Machine models

Cat 304C CR and 305C CR specifications

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Short answer

Cat 304C CR and 305C CR: excavators.

Selected configuration figures
ConfigurationDocumented field and quantity
304C CR
Gross Power
43.2 hp
Operating Weight
10,844 lb
305C CR
Gross Power
48.5 hp
Operating Weight
11,725 lb
304C CR and 305C CR specification matrix — Listing labels reported by the source
Publisher nameSource guideListing-entry countLabels named by the source
Cat304C CR and 305C CR2304C CR and 305C CR
Boom/Stick Option (Hex) 1
Specification304C CR305C CR
Shipping Length Of Unit17 ft17.5 ft
Shipping Height Of Unit8.33 ft8.33 ft
Max Cutting Height17.33 ft17.58 ft
Max Loading Height12.08 ft12.5 ft
Max Reach Along Ground17.93 ft18.58 ft
Max Vertical Wall Digging Depth8 ft8.25 ft
Max Digging Depth10.83 ft11.42 ft
Boom/Stick Option (Hex) 1Standard StickStandard Stick
Dimensions and weight
Specification304C CR305C CR
Width To Outside Of Tracks6.5 ft6.5 ft
Length Of Track On Ground8.5 ft8.5 ft
Ground Clearance1.12 ft1.12 ft
Height To Top Of Cab8.33 ft8.25 ft
Tail Swing Radius3.5 ft3.25 ft
Track Gauge5.18 ft5.2 ft
Maximum Dump Height - Long Stick12.8 ft13.29 ft
Maximum Dump Height - Standard Stick12.11 ft12.5 ft
Maximum Horizontal Reach - Long Stick19.13 ft19.86 ft
Maximum Horizontal Reach - Standard Stick17.91 ft18.54 ft
Maximum Reach - Ground Level - Standard Stick17.9 ft18.61 ft
Maximum Vertical Dig Depth - Standard Stick8 ft9.6 ft
Removal Counterweight Clearance2 ft2 ft
Shipping Height8.37 ft8.37 ft
Maximum Cutting Height - Long Stick17.98 ft18.47 ft
Length - Center Of Rollers17.91 ft18.54 ft
Shipping Length17 ft17.5 ft
Height - Over Cab8.37 ft8.37 ft
Swing Radius - Rear3.51 ft3.5 ft
Maximum Cutting Height - Standard Stick17.32 ft17.62 ft
Maximum Digging Depth - Standard Stick10.8 ft11.4 ft
Track Shoe Width1.31 ft1.4 ft
Transport Width6.5 ft6.5 ft
Specification304C CR
Maximum Digging Depth - Long Stick12.11 ft
Width - Over Track6.5 ft
Specification305C CR
Maximum Vertical Dig Depth - Long Stick12.76 ft
Undercarriage
Specification304C CR305C CR
Shoe Size16 in16 in
Track Gauge5.17 ft5.17 ft
Max Travel Speed2.8 mph2.8 mph
Swing System
Specification304C CR305C CR
Machine Swing Speed9 rpm9 rpm
Boom Swing - Left - Without Stop80 degrees80 degrees
Boom Swing - Left - With Stop60 degrees60 degrees
Boom Swing - Right50 degrees50 degrees
Engine
Specification304C CR305C CR
Number Of Cylinders44
Engine ModelS4Q2S4Q2-T
Gross Power43.2 hp48.5 hp
Net Power42 hp47 hp
Power Measured @2,400 rpm2,400 rpm
Displacement153 cu in153 cu in
Operational
Specification304C CR305C CR
Operating Weight10,844 lb11,725 lb
Fuel Capacity19.1 gal19 gal
Cooling System Fluid Capacity3 gal2.9 gal
Hydraulic System Fluid Capacity20.6 gal20.6 gal
Operating Voltage12 V12 V
Engine Oil Capacity1.9 gal1.9 gal
Alternator Supplied Amperage50 amps50 amps
Hydraulic System Relief Valve Pressure3,553 psi3,553 psi
Hydraulic Pump Flow Capacity31.4 gpm34.3 gpm
Swing Mechanism
Specification304C CR305C CR
Swing Speed9 rpm9 rpm
Weights
Specification304C CR305C CR
Operating Weight10,582 lb11,464 lb
Operating Weight - With Cab10,844 lb11,725 lb
Blade
Specification304C CR305C CR
Blade height15 in15 in
Blade width6.5 ft6.5 ft
Lift Height17 in17 in
Dig Depth21 in21 in
Hydraulic System
Specification304C CR305C CR
Operating Pressure - Swing2,553 psi2,669 psi
Operating Pressure - Equipment3,553 psi3,553 psi
Operating Pressure - Travel3,553 psi3,553 psi
Digging Force - Stick - Standard5,553 lb6,497 lb
Digging Force - Stick - Long4,788 lb5,575 lb
Digging Force - Bucket10,049 lb11,443 lb
Auxiliary Circuit - Primary (245 Bar/3,553 Psi)18.5 gpm18.5 gpm
Auxiliary Circuits - Secondary - At 174 Bar9.25 gpm9.25 gpm
Service Refill Capacities
Specification304C CR305C CR
Cooling System2.9 gal2.9 gal
Fuel Tank19 gal19 gal
Hydraulic Tank12.7 gal12.7 gal
Hydraulic System20.6 gal20.6 gal
Engine Oil1.8 gal1.8 gal
Engine Dimensions
Specification304C CR305C CR
Bore3.5 in3.5 in
Stroke4.1 in4.1 in
Sound Levels
Specification304C CR305C CR
Cab80 dB(A)78 dB(A)
Canopy78 dB(A)77 dB(A)
Msc Comments
Specification304C CR305C CR
Msc Spec Date3/063/06
Travel System
Specification304C CR305C CR
Maximum Traction Force - High Speed5,170 lb6,092 lb
Maximum Traction Force - Low Speed10,027 lb10,813 lb
Gradeability - Maximum - High30 degrees30 degrees
Travel Speed - High2.9 mph2.9 mph
Travel Speed - Low1.6 mph1.6 mph
Variants — Source comparison annotation
Source guideDiffering-field count reported
304C CR and 305C CR42
Ratios
Figure304C CR305C CR
Engine horsepower per 1,000 lb of weight3.94.0
Fuel tank per engine horsepower0.45 gal0.40 gal
Hydraulic power from the listed pump flow and relief pressure65.1 hp71.1 hp

