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Medium 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.

320B S ME Hydraulic Excavator

The 320B S is a specific configuration of the 320B hydraulic excavator. It has a larger, heavier undercarriage than the standard 320B specifically designed for work in severe duty underfoot conditions. The 320B S has a narrow gauge (shipping width 2.5 m) for easy transport, and is intended for work requiring an extra rugged undercarriage (such as mountainous areas).

  • Specification Summary

  • Engine ModelCat 3116 T
  • Net Flywheel Power96 kW
  • Operating Weight - Std. Undercarriage19400 kg
  • Maximum Drawbar Pull177 kN
  • Maximum Travel Speed5.5 km/h

Product Details


Engine Model Cat 3116 T
Net Flywheel Power 96 kW
Net Power - ISO 9249 96 kW
Bore 102 mm
Stroke 130 mm
Displacement 6.37 L
Net Power - EEC 80/1269 96 kW
Net Power - SAE J1349 96 kW


Operating Weight - Std. Undercarriage 19400 kg


Maximum Drawbar Pull 177 kN
Maximum Travel Speed 5.5 km/h

Hydraulic System

Main Implement System - Maximum Flow (2x) 185 L/min
Max. Pressure - Equipment 34300 kPa
Max. Pressure - Travel 34300 kPa
Max. Pressure - Swing 23000 kPa
Pilot System - Maximum Flow 41 L/min
Pilot System - Maximum Pressure 4120 kPa
Boom Cylinder - Bore 120 mm
Boom Cylinder - Stroke 1260 mm
B1 Family Bucket Cylinder - Bore 120 mm
B1 Family Bucket Cylinder - Stroke 1030 mm
C Family Bucket Cylinder - Bore 130 mm
C Family Bucket Cylinder - Stroke 1150 mm

Service Refill Capacities

Fuel Tank Capacity 340 L
Cooling System 25 L
Engine Oil 20.5 L
Swing Drive 6 L
Final Drive (each) 10 L
Hydraulic System (including tank) 220 L

Swing Mechanism

Swing Speed 10.7 RPM
Swing Torque 57 kN·m


Standard w/Standard Undercarriage 600 mm
Standard w/Long Undercarriage - Triple Grouser 800 mm
Optional 600 mm
Optional 700 mm
Optional 800 mm

Operator Station

Excellent viewing area

Greater control convenience

Maestro Electronic Control System panel

Climate control


Dial throttle

Travel controls

Travel pedal

Activation control lever

Suspension seat

Modulation pedal

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

High displacement


Two-piece pistons

Worldwide emissions standards

Air intake heating

Fuel tank capacity

Caterpillar oils

Factory remanufactured parts

Easy maintenance


Control responsiveness

Hydraulic relief pressure

Hydraulic cross-sensing system

Boom regeneration circuit

Fine swing control

Pump flow

Auxiliary hydraulic valve

Hydraulic flow control system

Hydraulic cylinder snubbers

XT hose and reusable couplings

Hydraulic oil

Scheduled Oil Sampling

Remanufactured components


Precision robotic welding

Heavy-duty, X-shaped chassis design

Strutted track links

Smooth autoshifting

Standard undercarriage

Long (L) undercarriage

Long and narrow (LN) undercarriage

Track roller frame top plate

Idler guards

Bolt-on Step

Custom Track Service


Advanced carbody design

Robotic welded track roller frame

Rugged main frame

Booms and sticks

Booms, Sticks and Attachments

Select the right combination for the job

Booms and sticks

3 standard application booms and 5 sticks

Reach boom (R) 5.675 m

Mass Excavator boom (M) 5.2 m

Variable Adjustable boom (VA) 5.462 m

Heavy-duty Arrangements

Additional attachments

Work tools

Smart Boom

More productive

More comfort

More efficient

Buckets and Teeth

Utility Light (LU)

Utility Standard (SU)

Excavation/Trenching (X)

Extreme Excavation/Trenching (EX)

Rock (Classical/Standard)

Rock Loading (RL)

Block Handling (BH)

Skeleton Light (SL)

Ditch Cleaning (DC)

Trapezoidal (T)

Quick Coupler


Fast, easy maintenance

Ground level service points

Filters and filter locations

Design and layout

Water separator

Remote greasing block

Maestro Electronic Power Unit Control

Environmentally improved features

Customer Service

Equipment Management Services

Maintenance Services

Predictive Services

Reconditioning Services

Availability of Cat Parts

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