Contents
Dimensions
| Overall Length | 215.6 in (5475 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) |
The dimensions are based on the Kubota U55-5 with quick attach coupler (K7915A) and quick attach 24″ bucket (K7919A).
Working Range
| A. Max Digging Height | 221.8 in (5635 mm) |
| B. Max Dumping Height | 157.5 in (4000 mm) |
| C. Max Digging Depth | 142.9 in (3630 mm) |
| D. Max Vertical Digging Depth | 59.6 in (1515 mm) |
| E. Max Digging Radius at Ground | 234.8 in (5965 mm) |
| F. Max Digging Radius | 240.4 in (6105 mm) |
| G. Min Turning Radius (w/o swing) | 96.8 in (2460 mm) |
| G. Min Turning Radius (w/ swing) | 79.5 in (2020 mm) |
| H. Min Tail Turning Radius | 41.9 in (1065 mm) |
Lift Capacity Over-Front
| Lift Point Radius | |||
|---|---|---|---|
| Lift Point Height | 12 ft | 16 ft | Max |
| 10 ft | 2520 lb (1143 kg) | – | – |
| 8 ft | 2810 lb (1274 kg) | 2450 lb (1111 kg) | 2220 lb (1007 kg) |
| 4 ft | 3570 lb (1619 kg) | 2630 lb (1193 kg) | 2340 lb (1061 kg) |
| Ground Level | 3980 lb (1805 kg) | 2680 lb (1215 kg) | 2500 lb (1134 kg) |
Lift capacity over-front dozer blade down: Kubota U55-5 with ROPS canopy + rubber crawler, without bucket.
Lift Capacity Over-Side
| Lift Point Radius | |||
|---|---|---|---|
| Lift Point Height | 12 ft | 16 ft | Max |
| 10 ft | 2130 lb (966 kg) | – | – |
| 8 ft | 2070 lb (939 kg) | 1320 lb (599 kg) | 1230 lb (558 kg) |
| 2 ft | 1920 lb (871 kg) | 1270 lb (576 kg) | 1130 lb (512 kg) |
| Ground Level | 1820 lb (825 kg) | 1230 lb (558 kg) | 1160 lb (526 kg) |
Weight
| Blade Type | Standard Blade | U55-5 with Angle Blade |
|---|---|---|
| Operating Weight, Rubber Tracks, Canopy / Cab | 12247 lb (5555 kg) / 12456 lb (5650 kg) | 12721 lb (5770 kg) / 12930 lb (5865 kg) |
| Operating Weight, Steel Tracks, Canopy / Cab | 12533 lb (5685 kg) / 12743 lb (5780 kg) | 13007 lb (5900 kg) / 13217 lb (5995 kg) |
| Ground Pressure, Rubber Tracks, Canopy / Cab | 4.6 psi (31.4 kPa) / 4.6 psi (31.7 kPa) | 4.7 psi (32.4 kPa) / 4.8 psi (33.3 kPa) |
| Ground Pressure, Steel Tracks, Canopy / Cab | 4.7 psi (32.4 kPa) / 4.7 psi (32.4 kPa) | 4.8 psi (33.3 kPa) / 4.9 psi (33.8 kPa) |
Swing Mechanism
| Type | Tight tail swing compact excavator |
| Swing Speed | 9.2 rpm |
| Boom Swing Angle, Left | 70° |
| Boom Swing Angle, Right | 55° |
| Tail Swing Radius | 41.9 in (1065 mm) |
| Swivel Brake | Swivel motor with disc brake |
Kubota U55-5 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 U55-5 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) |
Undercarriage
| Shoe Width | 15.7 in (400 mm) |
| 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 |
| 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) |
Dozer Blade
| Kubota U55-5 | 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 | 15.9 in (405 mm) | 18.3 in (465 mm) |
| Angle, Left / Right | ±25° |
Engine Details
| Number of Cylinders | 4 |
| Engine Make | Kubota |
| Engine Model | Kubota V2607-CR-E5 (BH1 / BH2) |
| 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 (V2607-CR-E5 BH1) | 46.4 hp (34.6 kw) |
| Net Power (V2607-CR-E5 BH2) | 45.5 hp (33.9 kw) |
| Power Measured @ | 2200 rpm |
| Peak Torque | 128.4 lb ft (174.1 Nm) |
| Torque Measured @ | 1600 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 | DOC + DPF |
| Emission Standards | US EPA Tier 4 + EU Stage V |
Electrical System
| Operating Voltage | 12 V |
| Alternator | 60 amps (1J731-64010 / 1J730-64013) |
| Battery | 12 V, 72 Ah, CCA 710, RC: 160 min, GP27 (115D31L) |
| Starter | 12 V, 8 teeth, 2.68 hp (2.0 kw), OSGR (1J730-63010) |
| Power Source | 12 V |
Operator Environment
| Operator Station (Standard) | ROPS / OPG (FOPS) Canopy |
| Operator Station (Optional) | ROPS / OPG (FOPS) Cab with A/C |
