Machine models

Kubota U55-4A1 to U55-4W1 specifications

Entries in this reference
Listing-entry count
4

Short answer

Kubota U55-4A1 to U55-4W1: excavators.

Selected configuration figures
Configuration	Documented field and quantity
U55-4A1	Gross Power 49.5 hp Hydraulic Pump Flow Capacity 11.9 gpm
U55-4G1	Gross Power 49.5 hp Hydraulic Pump Flow Capacity 11.9 gpm
U55-4GA1	Gross Power 49.5 hp Hydraulic Pump Flow Capacity 11.9 gpm
U55-4W1	Gross Power 49.5 hp Hydraulic Pump Flow Capacity 11.9 gpm

U55-4A1 to U55-4W1 specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Kubota	U55-4A1 to U55-4W1	4	U55-4A1, U55-4G1, U55-4GA1, and U55-4W1

Boom/Stick Option (Hex) 1
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Max Vertical Wall Digging Depth	4.98 ft	4.98 ft	4.98 ft	4.98 ft
Max Digging Depth	11.87 ft	11.87 ft	11.87 ft	11.87 ft
Mximum Dig Radius	239.38 in	239.38 in	239.38 in	239.38 in
Max Digging Height	18.31 ft	18.31 ft	18.31 ft	18.31 ft
Max.Dumping Height	13.19 ft	13.19 ft	13.19 ft	13.19 ft

Dimensions and weight
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Ground Clearance	1.02 ft	1.02 ft	1.02 ft	1.02 ft
Tail Swing Radius	3.43 ft	3.43 ft	3.43 ft	3.43 ft
Overall Height	8.37 ft	8.37 ft	8.37 ft	8.37 ft
Overall Length	18.05 ft	18.05 ft	18.05 ft	18.05 ft
Overall Width	77.17 in	77.17 in	77.17 in	77.17 in
Crawler Length	8.21 ft	8.21 ft	8.21 ft	8.21 ft

Undercarriage
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Shoe Size	15.75 in	15.75 in	15.75 in	15.75 in

Engine
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Number Of Cylinders	4	4	4	4
Engine Make	Kubota	Kubota	Kubota	Kubota
Engine Model	V2607-CR-E4	V2607-CR-E4	V2607-CR-E4	V2607-CR-E4
Gross Power	49.5 hp	49.5 hp	49.5 hp	49.5 hp
Net Power	45.1 hp	45.1 hp	45.1 hp	45.1 hp
Power Measured @	2,200 rpm	2,200 rpm	2,200 rpm	2,200 rpm
Displacement	9,739 cu in	9,739 cu in	9,739 cu in	9,739 cu in
Model Name	U55-4A1	U55-4 (1)	U55-4GA1	U55-4W1

Operational
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Auxiliary Hydraulic Flow	19.9 gpm	19.9 gpm	19.9 gpm	19.9 gpm
Travel Speed, Low Range	2 mph	2 mph	2 mph	2 mph
Travel Speed, High Range	3.1 mph	3.1 mph	3.1 mph	3.1 mph
Auxiliary Fuel Tank	9.8 gal	9.8 gal	9.8 gal	9.8 gal
Fuel Capacity	18 gal	18 gal	18 gal	18 gal
Hydraulic System Fluid Capacity	20.9 gal	20.9 gal	20.9 gal	20.9 gal
Hydraulic Pump Flow Capacity	11.9 gpm	11.9 gpm	11.9 gpm	11.9 gpm

Swing Mechanism
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Swing Speed	8.9 rpm	8.9 rpm	8.9 rpm	8.9 rpm

Blade
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Maximum Drop Below Ground	1.4 ft	1.4 ft	1.4 ft	1.4 ft
Blade Lift Height	17.4 in	17.4 in	17.4 in	17.4 in

Boom
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Boom Swing Left	75 degrees	75 degrees	75 degrees	75 degrees
Boom Swing Right	55 degrees	55 degrees	55 degrees	55 degrees

Kubota U55-4A1 to U55-4W1: Variants

1 figure differs between the versions of the U55-4A1 to U55-4W1, in the table below.