Cat 304C CR and 305C CR: excavator

304C CR and 305C CR: forum references — Forum-title search
Forum indexEquipment class queriedNames in the searchMatching titles
The Farming Forum and Heavy Equipment ForumsexcavatorCat and the 304C CR, 305C CR52
Topics named by those titles
Title topicTitles
hydraulics6
fuel system4
Topic in the titleThreadsShare of matching threads
hydraulics612%
fuel system48%
Used market for the 304C CR and 305C CR — Dated first-page listing snapshot
Observation dateListing sourceEquipment searchListings
2026-09-24MachineryTraderCat excavator13
ModelListedModel yearsLowest askingHighest askingMedian askingMedian hours
304C CR92006 to 2020$9,800$43,180$24,5003,551
305C CR42006 to 2019$11,000$22,000$12,000None shown
304C CR and 305C CR: recall reference — Dated CPSC search
Search dateDatabaseNames queriedSearch result
2026-09-24U.S. Consumer Product Safety CommissionCat together with the excavator 304C CR, 305C CRNo matching recall in this search

Sources for this page

Evidence classDocument, classification and recorded date
Reference site
  • Reference site: Cat 304C CR — RitchieSpecs. Observed 2026-09-24.
Reference site
  • Reference site: Cat 305C CR — RitchieSpecs. Observed 2026-09-24.
Forum threads
Forum threads
Used-market listings
Federal agency data

