M320

M320

The Cat® M320 wheel excavator offers stability, efficiency, and ease of use for construction, utility work, and road maintenance jobs. With a long wheelbase, auto axle lock, and joystick controls, it is fuel-efficient, helps reduce operator fatigue, and lower costs.

Engine Power - ISO 14396 129 kW
Operating Weight Maximum 21500 kg
Maximum Travel Speed 35 km/h

Technicial Specifications

Engine
Engine Power - ISO 14396 129 kW
Engine Power - ISO 14396 (DIN) 176 hp (metric)
Engine Model Cat® C4.4
Net Power - ISO 9249 128 kW
Net Power - ISO 9249 (DIN) 174 hp (metric)
Bore 105 mm
Stroke 127 mm
Displacement 4.4 l
Biodiesel Capability Up to B20¹
Emissions Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
Note (1) Net power advertised is the power available at the flywheel when engine is equipped with fan, air cleaner, Clean Emission Module (CEM) exhaust gas aftertreatment, alternator, and cooling fan running at intermediate speed. Rated speed 2,000 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2) ¹Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels** up to: 100% biodiesel FAME (fatty acid methyl ester)* or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations“ (SEBU6250) for details. *For use of blends higher than 20% biodiesel, consult your Cat dealer. **Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.
Machine Weight
Operating Weight Maximum 21500 kg
Operating Weight Minimum 20000 kg
Note (1) Operating weight includes full fuel tank, operator, General Duty (GD) bucket and dual pneumatic tires. Weight varies depending on configuration. Typical configurations include 2.92 m (9'7") stick and 4000 kg (8,800 lb) counterweight.
Drive
Maximum Travel Speed 35 km/h
Hydraulic System
Main System - Maximum Flow - Implement 429 L/min
Maximum Pressure - Implement Circuit - Normal 35000 kPa
Maximum Pressure - Implement Circuit - Heavy Lift 37000 kPa
Maximum Pressure - Implement Circuit - Travel Circuit 35000 kPa
Swing Mechanism
Maximum Swing Speed 11 r/min
Maximum Swing Torque 62 kN·m
Service Refill Capacities
Fuel Tank 338 l
Cooling System 29 l
Hydraulic Tank 151 l
Hydraulic System - Including Tank 270 l
Dimensions
Boom One-Piece Boom 5.7 m (18'7")
Stick 2.92 m (9'7")
Bucket General Duty (GD) 1.19 m³ (1.56 yd³)
Shipping Height - Top of Cab 3355 mm
Shipping Length 9600 mm
Support Point 2860 mm
Tail Swing Radius 2817 mm
Counterweight Clearance 1316 mm
Ground Clearance 325 mm
Undercarriage Length 5160 mm
Wheel Base 2800 mm
Working Ranges and Forces
Boom One-Piece Boom 5.7 m (18'7")
Stick 2.92 m (9'7")
Bucket General Duty (GD) 1.19 m³ (1.56 yd³)
Digging Height 9740 mm
Dump Height 6780 mm
Maximum Digging Depth 6430 mm
Maximum Vertical Wall Digging Depth 5413 mm
Maximum Reach at Ground Line 9880 mm
Stick Forces (ISO) 102 kN
Bucket Forces (ISO) 120 kN
Note (1) All Dimensions are approximate. Values are with 10.00-20 Dual Pneumatic Tires.
Air Conditioning System
Note The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1 kg (2.2 lb) of refrigerant, which has a CO2 equivalent of 1.216 metric tonnes (1.340 tons).

Advantages and Features

Do More with Less Fuel

        
  • The Cat C4.4 engine meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
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  • The M320 is fuel efficient to help keep you moving and productive on the jobsite.
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  • Easily travel between sites with travel speeds up to 35 km/h (22 mph).
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  • Automatic Engine Speed Control helps reduce fuel consumption as it lowers engine speed when no operation is performed.
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  • The advanced hydraulic system provides the optimum balance of power and efficiency while providing the control needed for precise digging requirements.
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  • Auxiliary hydraulic options give you the versatility to use a wide range of Cat attachments.
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  • Don't let the temperature stop you from working. The wheel excavator has a standard high-ambient temperature capability of 52°C (125°F) and cold start capability of -18°C (0°F).

Not all features are available in all regions. Please check with your Cat dealer for specific offering availability in your area. Build Number: 05D

Low Maintenance Costs

        
  • Up to 17% lower maintenance costs to help reduce downtime, while maximizing productivity and profitability.3
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  • Quickly check and service your machine with daily maintenance points accessible from ground level.
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  • The hydraulic oil filter helps provide high filtration performance, anti-drain valves to help keep oil clean when the filter is replaced, and long life with a 2,000-hour replacement interval.
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  • Long greasing intervals and grouped grease points mean less downtime and more work getting done.
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  • Scheduled Oil Sampling (S•O•SSM) ports are located at ground level, helping simplify maintenance, and allowing for quick, easy extraction of fluid samples for analysis.
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  • Built on a long legacy of high performance and highly reliable wheel excavators, our machine components are designed and manufactured to Caterpillar quality standards.
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  • Parts commonality with the 320 excavator to help simplify maintenance and reduce downtime.
    •     
  • Attachments commonality with the 320 excavator to help enhance efficiency and provide convenience with interchangeable tools.

3Maintenance costs based on comparison of M320 (04B) and M320 (05D) recommended maintenance interval schedule and recommended component rebuild schedule.

Work in Comfort

        
  • Ergonomically designed cab with controls kept to a minimum, conveniently located and easy to operate.
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  • Rollover Protective Structure (ROPS) cab structure and Operator Protective Guards (top and front guards) are available.
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  • Get in and out of the cab easily using the tilt-up left console and straight access from the ground.
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  • Conveniently located storage for lunch box, documents, and mobile phones helping to keep the operator comfortable during the work day.
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  • Optional Bluetooth® radio allows for seamless mobile phone connection to listen to music and podcasts and for hands-free calling.
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  • Air conditioning controls are located on the machine display and can easily be adjusted to your ideal temperature with the touchscreen monitor.

