KOMATSU PC78US-11
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Year
2024
Manufacturer
Komastu
Model
PC78US-11
Condition
New
Location
Ontario
Designed to excel in underground utility and general construction in urban environments, this new Komatsu short tail swing excavator is at home in confined spaces. Extremely transportable, it delivers high attachment flow with in-cab programmable flow rates for a wide range of attachments.
Compact design works in confined areas
Accepts a wide range of attachments
Easy to transport
Uses up to 13% less fuel than prior model
Compact design works in confined areas
Accepts a wide range of attachments
Easy to transport
Uses up to 13% less fuel than prior model
Engine
| Model | Komatsu SAA3D95E-1* |
| Type | Water-cooled, 4-cycle, direct injection |
| Aspiration | Turbocharged, aftercooled, cooled EGR |
| Number of Cylinders | 3 |
| Bore | 3.74 in |
| Stroke | 4.52 in |
| Piston displacement | 149.5 in3 |
| Horsepower @ 1,900 rpm: | |
| SAE J1995 / Gross | 68.0 HP |
| ISO 9249 / SAE J1349 / Net | 67.9 HP |
| Rated rpm | 1,850 |
| Fan drive method for radiator cooling | Mechanical with viscous fan clutch |
| Governor | All-speed control, electronic |
*EPA Tier 4 Final emissions certified
Hydraulics
HydrauMind (Hydraulic Mechanical Intelligence New Design) system, closed-center system with load-sensing valves and pressure-compensated valves
| Number of selectable working modes | 6 |
| Main pumps: | |
| Pumps for | Boom, arm, bucket, swing, and travel circuits |
| Type | Variable displacement, axial piston |
| Maximum flow | 44.4 gpm |
| Pumps for | Blade |
| Type | Fixed displacement gear |
| Maximum flow | 17.0 gpm |
| Hydraulic motors: | |
| Travel | 2 x piston motor with parking brake |
| Swing | 1 x axial piston motor with swing holding brake |
| Relief valve setting: | |
| Implement circuits | 4,264 psi |
| Travel circuits | 4,337 psi |
| Swing circuit | 3,176 psi |
| Pilot circuit | 464 psi |
| Blade circuit (Raise) | 1,784 psi |
| Blade circuit (Lower) | 3,060 psi |
| Hydraulic cylinders (Number of cylinders): | bore x stroke x rod |
| Boom (1) | 4.33 x 33.8 x 2.56 in |
| Arm (1) | 3.74 x 33.9 x 2.36 in |
| Bucket (1) | 3.35 x 27.95 x 2.17 in |
| Blade (1) | 5.12 x 5.12 x 2.56 in |
| Auxiliary hydraulics (two-stage relief): | |
| Two-way | 36.5 gpm |
| Relief | 3,830 psi |
| One-way | 21.1 gpm |
| Relief in breaker mode | 2,490 psi |
Drives and Brakes
| Steering control | Two levers with pedals |
| Drive method | Hydrostatic |
| Maximum drawbar pull | 15,309 lbf. |
| Maximum travel speed: | |
| High | 3.1 mph |
| Low | 1.9 mph |
| Service brake | Hydraulic lock |
| Parking brake | Mechanical discs |
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 shoes | 39 each side |
| Number of carrier rollers | 1 each side |
| Number of track rollers | 5 each side |
Coolant & Lubricant Capacity (Refilling)
| Fuel tank | 33.0 US gal |
| Radiator | 4.8 US gal |
| Engine | 2.7 US gal |
| Final drive, each side | 0.29 US gal |
| Swing drive | 0.52 US gal |
| Hydraulic tank | 14.8 US gal |
Operating Weight (Approximate)
Operating weight includes 12 ft. 2 in one-piece boom, 7 ft. 5 in arm, ISO 7451 heaped 0.26 yd3 bucket, blade, rated capacity of lubricants, coolant, full fuel tank, operator, and standard equipment.
| Track Shoes | Operating Weight | Ground Pressure |
| Road liner 18" | 17,791 lbs. | 5.20 psi |
| Triple grouser 18" | 17,483 lbs. | 5.20 psi |
| Triple grouser 24" | 18,188 lbs. | 3.90 psi |
| Rubber shoe 18" | 17,438 lbs. | 5.10 psi |
Engine:
- Komatsu SAA3D95E-1
- Auto deceleration
- Air cleaner, double element with auto dust evacuator
- B20 Biodiesel compatible*
- Cooling system viscous fan clutch, suction type
- Cooling system with expansion tank
- Engine oil-pan drain valve
- Fixed turbocharger
- Komatsu Diesel Oxidation Catalyst (KDOC)
Electrical system:
- Alternator, 24 V/60 A
- Batteries, 2 x 12 V/55 Ah
- Battery disconnect switch
- Lock out/tag out provisioned
- Starting motor 24 V/4.5 kW
Guards and covers:
- Fan guard
- Pump/engine partition cover
- Diesel ground level fuel fill and hydraulic tank fill cap are under lockable side covers
- Car body swivel guards
Operator environment:
- 12 V x 2 power supply
- Attachment flow switching through monitor
- Auto climate control
- Auto idle shutdown
- Cab includes: antenna, multifunction audio with USB and Bluetooth wireless technology, floormat,intermittent front windshield wiper and washer, large ceiling hatch, pull-up front window, removable lower windshield
- Handrails
- Komtrax 5.0 (cellular 4G system)
- LED working light on boom
- LED working light on cab
- Lock lever auto lock function
- Monitor panel
- Operator identification function
- Rearview mirrors (LH, rear)
- Rearview monitoring system
- ROPS cab (ISO 12117-2)
- Seat belt, 3.1"
- Suspension seat
- Swing holding brake
- Travel alarm
- Travel Hi/Lo switch on blade control lever
Hydraulic system:
- Dual stage relief valve
- Proportional control on floor for auxiliary hydraulics
- Hydraulic control unit-1 additional actuator
- One-way/two-way auxiliary hydraulic flow
- Operation pattern change-over valve (two-way, ISO/BH)
- One-variable piston pump and one gear pump
- Auxiliary circuit return filter and accumulator
- Automatic swing brake
- Automatic load sensing two speed travel
Work equipment:
- Blade 7'7" (welded cutting edge type)
- Counterweight, 1,775 lbs.
Undercarriage:
- Triple grouser shoe, 18"
*Up to 20% blended biodiesel fuel and paraffine fuel can be used. Please consult your Komatsu distributor for detail.
Guards and covers:
- Bolt-on top guard (operator protective guards level 2)
- Cab front guard
— Full height front window mesh guard (Level 1)
Work equipment:
- Boom,
— 11'2" swing type - Arm,
— 6'11" arm assembly with provision for hydraulic thumb - Blade,
— 8' 1" wide blade (requires 24" shoes)
Undercarriage:
- Shoes:
— 18" Road Liner shoes
— 24" Triple grouser shoes - Rubber belt track
— 18"
SUPPORT YOU CAN COUNT ON
Warranty Programs
Experience the peace of mind that comes with Komatsu’s warranty. Komatsu offers a standard warranty on all machines — plus extended coverage options that help extend the life of your investment.