The Cat® M320 Excavator maximizes performance with up to 16 percent more swing torque to get the job done faster. Save time and money with up to 10 percent overall savings in maintenance costs, longer service intervals, and 100 percent daily ground-level maintenance. Combined with a comfortable working environment, the M320 keeps you working quickly and efficiently.
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Engine
- Engine Power - ISO 14396
- 174 hp
- Engine Power - ISO 14396 (DIN)
- 176 hp (metric)
- Engine Model
- C4.4
- Net Power - ISO 9249
- 171 hp
- Net Power - ISO 9249 (DIN)
- 174 hp (metric)
- Bore
- 4 in
- Displacement
- 268.5 in³
- Stroke
- 5.3 in
- Biodiesel Capability
- Up to B20¹
- Emissions
- Meets U.S. EPA Tier 4 Final, EU Stage V, Japan 2,014 emission standards.
- Note (1)
- Net power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, CEM exhaust gas aftertreatment, alternator, and cooling fan with engine speed at 2,200 rpm. Advertised power is tested per the specified standar
- Note (2)
- ¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)* or 100% renewable diesel, HVO
Machine Weight
- Operating Weight Maximum
- 46,740 lb
- Operating Weight Minimum
- 41,450 lb
Transmission
- Maximum Travel Speed
- 21.7 mile/h
Hydraulic System
- Main System - Maximum Flow - Implement
- 81 gal/min
- Maximum Pressure - Equipment
- 5,366 psi
- Maximum Pressure - Swing
- 5,729 gal/min
- Maximum Pressure - Travel
- 5,076 gal/min
Service Refill Capacities
- Cooling System
- 8.4 gal (US)
- Diesel Exhaust Fluid (DEF)
- 7.9 gal (US)
- Hydraulic System - Including Tank
- 71.3 gal (US)
- Hydraulic Tank
- 40.9 gal (US)
- Final Drive
- 0.7 gal (US)
- Fuel Tank
- 124.2 gal (US)
Dimensions
- Boom
- 5,260 mm (17'3")
- Bucket
- 0.98 m³ GD (1.28 yd³)
- Stick
- 2.5 m (8' 2")
- Shipping Height - Top of Cab
- 11 ft
- Shipping Length
- 29.3 ft
- Counterweight Clearance
- 4.3 ft
- Ground Clearance
- 1.4 ft
- Support Point
- 11.8 ft
- Tail Swing Radius
- 8.5 ft
- Wheel Base
- 8.9 ft
Working Ranges and Forces
- Boom Type
- VA Boom
- Bucket
- 0.98 m³ GD (1.28 yd³)
- Stick
- 2.5 m (8' 2")
- Reach at Ground Level
- 30.5 ft
- Vertical Wall Digging Depth
- 13.9 ft
- Cutting Height
- 32.6 ft
- Bucket Forces (ISO)
- 30,799 lbf
- Stick Forces (ISO)
- 20,682 lbf
- Note (1)
- Range values are with dual pneumatic tires (10.00-20). Range values are calculated with a GD bucket (CW) and CW-30 quick coupler with a tip radius of 1,535 mm (5'0").
Swing Mechanism
- Swing Speed
- 9.2 r/min
- Maximum Swing Torque
- 37,000 ft·lbf
Air Conditioning System
- Note
- The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1,430). The system contains 0.85 kg of refrigerant which has a CO2 equivalent of 1.216 metric tonnes.
Standard Equipment:
-
- Note
-
- Standard and optional equipment may vary. Consult your Cat dealer for details.
