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Cat M320 specifications

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Cat M320: excavator.

Selected configuration figures
ConfigurationDocumented field and quantity
M320
Gross Power
139 hp
Hydraulic Pump Flow Capacity
114.2 gpm
M320 specification matrix — Boom/Stick Option (Mex) 1
SpecificationM320
Max Cutting Height28.29 ft
Max Loading Height19.89 ft
Max Reach Along Ground29.7 ft
Max Vertical Wall Dig Depth8.08 ft
Max Digging Depth17.03 ft
Boom/Stick Option (Mex) 1boom w/ stick 1900mm
Dimensions and weight
SpecificationM320
Wheelbase9.03 ft
Overall Width9.03 in
Ground Clearance1.19 ft
Overall Width - Outriggers Down12.8 ft
Height To Top Of Cab10.32 ft
Upper Structure Clearance4.3 ft
Fuel Tank
SpecificationM320
Fuel Tank Capacity98 gal
Engine
SpecificationM320
Engine Model3116T
Gross Power139 hp
Displacement402.8 cu in
Flywheel Power130 hp
Operational
SpecificationM320
Fuel Capacity97.8 gal
Hydraulic System Fluid Capacity79.3 gal
Hydraulic System Relief Valve Pressure4,785 psi
Hydraulic Pump Flow Capacity114.2 gpm
Tire Sizedual 11-20 16PR
Transmission and speeds
SpecificationM320
Max Travel Speed12.5 mph
Maximum Travel Speed12.4 mph
Creeper Speed - 1st Gear1.8 mph
Maximum Gradeability57
Swing Mechanism
SpecificationM320
Maximum Flow29.59 gpm
Hydraulic System
SpecificationM320
Travel Circuit4,779 psi
Normal4,779 psi
Implement/Travel Circuit84.54 gpm
Operating Specifications
SpecificationM320
Travel Speed12.4 mph
Maximum Reach - Ground Level32.5 ft
Maximum Bucket Capacity1.8 yd3
Bucket Digging Force - One Piece Boom28,575 lb
Maximum Digging Depth - One Piece Boom20.3 ft
Maximum Reach - Ground Level, One Piece Boom32.5 ft
Stick Digging Force - One Piece Boom20,250 lb
Bucket Digging Force - Va Boom28,575 lb
Maximum Digging Depth - Va Boom20.9 ft
Maximum Reach - Ground Level, Va Boom31.8 ft
Stick Digging Force - Va Boom20,250 lb
Service Refill Capacities
SpecificationM320
Fuel Tank97.8 gal
Hydraulic Tank54.2 gal
Hydraulic System - Including Tank79.3 gal
Engine Crankcase5.6 gal
Powershift Transmission0.8 gal
Front Steering Axle - Differential3 gal
Rear Axle - Housing (Differential)3.2 gal
Cooling9.3 gal
Ratios
FigureM320
Fuel tank per engine horsepower0.70 gal
Hydraulic power from the listed pump flow and relief pressure318.8 hp

Cat M320: excavator

Where the M320 ranks in Cat's list — Scope of the captured comparison
BrandEquipment groupCompared entrySort order
CatexcavatorM320Descending quantity; 1 is largest
FigureM320RankLowest in lineHighest in line
Engine power139.0 hp2 of 1313.0 hp313.8 hp
Fuel capacity97.8 gal2 of 125.8 gal163.8 gal
Maximum digging depth17.0 ft2 of 106.8 ft26.9 ft

The M320 beside its neighbours

Base version214M320
Engine power102 hp139 hp
Fuel capacity52.9 gal97.8 gal
Wheelbase8.21 ft9.03 ft
Maximum digging depth16.11 ft17.03 ft
M320: forum references — Forum-title search
Forum indexEquipment class queriedNames in the searchMatching titles
Heavy Equipment ForumsexcavatorCat and the M320. That is too few titles to say what owners mostly ask about, so the most recent are listed instead1
Used market for the M320 — Dated first-page listing snapshot
Observation dateListing sourceEquipment searchListings
2026-09-24MachineryTraderCat excavator31
ModelListedModel yearsLowest askingHighest askingMedian askingMedian hours
M320312002 to 2024$18,000$295,000$98,4006,115
M320: recall reference — Dated CPSC search
Search dateDatabaseNames queriedSearch result
2026-09-24U.S. Consumer Product Safety CommissionCat together with the excavator M320No matching recall in this search

Sources for this page

Evidence classDocument, classification and recorded date
Reference site
  • Reference site: Cat M320 — RitchieSpecs. Observed 2026-09-24.
Forum threads
Used-market listings
Federal agency data

Cat M320: Configuration records

M320
SpecificationSource figure
Boom/Stick Option (Mex) 1
Max Cutting Height28.29 ft
Max Loading Height19.89 ft
Max Reach Along Ground29.7 ft
Max Vertical Wall Dig Depth8.08 ft
Max Digging Depth17.03 ft
Boom/Stick Option (Mex) 1boom w/ stick 1900mm
Dimensions and weight
Wheelbase9.03 ft
Fuel Tank
Fuel Tank Capacity98 gal
Engine
Engine Model3116T
Gross Power139 hp
Displacement402.8 cu in
Flywheel Power130 hp
Operational
Fuel Capacity97.8 gal
Hydraulic System Fluid Capacity79.3 gal
Hydraulic System Relief Valve Pressure4,785 psi
Hydraulic Pump Flow Capacity114.2 gpm
Tire Sizedual 11-20 16PR
Transmission and speeds
Max Travel Speed12.5 mph
Maximum Travel Speed12.4 mph
Creeper Speed - 1st Gear1.8 mph
Maximum Gradeability57
Swing Mechanism
Maximum Flow29.59 gpm
Hydraulic System
Travel Circuit4,779 psi
Normal4,779 psi
Implement/Travel Circuit84.54 gpm
Operating Specifications
Travel Speed12.4 mph
Maximum Reach - Ground Level32.5 ft
Maximum Bucket Capacity1.8 yd3
Bucket Digging Force - One Piece Boom28,575 lb
Maximum Digging Depth - One Piece Boom20.3 ft
Maximum Reach - Ground Level, One Piece Boom32.5 ft
Stick Digging Force - One Piece Boom20,250 lb
Bucket Digging Force - Va Boom28,575 lb
Maximum Digging Depth - Va Boom20.9 ft
Maximum Reach - Ground Level, Va Boom31.8 ft
Stick Digging Force - Va Boom20,250 lb
Service Refill Capacities
Fuel Tank97.8 gal
Hydraulic Tank54.2 gal
Hydraulic System - Including Tank79.3 gal
Engine Crankcase5.6 gal
Powershift Transmission0.8 gal
Front Steering Axle - Differential3 gal
Rear Axle - Housing (Differential)3.2 gal
Cooling9.3 gal
Additional specifications
Ground Clearance1.19 ft
Overall Width - Outriggers Down12.8 ft
Height To Top Of Cab10.32 ft
Upper Structure Clearance4.3 ft

Source

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