Machine models

Cat 304 and 305 CR specifications

Entries in this reference
Listing-entry count
2

Short answer

Cat 304 and 305 CR: excavators.

Selected configuration figures
Configuration	Documented field and quantity
304	Net Power 45 hp Operating Weight 9,867 lb
305 CR - Tier 4 / Stage V	Net Power 45 hp Operating Weight 12,688 lb

304 and 305 CR specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Cat	304 and 305 CR	2	304 and 305 CR - Tier 4 / Stage V

Weights
Specification	304	305 CR - Tier 4 / Stage V
Operating Weight	9,867 lb	12,688 lb
Minimum Operating Weight with Canopy*	8,655 lb	11,016 lb
Maximum Operating Weight with Canopy**	9,647 lb	12,469 lb
Minimum Operating Weight with Cab*	8,875 lb	11,234 lb
Maximum Operating Weight with Cab**	9,867 lb	12,688 lb

Dimensions Long Stick
Specification	304	305 CR - Tier 4 / Stage V
Dig Depth	138.2 in	144.5 in
Vertical Wall	99.8 in	100.8 in
Maximum Reach - Ground Level	214.4 in	229.7 in
Maximum Reach	219.3 in	235.8 in
Maximum Dig Height	201.8 in	210.8 in
Maximum Dump Clearance	147.2 in	151.4 in
Boom In Reach	92.1 in	101.6 in
Tail Swing without Counterweight	47.4 in	43.1 in
Tail Swing with Counterweight	51.2 in	47.2 in
Maximum Blade Height	16.5 in	15.2 in
Maximum Blade Depth	18.7 in	23.4 in
Boom Height - Shipping Position	75.2 in	74.6 in
O/A Shipping Height	100 in	100.4 in
Swing Bearing - Height	21.9 in	24.4 in
O/A Undercarriage Length	87 in	101.6 in
Overall Shipping Length*	194.9 in	210.2 in
Boom Swing - Right	28.7 in	34.1 °
Boom Swing - Left	20.9 in	615 mm
Track Belt/Shoe Width	13.8 in	15.7 in
Track Width	66.9 in	78 in
Ground Clearance	12 in	13.2 in
Stick Length	66.7 in	63 in

Weight Increase from Minimum Configuration
Specification	304	305 CR - Tier 4 / Stage V
Counterweight	496 lb	534 lb
Long Stick	66 lb	75 lb
Angle Blade	243 lb	225 lb

Specification	304
Steel Tracks	430 lb

Specification	305 CR - Tier 4 / Stage V
Steel Tracks with Pads	827 lb

Dimensions Standard Stick
Specification	304	305 CR - Tier 4 / Stage V
Dig Depth	126.4 in	134.6 in
Vertical Wall	94.3 in	91.9 in
Maximum Reach - Ground Level	204.7 in	220.1 in
Maximum Reach	209.8 in	226.6 in
Maximum Dig Height	198.4 in	205.3 in
Maximum Dump Clearance	143.5 in	145.7 in
Boom In Reach	88.8 in	101.2 in
Boom Height - Shipping Position	63.8 in	71.7 in
Stick Length	54.9 in	53.2 in

Specification	305 CR - Tier 4 / Stage V
Overall Shipping Length*	208.9 in
Boom Swing - Left	24.2 °

Travel System
Specification	304	305 CR - Tier 4 / Stage V
Travel Speed - High	3.2 mph	3.1 mph
Travel Speed - Low	2.2 mph	1.7 mph
Maximum Traction Force - High Speed	4271 lbf	5553 lbf
Maximum Traction Force - Low Speed	7329 lbf	11353 lbf
Ground Pressure - Minimum Weight	4.2 psi	4 psi
Ground Pressure - Maximum Weight	4.9 psi	4.7 psi
Gradeability - Maximum	30 degrees	30 degrees

Service Refill Capacities
Specification	304	305 CR - Tier 4 / Stage V
Cooling System	2.9 gal (US)	2.9 gal (US)
Engine Oil	1.6 gal (US)	1.6 gal (US)
Fuel Tank	17 gal (US)	17 gal (US)
Hydraulic Tank	14 gal (US)	16 gal (US)
Hydraulic System	17 gal (US)	20 gal (US)

