311C U Hydraulic Excavator
Increased horsepower, better controllability, extended service intervals and a redesigned operator station increase your productivity and lower your operating costs.
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Overview and Specifications
| Travel Speed |
3.4 mph / 5.6 km/h |
| Maximum Drawbar Pull |
20680 lb / 92 kN |
| Flywheel Power |
79 hp / 59 kW |
| Gross Power |
82 hp / 61 kW |
| ISO 9249 |
79 hp / 59 kW |
| EEC 80/1269 |
79 hp / 59 kW |
| Bore |
4 in / 102 mm |
| Stroke |
5.1 in / 130 mm |
| Displacement |
259 in3 / 4.25 L |
| SAE J1349 |
79 hp / 59 kW |
| Net Power |
79 hp / 59 kW |
| Engine Model |
3064T |
| Fuel Tank |
51.5 gal / 195 L |
| Cooling System |
4.6 gal / 17.5 L |
| Engine Oil |
5.2 gal / 19.5 L |
| Swing Drive |
.8 gal / 3 L |
| Final Drive (Each) |
.8 gal / 3 L |
| Hydraulic System (Including Tank) |
42.3 gal / 160 L |
| Hydraulic Tank |
24.3 gal / 92 L |
| Boom Cylinder - Bore |
4 in / 100 mm |
| Boom Cylinder - Stroke |
40 in / 1002 mm |
| Stick Cylinder - Bore |
4.3 in / 110 mm |
| Stick Cylinder - Stroke |
47 in / 1194 mm |
| Bucket Cylinder - Bore |
4 in / 100 mm |
| Bucket Cylinder - Stroke |
37 in / 939 mm |
| Main Implement System - Maximum Flow (2x) |
28 gal/min / 108 L/min |
| Maximum Pressure - Implements |
4340 psi / 29900 kPa |
| Maximum Pressure - Travel |
4980 psi / 34300 kPa |
| Maximum Pressure - Swing |
3410 psi / 23500 kPa |
| Pilot System - Maximum Flow |
6.4 gal/min / 24.3 L/min |
| Pilot System - Maximum Pressure |
600 psi / 4120 kPa |
| Blade - Maximum Flow |
14.1 gal/min / 53.2 L/min |
| Blade System - Maximum Pressure |
2990 psi / 20594 kPa |
| Operating Weight |
26410 lb / 11980 kg |
| Operating Weight - Standard Undercarriage |
26410 lb / 11980 kg |
| Swing Torque |
23060 lb ft / 31270 N·m |
| Swing Speed |
10.6 RPM / 10.6 RPM |
| Transport width |
30.31 in / 770 mm |
Features & Benefits
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The 311C U is powered by the Cat® 3064 T engine. This engine includes several design features which enhance performance, efficiency and reliability.
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The open-center, two-pump hydraulic system features pump flow control which improves fuel efficiency, ensures smooth controllability, reduces sound levels and extends component life.
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Rugged Caterpillar® undercarriage design and proven structural manufacturing techniques assure outstanding durability in the toughest applications. New grease lubricated seals protect and prolong track life.
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Larger, quieter, climate-controlled cab has excellent sightlines to the work area to help keep operator fatigue low and production up throughout the entire shift.
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Designed-in flexibility to help bring higher production and efficiency to all jobs.
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Longer service intervals and easier maintenance result in better machine availability and lower owning and operating costs.
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Ex-CWTS available buckets, quick couplers, multi-grapples, shears, and ex-CIPL available hammers – to provide a total solution package to the end-user.
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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 and attachment selection to replacement.
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