Ratios
Figure	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Fuel tank per engine horsepower	0.40 gal	0.40 gal	0.40 gal	0.40 gal

Kubota U55-4A1 to U55-4W1: excavator

U55-4A1 to U55-4W1: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
The Farming Forum and Heavy Equipment Forums	excavator	Kubota and the U55 line that the U55-4A1, U55-4G1, U55-4GA1, U55-4W1 belongs to (no title names the exact model)	84

Topics named by those titles
Title topic	Titles
hydraulics	12
electrical and sensors	4
parts and manuals	4

Topic in the title	Threads	Share of matching threads
hydraulics	12	14%
electrical and sensors	4	5%
parts and manuals	4	5%

Kubota U55 4 Excavator 5 5t With 4 Buckets 2020 (The Farming Forum, 2026-09-21)
Kubota U55 2011 Boom Wont Raise (Heavy Equipment Forums, 2025-07-07)
Low Hydraulic Power On Kubota U55 4 (Heavy Equipment Forums, 2025-01-30)
Kubota U55 Vs Kx57 And Kx 80 For Forestry (Heavy Equipment Forums, 2025-01-28)

U55-4A1 to U55-4W1: dated market and recall observations — Dated listing search
Date	Listing index	Equipment class	Names queried	Result
2026-09-24	MachineryTrader (machinerytrader.com)	excavator	U55-4A1, U55-4G1, U55-4GA1	No matching offers in this snapshot

Dated CPSC search
Date	Database	Names queried	Result
2026-09-24	U.S. Consumer Product Safety Commission	Kubota; U55-4A1, U55-4G1, U55-4GA1	No matching recall in the stated search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Kubota U55-4A1 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Kubota U55-4G1 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Kubota U55-4GA1 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Kubota U55-4W1 — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: The Farming Forum thread index for Kubota U55-4A1 to U55-4W1 — The Farming Forum. Observed 2026-09-25.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Kubota U55-4A1 to U55-4W1 — Heavy Equipment Forums. Observed 2026-09-24.
Federal agency data	Federal agency data: Recall database search for Kubota — U.S. Consumer Product Safety Commission. Observed 2026-09-24.

Kubota U55-4A1 to U55-4W1: Configuration records

U55-4A1

Specification	Source figure
Boom/Stick Option (Hex) 1
Max Vertical Wall Digging Depth	4.98 ft
Max Digging Depth	11.87 ft
Max.Dumping Height	13.19 ft
Max Digging Height	18.31 ft
Mximum Dig Radius	239.38 in
Dimensions and weight
Ground Clearance	1.02 ft
Tail Swing Radius	3.43 ft
Overall Height	8.37 ft
Overall Length	18.05 ft
Overall Width	77.17 in
Crawler Length	8.21 ft
Undercarriage
Shoe Size	15.75 in
Engine
Number Of Cylinders	4
Engine Make	Kubota
Gross Power	49.5 hp
Net Power	45.1 hp
Power Measured @	2,200 rpm
Model Name	U55-4A1
Operational
Fuel Capacity	18 gal
Hydraulic System Fluid Capacity	20.9 gal
Hydraulic Pump Flow Capacity	11.9 gpm
Auxiliary Hydraulic Flow	19.9 gpm
Travel Speed, Low Range	2 mph
Travel Speed, High Range	3.1 mph
Auxiliary Fuel Tank	9.8 gal
Swing Mechanism
Swing Speed	8.9 rpm
Blade
Maximum Drop Below Ground	1.4 ft
Blade Lift Height	17.4 in
Boom
Boom Swing Left	75 degrees
Boom Swing Right	55 degrees
Additional specifications
Engine Model	V2607-CR-E4

