Kubota U55-4 Mini Excavator

Dimensions

Overall Length 216.5 in (5500 mm)
Overall Width 77.2 in (1960 mm)
Overall Height 100.4 in (2550 mm)
Length of Track on Ground 78.3 in (1990 mm)
Ground Clearance 12.2 in (310 mm)

Kubota U55-4 Mini Excavator Dimensions

Working Range

A. Max Digging Height 219.7 in (5580 mm)
B. Max Dumping Height 158.3 in (4020 mm)
C. Max Digging Depth 142.3 in (3615 mm)
D. Max Vertical Digging Depth 59.6 in (1515 mm)
E. Max Digging Radius at Ground 234.1 in (5945 mm)
F. Max Digging Radius 239.4 in (6080 mm)
G. Min Turning Radius (w/o swing) 96.8 in (2460 mm)
G. Min Turning Radius (w/ swing) 81.9 in (2080 mm)
H. Min Tail Turning Radius 41.1 in (1045 mm)

Kubota U55-4 Mini Excavator Working Range

Lift Capacity Over-Front

Lift Point Radius
Lift Point Height 12 ft 16 ft Max
10 ft 2620 lb (1188 kg)
8 ft 2920 lb (1324 kg) 2510 lb (1138 kg) 2330 lb (1057 kg)
4 ft 3700 lb (1678 kg) 2700 lb (1224 kg) 2470 lb (1120 kg)
Ground Level 4070 lb (1846 kg) 2750 lb (1247 kg) 2570 lb (1165 kg)

Lift capacity over-front dozer blade down: Kubota U55-4 with ROPS canopy + rubber crawler, without bucket.

Kubota U55-4 Mini Excavator Lift Capacity

Lift Capacity Over-Side

Lift Point Radius
Lift Point Height 12 ft 16 ft Max
10 ft 2070 lb (939 kg)
8 ft 2010 lb (911 kg) 1270 lb (576 kg) 1190 lb (540 kg)
2 ft 1850 lb (839 kg) 1220 lb (553 kg) 1090 lb (494 kg)
Ground Level 1740 lb (789 kg) 1180 lb (535 kg) 1110 lb (503 kg)

Kubota U55-4 Mini Excavator Weight

Weight

Blade Type Standard Blade U55-4 with Angle Blade
Operating Weight, Rubber Tracks, Canopy / Cab 11915 lb (5405 kg) / 12115 lb (5495 kg) 12335 lb (5595 kg) / 12535 lb (5685 kg)
Operating Weight, Steel Tracks, Canopy / Cab 12555 lb (5695 kg) / 12755 lb (5785 kg)
Ground Pressure, Rubber Tracks, Canopy / Cab 4.42 psi (30.5 kPa) / 4.51 psi (31.1 kPa) 4.58 psi (31.6 kPa) / 4.65 psi (32.1 kPa)
Ground Pressure, Steel Tracks, Canopy / Cab 4.66 psi (32.1 kPa) / 4.74 psi (32.7 kPa)

Kubota U55-4 Mini Excavator Swing Mechanism Specs

Swing Mechanism

Type Tight tail swing compact excavator
Swing Speed 9.3 rpm
Boom Swing Angle, Left 70°
Boom Swing Angle, Right 55°
Tail Swing Radius 41.1 in (1045 mm)
Swivel Brake Swivel motor with disc brake

Kubota U55-4 Mini Excavator Specs

Undercarriage

Type of Tracks Rubber tracks
Type of Tracks (Optional) Steel tracks
Type of Track Rollers Double-flange track rollers
Number of Track Rollers per Side 5
Number of Carrier Rollers per Side 1
Shoe Width 15.7 in (400 mm)
Undercarriage Width 77.2 in (1960 mm)
Crawler Length 98.4 in (2500 mm)
Tumbler Distance 78.3 in (1990 mm)
Max Climbing Angle 20° (36%)
Angle in Case of Crossing Slope 15° (27%)
Max Traction Force 14480 lbf (64.4 kN)

Kubota U55-4 Mini Excavator Blade Specs

Dozer Blade

Kubota U55-4 Standard Blade Angle Blade
Blade Width 77.2 in (1960 mm) 77.2 in (1960 mm)
Blade Height 16.1 in (410 mm) 16.7 in (425 mm)
Max Blade Lift Height 17.3 in (440 mm) 20.1 in (510 mm)
Max Blade Dig Depth 16.1 in (410 mm) 18.3 in (465 mm)
Angle, Left / Right ±25°

Engine Details

Number of Cylinders 4
Engine Make Kubota
Engine Model Kubota V2607-CR-E4
Displacement 159.6 cu in (2.615 L)
Bore 3.43 in (87.0 mm)
Stroke 4.33 in (110 mm)
Gross Power 47.6 hp (35.5 kw)
Net Power 45.2 hp (33.7 kw)
Power Measured @ 2200 rpm
Low Idle Speed 1100 rpm
Fuel System Common rail system
Combustion System Direct Injection
Air Cleaner Double-element air filter
Aspiration Naturally aspirated
Aftertreatment EGR + DPF
Emission Standards US EPA Tier 4

Kubota U55-4 Mini Excavator Cab Interior

Electrical System

Operating Voltage 12 V
Alternator 60 amps
Battery 12 V, 95 Ah, CCA 830, 115D31L
Starter 12 V, 8 teeth, 2.68 hp (2.0 kw), OSGR
Power Source 12 V

