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Small Excavators(Non Current)

Caterpillar serves all regions of the world so we build many different configurations of hydraulic excavators. Your Cat® dealer has exact machine specifications available in your area to help you choose what will best meet your needs.

317B LN Hydraulic Excavator

Improved performance and rugged durability combine to maximize productivity. Better controllability, higher stick and bucket forces, increased lift capacity, low fuel consumption, simplified service and a more comfortable operator station increase your productivity and lower your operating costs.

Product Details


Engine Model 3056 T
Flywheel Power 81 kW
Gross Power 84 kW
Displacement 5 L


Operating Weight 18200 kg


Maximum Drawbar Pull 154 kN
Travel Speed 5 km/h

Hydraulic System

Maximum Pressure - Implements 34323.28 kPa
Maximum Pressure - Travel 34323.28 kPa
Pilot System - Maximum Flow 17 L/min

Service Refill Capacities

Fuel Tank 280 L
Cooling System 17.3 L
Engine Oil 13 L
Swing Drive (each) 3 L
Final Drive (each) 2.6 L
Hydraulic System (including tank) 188 L
Hydraulic Tank 105 L

Operator Station

Excellent viewing area

Greater control convenience

Double wall, pressed cab shell

Maestro Electronic Control System panel

Automatic climate control


Dial throttle

Travel controls

Activation control lever

Suspension seat

Maestro Electronic Control System

Electronic Engine Underspeed Control

Operator control panel

Power Mode Selector

Automatic Engine Speed Control

Boom Priority Mode

Swing Priority Mode

Fine Control Mode

User Mode

Machine monitoring system

Service Level Mode

Diagnostic functions


Automatic Engine Control

Direct injection fuel system


Forged crankshaft

Heat resistant pistons

Connecting rods

3046 T


Control responsiveness

Hydraulic relief pressure

Hydraulic cross-sensing system

Boom regeneration circuit

Stick regeneration circuit

Pump flow

Auxiliary hydraulic valve

Hydraulic cylinder snubbers

Cat‘s XT hose

Hydraulic oil

Scheduled Oil Sampling


Precision robotic welding

Heavy-duty, modified X-shaped chassis design

Strutted track links

Smoother auto shifting

Grease lubricated tracks

Long (L) undercarriage

Long and Narrow (LN) undercarriage

The elimination of the ledge

Standard idler guards


Advanced carbody design

Robotic welded track roller frame

Rugged main frame

Booms, Sticks and Attachments

Select the right combination for the job

Performance and long service life

The choice of two standard application booms and four sticks

One-piece boom

Hydraulic Adjustable Boom

Short stick

Medium stick

Long stick

Extra long stick

Choose from a variety of work tools

Buckets and Teeth



Extreme Excavation

Ditch Cleaning (DC)

Trapezoidal (T)

Quick Coupler


Fast, easy maintenance

Ground level service points

Filters and filter locations

Design and layout

Water separator removes water from fuel

Remote greasing block

Maestro Electronic Power Unit Control

Customer Service

Equipment Management Services

Maintenance Services

Predictive Services

Reconditioning Services

Availability of Cat Parts

Built for it