Milton-cat 312E User Manual Page 1

312E Hydraulic Excavator Engine Drive Engine Model Cat® C4.4 ACERT™ Maximum Travel Speed 5.5 km/h 3.4 mph Net Power – SAE J1349 68 kW 91 hp Ma

1 Integrated Technologies Solutions that make work easier and more efcient Cat® Grade Control Depth and Slope This optional system combines tradit

Serviceability Fast, easy and safe access built in Service Doors Wide service doors feature sturdier hinges and latches andanew screen design t

Safety Features to help protect people 1 2 3 ROPS Cab The ROPS-certied cab (1) allows an Operator Protective Guardto be bolted directly t

Complete Customer Care Service you can count on Product Support Cat dealers utilize a worldwide parts network to maximize your machines’ uptime. P

Sustainability Generations ahead in every way • The C4.4 ACERT engine, along with the Cat Clean Emissions Module (CEM), meets U.S. EPA Tier

* 312E Hydraulic Excavator Specications Engine Hydraulic System Service Re ll Capacities Engine Model Cat® C4.4 ACERT™ Main System – 254 L

312E Hydraulic Excavator Specications Dimensions All dimensions are approximate. 3 9 1 10 6 7 4 5 8 2 Reach Boom 4.65 m (15'3") Stick R

Working Ranges All dimensions are approximate. Feet Meters 35 11 10 30 9 25 7 8 20 6 15 4 5 3 5 10 1 2 3 4 5 15 10 5 0 0 5 4 3 2 1 1 7 2 6 R3.0 (9&ap

312E Hydraulic Excavator Specications Operating Weight and Ground Pressure Long Undercarriage without Blade 770 mm (30") 700 mm (28")

Bucket and Stick Forces Reach Boom 4.65 m (15'3") Stick R3.0 R2.8 R2.5 (9'10") (9'2") (8'2") kN (lbf) k

2Introduction Since its introduction in the 1990s, the 300 Series family of excavators has become the industry standard in general, quarry, and heavy

312E Hydraulic Excavator Specications Reach Boom Lift Capacities Load Point Height Load at Maximum Reach Load Radius Over Front Load Radius Ove

Reach Boom Lift Capacities Load Point Height Load at Maximum Reach Load Radius Over Front Load Radius Over Side Boom – 4.65 m (15'3") C

312E Hydraulic Excavator Specications Reach Boom Lift Capacities Load Point Height Load at Maximum Reach Load Radius Over Front Load Radius Ove

Reach Boom Lift Capacities Load Point Height Load at Maximum Reach Load Radius Over Front Load Radius Over Side Boom – 4.65 m (15'3") C

312E Hydraulic Excavator Specications Reach Boom Lift Capacities Load Point Height Load at Maximum Reach Load Radius Over Front Load Radius Ove

Reach Boom Lift Capacities Load Point Height Load at Maximum Reach Load Radius Over Front Load Radius Over Side Boom – 4.65 m (15'3") C

312E Hydraulic Excavator Specications Reach Boom Lift Capacities Load Point Height Load at Maximum Reach Load Radius Over Front Load Radius Ove

Reach Boom Lift Capacities Load Point Height Load at Maximum Reach Load Radius Over Front Load Radius Over Side Boom – 4.65 m (15'3") C

312E Hydraulic Excavator Specications Reach Boom Lift Capacities Load Point Height Load at Maximum Reach Load Radius Over Front Load Radius Ove

Work Tool Offering Guide* Boom Type Reach Boom Stick Size R3.0 (9'10") R2.8 (9'2") R2.5 (8'2") Hydraulic Hammer H

Engine Reduced emissions, economical and reliable performance Cat® C4.4 ACERT™ Engine The Cat C4.4 ACERT engine delivers the same level of perfor

312E Hydraulic Excavator Specications Bucket Specifications and Compatibility Width Capacity Weight Fill m3 yd3 kg lb % Reach Boom R3.0 R3.0

312E Standard Equipment Standard equipment may vary. Consult your Cat dealer for details. ENGINE C4.4 diesel engine Biodiesel capable Meets EPA T

312E Optional Equipment Optional equipment may vary. Consult your Cat dealer for details. ENGINE Quick drains, engine and hydraulic oil HYDRAULIC SY

Notes 33

Notes 34

35

20 312E Hydraulic Excavator For more complete information on Cat products, dealer services, and industry solutions, visit us on the web at www.cat.co

Operator Station Comfort and convenience to keep people productive 2 1 Seats The seat range includes air suspension, heated, and air cooled opti

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

Structures & Undercarriage Built to work in rugged environments Frame The upper frame includes reinforced mountings to support the Roll-Over Prot

Front Linkage Made for high stress and long service life Booms and Sticks The 312E is offered with a reach boom and three stick congurations: R2.

Work Tools Dig, hammer, rip, and cut with condence An extensive range of Cat Work Tools for the 312E includes buckets, compactors, grapples, sc

Durability Categories Suitable for Any Situation Caterpillar offers standard bucket categories for excavators. Each category is based on intended