Kubota U55-4 Mini Excavator Operator Seat

Operator Environment

Operator Station (Standard) ROPS / OPG (TOP Guard, Level Ⅰ) Canopy
Operator Station (Optional) ROPS / OPG Cab with A/C
Operator Seat Weight-adjustable high back full suspension seat
Seat Belt Retractable seat belt
Instrument Panel Digital Panel with Kubota’s Intelligent Control System (hour meter, coolant temperature, clock, fuel level, engine RPM, service mode, warning mode, max oil flow setting, etc)
Operation History Record Operation history is automatically recorded on the Kubota U55-4 (up to 90 days)
Working Lights (Standard) 1x light on the boom
Working Lights (Optional) 2x working lights on cab / canopy + 1x light on the boom
Controls Hydraulic pilot control levers with wrist rests
Operating Patterns Convenient Two-pattern Selection System (TPSS) – change between ISO and SAE operating patterns
Noise Level, LpA 78 dB(A)
Noise Level, LwA 96 dB(A)
Hand-Arm System Vibration <2.5 m/s2
Whole Body Vibration <0.5 m/s2

Drive System

Type 2-speed hydrostatic transmission, auto-shift
Max Travel Speed, Low 1.8 mph (2.8 km/h)
Max Travel Speed, High 3.1 mph (4.9 km/h)
Service Brakes Travel motor with disc brake
Parking Brake The travel negative brake locks the tracks to prevent inadvertent movement of the excavator

Kubota U55-4 Mini Excavator Hydraulic Specs

Hydraulic System

Pump Type 2x variable displacement pumps + 1x gear pump
Main Pump Flow 2x 14.8 gal/min (2x 56.1 L/min) + 9.8 gal/min (37.0 L/min)
AUX1 Pump Flow 19.8 gal/min (75 L/min)
AUX1 Max Pressure 2988 psi (20600 kPa)
AUX2 Pump Flow 9.8 gal/min (37 L/min)
AUX2 Max Pressure 2770 psi (19100 kPa)
Breakout Force, Bucket 11177 lbf (49.7 kN)
Breakout Force, Arm 6261 lbf (27.8 kN)

Kubota U55-4 Trenching Buckets

Type and Width Heaped Capacity Weight Teeth
12 in (305 mm) 2.6 ft3 (0.074 m3) 210 lb (95 kg) 3
16 in (406 mm) 3.8 ft3 (0.108 m3) 265 lb (120 kg) 4
18 in (457 mm) 4.4 ft3 (0.125 m3) 305 lb (138 kg) 4
24 in (610 mm) 6.3 ft3 (0.178 m3) 346 lb (157 kg) 5
30 in (762 mm) 8.2 ft3 (0.232 m3) 395 lb (179 kg) 6
36 in (914 mm) 8.2 ft3 (0.232 m3) 410 lb (186 kg) 7
15 in (381 mm), Reversible 3.28 ft3 (0.093 m3) 270.9 lb (123 kg) 3
24 in (610 mm), Reversible 6.08 ft3 (0.172 m3) 297.2 lb (135 kg) 5
30 in (762 mm), Reversible 8.07 ft3 (0.228 m3) 329.9 lb (150 kg) 5

Kubota U55-4 Ditching Buckets

Type and Width Heaped Capacity Weight
36 in (914 mm) 7.8 ft3 (0.221 m3) 270 lb (122 kg)
48 in (1219 mm) 8.7 ft3 (0.246 m3) 350 lb (159 kg)
42 in (1067 mm) 7.9 ft3 (0.224 m3) 335 lb (152 kg)
42 in (1067 mm) 7.9 ft3 (0.224 m3) 600 lb (272 kg)
42 in (1067 mm), Reversible 12.06 ft3 (0.341 m3) 359.6 lb (163 kg)
48 in (1219 mm), Reversible 14 ft3 (0.396 m3) 392.9 lb (178 kg)
48 in (1219 mm), Tilting, ±45° Pivot Angle 9.45 ft3 (0.267 m3) 615 lb (279 kg)

Kubota U55-4 Service Refill Capacities

Service Refill Capacities

Fuel Tank Capacity 20 gal (75 L)
Engine Oil Capacity (w/ filter) 2.38 gal (9 L)
Cooling System Capacity (Canopy) 2.0 gal (7.8 L)
Cooling System Capacity (Cab) 2.1 gal (8.1 L)
Hydraulic System Capacity (w/ tank) 20.9 gal (79 L)
Hydraulic Tank Capacity 11.9 gal (45 L)
Drive Unit Fluid Capacity (each) 0.1 gal (0.33 L)

Kubota U55-4 Filters

Engine Oil Filter (Every 500 hours) HH1C0-32430
Breather Filter RD411-62150
Fuel Filter (Every 500 hours) HHV00-51920
Fuel/Water Separator (Every 1500 hours) RD159-51940
Fuel Filler Neck Filter 11151-41350
Hydraulic Oil Filter, Return (Every 1000 hours) RD451-62120
Hydraulic Oil Filter, Suction (Every 1000 hours) RD451-62210
Hydraulic Oil Filter R1411-64930
Air Filter (Inner) R2401-42280
Air Filter (Outer) R1401-42270
Cab A/C Air Filter 6A671-75090
Alternator Belt 1G772-97010
Fan V Belt (Every 200 hours) 1J731-97010 / RD451-53790
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