Komatsu PC55MR Mini Excavator | Japanese 5.5-Ton Compact Digger

The Komatsu PC55MR is a versatile 5.5-ton mini hydraulic excavator built for earthmoving, pipe trenching, foundation digging, and urban construction projects. Designed with a minimum radius (MR) tight-tail swing profile, it offers exceptional maneuverability when operating alongside walls, busy roadways, or within restricted job sites. Equipped with a fully enclosed operator cab, durable steel crawler tracks, auxiliary hydraulic piping, boom swing capability, and a heavy-duty dozer blade, the PC55MR delivers strong breakout force, operator protection, and multi-function hydraulics.

Key Specifications & Component Layout

• Machine Model: Komatsu PC55MR (Minimum Radius Series)

• Operating Weight Class: 5.5-Ton Class Mini Excavator

• Engine & Hydraulics: Direct-Injection Komatsu Water-Cooled Diesel Engine with Closed-center Load Sensing System (CLSS)

• Operator Station: Fully Enclosed All-Weather Cab with Tinted Safety Glass, Ergonomic Pilot Joysticks, Overhead Lighting, and Protective Frame Padding

• Undercarriage Setup: Heavy-Duty Steel Crawler Tracks, High Ground Clearance Frame, and Hydraulic Dozer Blade

• Work Attachments: Reinforced Boom and Arm, Auxiliary Hydraulic Lines, Boom Swing Joint, and Heavy-Duty Digging Bucket with Teeth

Operational Features & Advantages

• Tight Tail Swing Performance: Enables safe 360-degree rotation in narrow spaces without risk of rear counterweight collisions.

• Boom Swing Mechanism: Allows offset digging along building foundations and fences without repositioning the undercarriage tracks.

• Advanced Hydraulic Metering: CLSS hydraulic system provides smooth simultaneous control over swing, travel, and front attachment functions.

• Protected & Comfortable Cab: Fully sealed cabin environment shields the operator from dust and noise while offering excellent 360-degree perimeter visibility.

• Simplified Maintenance Access: Wide-opening side and rear engine hoods give direct access to the fuel filter, oil dipstick, air filter, and hydraulic valves for fast servicing.

Primary Application Scenarios

• Municipal Utilities & Trenching: Laying water, gas, and telecommunication pipes in narrow urban streets.

• Foundation & Site Prep: Digging footings, site clearing, and leveling ground for residential construction.

• Landscaping & Agricultural Works: Earthmoving, clearing drainage ditches, and handling stone or timber materials.