KX057-4 Kubota excavator specs & dimensions (2009 - 2026)

Powerful & Versatile
The Kubota KX057-4 combines power for demanding tasks and versatility to work in any condition is ready to take on any challenge. This advanced 5.5-ton machine is the most powerful excavator of our miniseries. It was designed with excellent stability to work with a variety of attachments. Versatility is greatly enhanced by two auxiliary circuits as standard and precise oil flow control. With upgraded digging and lifting force, smoother travel performances and increased versatility, this Kubota has really everything.
Enhanced Digging Force
The KX057-4 delivers an impressive bucket digging force of 4,315 kgf. Its powerful and well-balanced arm and bucket allow the operator to dig faster and more efficiently, even in the toughest conditions.

Kubota Original Anti-theft System
Your KX057-4 is protected by Kubota's industry leading anti-theft system. Only programmed buttons enable the engine to start up. Attempting to start with an unprogrammed key activates the alarm. Newly enhanced features include a warning to the operator to filter out the key after operation and an LED alert to prevent possible theft.
Kubota Original Direct Injection Engine
The KX057-4 is powered by Kubota's impressive 46 hp direct injection engine. Designed with the power to maximize digging and lifting performance, it also delivers minimized noise and vibration.
Auto-shift
The Auto-Shift system enables automatic travel shift from high to low depending on traction force and terrain. This achieves smoother operations when dozing and turning.

Convenient thumb-operated switches allow the operator easy
Proportional flow control of SP1 and SP2. SP2 is standard for types L and,
C. Constant Oil Flow Switch
An on/off forefinger switch allows easy operation of special applications requiring constant oil flow.
Load Sensing Hydraulic System
Kubota's improved 3-pump load sensing hydraulic system ensures smoother operation, regardless of the load size. It allows flow of the hydraulic oil according to the specific area of lever movement of the operator.
3. Versatile Control
Two auxiliary circuits (SP1 and SP2) are available as standard on the KX057-4. The maximum oil flow settings of both circuits are conveniently adjustable from the digital panel no additional tools or elaborate manual adjustment operations required. You can even program up to five oil flow rates according to specific attachments into memory on the digital panel. Programmed settings can be accessed quickly for the next task. The system is delivered with nine preinstalled attachment symbols. For Types L and,
Engine/Fuel system Undercarriage Hydraulic system
Side/rear mirrors (left, right and rear), cup holder, double-element air filter, electric fuel pump, auto idling system, tank electrical refueling pump (type L and, water separator with drain cock, 400 mm rubber track, 1 x upper roller, 5 double-floating track rollers on each track, 2-speed travel switch on dozer lever, two-speed travel with automatic changeover, pressure accumulator, hydraulic pressure test ports, straight travel circuit, hydraulic return of third line, load-sensing hydraulic system, adjustable maximum oil flow to auxiliary circuits (SP1 and SP2) For types L and, dual additional circuits for accessories, auxiliary switches (SP1) on the right control lever, Auxiliary Switch (SP2) on left control lever (Type L and,

2. Optimised site cleaning
The dozer blade is up to 410 mm high and the distance between Blade and bucket edge optimized. This allows easier site cleaning and leveling.
Optional Equipment Undercarriage Safety system Others
400 mm steel track (+ 100 kg), 550 mm steel track (+ 300 kg), drain valve unit (arm and dozer), bracket and belt for beacon, special paint on request.

Spacious & Comfortable
The KX057-4 truly puts your comfort first. The luxurious cab has a wider entrance, generous legroom and deluxe seat. The Rollover Protective Structure (ROPS) and Operator Protective Guard (OPG, ISO10262) maximize safety. Operativeness is greatly enhanced by more user-friendly features than ever before.
3. Air Conditioning
The entire air circulation in the cab has been improved, thanks to a stronger cooling/heating unit and positioning of six vents around the operator for better all-round comfort. A/C is standard for type
Boom Anti-drop Valve
The KX057-4 is equipped with a boom lowering control device (ISO8643) as standard.
Standard Equipment Safety system Working equipment
Engine start safety system on the left console, travel engine with disc brake, swing motor with disc brake, overload warning buzzer, Kubota original anti-theft system, dumping valve on boom (ISO8643), All hydraulic controls, auxiliary hydraulic circuits (SP1 and SP2) piping to the arm end For types L and, 2 working lights on cab and 1 light on boom, 1820 mm arm, ROPS (Rollover Protective Structure, ISO3471), OPG (Operator Protection) Level1, weight adjustable full suspension seat, seat belt, Hydraulic pilot control levers with wrist rests, travel lever equipped with foot pedals, air conditioning (type, cabin heater for defrosting and demisting, emergency exit hammer, front window power transported with throttle damper, 12V power source, 2 speakers and radio antenna, location for radio.