Hydraulic System
Specification	304	305 CR - Tier 4 / Stage V
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump	Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm	25 gpm	35 gpm
Operating Pressure - Equipment	3,553 psi	3,843 psi
Operating Pressure - Travel	3,553 psi	3,843 psi
Operating Pressure - Swing	2,611 psi	2,901 psi
Auxiliary Circuit - Primary - Pressure	3,553 psi	3,843 psi
Auxiliary Circuit - Secondary - Flow	7 gpm	7 gpm
Auxiliary Circuit - Secondary - Pressure	3,553 psi	3,843 psi
Digging Force - Stick - Standard	4721 lbf	6362 lbf
Digging Force - Stick - Long	4316 lbf	5665 lbf
Digging Force - Bucket	8588 lbf	11061 lbf

Specification	305 CR - Tier 4 / Stage V
Auxiliary Circuit - Primary - Flow	21 gpm

Swing System
Specification	304	305 CR - Tier 4 / Stage V
Machine Swing Speed	9 r/min	9 r/min
Boom Swing - Left	78 Degrees	72 Degrees
Boom Swing - Right	50 Degrees	50 Degrees

Blade
Specification	304	305 CR - Tier 4 / Stage V
Straight Blade Width	66.9 in	78 in
Straight Blade Height	14.2 in	15.4 in
Angle Blade Width	66.9 in	78 in
Angle Blade Height	14.2 in	15.7 in
Angle Blade - Left	25 Degrees	25 degrees
Angle Blade - Right	25 Degrees	25 degrees

Certification Cab and Canopy
Specification	304	305 CR - Tier 4 / Stage V
Roll Over Protective Structure (ROPS)	ISO 12117-2:2008	ISO 12117-2:2008
Top Guard	ISO 10262:1998 (Level I)	ISO 10262:1998 Level I

Air Conditioning System
Specification	304	305 CR - Tier 4 / Stage V
Air Conditioning	The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe)	The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe)

Sound
Specification	304	305 CR - Tier 4 / Stage V
Operator Sound Pressure (ISO 6396:2008)	76 dB(A)	76 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)	97 dB(A)	97 dB(A)

Sustainability
Specification	304	305 CR - Tier 4 / Stage V
Recyclability	96%	96%

Engine
Specification	304	305 CR - Tier 4 / Stage V
Net Power	45 hp	45 hp
Engine Model	C1.7 Turbo	C1.7 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC	45 hp	45 hp
Bore	3.3 in	3.3 in
Stroke	3.9 in	3.9 in
Displacement	101 in³	101 in³
Emissions	Meets US EPA Tier 4 Final and EU Stage V emission standards	The Cat® C1.7 engine meets US EPA Tier 4 Final and EU Stage V emission standards

Specification	304
Gross Power - ISO 14396	48.4 hp

Specification	305 CR - Tier 4 / Stage V
Gross Power - 2,400 rpm - SAE J1995:2014	48.4 hp

Variants — Source comparison annotation
Source guide	Differing-field count reported
304 and 305 CR	72

Ratios
Figure	304	305 CR - Tier 4 / Stage V
Engine horsepower per 1,000 lb of weight	4.6	3.5
Pump flow per engine horsepower	0.56 gpm	0.78 gpm
Fuel tank per engine horsepower	0.38 gal	0.38 gal

Cat 304 and 305 CR: excavator

History and service record of 304 and 305 CR

The last Next Generation minis. Completing its family of Next Generation compact hydraulic excavators, Caterpillar unveiled the reengineered 304 and 305 CR in 2021; they were the final mini excavators reengineered to the Next Generation concept. New Cat 304 and 305 CR mini hydraulic excavators, Highways Today, 21 November 2021; Cat 304, 305 CR mini excavators: better performance, lower costs, Equipment World.
Claimed gain over the E2 series. Cat described the 4-tonne 304 and 5-tonne 305 CR as delivering more power to the pumps, higher bucket breakout forces and deeper standard digging depths, which it said raise performance by up to 20 percent over the E2-series machines they follow. New Cat 304 and 305 CR mini hydraulic excavators, Highways Today, 21 November 2021.
Track width. Construction Equipment's product entry says the 304 has a reduced-radius design with a 66.9-inch track width, 10 inches slimmer than the 304 E2. Caterpillar 304, 305 CR mini excavators, Construction Equipment.
2025 updates. In October 2025 Caterpillar announced enhancements to the 305 CR alongside the 308 CR, 309 CR and 310, including software updates for the 305 CR that dealers can apply. Caterpillar announces updates to Cat 5- to 10-tonne class mini hydraulic excavators, Caterpillar, 7 October 2025.
Owner-reported fault code. An owner of a 2023 305 CR told Heavy Equipment Forums that the machine showed an active code 6078-3, which the thread translates as a high-voltage fault on the fuel/water level sensor. Cat 305 CR topic page, Heavy Equipment Forums.

