Komatsu Excavators PC228USLC-8
PC228USLC-8 Hydraulic Excavator
Komatsu pioneered the tight tail swing design and has perfected it in the PC228USLC-8. With this excavator you can work in one lane of traffic without disturbing the other lane. Beyond its' tight swing capability, the Komatsu Excavators PC228USLC-8 has the same digging and lifting power as most standard competitive excavators.
| Model | Komatsu SAA6D107E-1* | |
| Type | Water-cooled, 4-cycle, direct injection | |
| Aspiration | Turbocharged and air-to-air aftercooled | |
| Number of cylinders | 6 | |
| Bore | 4.21" | 107 mm |
| Stroke | 4.88" | 124 mm |
| Piston displacement | 408 in³ | 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 | Mechanica | |
| Governor | All-speed control, electronic | |
| *EPA Tier 3 and EU Stage 3A emissions certified. |
| Type | HydrauMind (Hydraulic Mechanical Intelligence New Design) system, closed-center system with load sensing valves and pressure compensated valves | |
| Number of selectable working modes | 5 | |
| 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 motors 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/cm² |
| Travel circuit | 5,400 psi | 37.3 MPa 380 kgf/cm² |
| Swing circuits | 4,120 psi | 28.4 MPa 290 kgf/cm² |
| Pilot circuit | 470 psi | 3.2 MPa 33 kgf/cm² |
| 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 for 2.41 m 7'11" and 2.93 m 9'7" Arm / 1 | 4.5" x 44.1" x 3.2" | 115 mm x 1120 mm x 80 mm |
| Operating weight, including 5700 mm / 18'8" one-piece boom, 2925 mm / 9'7" arm, SAE heaped 0.80 m³ / 1.05 yd³ 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/cm² 7.28 psi |
| 700 mm 28" |
24395 kg 53,785 lb |
0.44 kg/cm² 6.21 psi |
| 800 mm 31.5" |
24675 kg 54,405 lb |
0.39 kg/cm² 5.62 psi |
| Drive method | Hydrostatic | |
| Swing reduction | Planetary gear type, double reduction | |
| Swing circle lubrication | Grease-bathed | |
| Swing lock | Mechanical disc brake | |
| Swing speed | 1.0 rpm | |
| Swing torque | 48,124 ft lbs | 6656 kg.m |
| Steering control | Two levers with pedals | |
| Drive method | Hydrostatic | |
| Maximum drawbar pull | 45,410 lb | 202 kN 20600 kgf |
| 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 |
| 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): | 2 |
| Number of track rollers (each side): | 9 |
| 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 |