-
- Cab
-
- ROPS, sound suppression
- High-resolution 254 mm (10 in) LCD touchscreen monitor
-
- Cat Technology
-
- VisionLink
- Remote Flash
- Remote Troubleshoot
-
- Electrical System
-
- LED lights on boom and cab
- LED lights on chassis (left-hand, right-hand) an counterweight
- Programmable time-delay LED working lights
- Roading and indicator lights, front and rear
- Maintenance free batteries
- Centralized electrical disconnect switch
- Electrical refueling pump
-
- Engine
-
- Power Mode Selector
- One-touch low idle with auto engine speed control
- Auto engine idle shutdown
- 52° C (125° F) high-ambient cooling capacity
- Cold start capability -18° C (0° F)
- Double element air filter with integrated precleaner
- Electric fuel priming pump
- On-demand electric cooling fans with autoreverse function
-
- Hydraulic System
-
- Automatic swing brake
- Auto hydraulic oil warm up
- Electronic main control valve
- Boom and stick drift reduction valves
- Heavy lift mode
- Quick coupler circuit
- Separate dedicated swing pump
-
- Safety And Security
-
- Rear and side-view cameras
- Wide angle mirrors
- Ground-level engine shutoff switch
- Anti-skid plate and countersunk bolts on service platform
- Signaling/warning horn
- Inspection lighting
- 2D E-Fence
-
- Service And Maintenance
-
- Sampling ports for Scheduled Oil Sampling (S-O-S)
- Integrated vehicle health management system
-
- Undercarriage And Structures
-
- Automatic brake/axle lock
- All wheel drive
Optional Equipment:
-
- Note
-
- Standard and optional equipment may vary. Consult your Cat dealer for details.
-
- Boom And Sticks
-
- 5650 mm (18'6") one-piece boom
- 5260 mm (17'3") variable adjustable boom
- 2500 mm (8'2") stick
- 2900 mm (9'6") stick
-
- Cab
-
- Deluxe cab
- Premium cab
- Auxiliary relay
-
- Cat Technology
-
- Cat Grade Connectivity
- Cat Grade 2D
- Cat Grade with Attachment Ready Option (ARO)
- Cat Grade 3D dual GNSS
- Laser catcher
- Grade Assist
- Cat Payload
- Cat Tilt Rotator (TRS) Integration
-
- Electrical System
-
- Electrical refueling pump
-
- Hydraulic System
-
- One-slider joysticks
- Two-slider joysticks
- Combined flow/high-pressure auxiliary circuit
- SmartBoom
- Ride control
- Cat tilrotator support
- Joystick steering
-
- Safety And Security
-
- 360° visibility
- Cat asset tracker
-
- Service And Maintenance
-
- Automatic lubrication system for implement and swing system
-
- Undercarriage And Structures
-
- 10.00-20 16 PR, dual tires
- 11.00-20-16 PR, dual tires
- 315/70R22.5, no gap dual tires
- 445/70R 19.5, single tires
- 300-80-22.5 dual pneumatic, spacerless tire
- 3600 kg (7,937 lb) counterweight
- 4200 kg (9,260 lb) counterweight
Specifications
Engine
- Engine Power - ISO 14396
- 174 hp
- Engine Power - ISO 14396 (DIN)
- 176 hp (metric)
- Engine Model
- C4.4
- Net Power - ISO 9249
- 171 hp
- Net Power - ISO 9249 (DIN)
- 174 hp (metric)
- Bore
- 4 in
- Displacement
- 268.5 in³
- Stroke
- 5.3 in
- Biodiesel Capability
- Up to B20¹
- Emissions
- Meets U.S. EPA Tier 4 Final, EU Stage V, Japan 2,014 emission standards.
- Note (1)
- Net power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, CEM exhaust gas aftertreatment, alternator, and cooling fan with engine speed at 2,200 rpm. Advertised power is tested per the specified standar
- Note (2)
- ¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)* or 100% renewable diesel, HVO
Machine Weight
- Operating Weight Maximum
- 46,740 lb
- Operating Weight Minimum
- 41,450 lb
Transmission
- Maximum Travel Speed
- 21.7 mile/h
Hydraulic System
- Main System - Maximum Flow - Implement
- 81 gal/min
- Maximum Pressure - Equipment
- 5,366 psi
- Maximum Pressure - Swing
- 5,729 gal/min
- Maximum Pressure - Travel
- 5,076 gal/min
Service Refill Capacities
- Cooling System
- 8.4 gal (US)
- Diesel Exhaust Fluid (DEF)
- 7.9 gal (US)
- Hydraulic System - Including Tank
- 71.3 gal (US)
- Hydraulic Tank
- 40.9 gal (US)
- Final Drive
- 0.7 gal (US)
- Fuel Tank
- 124.2 gal (US)
Dimensions
- Boom
- 5,260 mm (17'3")
- Bucket
- 0.98 m³ GD (1.28 yd³)
- Stick
- 2.5 m (8' 2")
- Shipping Height - Top of Cab
- 11 ft
- Shipping Length
- 29.3 ft
- Counterweight Clearance
- 4.3 ft
- Ground Clearance
- 1.4 ft
- Support Point
- 11.8 ft
- Tail Swing Radius
- 8.5 ft
- Wheel Base
- 8.9 ft
Working Ranges and Forces
- Boom Type
- VA Boom
- Bucket
- 0.98 m³ GD (1.28 yd³)
- Stick
- 2.5 m (8' 2")
- Reach at Ground Level
- 30.5 ft
- Vertical Wall Digging Depth
- 13.9 ft
- Cutting Height
- 32.6 ft
- Bucket Forces (ISO)
- 30,799 lbf
- Stick Forces (ISO)
- 20,682 lbf
- Note (1)
- Range values are with dual pneumatic tires (10.00-20). Range values are calculated with a GD bucket (CW) and CW-30 quick coupler with a tip radius of 1,535 mm (5'0").