Cat 304C CR and 305C CR: Configuration records

304C CR
SpecificationSource figure
Dimensions and weight
Width To Outside Of Tracks6.5 ft
Length Of Track On Ground8.5 ft
Height To Top Of Cab8.33 ft
Tail Swing Radius3.5 ft
Maximum Dump Height - Long Stick12.8 ft
Maximum Dump Height - Standard Stick12.11 ft
Maximum Horizontal Reach - Long Stick19.13 ft
Maximum Horizontal Reach - Standard Stick17.91 ft
Maximum Reach - Ground Level - Standard Stick17.9 ft
Maximum Vertical Dig Depth - Standard Stick8 ft
Removal Counterweight Clearance2 ft
Shipping Height8.37 ft
Maximum Cutting Height - Long Stick17.98 ft
Length - Center Of Rollers17.91 ft
Shipping Length17 ft
Height - Over Cab8.37 ft
Swing Radius - Rear3.51 ft
Maximum Cutting Height - Standard Stick17.32 ft
Maximum Digging Depth - Long Stick12.11 ft
Maximum Digging Depth - Standard Stick10.8 ft
Track Shoe Width1.31 ft
Transport Width6.5 ft
Width - Over Track6.5 ft
Engine
Number Of Cylinders4
Engine ModelS4Q2
Gross Power43.2 hp
Net Power42 hp
Power Measured @2,400 rpm
Operational
Fuel Capacity19.1 gal
Cooling System Fluid Capacity3 gal
Hydraulic System Fluid Capacity20.6 gal
Operating Voltage12 V
Engine Oil Capacity1.9 gal
Alternator Supplied Amperage50 amps
Hydraulic System Relief Valve Pressure3,553 psi
Hydraulic Pump Flow Capacity31.4 gpm
Swing Mechanism
Swing Speed9 rpm
Weights
Operating Weight - With Cab10,844 lb
Travel System
Maximum Traction Force - High Speed5,170 lb
Maximum Traction Force - Low Speed10,027 lb
Gradeability - Maximum - High30 degrees
Travel Speed - High2.9 mph
Travel Speed - Low1.6 mph
Service Refill Capacities
Cooling System2.9 gal
Fuel Tank19 gal
Hydraulic Tank12.7 gal
Engine Oil1.8 gal
Hydraulic System
Operating Pressure - Swing2,553 psi
Operating Pressure - Equipment3,553 psi
Operating Pressure - Travel3,553 psi
Digging Force - Stick - Standard5,553 lb
Digging Force - Stick - Long4,788 lb
Digging Force - Bucket10,049 lb
Auxiliary Circuit - Primary (245 Bar/3,553 Psi)18.5 gpm
Auxiliary Circuits - Secondary - At 174 Bar9.25 gpm
Swing System
Machine Swing Speed9 rpm
Boom Swing - Left - Without Stop80 degrees
Boom Swing - Left - With Stop60 degrees
Blade
Blade height15 in
Blade width6.5 ft
Lift Height17 in
Boom/Stick Option (Hex) 1
Max Vertical Wall Digging Depth8 ft
Boom/Stick Option (Hex) 1Standard Stick
Undercarriage
Shoe Size16 in
Sound Levels
Cab80 dB(A)
Canopy78 dB(A)
Msc Comments
Msc Spec Date3/06
Additional specifications
Shipping Length Of Unit17 ft
Shipping Height Of Unit8.33 ft
Max Cutting Height17.33 ft
Max Loading Height12.08 ft
Max Reach Along Ground17.93 ft
Max Digging Depth10.83 ft
Ground Clearance1.12 ft
Track Gauge5.18 ft
Max Travel Speed2.8 mph
Boom Swing - Right50 degrees
Displacement153 cu in
Operating Weight10,844 lb
Dig Depth21 in
Hydraulic System20.6 gal
Bore3.5 in
Stroke4.1 in

