Kubota KX040-4 is a compact mini excavator designed for digging, trenching, grading, and utility work in confined jobsite conditions. It is commonly used in construction, landscaping, municipal maintenance, and light demolition applications. The KX040-4 features a zero-tail swing design, hydraulic control system, and a cab or canopy configuration depending on specification. Typical attachments include buckets, hydraulic thumbs, augers, and breakers. As a 4-ton class machine, it is valued for maneuverability, transportability, and versatility on small to medium projects. The Kubota KX040-4 is part of Kubota's mini excavator lineup for general-purpose earthmoving tasks.
General Specifications
Kubota KX040-4 Mini Excavator General Specifications specifications
Digging Depth
11.30 ft (3.44 m) - Starting 2025
Digging Reach
17.10 ft (5.21 m) - Starting 2025
Engine
40.90 hp (30.50 kw) - Starting 2025
Operating Weight
9,195.00 lbs (4,170.79 kg) - Starting 2025
Blade
Kubota KX040-4 Mini Excavator Blade specifications
Angle Blade Height
15.20 in (38.61 cm)
Angle Blade Swing Angle
25 degrees
Angle Blade Width
67.00 in (170.18 cm)
Height
13.80 in (35.05 cm)
Maximum Drop Below Ground
1.40 ft (0.43 m)
Maximum Lift Above Ground
1.40 ft (0.43 m)
Width
5.60 ft (1.71 m)
Boom/Stick 1
Kubota KX040-4 Mini Excavator Boom/Stick 1 specifications
Max Digging Depth
11.23 ft (3.42 m)
Max Digging Height
17.51 ft (5.34 m)
Max Vertical Wall Digging Depth
7.40 ft (2.26 m)
Max. Breakout Force Bucket
9,535.00 lbs (4,325.01 kg)
Max. Breakoutarm
4,112.00 lbs (1,865.17 kg)
Max.Dumping Height
12.77 ft (3.89 m)
Mximum Dig Radius
213.00 in (541.02 cm)
Brakes
Kubota KX040-4 Mini Excavator Brakes specifications
Parking Brake
Auto travel, house swivel
Dimensions
Kubota KX040-4 Mini Excavator Dimensions specifications
Ground Clearance
1.09 ft (0.33 m)
Height
97.84 in (248.51 cm)
Height To Top Of Cab
8.16 ft (2.49 m)
Length Of Track On Ground
16.69 ft (5.09 m)
Shoe Width
1.15 ft (0.35 m)
Tail Swing Radius
4.27 ft (1.30 m)
Width
5.58 ft (1.70 m)
Drive System
Kubota KX040-4 Mini Excavator Drive System specifications
Max. Traction Force-Low Speed
9,747.00 lbs (4,421.17 kg)
Electrical
Kubota KX040-4 Mini Excavator Electrical specifications
Battery Capacity
52 AH
Battery Voltage
12 VDC
Engine Shut-Off
Key
Instrument Panel
Digital
Lighting
Front working
Engine
Kubota KX040-4 Mini Excavator Engine specifications
Air Filter Type
Dual element, cyclonic
Aspiration
Turbo
Cooling Method
Liquid
Displacement
111.40 cu in (1,825.52 cu cm)
Engine Make
Kubota
Engine Model
D1803-CR-TE4
Engine Type
Water cooled
Epa
Tier 4
Fuel Type
Diesel
Gross Power
40.40 hp (30.13 kw)
Injection
Direct
Model Name
KX040-4
Net Power
38.90 hp (29.01 kw)
Number Of Cylinders
3
Oil Filtration
Spin-on type
Power Measured @
2200 rpm
Radiator Core Type
Low noise, F shaped blades
Operational
Kubota KX040-4 Mini Excavator Operational specifications
Fuel Capacity
17.00 gal (64.35 l)
Ground Pressure
4.5 psi
Hydraulic Pump Flow Capacity
6.50 gpm (24.60 lpm)
Hydraulic System Fluid Capacity
17.20 gal (65.10 l)
Operating Weight
9,480.00 lbs (4,300.06 kg)
Operating Weight Cabin
9,326.00 lbs (4,230.21 kg)
Swing Mechanism
Kubota KX040-4 Mini Excavator Swing Mechanism specifications
Swing Speed
9.2 rpm
Undercarriage
Kubota KX040-4 Mini Excavator Undercarriage specifications
Ground Pressure
4.37 psi
Max Travel Speed
3.10 mph (4.99 kph)
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