Horsepower 97.2 HP @ 2,050 rpm
Operating weight 34,563 - 37,547 lbs.
Bucket capacity 0.34 - 1.00 yd³
Stability and power for tight spaces
Built for working in tight spaces like roadways, bridges or urban areas, this tight tail swing radius excavator is designed for exceptional stability, with responsive quick arm speed and a purpose-built cab for operator comfort.

Quick and powerful Impressive fuel efficiency Spacious and comfortable Designed for exceptional stability

Features and benefits
Short implement swing radius
Get greater clearance when space is limited with a higher boom raise angle than our standard excavator that reduces the minimum front implement swing radius.

Short tail swing radius
Get more done in confined areas with the short tail swing radius that allows the machine to work in more spaces than our conventional excavator.

Rounded cab design with sliding door
High maneuverability is achieved through the purpose-built cabs that swings within the same radius as the counterweight. The sliding cab door allows operators to easily enter and exit when space is limited.

Stable platform
The compact counterweights provide exceptional lifting capability and stability providing a comfortable, confident operating experience.

Arm quick return valve
Help improve efficiency with the quick return valve that directs additional oil through a second line directly back to the tank when the arm is extended, helping to reduce back pressure and fuel consumption.

Efficient hydraulic system
For quick response to operator demands, the closed-center loading system (CLSS) helps improve fuel efficiency. Pilot proportional control (PPC) hydraulics and optional proportional joysticks provide exceptional control.

Specifications for PC138USLC-11
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US system
Model Komatsu SAA4D95LE-7* Type Water-cooled, 4-cycle, direct injection Aspiration Variable flow, turbocharged, air-to-air aftercooled Number of cylinders 4 Bore 3.74 in Stroke 4.53 in Piston displacement 199 in³ Horsepower: SAE J1995 / Gross 97.3 HP ISO 9249 / SAE J1349 / Net 97.2 HP Rated rpm 2,050 Fan at maximum speed /Net 90.9 HP Fan drive method for radiator cooling Mechanical with viscous clutch Governor All-speed control, electronic *EPA Tier 4 Final emissions certified

Type: HydrauMind (Hydraulic Mechanical Intelligence) system, closed-center system with load sensing valve and pressure compensated valve

Number of selectable working modes 6
Main pump: Type Variable capacity piston type Pumps for Boom, arm, bucket, swing, and travel circuits Maximum flow 64 US gpm Hydraulic motors: Travel 2 x piston motor with parking brake Swing 1 x piston motor with swing holding brake Relief valve setting: Implement circuits 5,050 psi Travel circuit 5,050 psi Swing circuits 4,240 psi Pilot circuit 470 psi Maximum Auxiliary Flow at 3,553 psi* 64 US gpm Hydraulic cylinders / Number of cylinders: bore x stroke x rod diameter Boom / 2 4.1 x 41.5 x 2.76 in Arm / 1 4.3 x 46.3 x 2.95 in Bucket / 1 3.7 x 34.8 x 2.56 in * Auxiliary flow is adjustable through the monitor.

Drives and Brakes
Steering control Two levers with pedals Drive method Fully hydrostatic Maximum drawbar pull 27,560 lbf. Gradeability 70%, 35° Maximum travel speed: High 3.2 mph Low 1.8 mph Service brake Hydraulic lock Parking brake Wet, multiple-disc Swing System Driven by Hydraulic motor Swing reduction Planetary gear Swing circle lubrication Grease-bathed Swing lock Wet, multiple-disc brake Swing speed 11.0 rpm Swing torque 21,627 ft.-lbs. Undercarriage Center frame X-leg frame Track frame Box-section Track type Sealed track Track adjuster Hydraulic Number of shoes 46 each side Number of carrier rollers 2 each side Number of track rollers 8 each side Sound Performance Exterior ISO 6395 101 dB(A) Operator ISO 6396 71 dB(A) Coolant & Lubricant Capacity (Refilling) Fuel tank 52.8 US gal Coolant 4.6 US gal Engine 3.0 US gal Final drive, each side 0.55 US gal Swing drive 0.7 US gal Hydraulic tank 18.2 US gal DEF tank 3.3 US gal Operating Weight (Approximate) Operating weight includes 15 ft. 1 in one-piece boom, 8 ft. 2 in arm, SAE heaped 0.67 yd3 backhoe bucket, rated capacity of lubricants, coolant, full fuel tank, operator, and standard equipment.

Triple-Grouser Operating Weight Ground Pressure
20 in 34,563 lbs. 6.57 psi 24 in 35,673 lbs. 5.49 psi 28 in 35,114 lbs. 4.77 psi

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