Komatsu PC50 MR-2

 
Features
Full Specs
Charts
Product Brochure

Features

  • Tradition and Innovation

    The new compact mini-excavator is the product of the competence and the technology that KOMATSU has been acquiring for over the past eighty years. The project has been developed with a constant attention to the needs of customers from all over the world; the result is a user-friendly machine, which offers top class performance.

  • Performance

    The new short tail PC50MR-2 supplies optimal power and digging speed in confined spaces: yards, road works, demolition works, sewers, wherever traditional machines cannot work. Sturdiness and excellent stability ensure safety and confidence in any condition.

  • Komatsu CLSS

    The CLSS (Closed Load Sensing System) hydraulic circuit guarantees power, speed and perfect control to all movements, including the combined ones. The main feature of this system is the connection between the variable displacement pump and the closed-centre circuit with load sensing, which allows operators to perform all movements with maximum efficiency, regardless of the load or the rpm. These characteristics are highlighted by the hydraulic servo-controls, which are by far the easiest to use and require minimum efforts to perform extremely precise manoeuvres.

  • Comfort

    Despite its compact size, the PC50MR-2 offers a comfort which has no equals: spacious cab, PPC proportional servo-controls for all movements, sliding door, gas spring assisted front window, storage drawer, hook, cup holder, courtesy lamp and, upon request, radio and air conditioning.

  • Versatility

    Many available configurations allow the operator to choose the right machine for the specific job: short or long arm, cab or canopy, rubber or steel shoes, extra counterweight. Moreover, the 1 / 2 way auxiliary hydraulic circuit consents to use multiple working tools, like the hammer, the clamshell bucket, the auger, etc.

  • Maintenance

    All periodic inspection points are easily accessible through the bonnets. The fuel and the hydraulic oil tanks are located under the side bonnet, in a safe and easy to reach position. In addition, extra-ordinary maintenance can be performed by simply tilting the cab upwards: under the floor, the operator can find all major hydraulic components, like the main valve or the swing motor.

  • ORFS hydraulic face seal connectors and DT electric connectors improve the reliability of the machine and make repairs easier and faster. Special technical solutions have allowed to extend up to 500 hours the intervals for most ordinary maintenance operations, such as pin greasing or engine oil replacement. Also, to avoid possible leakage, all tanks are equipped with a draining hose: this confirms once again the attention KOMATSU pays to the environment.
 
Full Specs
Engine
The new generation engine has been developed to comply with the strictest emission controls (STAGE 2). 
Model  Komatsu 4D88E-5 
Type  emissionised 4-cycle diesel engine 
Displacement  2 189 cm³ 
Bore × stroke  88 × 90 mm 
No. of cylinders 
Combustion  direct injection 
Aspiration  natural 
Max. power  35,4 kW / 47,5 HP @ 3 000 rpm 
Net power (SAE J1349)  29,4 kW / 39,4 HP @ 2 350 rpm 
Max torque  139 Nm @ 1 440 rpm 
Cooling system  water 
Air filter type  dry 
Starting  electric motor with pre-heating air system for cold climate 
 
Operating weight
Operating weight with standard bucket, fully serviced, +80 kg operator (ISO 6016). 
Operating weight with cab and rubber shoes  4 940 kg 
Operating weight with cab and steel shoes  5 005 kg 
Canopy  -175 kg (optional) 
Additional counterweight  +250 kg 
 
Hydraulic System
The digging equipment is fully controlled by PPC servo-controls. All movements are stopped by lifting the safety levers on the tiltable case. 
Type  Komatsu CLSS 
Main pumps  2 variable displacement pumps + 1 gear pump 
Max. pump flow  51 × 2 + 32 ltr/min 
Max operating pressure:   
Working equipment  27 MPa (270 bar) 
Hydraulic motors:   
Travel  2 × variable displacement 
Swing  1 × fi xed displacement 
Hydraulic cylinders (bore × stroke):   
Boom  90 × 697 mm 
Arm  85 × 734 mm 
Bucket  75 × 580 mm 
Boom swing  95 × 630 mm 
Blade  110 × 140 mm 
Bucket breakout force (ISO 6015)  3.903 daN (3.980 kg) 
Arm crowd force (ISO 6015):   
1 640 mm arm  2.471 daN (2.520 kg) 
2 000 mm arm  2.157 daN (2.200 kg) 
 
Swing System
The rotation is operated by means of an orbital hydraulic motor. Single ball-bearing ring with internal, induction hardened toothring. Centralised lubrication of the unit. 
Swing speed  9,0 rpm 
 
Transmission
Type  2 speed hydrostatic transmission, controlled and steered by means of two levers and two pedals 
Hydraulic motors  2 × axial pistons 
Reduction system  epiclyclic reduction gears 
Max. drawbar pull  4 197 daN (4 280 kgf) 
Travel speed  2,8 - 4,6 km/h 
 
Blade
Type  electro-welded, single unit structure 
Weidht x Height  1 960 × 355 mm 
Max. lifiting above ground level  430 mm 
Max. lifiting below ground level  330 mm 
 
Undercarriage
Central lower casted X-frame and carriage frame with boxed section. 
Shoes (each side)  39 
Track rollers (each side) 
Shoe width  400 mm 
Ground pressure (standard)  0,29 kg/cm² 
 
Electric System
Voltage  12 V 
Battery  72 Ah 
Alternator  40 A 
Starter motor  2,3 kW 
 
Service capacities
Fuel tank  65 ltr 
Radiator and system  7,3 ltr 
Engine oil  7,4 ltr 
Final reduction gears (each side)  0,8 ltr 
Hydraulic system  55 ltr 


Charts

Dimensions and Working range