Swing Mechanism
- Swing Speed
- 9.2 r/min
- Maximum Swing Torque
- 37,000 ft·lbf
Air Conditioning System
- Note
- The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1,430). The system contains 0.85 kg of refrigerant which has a CO2 equivalent of 1.216 metric tonnes.
Standard/Optional Features
Standard Equipment:
-
- Note
-
- Standard and optional equipment may vary. Consult your Cat dealer for details.
-
- Cab
-
- ROPS, sound suppression
- High-resolution 254 mm (10 in) LCD touchscreen monitor
-
- Cat Technology
-
- VisionLink
- Remote Flash
- Remote Troubleshoot
-
- Electrical System
-
- LED lights on boom and cab
- LED lights on chassis (left-hand, right-hand) an counterweight
- Programmable time-delay LED working lights
- Roading and indicator lights, front and rear
- Maintenance free batteries
- Centralized electrical disconnect switch
- Electrical refueling pump
-
- Engine
-
- Power Mode Selector
- One-touch low idle with auto engine speed control
- Auto engine idle shutdown
- 52° C (125° F) high-ambient cooling capacity
- Cold start capability -18° C (0° F)
- Double element air filter with integrated precleaner
- Electric fuel priming pump
- On-demand electric cooling fans with autoreverse function
-
- Hydraulic System
-
- Automatic swing brake
- Auto hydraulic oil warm up
- Electronic main control valve
- Boom and stick drift reduction valves
- Heavy lift mode
- Quick coupler circuit
- Separate dedicated swing pump
-
- Safety And Security
-
- Rear and side-view cameras
- Wide angle mirrors
- Ground-level engine shutoff switch
- Anti-skid plate and countersunk bolts on service platform
- Signaling/warning horn
- Inspection lighting
- 2D E-Fence
-
- Service And Maintenance
-
- Sampling ports for Scheduled Oil Sampling (S-O-S)
- Integrated vehicle health management system
-
- Undercarriage And Structures
-
- Automatic brake/axle lock
- All wheel drive
Optional Equipment:
-
- Note
-
- Standard and optional equipment may vary. Consult your Cat dealer for details.
-
- Boom And Sticks
-
- 5650 mm (18'6") one-piece boom
- 5260 mm (17'3") variable adjustable boom
- 2500 mm (8'2") stick
- 2900 mm (9'6") stick
-
- Cab
-
- Deluxe cab
- Premium cab
- Auxiliary relay
-
- Cat Technology
-
- Cat Grade Connectivity
- Cat Grade 2D
- Cat Grade with Attachment Ready Option (ARO)
- Cat Grade 3D dual GNSS
- Laser catcher
- Grade Assist
- Cat Payload
- Cat Tilt Rotator (TRS) Integration
-
- Electrical System
-
- Electrical refueling pump
-
- Hydraulic System
-
- One-slider joysticks
- Two-slider joysticks
- Combined flow/high-pressure auxiliary circuit
- SmartBoom
- Ride control
- Cat tilrotator support
- Joystick steering
-
- Safety And Security
-
- 360° visibility
- Cat asset tracker
-
- Service And Maintenance
-
- Automatic lubrication system for implement and swing system
-
- Undercarriage And Structures
-
- 10.00-20 16 PR, dual tires
- 11.00-20-16 PR, dual tires
- 315/70R22.5, no gap dual tires
- 445/70R 19.5, single tires
- 300-80-22.5 dual pneumatic, spacerless tire
- 3600 kg (7,937 lb) counterweight
- 4200 kg (9,260 lb) counterweight