Source

U55-4G1

Specification	Source figure
Boom/Stick Option (Hex) 1
Max Vertical Wall Digging Depth	4.98 ft
Max Digging Depth	11.87 ft
Max.Dumping Height	13.19 ft
Max Digging Height	18.31 ft
Mximum Dig Radius	239.38 in
Dimensions and weight
Ground Clearance	1.02 ft
Tail Swing Radius	3.43 ft
Overall Height	8.37 ft
Overall Length	18.05 ft
Overall Width	77.17 in
Crawler Length	8.21 ft
Undercarriage
Shoe Size	15.75 in
Engine
Number Of Cylinders	4
Engine Make	Kubota
Gross Power	49.5 hp
Net Power	45.1 hp
Power Measured @	2,200 rpm
Model Name	U55-4 (1)
Operational
Fuel Capacity	18 gal
Hydraulic System Fluid Capacity	20.9 gal
Hydraulic Pump Flow Capacity	11.9 gpm
Auxiliary Hydraulic Flow	19.9 gpm
Travel Speed, Low Range	2 mph
Travel Speed, High Range	3.1 mph
Auxiliary Fuel Tank	9.8 gal
Swing Mechanism
Swing Speed	8.9 rpm
Blade
Maximum Drop Below Ground	1.4 ft
Blade Lift Height	17.4 in
Boom
Boom Swing Left	75 degrees
Boom Swing Right	55 degrees
Additional specifications
Engine Model	V2607-CR-E4

Source

U55-4GA1

Specification	Source figure
Boom/Stick Option (Hex) 1
Max Vertical Wall Digging Depth	4.98 ft
Max Digging Depth	11.87 ft
Max.Dumping Height	13.19 ft
Max Digging Height	18.31 ft
Mximum Dig Radius	239.38 in
Dimensions and weight
Ground Clearance	1.02 ft
Tail Swing Radius	3.43 ft
Overall Height	8.37 ft
Overall Length	18.05 ft
Overall Width	77.17 in
Crawler Length	8.21 ft
Undercarriage
Shoe Size	15.75 in
Engine
Number Of Cylinders	4
Engine Make	Kubota
Gross Power	49.5 hp
Net Power	45.1 hp
Power Measured @	2,200 rpm
Model Name	U55-4GA1
Operational
Fuel Capacity	18 gal
Hydraulic System Fluid Capacity	20.9 gal
Hydraulic Pump Flow Capacity	11.9 gpm
Auxiliary Hydraulic Flow	19.9 gpm
Travel Speed, Low Range	2 mph
Travel Speed, High Range	3.1 mph
Auxiliary Fuel Tank	9.8 gal
Swing Mechanism
Swing Speed	8.9 rpm
Blade
Maximum Drop Below Ground	1.4 ft
Blade Lift Height	17.4 in
Boom
Boom Swing Left	75 degrees
Boom Swing Right	55 degrees
Additional specifications
Engine Model	V2607-CR-E4

Source

U55-4W1

Specification	Source figure
Boom/Stick Option (Hex) 1
Max Vertical Wall Digging Depth	4.98 ft
Max Digging Depth	11.87 ft
Max.Dumping Height	13.19 ft
Max Digging Height	18.31 ft
Mximum Dig Radius	239.38 in
Dimensions and weight
Ground Clearance	1.02 ft
Tail Swing Radius	3.43 ft
Overall Height	8.37 ft
Overall Length	18.05 ft
Overall Width	77.17 in
Crawler Length	8.21 ft
Undercarriage
Shoe Size	15.75 in
Engine
Number Of Cylinders	4
Engine Make	Kubota
Gross Power	49.5 hp
Net Power	45.1 hp
Power Measured @	2,200 rpm
Model Name	U55-4W1
Operational
Fuel Capacity	18 gal
Hydraulic System Fluid Capacity	20.9 gal
Hydraulic Pump Flow Capacity	11.9 gpm
Auxiliary Hydraulic Flow	19.9 gpm
Travel Speed, Low Range	2 mph
Travel Speed, High Range	3.1 mph
Auxiliary Fuel Tank	9.8 gal
Swing Mechanism
Swing Speed	8.9 rpm
Blade
Maximum Drop Below Ground	1.4 ft
Blade Lift Height	17.4 in
Boom
Boom Swing Left	75 degrees
Boom Swing Right	55 degrees
Additional specifications
Engine Model	V2607-CR-E4