304 and 305 CR: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	excavator	Cat and the 304, 305 CR	157

Topics named by those titles
Title topic	Titles
hydraulics	23
electrical and sensors	7
starting and cranking	6

Topic in the title	Threads	Share of matching threads
hydraulics	23	15%
electrical and sensors	7	4%
starting and cranking	6	4%
fuel system	6	4%
transmission and drive	4	3%

CAT 304e Ttn Serial Number Hydraulic Schematic (Heavy Equipment Forums, 2026-08-20)
CAT 304cr Bucket Crowd Slow And Dipper Stick In Slow (Heavy Equipment Forums, 2026-05-11)
05 CAT 305 Cr Electrical Problem No Start Ignition Dead (Heavy Equipment Forums, 2026-05-08)
CAT 304 Weak Starter (Heavy Equipment Forums, 2026-04-22)

Used market for the 304 and 305 CR — Dated first-page listing snapshot
Observation date	Listing source	Equipment search	Listings
2026-09-24	MachineryTrader	Cat excavator	389

Model	Listed	Model years	Lowest asking	Highest asking	Median asking	Median hours
304	152	2008 to 2025	$20,000	$85,000	$57,500	597
305 CR	237	2012 to 2026	$35,500	$93,500	$57,000	1,098

304 and 305 CR: recall reference — Dated CPSC search
Search date	Database	Names queried	Search result
2026-09-24	U.S. Consumer Product Safety Commission	Cat together with the excavator 304, 305 CR	No matching recall in this search

Sources for this page
Evidence class	Document, classification and recorded date
Manufacturer	Manufacturer: Cat 304 — Caterpillar Inc.. Observed 2026-09-24.
Manufacturer	Manufacturer: Cat 305 CR - Tier 4 / Stage V — Caterpillar Inc.. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Cat 304 and 305 CR — Heavy Equipment Forums. Observed 2026-09-24.
Published history	Published history Source: New Cat 304 and 305 CR mini hydraulic excavators, Highways Today, 21 November 2021 — Highways. Observed 2026-09-30.
Published history	Published history Source: Cat 304, 305 CR mini excavators: better performance, lower costs, Equipment World — Equipment World. Observed 2026-09-30.
Published history	Published history Source: Caterpillar 304, 305 CR mini excavators, Construction Equipment — Construction Equipment. Observed 2026-09-30.
Published history	Published history Source: Caterpillar announces updates to Cat 5- to 10-tonne class mini hydraulic excavators, Caterpillar, 7 October 2025 — Caterpillar. Observed 2026-09-30.
Published history	Published history Source: Cat 305 CR topic page, Heavy Equipment Forums — Heavyequipmentforums. Observed 2026-09-30.
Used-market listings	Used-market listings: MachineryTrader listings for Cat 304 — MachineryTrader. Observed 2026-09-24.
Federal agency data	Federal agency data: Recall database search for Cat — U.S. Consumer Product Safety Commission. Observed 2026-09-24.

