PC228USLC-8

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Engine   
Model    Komatsu SAA6D107E-1* 
Type    Water-cooled, 4-cycle, direct injection 
Aspiration    Turbocharged and air-to-air aftercooled 
Number of cylinders   
Bore  4.21"  107 mm 
Stroke  4.88"  124 mm 
Piston displacement  408 in  6.69 ltr 
Power rating     
Gross (SAEJ1995)  155 HP @ 2000 rpm  116 kW @ 2000 rpm 
Net (ISO 9249/SAEJ1349)  148 HP @ 2000 rpm  110 kW @ 2000 rpm 
Fan drive type    Mechanical 
Governor    All-speed control, electronic 
*EPA Tier 3 and EU Stage 3A emissions certified.     
Hydraulics   
Type    HydrauMind (Hydraulic Mechanical Intelligence New Design) system, closed-center system with load sensing valves and pressure compensated valves 
Number of selectable working modes   
Main pump    Variable-capacity piston pump. 
Pumps for    Boom, arm, bucket, swing, and travel circuits. 
Maximum flow  116 u.s. gal/min  439 ltr/min 
Supply for control circuit    Self-reducing valve 
Hydraulic motors:     
Travel    2 x axial piston motor with parking brake 
Swing    1 x axial piston motor with swing holding brake 
Relief valve setting:     
Implement circuits  5,400 psi  37.3 MPa 380 kgf/cm 
Travel circuits  5,400 psi  37.3 MPa 380 kgf/cm 
Swing circuits  4,120 psi  28.4 MPa 290 kgf/cm 
Pilot circuit  470 psi  3.2 MPa 33 kgf/cm 
Hydraulic cylinders:     
(Number of cylinders bore x stroke x rod diameter)     
Boom / 2  4.7" x 54.5" x 3.3"  120 mm x 1385 mm x 85 mm 
Arm / 1  5.3" x 58.7" x 3.7"  135 mm x 1490 mm x 95 mm 
Bucket / 1  4.5" x 44.1" x 3.2"  115 mm x 1120 mm x 80 mm 
Swing System   
Drive method    Hydrostatic 
Swing reduction    Planetary gear type, double reduction 
Swing circle lubrication    Grease-bathed 
Swing lock    Mechanical disc brake 
Swing speed    11.0 rpm 
Swing torque  48,124 ft lbs  6656 kg.m 
Drive and Brakes   
Steering control    Two-lever with pedals 
Drive method    Hydrostatic 
Maximum drawbar pull  45,410 lb  202 kN 20600 kgf 
Travel motor    Axial piston motor, in-shoe design 
Reduction system    Planetary gear type, double reduction 
Gradeability    70%, 35 
Maximum travel speed (Auto-Shift):     
High  3.4 mph  5.5 km/h 
Mid  2.5 mph  4.1 km/h 
Low  1.9 mph  3.0 km/h 
Service brake    Hydraulic lock 
Parking brake    Mechanical disc brake 
Undercarriage   
Center frame    X-frame 
Track frame    Box-section 
Seal of track    Sealed track 
Track adjuster    Hydraulic 
Number of shoes (each side):    49 
Number of carrier rollers (each side):   
Number of track rollers (each side):   
Service Refill Capacities   
Fuel tank  84.5 U.S. gal  320 ltr 
Coolant  5.5 U.S. gal  21.0 ltr 
Engine  6.1 U.S. gal  23.1 ltr 
Final drive, each side  1.4 U.S. gal  5.2 ltr 
Swing drive  1.9 U.S. gal  7.1 ltr 
Hydraulic tank  33.3 u.s. gal  126 ltr 33.3 u.s. gal 
Operating Weight (approximate)   
Operating weight, including 5700 mm / 18'8" one-piece boom, 2925 mm / 9'7" arm, SAE heaped 0.80 m / 1.05 yd backhoe bucket, operator, lubricant, coolant, full fuel tank, and the standard equipment. 
Shoes  Operating Weight  Ground Pressure 
600 mm
24" 
24130 kg
53,195 lb 
0.51 kg/cm
7.28 psi 
700 mm
28" 
24395 kg
53,785 lb 
0.44 kg/cm
6.21 psi 
800 mm
31.5" 
24675 kg
54,405 lb 
0.39 kg/cm
5.62 psi 

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