Source

305C CR
SpecificationSource figure
Dimensions and weight
Width To Outside Of Tracks6.5 ft
Length Of Track On Ground8.5 ft
Height To Top Of Cab8.25 ft
Tail Swing Radius3.25 ft
Maximum Dump Height - Long Stick13.29 ft
Maximum Dump Height - Standard Stick12.5 ft
Maximum Horizontal Reach - Long Stick19.86 ft
Maximum Horizontal Reach - Standard Stick18.54 ft
Maximum Reach - Ground Level - Standard Stick18.61 ft
Maximum Vertical Dig Depth - Standard Stick9.6 ft
Removal Counterweight Clearance2 ft
Shipping Height8.37 ft
Maximum Cutting Height - Long Stick18.47 ft
Length - Center Of Rollers18.54 ft
Shipping Length17.5 ft
Height - Over Cab8.37 ft
Swing Radius - Rear3.5 ft
Maximum Cutting Height - Standard Stick17.62 ft
Maximum Digging Depth - Standard Stick11.4 ft
Track Shoe Width1.4 ft
Transport Width6.5 ft
Maximum Vertical Dig Depth - Long Stick12.76 ft
Engine
Number Of Cylinders4
Engine ModelS4Q2-T
Gross Power48.5 hp
Net Power47 hp
Power Measured @2,400 rpm
Operational
Fuel Capacity19 gal
Cooling System Fluid Capacity2.9 gal
Hydraulic System Fluid Capacity20.6 gal
Operating Voltage12 V
Engine Oil Capacity1.9 gal
Alternator Supplied Amperage50 amps
Hydraulic System Relief Valve Pressure3,553 psi
Hydraulic Pump Flow Capacity34.3 gpm
Swing Mechanism
Swing Speed9 rpm
Weights
Operating Weight - With Cab11,725 lb
Travel System
Maximum Traction Force - High Speed6,092 lb
Maximum Traction Force - Low Speed10,813 lb
Gradeability - Maximum - High30 degrees
Travel Speed - High2.9 mph
Travel Speed - Low1.6 mph
Service Refill Capacities
Cooling System2.9 gal
Fuel Tank19 gal
Hydraulic Tank12.7 gal
Engine Oil1.8 gal
Hydraulic System
Operating Pressure - Swing2,669 psi
Operating Pressure - Equipment3,553 psi
Operating Pressure - Travel3,553 psi
Digging Force - Stick - Standard6,497 lb
Digging Force - Stick - Long5,575 lb
Digging Force - Bucket11,443 lb
Auxiliary Circuit - Primary (245 Bar/3,553 Psi)18.5 gpm
Auxiliary Circuits - Secondary - At 174 Bar9.25 gpm
Swing System
Machine Swing Speed9 rpm
Boom Swing - Left - Without Stop80 degrees
Boom Swing - Left - With Stop60 degrees
Blade
Blade height15 in
Blade width6.5 ft
Lift Height17 in
Boom/Stick Option (Hex) 1
Max Vertical Wall Digging Depth8.25 ft
Boom/Stick Option (Hex) 1Standard Stick
Undercarriage
Shoe Size16 in
Sound Levels
Cab78 dB(A)
Canopy77 dB(A)
Msc Comments
Msc Spec Date3/06
Additional specifications
Shipping Length Of Unit17.5 ft
Shipping Height Of Unit8.33 ft
Max Cutting Height17.58 ft
Max Loading Height12.5 ft
Max Reach Along Ground18.58 ft
Max Digging Depth11.42 ft
Ground Clearance1.12 ft
Track Gauge5.2 ft
Max Travel Speed2.8 mph
Boom Swing - Right50 degrees
Displacement153 cu in
Operating Weight11,725 lb
Dig Depth21 in
Hydraulic System20.6 gal
Bore3.5 in
Stroke4.1 in

