Komatsu PC78US-10 SMALL EXCAVATORS
Product Feature
Increased productivity
The improved vehicle control contributes to increased productivity while maintaining low fuel consumption.
Maximum drawbar pull
up to 2% increase
Equipped with a Blade as Standard Equipment
A blade for efficient back-filling and leveling work is equipped as standard. The dedicated pump for the blade enables smooth dozing operation.
True Tight Tail Swing For Confined Areas
Short implement swing radius
12' 2" (3710 mm) boom raising angle of the
PC78US-10 is larger than a conventional profile
excavator. The result is reduced front implement
swing radius.
100% "passive regeneration"
The new Komatsu Diesel Oxidation Catalyst (KDOC) has an integrated design that does not interfere with daily operation. This smart and simplified system removes soot using 100% "passive regeneration" without the need for a Diesel Particulate Filter. The KDOC is a simple design and does not have a scheduled service interval like a DPF and is designed for long life with no scheduled maintenance required. For owners, this means lower owning and operating costs due to less complexity and seamless operation.
Engine
| Model | |
Komatsu SAA4D95LE-6* |
| Type | |
Water cooled, 4-cycle, direct injection |
| Aspiration | |
Variable flow, turbocharged, air-to-air aftercooled EGR |
| Number of cylinders | |
4 |
| Bore |
95 mm |
3.74" |
| Stroke |
115 mm |
4.52" |
| Piston displacement | 3.26 ltr | 199 in³ |
| Horsepower: | ||
| SAE J1995 - Gross | 50.7 kW | 68 HP |
| ISO 9249 / SAE J1349 - Net | 48.8 kW | 65.5 HP |
| Rated rpm | 1950 | |
| Governor | All-speed control, electronic | |
| Lubrication system: | ||
| Method | Gear pump, force-lubrication | |
| Filter | Full-flow | |
| Air cleaner | Air cleaner, double element and auto dust evacuator | |
| *EPA Tier 4 Final emissions certified | |
|
Hydraulics
Type: HydrauMind (Hydraulic Mechanical Intelligence New Design) system, closed-center system with load sensing valve and pressure compensated valve
Drives & Brakes
| Steering control | Two levers with pedals |
| Drive method | Fully hydrostatic |
| Maximum drawbar pull | 68.2 kN 6950 kgf 15,489 lbf |
| Maximum travel speed: | |
| High | 5 km/h 3.1 mph |
| Low | 2.8 km/h 1.7 mph |
| Service brake | Hydraulic lock |
| Parking brake | Mechanical disc |
Swing System
| Driven by | Hydraulic motor |
| Swing reduction | Planetary gear |
| Swing circle lubrication | Grease-bathed |
| Swing lock | Mechanical disc brake |
| Swing speed | 10 rpm |
Undercarriage
| Center frame | X-frame leg |
| Track frame | Box-section |
| Track type | Sealed |
| Track adjuster | Hydraulic |
| Number of carrier shoes (each side) | 39 |
| Number of carrier rollers (each side) | 1 |
| Number of track rollers (each side) | 5 |
Coolant & Lubricant Capacity (refilling)
| Fuel tank | 125 ltr | 33.0 u.s. gal |
| Radiator | 13 ltr | 3.43 u.s. gal |
| Engine | 11.5 ltr | 3.04 u.s. gal |
| Final drive, each side | 1.1 ltr | 0.29 u.s. gal |
| Swing drive | 2.0 ltr | 0.53 u.s. gal |
| Hydraulic tank | 56 ltr | 14.8 u.s. gal |
Operating Weight
Operating weight includes 3710 mm 12'2" one-piece boom, 2250 mm 7'5" arm, SAE heaped 0.2 m3 0.26 yd3 bucket, rated capacity of lubricants, coolant, full fuel tank, operator, and standard equipment.