| Operator Seat | Weight-adjustable high back full suspension seat |
| Seat Belt | Retractable seat belt |
| Instrument Panel | 7″ Full-Color LCD Screen With Jog Dial (Alert Indicator, Hydraulic Temperature, AUX Mode, Water Temperature, Fuel Level) |
| Operation History Record | Operation history is automatically recorded on the Kubota U55-5 (last 3 months) |
| Working Lights | 2x LED working lights on canopy / cab + 1x LED light on the boom |
| Controls | Hydraulic pilot control levers with wrist rests + travel levers with foot pedals |
| Operating Patterns | Two-pattern Selection System (TPSS) – change between ISO and SAE operating patterns |
| Noise Level, LpA (cab) | 74 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 |
Hydraulic System
| Pump Type (P1, P2, P3) | 2x variable displacement pumps + 1x gear pump |
| Pump Flow (P1, P2) | 2x 14.8 gal/min (2x 56.1 L/min) |
| Hydraulic Pressure (P1, P2) | 3974 psi (27400 kPa) |
| Pump Flow (P3) | 9.8 gal/min (37.0 L/min) |
| Hydraulic Pressure (P3) | 2770 psi (19100 kPa) |
| Breakout Force, Bucket | 10172 lbf (45.2 kN) |
| Breakout Force, Arm | 5869 lbf (26.1 kN) |
| AUX1 Circuit Pump Flow | 19.8 gal/min (75 L/min) |
| AUX1 Circuit Pressure | 2988 psi (20600 kPa) |
| AUX2 Circuit Pump Flow | 9.8 gal/min (37 L/min) |
| AUX2 Circuit Pressure | 2770 psi (19100 kPa) |
Service Refill Capacities
| Fuel Tank Capacity | 17.4 gal (66 L) |
| Engine Oil Capacity (w/ filter) | 2.7 gal (10.2 L) |
| Cooling System Capacity (Canopy) | 1.4 gal (5.4 L) |
| Cooling System Capacity (Cab) | 1.6 gal (5.9 L) |
| Cooling System Recovery Tank | 0.29 gal (1.1 L) |
| Hydraulic System Capacity (w/ tank) | 20.3 gal (77 L) |
| Hydraulic Tank Capacity | 11.1 gal (42 L) |
| Drive Unit Fluid Capacity (each) | 0.2 gal (0.9 L) |
Kubota U55-5 Filters
| Engine Oil Filter (Every 500 hours) | HH1C0-32430 |
| Breather Filter | RD411-62150 |
| Fuel Filter (Every 500 hours) | HH1J0-43172 |
| Fuel/Water Separator (Every 1500 hours) | V0631-51880 |
| Fuel Filler Neck Filter | 11151-41350 |
| Hydraulic Oil Filter, Suction (Every 1000 hours) | RD451-62210 |
| Hydraulic Oil Filter, Return (Every 1000 hours) | RD451-62120 |
| Hydraulic Oil Filter | R1411-64930 |
| Air Filter (Outer) | R1401-42270 |
| Air Filter (Inner) | R2401-42280 |
| Cab A/C Air Filter | RD579-53730 |
| Alternator Belt | 1G772-97010 |
| Fan V Belt (Every 200 hours) | 1J731-97010 / RD451-53790 |
The Kubota U55-5 Mini Excavator is designed for maximum versatility, making it an ideal choice for construction, landscaping, utility work, and property maintenance. Its compact size, powerful performance, and advanced hydraulics allow operators to easily adapt the machine to a wide range of specialized tasks through a variety of high-performance attachments.
For drilling applications, the U55-5 pairs seamlessly with Kubota Excavator Augers, available in EA20 and EA35 models, delivering efficient and precise hole-digging capabilities for fencing, planting, or foundational work. When soil compaction is needed, Kubota Plate Compactors – PC400, PC700, and PC1000 – provide the power and reliability to achieve solid, stable surfaces in trenches or on job sites.
The U55-5 also tackles tough removal tasks with the Kubota Stump Grinder SSG2024, designed for fast and effective stump elimination. For breaking concrete, rock, or asphalt, Kubota hydraulic breakers and hammers – including the KXB310, KXB360, KXB460, KXB510, KXB560, and KXB860 – deliver the impact energy required for demanding demolition and excavation work. With this extensive attachment lineup, the Kubota U55-5 transforms from a compact excavator into a powerful multi-purpose machine capable of handling a wide range of applications with precision and efficiency.
