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Mini Excavators : PC50MR-2

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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 
 
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