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.
Engine Power - ISO 14396:2002 174 hp
Operating Weight Maximum 46740 lb
Maximum Travel Speed 21.7 mile/h
Engine Power - ISO 14396 (DIN) 176 hp (metric)
Biodiesel Capability Up to B20¹
Bore 4in
Displacement 268.5in³
Emissions Meets U.S. EPA Tier 4 Final, EU Stage V, Japan 2014 emission standards.
Engine Model C4.4
Engine Power - ISO 14396 (DIN) 176hp (metric)
Engine Power - ISO 14396:2002 174hp
Net Power - ISO 9249 171hp
Net Power - ISO 9249 (DIN) 174hp (metric)
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
Stroke 5.3in
Operating Weight Maximum 46740lb
Operating Weight Minimum 41450lb
Maximum Travel Speed 21.7mile/h
Main System - Maximum Flow - Implement 81gal/min
Maximum Pressure - Equipment 5366psi
Maximum Pressure - Swing 5729gal/min
Maximum Pressure - Travel 5076gal/min
Cooling System 8.4gal (US)
Diesel Exhaust Fluid (DEF) 7.9gal (US)
Final Drive 0.7gal (US)
Fuel Tank 124.2gal (US)
Hydraulic System - Including Tank 71.3gal (US)
Hydraulic Tank 40.9gal (US)
Boom 5260 mm (17'3")
Bucket 0.98 m³ GD (1.28 yd³)
Counterweight Clearance 4.3ft
Ground Clearance 1.4ft
Shipping Height - Top of Cab 11ft
Shipping Length 29.3ft
Stick 2.5 m (8' 2")
Support Point 11.8ft
Tail Swing Radius 8.5ft
Wheel Base 8.9ft
Boom Type VA Boom
Bucket 0.98 m³ GD (1.28 yd³)
Bucket Forces (ISO) 30799lbf
Cutting Height 32.6ft
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 1535 mm (5'0").
Reach at Ground Level 30.5ft
Stick 2.5 m (8' 2")
Stick Forces (ISO) 20682lbf
Vertical Wall Digging Depth 13.9ft
Maximum Swing Torque 37000ft·lbf
Swing Speed 9.2r/min
Note The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 0.85 kg of refrigerant which has a CO2 equivalent of 1.216 metric tonnes.
Standard and optional equipment may vary. Consult your Cat dealer for details.
ROPS, sound suppression
High-resolution 254 mm (10 in) LCD touchscreen monitor
VisionLink
Remote Flash
Remote Troubleshoot
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
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
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
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
Sampling ports for Scheduled Oil Sampling (S-O-S)
Integrated vehicle health management system
Automatic brake/axle lock
All wheel drive
Standard and optional equipment may vary. Consult your Cat dealer for details.
5650 mm (18'6") one-piece boom
5260 mm (17'3") variable adjustable boom
2500 mm (8'2") stick
2900 mm (9'6") stick
Deluxe cab
Premium cab
Auxiliary relay
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 refueling pump
One-slider joysticks
Two-slider joysticks
Combined flow/high-pressure auxiliary circuit
SmartBoom
Ride control
Cat tilrotator support
Joystick steering
360° visibility
Cat asset tracker
Automatic lubrication system for implement and swing system
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