Product Parameter
| Model | |
Komatsu SAA4D95LE-6* |
| Type | |
Water cooled, 4-cycle, direct injection |
| Aspiration | |
Variable flow, turbocharged, air-to-air aftercooled EGR |
| Number of cylinders | |
4 |
| Bore |
95 mm |
3.74" |
| Stroke |
115 mm |
4.52" |
| Piston displacement | 3.26 ltr | 199 in³ |
| Horsepower: | ||
| SAE J1995 - Gross | 50.7 kW | 68 HP |
| ISO 9249 / SAE J1349 - Net | 48.8 kW | 65.5 HP |
| Rated rpm | 1950 | |
| Governor | All-speed control, electronic | |
| Lubrication system: | ||
| Method | Gear pump, force-lubrication | |
| Filter | Full-flow | |
| Air cleaner | Air cleaner, double element and auto dust evacuator | |
| *EPA Tier 4 Final emissions certified | |
|
| Main pumps: | |
|
| Pumps for | Boom, arm, bucket, and travel circuits | |
| Type | |
Variable capacity piston type, axial piston |
| Maximum flow | 160 ltr/min | 42.2 u.s. gal/min |
| Pumps for | Swing and blade | |
| Type | |
Fixed displacement gear |
| Maximum flow | 63 ltr/min | 16.64 u.s. gal/min |
| Hydraulic motors: | |
|
| Swing | |
1 x piston motor with swing holding brake |
| Relief valve setting: | |
|
| Implement, travel circuit | 26.5 MPa / 270 kgf/cm² | 3,844 psi |
| Travel circuit | 27.0 MPa 275 kgf/cm2 | 3,916 psi |
| Swing circuit | 21.1 MPa / 215 kgf/cm² | 3,060 psi |
| Blade circuit (Raise) | 12.7 MPa / 130 kgf/cm² | 1,842 psi |
| Blade circuit (Lower) | 20.0 MPa / 210 kgf/cm² | 2,900 psi |
| Hydraulic cylinders: (Number of cylinders – bore x stroke x rod diameter) |
||
| Boom / 1 | 115 mm x 858 mm x 65 mm | 4.53" x 33.8" x 2.56" |
| Arm / 1 | 100 mm x 861 mm x 60 mm | 3.9" x 33.9" x 2.36" |
| Bucket / 1 | 90 mm x 710 mm x 55 mm | 3.54" x 27.95" x 2.17" |
| Blade / 1 | 130 mm x 200 mm x 65 mm | 5.12" x 7.87" x 2.56" |
| Steering control | Two levers with pedals |
| Drive method | Fully hydrostatic |
| Maximum drawbar pull | 68.2 kN 6950 kgf 15,489 lbf |
| Maximum travel speed: | |
| High | 5 km/h 3.1 mph |
| Low | 2.8 km/h 1.7 mph |
| Service brake | Hydraulic lock |
| Parking brake | Mechanical disc |
| Driven by | Hydraulic motor |
| Swing reduction | Planetary gear |
| Swing circle lubrication | Grease-bathed |
| Swing lock | Mechanical disc brake |
| Swing speed | 10 rpm |
| Center frame | X-frame leg |
| Track frame | Box-section |
| Track type | Sealed |
| Track adjuster | Hydraulic |
| Number of carrier shoes (each side) | 39 |
| Number of carrier rollers (each side) | 1 |
| Number of track rollers (each side) | 5 |
| Fuel tank | 125 ltr | 33.0 u.s. gal |
| Radiator | 13 ltr | 3.43 u.s. gal |
| Engine | 11.5 ltr | 3.04 u.s. gal |
| Final drive, each side | 1.1 ltr | 0.29 u.s. gal |
| Swing drive | 2.0 ltr | 0.53 u.s. gal |
| Hydraulic tank | 56 ltr | 14.8 u.s. gal |
| With Blade |
||
| Track Shoes | Operating weight | Ground Pressure |
| 450 mm 18" | 7910 kg 17,439 lb |
34.9 kPa / 0.36 kg/cm2 5.06 psi |
| 600 mm 24" | 8080 kg 17,813 lb |
26.7 kPa / 0.27 kg/cm2 3.87 psi |
| 450 mm 18" Road Liner |
8050 kg 17,747 lb |
35.1 kPa / 0.36 kg/cm2 5.09 psi |