Cat 304 and 305 CR: Configuration records

304

Specification	Source figure
Engine
Engine Model	C1.7 Turbo
Net Power	45 hp
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC	45 hp
Gross Power - ISO 14396	48.4 hp
Emissions	Meets US EPA Tier 4 Final and EU Stage V emission standards
Weights
Minimum Operating Weight with Canopy*	8,655 lb
Maximum Operating Weight with Canopy**	9,647 lb
Minimum Operating Weight with Cab*	8,875 lb
Maximum Operating Weight with Cab**	9,867 lb
Dimensions Long Stick
Tail Swing without Counterweight	47.4 in
Tail Swing with Counterweight	51.2 in
Maximum Blade Height	16.5 in
Maximum Blade Depth	18.7 in
O/A Shipping Height	100 in
Swing Bearing - Height	21.9 in
O/A Undercarriage Length	87 in
Track Belt/Shoe Width	13.8 in
Track Width	66.9 in
Weight Increase from Minimum Configuration
Counterweight	496 lb
Long Stick	66 lb
Steel Tracks	430 lb
Angle Blade	243 lb
Travel System
Maximum Traction Force - High Speed	4271 lbf
Maximum Traction Force - Low Speed	7329 lbf
Travel Speed - High	3.2 mph
Travel Speed - Low	2.2 mph
Ground Pressure - Minimum Weight	4.2 psi
Ground Pressure - Maximum Weight	4.9 psi
Gradeability - Maximum	30 degrees
Service Refill Capacities
Cooling System	2.9 gal (US)
Fuel Tank	17 gal (US)
Hydraulic Tank	14 gal (US)
Engine Oil	1.6 gal (US)
Hydraulic System
Operating Pressure - Swing	2,611 psi
Operating Pressure - Equipment	3,553 psi
Operating Pressure - Travel	3,553 psi
Digging Force - Stick - Standard	4721 lbf
Digging Force - Stick - Long	4316 lbf
Digging Force - Bucket	8588 lbf
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm	25 gpm
Auxiliary Circuit - Primary - Pressure	3,553 psi
Auxiliary Circuit - Secondary - Flow	7 gpm
Auxiliary Circuit - Secondary - Pressure	3,553 psi
Swing System
Machine Swing Speed	9 r/min
Blade
Straight Blade Width	66.9 in
Straight Blade Height	14.2 in
Angle Blade Width	66.9 in
Angle Blade Height	14.2 in
Angle Blade - Left	25 Degrees
Angle Blade - Right	25 Degrees
Certification Cab and Canopy
Roll Over Protective Structure (ROPS)	ISO 12117-2:2008
Top Guard	ISO 10262:1998 (Level I)
Air Conditioning System
Air Conditioning	The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe)
Sound
Operator Sound Pressure (ISO 6396:2008)	76 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)	97 dB(A)
Sustainability
Recyclability	96%
304/305 CR standard-stick geometry
Dig Depth (standard stick)	126.4 in
Vertical Wall (standard stick)	94.3 in
Maximum Reach - Ground Level (standard stick)	204.7 in
Maximum Reach (standard stick)	209.8 in
Maximum Dig Height (standard stick)	198.4 in
Maximum Dump Clearance (standard stick)	143.5 in
Boom In Reach (standard stick)	88.8 in
Boom Height - Shipping Position (standard stick)	63.8 in
Overall Shipping Length* (standard stick)	194.9 in
Stick Length (standard stick)	54.9 in
304/305 CR long-stick geometry
Dig Depth (long stick)	138.2 in
Vertical Wall (long stick)	99.8 in
Maximum Reach - Ground Level (long stick)	214.4 in
Maximum Reach (long stick)	219.3 in
Maximum Dig Height (long stick)	201.8 in
Maximum Dump Clearance (long stick)	147.2 in
Boom In Reach (long stick)	92.1 in
Boom Height - Shipping Position (long stick)	75.2 in
Overall Shipping Length* (long stick)	194.9 in
Stick Length (long stick)	66.7 in
304/305 CR configuration notes
Minimum-weight configuration	Rubber tracks, operator, full fuel tank, standard stick, straight blade, no bucket and no extra counterweight
Maximum-weight configuration	Steel tracks, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket
Shipping-length condition	Overall shipping length depends on blade position during shipment
Boom swing right, dimensional-table entry	28.7 in / 730 mm; a length, separate from the Swing System angle
Boom swing left, dimensional-table entry	20.9 in / 530 mm; a length, separate from the Swing System angle
Additional specifications
Boom Swing - Right	50 Degrees
Boom Swing - Left	78 Degrees
Displacement	101 in³
Bore	3.3 in
Stroke	3.9 in
Operating Weight	9,867 lb
Hydraulic System	17 gal (US)
Ground Clearance	12 in