Source

Compare Cat 304C CR, 305C CR
Boom/Stick Option (Hex) 1
Specification304C CR305C CR
Shipping Length Of Unit17 ft17.5 ft
Shipping Height Of Unit8.33 ft8.33 ft
Max Cutting Height17.33 ft17.58 ft
Max Loading Height12.08 ft12.5 ft
Max Reach Along Ground17.93 ft18.58 ft
Max Vertical Wall Digging Depth8 ft8.25 ft
Max Digging Depth10.83 ft11.42 ft
Boom/Stick Option (Hex) 1Standard StickStandard Stick
Dimensions and weight
Specification304C CR305C CR
Width To Outside Of Tracks6.5 ft6.5 ft
Length Of Track On Ground8.5 ft8.5 ft
Ground Clearance1.12 ft1.12 ft
Height To Top Of Cab8.33 ft8.25 ft
Tail Swing Radius3.5 ft3.25 ft
Track Gauge5.18 ft5.2 ft
Maximum Dump Height - Long Stick12.8 ft13.29 ft
Maximum Dump Height - Standard Stick12.11 ft12.5 ft
Maximum Horizontal Reach - Long Stick19.13 ft19.86 ft
Maximum Horizontal Reach - Standard Stick17.91 ft18.54 ft
Maximum Reach - Ground Level - Standard Stick17.9 ft18.61 ft
Maximum Vertical Dig Depth - Standard Stick8 ft9.6 ft
Removal Counterweight Clearance2 ft2 ft
Shipping Height8.37 ft8.37 ft
Maximum Cutting Height - Long Stick17.98 ft18.47 ft
Length - Center Of Rollers17.91 ft18.54 ft
Shipping Length17 ft17.5 ft
Height - Over Cab8.37 ft8.37 ft
Swing Radius - Rear3.51 ft3.5 ft
Maximum Cutting Height - Standard Stick17.32 ft17.62 ft
Maximum Digging Depth - Standard Stick10.8 ft11.4 ft
Track Shoe Width1.31 ft1.4 ft
Transport Width6.5 ft6.5 ft
Undercarriage
Specification304C CR305C CR
Shoe Size16 in16 in
Max Travel Speed2.8 mph2.8 mph
Swing System
Specification304C CR305C CR
Machine Swing Speed9 rpm9 rpm
Boom Swing - Left - Without Stop80 degrees80 degrees
Boom Swing - Left - With Stop60 degrees60 degrees
Boom Swing - Right50 degrees50 degrees
Engine
Specification304C CR305C CR
Number Of Cylinders44
Engine ModelS4Q2S4Q2-T
Gross Power43.2 hp48.5 hp
Net Power42 hp47 hp
Power Measured @2,400 rpm2,400 rpm
Displacement153 cu in153 cu in
Operational
Specification304C CR305C CR
Operating Weight10,844 lb11,725 lb
Fuel Capacity19.1 gal19 gal
Cooling System Fluid Capacity3 gal2.9 gal
Hydraulic System Fluid Capacity20.6 gal20.6 gal
Operating Voltage12 V12 V
Engine Oil Capacity1.9 gal1.9 gal
Alternator Supplied Amperage50 amps50 amps
Hydraulic System Relief Valve Pressure3,553 psi3,553 psi
Hydraulic Pump Flow Capacity31.4 gpm34.3 gpm
Swing Mechanism
Specification304C CR305C CR
Swing Speed9 rpm9 rpm
Weights
Specification304C CR305C CR
Operating Weight - With Cab10,844 lb11,725 lb
Blade
Specification304C CR305C CR
Blade height15 in15 in
Blade width6.5 ft6.5 ft
Lift Height17 in17 in
Dig Depth21 in21 in
Hydraulic System
Specification304C CR305C CR
Operating Pressure - Swing2,553 psi2,669 psi
Operating Pressure - Equipment3,553 psi3,553 psi
Operating Pressure - Travel3,553 psi3,553 psi
Digging Force - Stick - Standard5,553 lb6,497 lb
Digging Force - Stick - Long4,788 lb5,575 lb
Digging Force - Bucket10,049 lb11,443 lb
Auxiliary Circuit - Primary (245 Bar/3,553 Psi)18.5 gpm18.5 gpm
Auxiliary Circuits - Secondary - At 174 Bar9.25 gpm9.25 gpm
Service Refill Capacities
Specification304C CR305C CR
Cooling System2.9 gal2.9 gal
Fuel Tank19 gal19 gal
Hydraulic Tank12.7 gal12.7 gal
Hydraulic System20.6 gal20.6 gal
Engine Oil1.8 gal1.8 gal
Engine Dimensions
Specification304C CR305C CR
Bore3.5 in3.5 in
Stroke4.1 in4.1 in
Displacement153 cu in153 cu in
Sound Levels
Specification304C CR305C CR
Cab80 dB(A)78 dB(A)
Canopy78 dB(A)77 dB(A)
Msc Comments
Specification304C CR305C CR
Msc Spec Date3/063/06
Travel System
Specification304C CR305C CR
Maximum Traction Force - High Speed5,170 lb6,092 lb
Maximum Traction Force - Low Speed10,027 lb10,813 lb
Gradeability - Maximum - High30 degrees30 degrees
Travel Speed - High2.9 mph2.9 mph
Travel Speed - Low1.6 mph1.6 mph

More in Cat: 304/305 CR, M320, 214.