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312E
Hydraulic Excavator
Engine
Engine Model |
Cat® C4.4 ACERT™ |
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Net Power – SAE J1349 |
68 kW |
91 hp |
Gross Power – SAE J1995 |
71 kW |
95 hp |
Drive
Maximum Travel Speed |
5.5 km/h |
3.4 mph |
Maximum Drawbar Pull |
114 kN |
25,628 lbf |
Weight |
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Minimum Operating Weight |
13 500 kg |
29,770 lb |
Maximum Operating Weight |
15 000 kg |
33,080 lb |
Introduction
Since its introduction in the 1990s, the 300 Series family of excavators has become the industry standard in general, quarry, and heavy construction applications. The all-new E Series and the 312E will continue that trend-setting standard.
The 312E meets today’s U.S. EPA Tier 4 Interim emission standards. It is also built with several new fuel-saving and comfort-enabling features and benei ts that will delight owners and operators.
If you are looking for more productivity and comfort, less fuel consumption and emissions, and easier and more sensible serviceability, you will i nd it in the all-new 312E and the E Series family of excavators.
Contents
Engine ................................................................... |
3 |
Operator Station.................................................. |
4 |
Hydraulics ............................................................ |
5 |
Structures & Undercarriage ............................. |
6 |
Front Linkage ....................................................... |
7 |
Work Tools............................................................ |
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Integrated Technologies.................................. |
10 |
Serviceability..................................................... |
11 |
Safety.................................................................. |
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Complete Customer Care................................. |
13 |
Sustainability ..................................................... |
14 |
Speciications.................................................... |
15 |
Standard Equipment......................................... |
31 |
Optional Equipment........................................... |
32 |
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Engine
Reduced emissions, economical and reliable performance
Cat® C4.4 ACERT™ Engine
The Cat C4.4 ACERT engine delivers the same level of performance using signiicantly less fuel than the previous series engine.
Emissions Solution
Equipped to meet U.S. EPA Tier 4 Interim emission standards, the 312E’s C4.4 ACERT engine features an aftertreatment regeneration solution that ensures the machine works as normal with no operator intervention needed.
Biodiesel-Ready Fuel System
The C4.4 ACERT engine is equipped with an electroniccontrolled high-pressure fuel system that includes an electric priming pump and three-layer fuel hoses to allow the use
of biodiesel (meeting ASTM 6751 or EN 14214) up to B20 (biodiesel 20% mixture).
Cooling System
The cooling system features an air-to-air aftercooler and A/C condenser that tilt up and swing out of the way for easy servicing.
Speed and Power Control
The 312E features speed control to maximize performance while minimizing fuel consumption. Two different power modes are offered: high power mode when you need maximum production; economy mode when you need performance with the lowest fuel consumption. The operator can easily change between modes through the console switch panel
to meet the needs for the job at hand – all to help manage and conserve fuel.
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Operator Station
Comfort and convenience to keep people productive
Seats
The seat range includes air suspension, heated, and air cooled options. All seats include a reclining back, upper and lower seat slide adjustments, and height and tilt angle adjustments to meet operator needs for comfort and productivity.
Controls
The right and left joystick (1) consoles can be adjusted to meet individual preferences, improving operator comfort and productivity during the course of a day. With the touch of a button, one-touch idle reduces engine speed to help save fuel; touch it again or move the joystick and the machine returns to normal operating level.
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Monitor |
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The 312E is equipped with a 7" LCD (Liquid Crystal Display) |
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monitor (2) that is 40% bigger than the previous model’s with |
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higher resolution for better visibility. In addition to an improved |
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keypad and added functionality, it’s programmable to provide |
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information in a choice of 44 languages to support today’s |
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diverse workforce. |
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An “Engine Idle Shutdown” setting accessible through the |
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monitor, allows owners and operators to specify how long |
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the machine should idle before shutting down the engine, |
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which can save signiicant amounts of fuel. |
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The image of the rearview camera is displayed directly on the |
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monitor, which will help keep you focused on the job at hand. |
Power Supply
Two 12-volt power supply sockets are located near key storage areas for charging electronic devices such as an MP3 player and cell phone.
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Storage |
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Storage spaces are located in the front, rear, and side consoles. |
A dedicated space near the auxiliary power supply holds MP3 |
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players and cell phones. The drink holder accommodates |
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large mugs with handles, and a shelf behind the seat stores |
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large lunch or toolboxes. |
Automatic Climate Control
The climate control system features ive air outlets with positive iltered ventilation, which makes working in the heat and cold much more pleasant.
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Hydraulics
Power to move more dirt, rock, and debris with speed and precision
Main Control Valve and Auxiliary Valves
The 312E uses a high-pressure system to tackle the toughest of work in short order. The machine features a highly eficient and simple main control valve to improve fuel consumption; it also allows for greater tool versatility.
Electric Boom Regeneration System
The 312E regenerates the low of oil from the head end of the boom cylinder to the rod end of the boom cylinder during a boom down operation to save energy, which helps improve fuel eficiency. It is optimized for any dial speed setting being used by the operator, which results in less pressure loss for higher controllability, more productivity, and lower operating costs.
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Structures & Undercarriage
Built to work in rugged environments
Frame
The upper frame includes reinforced mountings to support the Roll-Over Protective Structure (ROPS) cab; the lower frame is reinforced to increase component durability.