Source

305 CR - Tier 4 / Stage V

Specification	Source figure
Engine
Engine Model	C1.7 Turbo
Net Power	45 hp
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC	45 hp
Emissions	The Cat® C1.7 engine meets US EPA Tier 4 Final and EU Stage V emission standards
Gross Power - 2,400 rpm - SAE J1995:2014	48.4 hp
Weights
Minimum Operating Weight with Canopy*	11,016 lb
Maximum Operating Weight with Canopy**	12,469 lb
Minimum Operating Weight with Cab*	11,234 lb
Maximum Operating Weight with Cab**	12,688 lb
Dimensions Long Stick
Tail Swing without Counterweight	43.1 in
Tail Swing with Counterweight	47.2 in
Maximum Blade Height	15.2 in
Maximum Blade Depth	23.4 in
O/A Shipping Height	100.4 in
Swing Bearing - Height	24.4 in
O/A Undercarriage Length	101.6 in
Track Belt/Shoe Width	15.7 in
Track Width	78 in
Weight Increase from Minimum Configuration
Counterweight	534 lb
Long Stick	75 lb
Angle Blade	225 lb
Steel Tracks with Pads	827 lb
Travel System
Maximum Traction Force - High Speed	5553 lbf
Maximum Traction Force - Low Speed	11353 lbf
Travel Speed - High	3.1 mph
Travel Speed - Low	1.7 mph
Ground Pressure - Minimum Weight	4 psi
Ground Pressure - Maximum Weight	4.7 psi
Gradeability - Maximum	30 degrees
Service Refill Capacities
Cooling System	2.9 gal (US)
Fuel Tank	17 gal (US)
Hydraulic Tank	16 gal (US)
Engine Oil	1.6 gal (US)
Hydraulic System
Operating Pressure - Swing	2,901 psi
Operating Pressure - Equipment	3,843 psi
Operating Pressure - Travel	3,843 psi
Digging Force - Stick - Standard	6362 lbf
Digging Force - Stick - Long	5665 lbf
Digging Force - Bucket	11061 lbf
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm	35 gpm
Auxiliary Circuit - Primary - Pressure	3,843 psi
Auxiliary Circuit - Secondary - Flow	7 gpm
Auxiliary Circuit - Secondary - Pressure	3,843 psi
Auxiliary Circuit - Primary - Flow	21 gpm
Swing System
Machine Swing Speed	9 r/min
Blade
Straight Blade Width	78 in
Straight Blade Height	15.4 in
Angle Blade Width	78 in
Angle Blade Height	15.7 in
Angle Blade - Left	25 degrees
Angle Blade - Right	25 degrees
Certification Cab and Canopy
Roll Over Protective Structure (ROPS)	ISO 12117-2:2008
Top Guard	ISO 10262:1998 Level I
Air Conditioning System
Air Conditioning	The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe)
Sound
Operator Sound Pressure (ISO 6396:2008)	76 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)	97 dB(A)
Sustainability
Recyclability	96%
304/305 CR standard-stick geometry
Dig Depth (standard stick)	134.6 in
Vertical Wall (standard stick)	91.9 in
Maximum Reach - Ground Level (standard stick)	220.1 in
Maximum Reach (standard stick)	226.6 in
Maximum Dig Height (standard stick)	205.3 in
Maximum Dump Clearance (standard stick)	145.7 in
Boom In Reach (standard stick)	101.2 in
Boom Height - Shipping Position (standard stick)	71.7 in
Overall Shipping Length* (standard stick)	208.9 in
Stick Length (standard stick)	53.2 in
304/305 CR long-stick geometry
Dig Depth (long stick)	144.5 in
Vertical Wall (long stick)	100.8 in
Maximum Reach - Ground Level (long stick)	229.7 in
Maximum Reach (long stick)	235.8 in
Maximum Dig Height (long stick)	210.8 in
Maximum Dump Clearance (long stick)	151.4 in
Boom In Reach (long stick)	101.6 in
Boom Height - Shipping Position (long stick)	74.6 in
Overall Shipping Length* (long stick)	210.2 in
Stick Length (long stick)	63 in
304/305 CR configuration notes
Minimum-weight configuration	Rubber tracks, operator, full fuel tank, standard stick, straight blade, no bucket and no extra counterweight
Maximum-weight configuration	Steel tracks with pads, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket
Shipping-length condition	Overall shipping length depends on blade position during shipment
Dimensional-table unit discrepancy	The right entry is printed as 34.1° / 865 mm and the left as 24.2° / 615 mm; mixed angular and linear units are unresolved. Do not use those entries as verified swing angles. The separate Swing System entries remain 50 Degrees right and 72 Degrees left.
Additional specifications
Boom Swing - Right	50 Degrees
Boom Swing - Left	72 Degrees
Displacement	101 in³
Bore	3.3 in
Stroke	3.9 in
Operating Weight	12,688 lb
Hydraulic System	20 gal (US)
Ground Clearance	13.2 in

Source

Compare Cat 304 and 305 CR configurations

Minimum weights include rubber tracks, operator, full fuel tank, standard stick and straight blade, without bucket or extra counterweight. Maximum weights include operator, full fuel tank, long stick, straight blade and extra counterweight, without bucket; the 304 basis uses steel tracks and the 305 CR basis uses steel tracks with pads.