Source

Compare Kubota U55-4A1, U55-4G1, U55-4GA1, U55-4W1

Boom/Stick Option (Hex) 1
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Max Vertical Wall Digging Depth	4.98 ft	4.98 ft	4.98 ft	4.98 ft
Max Digging Depth	11.87 ft	11.87 ft	11.87 ft	11.87 ft
Mximum Dig Radius	239.38 in	239.38 in	239.38 in	239.38 in
Max Digging Height	18.31 ft	18.31 ft	18.31 ft	18.31 ft
Max.Dumping Height	13.19 ft	13.19 ft	13.19 ft	13.19 ft

Dimensions and weight
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Ground Clearance	1.02 ft	1.02 ft	1.02 ft	1.02 ft
Tail Swing Radius	3.43 ft	3.43 ft	3.43 ft	3.43 ft
Overall Height	8.37 ft	8.37 ft	8.37 ft	8.37 ft
Overall Length	18.05 ft	18.05 ft	18.05 ft	18.05 ft
Overall Width	77.17 in	77.17 in	77.17 in	77.17 in
Crawler Length	8.21 ft	8.21 ft	8.21 ft	8.21 ft

Undercarriage
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Shoe Size	15.75 in	15.75 in	15.75 in	15.75 in

Engine
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Number Of Cylinders	4	4	4	4
Engine Make	Kubota	Kubota	Kubota	Kubota
Engine Model	V2607-CR-E4	V2607-CR-E4	V2607-CR-E4	V2607-CR-E4
Gross Power	49.5 hp	49.5 hp	49.5 hp	49.5 hp
Net Power	45.1 hp	45.1 hp	45.1 hp	45.1 hp
Power Measured @	2,200 rpm	2,200 rpm	2,200 rpm	2,200 rpm
Model Name	U55-4A1	U55-4 (1)	U55-4GA1	U55-4W1

Operational
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Auxiliary Hydraulic Flow	19.9 gpm	19.9 gpm	19.9 gpm	19.9 gpm
Travel Speed, Low Range	2 mph	2 mph	2 mph	2 mph
Travel Speed, High Range	3.1 mph	3.1 mph	3.1 mph	3.1 mph
Auxiliary Fuel Tank	9.8 gal	9.8 gal	9.8 gal	9.8 gal
Fuel Capacity	18 gal	18 gal	18 gal	18 gal
Hydraulic System Fluid Capacity	20.9 gal	20.9 gal	20.9 gal	20.9 gal
Hydraulic Pump Flow Capacity	11.9 gpm	11.9 gpm	11.9 gpm	11.9 gpm

Swing Mechanism
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Swing Speed	8.9 rpm	8.9 rpm	8.9 rpm	8.9 rpm

Blade
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Maximum Drop Below Ground	1.4 ft	1.4 ft	1.4 ft	1.4 ft
Blade Lift Height	17.4 in	17.4 in	17.4 in	17.4 in

Boom
Specification	U55-4A1	U55-4G1	U55-4GA1	U55-4W1
Boom Swing Left	75 degrees	75 degrees	75 degrees	75 degrees
Boom Swing Right	55 degrees	55 degrees	55 degrees	55 degrees

More in Kubota: KX161-3, KX121-3/U45, U27-4.

Kubota U55-4A1 to U55-4W1 specifications

Kubota U55-4A1 to U55-4W1: Variants

Kubota U55-4A1 to U55-4W1: excavator

Sources for this page

Kubota U55-4A1 to U55-4W1: Configuration records