Undercarriage
Long undercarriage supports various work applications. The track rollers are a double solid-pin-type design to improve reliability compared to the single solid-pin-type design. A segmented two-piece guiding guard is now offered to help maintain track alignment and improve performance in multiple applications.
Counterweight
Built with an integrated rearview camera housing, the counterweight comes with integrated links to enable easy removal for maintenance or shipping.
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Front Linkage
Made for high stress and long service life
Booms and Sticks
The 312E is offered with a reach boom and three stick conigurations: R2.5 m (8'2"), R2.8 m (9'2"), and R3.0 m (9'10"). Also, a new thumb-ready stick with factory brackets and structural reinforcement to attach a Cat hydraulic thumb to the
machine is an available option. Each boom and stick is built with internal bafle plates for added durability, and each undergoes ultrasound inspection to ensure weld quality and reliability.
Reach coniguration balances digging force and bucket capacity. It covers all applications this size of machine was designed to take on such as digging, loading, trenching, and working with hydraulic tools.
Large box-section structures with thick, multi-plate fabrications, castings, and forgings are used in high-stress areas such as the boom nose, boom foot, boom cylinder, and stick foot to improve durability. Also, the front linkage pins’ inner bearing surfaces are welded with a self-lubricated bearing used to extend service intervals and increase uptime.
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Work Tools
Dig, hammer, rip, and cut with conidence
An extensive range of Cat Work Tools for the 312E includes buckets, compactors, grapples, scrap and demolition shears, hammers and thumbs. Each is designed to optimize the versatility and performance of your machine.
Quick Couplers
Quick couplers allow one person to change work tools in seconds for maximum performance and lexibility on a job site. One machine can move rapidly from task to task, and a leet of similarly equipped machines can share a common work tool inventory.
Cat Center-Lock™ Pin Grabber Coupler
Center-Lock is the pin grabber style of coupler featuring a patented locking system. A highly visible lock clearly shows the operator when the coupler is engaged or disengaged from the bucket or work tool.
Buckets
Cat buckets are designed as an integral part of the 312E system and feature new geometry for better performance. The leading edge has been repositioned, resulting in
more eficient illing and better operator control for greatly improved productivity. Greater wear coverage in the corners, greater side cutter and sidebar protector coverage, and a new lift eye design are features of Next Generation buckets. All beneits are captured in a new bucket line with a new bucket naming convention.
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Durability Categories Suitable for Any Situation
Caterpillar offers standard bucket categories for excavators. Each category is based on intended bucket durability when used in recommended applications and materials. Each bucket durability is available as pin-on or can be used with a quick coupler.
General Duty (GD)
GD buckets are for digging in low-impact, low-abrasion material such as dirt, loam, and mixed compositions
of dirt and ine gravel.
Severe Duty (SD)
SD buckets are for higher abrasion conditions such as well shot granite and caliche. Red area on bucket image illustrates additional protection against wear as compared to a GD bucket.
Specialty Buckets
In addition to standard bucket categories, specialty bucket styles are available for the 312E, each with a different purpose:
•Ditch Cleaning and Tilt buckets are for cleaning ditches, slope grading, and other inish work.
•Wide Tip buckets are for low impact material where leaving a smoother loor and minimal spillage are necessary.
Hydraulic Kits
Caterpillar offers ield-installed hydraulic kits that are uniquely designed to integrate Cat Work Tool attachments with Cat excavators. Hoses and tubes are pre-made, pre-shaped, and pre-painted to make installation quick and easy.
Comprehensive Product Support
All Cat Work Tools are backed up by a world-wide network of well-stocked parts depots and highly experienced service and support personnel.
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2 |
1) General Duty |
2) Severe Duty |
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1
Integrated Technologies
Solutions that make work easier and more eficient
Cat® Grade Control Depth and Slope
This optional system combines traditional machine control and guidance with standard factory-installed and calibrated components, making the system ready to go to work the moment it leaves the factory. The system utilizes internal front linkage sensors – well protected from the harsh working environment – to give operators real-time bucket
tip position information through the cab monitor (1), which minimizes the need and cost for traditional grade checking and enhances job site safety. It also helps the operator complete jobs in fewer cycles, which
means less fuel use. Cat dealers can upgrade the system to full three- 2 dimensional control by adding proven Cat AccuGrade™ positioning
technologies, including GPS and Universal Total Station (UTS).
Cat Product Link
This optional system is deeply integrated into the machine monitoring system and is designed to help customers improve their overall leet management effectiveness. Events and diagnostic codes as well as hours, fuel consumption, idle time, machine location, and other detailed information are transmitted to a secure web based application (2 and 3) called VisionLink™, which uses powerful tools to communicate to users and dealers.
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Serviceability
Fast, easy and safe access built in
Service Doors
Wide service doors feature sturdier hinges and latches and a new screen design to help prevent debris entry;
a one-piece hood (1) provides easier access to the engine and cooling compartments.
Compartments
The radiator (2), pump (3), and air cleaner compartments provide easy access to major components. The fresh air ilter is located on the side of the cab to make it easy
to reach and replace as needed.
Other Service Beneits
The water separator with water level sensor has a primary
fuel ilter element located in the pump compartment near 1 ground level; the electric priming pump is mounted before
the primary ilter base and is easy to service compared to a traditional hand-priming pump.
The fuel tank features a remote drain cock located in the pump compartment to make it easy to remove water and sediment during maintenance.
The engine oil check gauge is situated in front of the engine compartment for easy access, and a uniquely designed drain cock helps prevent spills.
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