Overall shipping length depends on blade position. Keep the selected stick, fitted equipment and actual transport arrangement with a clearance inquiry.

Hydraulic flow and pressure entries describe their stated quantities; separate headline values cannot establish simultaneous output for a proposed tool. Digging geometry is not a lifting chart. The 305 CR source’s mixed-unit dimensional boom-swing entries remain identified separately in its complete record.

Weights
Specification	304	305 CR - Tier 4 / Stage V
Operating Weight	9,867 lb	12,688 lb
Minimum Operating Weight with Canopy*	8,655 lb	11,016 lb
Maximum Operating Weight with Canopy**	9,647 lb	12,469 lb
Minimum Operating Weight with Cab*	8,875 lb	11,234 lb
Maximum Operating Weight with Cab**	9,867 lb	12,688 lb

Dimensions Long Stick
Specification	304	305 CR - Tier 4 / Stage V
Dig Depth	138.2 in	144.5 in
Vertical Wall	99.8 in	100.8 in
Maximum Reach - Ground Level	214.4 in	229.7 in
Maximum Reach	219.3 in	235.8 in
Maximum Dig Height	201.8 in	210.8 in
Maximum Dump Clearance	147.2 in	151.4 in
Boom In Reach	92.1 in	101.6 in
Boom Height - Shipping Position	75.2 in	74.6 in
Overall Shipping Length*	194.9 in	210.2 in
Stick Length	66.7 in	63 in

Dimensions Standard Stick
Specification	304	305 CR - Tier 4 / Stage V
Dig Depth	126.4 in	134.6 in
Vertical Wall	94.3 in	91.9 in
Maximum Reach - Ground Level	204.7 in	220.1 in
Maximum Reach	209.8 in	226.6 in
Maximum Dig Height	198.4 in	205.3 in
Maximum Dump Clearance	143.5 in	145.7 in
Boom In Reach	88.8 in	101.2 in
Boom Height - Shipping Position	63.8 in	71.7 in
Overall Shipping Length*	194.9 in	208.9 in
Stick Length	54.9 in	53.2 in

Travel System
Specification	304	305 CR - Tier 4 / Stage V
Travel Speed - High	3.2 mph	3.1 mph
Travel Speed - Low	2.2 mph	1.7 mph
Maximum Traction Force - High Speed	4271 lbf	5553 lbf
Maximum Traction Force - Low Speed	7329 lbf	11353 lbf
Ground Pressure - Minimum Weight	4.2 psi	4 psi
Ground Pressure - Maximum Weight	4.9 psi	4.7 psi
Gradeability - Maximum	30 degrees	30 degrees

Hydraulic System
Specification	304	305 CR - Tier 4 / Stage V
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump	Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm	25 gpm	35 gpm
Operating Pressure - Equipment	3,553 psi	3,843 psi
Operating Pressure - Travel	3,553 psi	3,843 psi
Operating Pressure - Swing	2,611 psi	2,901 psi
Auxiliary Circuit - Primary - Pressure	3,553 psi	3,843 psi
Auxiliary Circuit - Secondary - Flow	7 gpm	7 gpm
Auxiliary Circuit - Secondary - Pressure	3,553 psi	3,843 psi
Digging Force - Stick - Standard	4721 lbf	6362 lbf
Digging Force - Stick - Long	4316 lbf	5665 lbf
Digging Force - Bucket	8588 lbf	11061 lbf

Swing System
Specification	304	305 CR - Tier 4 / Stage V
Machine Swing Speed	9 r/min	9 r/min
Boom Swing - Left	78 Degrees	72 Degrees
Boom Swing - Right	50 Degrees	50 Degrees

Engine
Specification	304	305 CR - Tier 4 / Stage V
Net Power	45 hp	45 hp
Engine Model	C1.7 Turbo	C1.7 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC	45 hp	45 hp

More in Cat: 214, 304C CR/305C CR, M312/M315/M318.

Cat 304 and 305 CR specifications

Cat 304 and 305 CR: excavator

History and service record of 304 and 305 CR

Sources for this page

Cat 304 and 305 CR: Configuration records

Compare Cat 304 and 305 CR configurations