Simple to Operate

        
  • Start up the machine easily with the push-to-start button.
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  • Operate the wheel excavator comfortably with easy-to-reach and intuitive controls.
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  • Two-way travel pedal is convenient and helps maximize productivity.
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  • The machine has a long wheelbase undercarriage for stability and comfort to help provide smooth and controlled operation.
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  • Up to 17% greater stability helps provide greater control and safety, allowing operators to move heavy loads more efficiently and confidently.4
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  • To help reduce operator fatigue, the auto-axle lock will activate automatically when the travel pedal is in neutral and the machine speed is near zero.
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  • Cat continues to improve user interface functionality for operators of all skill levels. The touchscreen monitor is an easy-to-use operating tool that presents the jobsite dashboard with an intuitive format. Productivity applications are displayed in grid-view to read on-the-go, and touchscreen navigation is programmed to make sure job performance continues without any hold ups.

4Compared to M320 (04B). Estimated stability improvement based on lift chart data.

Safety Features

        
  • Easy and safe access to daily service points.
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  • Standard LED lights give you a better view of your jobsite.
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  • Enjoy great all-around visibility with the help of small cab pillars, large windows, and a flat engine hood design. Rear and right-side-view cameras are standard.
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  • The service platform design provides easy, safe, and quick access to upper service platform; the service platform steps use anti-skid punch plate to prevent slipping.
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  • Grease points are grouped conveniently for quick and easy prevention lubrication.
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  • Use your PIN code on the monitor to enable the push button starting feature.
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  • The in-cab swing lock prevents front linkage from moving as you travel.
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  • Ground-level shutoff switch stops all fuel to the engine when activated and shuts down the machine.
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  • Dedicated tie down points for safe truck transport.

Sustainability

        
  • The Cat C4.4 engine meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
    •     
  • Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels** up to: 100% biodiesel FAME (fatty acid methyl ester)* or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or "Caterpillar Machine Fluids Recommendations" (SEBU6250) for details.
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  • Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
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  • Auto Engine Speed Control reduces fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
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  • Cat Scheduled Oil Sampling (S•O•S℠) Services helps reveal excessive wear, contaminated fluids or other “unseen” issues that can shorten component life. In many cases, you can extend oil and coolant change intervals by using fluid monitoring. Consult your Cat dealer or the machine's operation and maintenance manual for more information.

*For use of blends higher than 20% biodiesel, consult your Cat dealer.
**Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.

Standard Equipment

  • Note
    • Standard and Optional Equipment may vary. Consult your Cat dealer for details.
  • Boom, Sticks and Linkages
    • 5.7 m (18'7") One-Piece boom
  • Electrical System
    • LED lights on boom and cab
    • Roading and indicator lights, front and rear
    • One-slider joysticks
    • Maintenance free batteries
    • Centralized electrical disconnect switch
  • Engine
    • Cat® C4.4 double turbo diesel engine
    • Power mode selector
    • One-touch low idle with automatic engine speed control
    • Automatic idle shutdown
    • Work up to 3000 m (9,842 ft) above sea level without engine power de-rating
    • 52°C (125°F) high-ambient cooling capacity
    • Sealed double element air filter with integrated pre-cleaner
    • Electric fuel priming pump
    • Cold starting capability –18°C (0°F)
  • Hydraulic System
    • Boom and stick drift reduction valves
    • Boom and stick regeneration circuits
    • Electronic main control valve
    • Element type main hydraulic filter
    • Automatic swing brake
    • Adjustable hydraulic aggressiveness
    • Auto heavy lift
  • Safety and Security
    • Rearview camera
    • Signal/warning horn
    • Neutral lever (lock out) for all controls
    • Ground-level accessible secondary engine shutoff switch in cab
    • Anti-skid plate and countersunk bolts on service platform
  • Service and Maintenance
    • Scheduled Oil Sampling (S·O·S℠) ports
  • Technology
    • VisionLink™
  • Undercarriage and Structures
    • All wheel drive
    • Automatic brake/axle lock
    • Creeper speed
    • Electronic swing and travel lock
    • Heavy-duty axles, advanced disc brake system and travel motor, adjustable braking force
    • Oscillating front axle, lockable, with remote greasing point
    • Tires, 10.00-20 16 PR, dual pneumatic tires
    • Two-piece drive shaft
    • Two speed hydrostatic transmission
    • Counterweight 4000 kg (8,800 lb)
  • Cab
    • Sound-suppressed ROPS cab
    • Keyless push-to-start engine control

Optional Equipment

  • Note
    • Standard and Optional Equipment may vary. Consult your Cat dealer for details.
  • Boom, Sticks and Linkages
    • 2.7 m (8'10") stick
    • 2.92 m (9'7") stick
  • Electrical System
    • Electrical refueling pump
  • Engine
    • Cold starting capability –25°C (–13°F)
  • Hydraulic System
    • Tool control (two pump, one/two way high-pressure flow)
    • Basic tool control (one pump, one way high-pressure flow)
    • Quick coupler circuit for Cat Pin Grabber and CW-type coupler
    • Boom/stick lowering check valves
  • Safety and Security
    • Rear and right-side-view cameras with LED lights
    • Travel alarm
    • Rotating beacon on cab
    • Operator Protective Guards (OPG)
  • Undercarriage and Structures
    • Transmission shaft guard
  • Cab
    • High-resolution 203 mm (8") LCD touchscreen monitor
    • High-resolution 254 mm (10") LCD touchscreen monitor