated seals protect the track link and deliver long track link pin and bushing inner wear life.
Travel Motors
Automatic speed selection enables the machine to automatically change up and down from high and low speeds in a smooth, controlled manner.
Idler Guard
An idler guard, which is integral to the track roller frame, is standard. This guard helps maintain track alignment while traveling or working on slopes.
Blades
For further versatility and to meet more general purposes needs, three blade width options are available on the 311C U.
Shorter Tail Swing Radius
The 311C U, with its reduced tail swing radius, is easier to operate while against walls and in tight areas, reducing the concern of the rear of the machine during operation. The shorter tail measurement allows flexibility for ideal use in urban construction, logging roads, and other space restricted sites.
Front Linkage
Front Linkage
Front linkage variations on the 311C U allow for the use of one boom, two sticks and five buckets. Using these combinations improves the general-purpose versatility of the 311C U by suiting it to a diverse range of applications.
Boom
The boom on the 311C U is designed to provide maximum digging capability. Caterpillar booms are manufactured with high-tensile steel for upper, lower and side plates and robot welded for consistent quality.
Stick
Two sticks are available on the 311C U. The customer's working envelope and bucket capacity needs determine their stick choice.
Boom and Stick Construction
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.
Buckets
High tensile strength steel is used in high-stress areas for excellent wear and shock resistance. The excavation bucket is designed for general-purpose excavation and to have a large bucket capacity and tip radius.
Bucket Linkage
The bucket linkage on the 311C U includes the bucket cylinder, idler link and power links.
Linkage Bearings
New bearing technology has extended the front linkage greasing intervals for all bearings.
Operator Station
Operator Environment
The 311C U operator work station is quiet with ergonomic control placement and convenient adjustments, low lever and pedal effort, ergonomic seat design and highly efficient ventilation.
Monitor
The 311C U's newly designed and conveniently located monitor allows the operator to monitor machine performance while sitting in a comfortable position.
Automatic Boom and Swing Priority Function
For simpler operation, work mode and power mode switches have been eliminated. Instead, the automatic boom and swing priority function selects the best mode, based on joystick movement.
Redesigned Layout
Redesigned cab layout emphasizes simplicity and ease of use. Right-hand wall and console provide easy access to all switches, dials and controls.
Travel Controls
A large rubber-covered footrest at the side of the travel pedals allows the foot to easily grip the pedal. The travel lever stroke and force have been enhanced to improve the 311C U's fine controllability, making the machine easier to operate.
Seat
A new seat with a two-tone color offers two types of cushions - soft and firm - for operator comfort. The reclining knob is located at the right-side of the seat for easier reclining adjustment.
Automatic Climate Control
Fully automatic climate control adjusts temperature and flow and determines which air outlet is best in each situation.
Skylight
A large polycarbonate skylight delivers excellent natural lighting and good ventilation. Standard sliding sunshade protects from direct sunlight.
Cab Exterior
The 311C U's cab is newly designed using asymmetrical steel tubing for improved resistance to fatigue and vibration. Falling Object Guard System (FOGS) may be bolted-on directly to the cab.
Cab Mounts
The cab shell is attached to the frame with improved viscous mounts, reducing vibration and sound.
Wiper
With continuous and intermittent modes, the wiper is positioned on the right cab pillar to further improve the operator's viewing area.
Clear View Over the Engine
The engine hood has been lowered, improving the operator's rear viewing area.
Hydraulic Actuation Control Lever
For easy access, a larger hydraulic actuation control lever is attached to the cab floor.
Upper Front Windshield
The upper front windshield opens, closes and stores on the roof above the operator.
Lower Front Windshield
The lower front windshield glass features a rounded design that maximizes downward viewing.
Serviceability
Extended Service Intervals
311C U service and maintenance intervals have been extended to reduce machine service time and increase machine availability.
Radiator Compartment
The left rear service door allows easy access to the engine radiator and the oil cooler. A reserve tank and drain cock are attached to the radiator for simplified maintenance.
Air Filter Compartment
The air filter features a double-element construction for superior cleaning efficiency. When the air cleaner plugs, a red warning sign appears on the indicator near the air cleaner.
Ground Level Service
The design and layout of the 311C U 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.
Pump Compartment
A service door on the right side of the upper structure allows ground-level access to the pump and pilot filter.
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.
Anti-Skid "Punched-Star" Plate
Anti-skid punched-star plate covers the maintenance walkway to prevent slipping. The plate can be removed for cleaning.
Engine Inspection
The engine can be accessed from the upper structure or from under the machine. The engine and pump compartment are separated by a steel wall.
Handrails and Steps
Larger handrails and steps assist the operator in climbing on and off the machine.
Grease Lubricated Track
Grease lubricated seals protect the track link and deliver long track link pin and bushing inner wear life.
Fan Guard
The engine radiator fan is completely enclosed by fine wire mesh, reducing the risk of an accident.
Complete Customer Support
Selection
Make detailed comparisons of the machines you are considering before you buy. What are the job requirements? What production is needed? What is the true cost of lost production? Your Cat dealer can give you precise answers to these questions.
Purchase
Look past initial price, look at the value the 311C U offers. Consider the financing options available as well as day-to-day operating costs.
Operation
Improving operating techniques can boost your profits. Your Cat dealer has training literature and other ideas to help you increase productivity.
Maintenance
Repair option programs guarantee the cost of repairs up front. Diagnostic programs such as Scheduled Oil 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. You will save money with remanufactured components.
Data not available.
Standard Equipment
- Cab
- - AM/FM radio, 24-volt
- - Ashtray with cigar lighter
- - Air Conditioner with defroster
- - Drink holder
- - Floor mat
- - Horn
- - Hydraulic neutralizer lever for all controls
- - Instrument panel and gauges
- - Joysticks, adjustable pilot-operated
- - Light, interior
- - Light, box mounted (1)
- - Literature holder
- - Openable front windshield
- - Openable skylight
- - Suspension seat
- - Travel control pedals with removable hand levers
- Powertrain
- - Cat 3064T diesel engine
- - Water separator
- Undercarriage
- - 20" (500 mm) triple grouser shoes
- - Hydraulic track adjusters
- - Idler section track guiding guards
- - Track-type undercarriage with grease lubricated seals
Optional Equipment
- Stick and boom combinations:
- - 14'1" (4.3 m) boom with left side light
- - 9'2" (2.8 m) stick
- - 7'5" (2.25 m) stick
- Track:
- - 24" (600 mm) triple grouser shoes
- - 28" (700 mm) triple grouser shoes
- - 30" (770 mm) triple grouser shoes
- - 20" (500 mm) segment rubber track
Related Products
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Cat small excavators are perfect for smaller jobs and applications with space constraints. Powered by fuel-efficient engines and advanced hydraulic systems, our small excavators offer exclusive Cat technology and a variety of matching Cat attachments to help you complete your work on time at a low cost per hour.
| Model | Engine Model | ||
|---|---|---|---|
| 311D LRR | Cat® C4.2 ACERT™ | — | — |