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Komatsu PC55MR-3
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Excavator Series PC55MR-3
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Features
Performance and Versatility
• Standard auxiliary hydraulics
• Standard thumb mounting bracket
• Three track options: rubber, steel, roadliner
• Automatic two-speed travel
• ISO/SAE pattern change valve
• Optional Power Angle blade
Operator Comfort
• Large operator platform
• Adjustable suspension seat with retractable seat belt
• Pilot proportional joystick controls
• Easy entry and egress
• Low noise
Service and Maintenance
• Wide opening engine hood and side covers
• Side-by-side radiator and oil cooler are easily inspected
• Grease points for work equipment are on the same side of the boom and arm
• Tilt-forward operator’s station provides full access to engine and hydraulic components
• Hydraulic hoses are alpha-numerically marked or color coded making them easy to identify
KOMTRAX® equipped machines can send location, SMR and operation maps to a secure website utilizing wireless technology.
Value, Durability, and Strength
• KOMTRAX® wireless equipment monitoring system
• High strength X-track frame
• Castings are used for boom foot, tip, and swing yoke
• Large diameter swing pin
• Reinforced arm
• O-ring face seal hydraulic fittings
• Moisture/dust resistant electrical connectors
Peace of Mind
• Two-post ROPS canopy or ROPS cab
• Neutral engine start system
• Excellent visibility enhances job site awareness
• Low emission Komatsu engine with dual element air cleaner
• One key operates the ignition and all machine locks
Specifications
| Engine | ||
| Model | Komatsu 4D88E-6 | |
| Type | Direct injection | |
| Piston displacement | 134 in³ | 2.19 ltr |
| Horsepower @ 2400 rpm: | ||
| Net (ISO 9249/SAE J1349) | 38.2 HP | 28.5 kW |
| Electric System | ||
| Operation voltage | 12 V | |
| Battery | 72 Ah | |
| Alternator | 40 A | |
| Starter | 2.3 kW | |
| Hydraulic System | ||
| Type | HydrauMind | |
| Main pump: | ||
| Type | Variable displacement x 2 | |
| Gear x 1 | ||
| Maximum flow | 14.1 x 2 + 8.9 gal/min | 53.5 x 2 + 33.8 ltr/min |
| Hydraulic motors: | ||
| Travel | Variable displacement x 2 | |
| Swing | Fixed displacement x 1 | |
| Maximum pressure setting | 3,840 psi | 270 kg/cm² |
| Auxiliary flow | 18.5 gal/min | 70 ltr/min |
| Performance | ||
| Travel speed: | ||
| High | 2.9 mph | 4.6 km/hr |
| Low | 1.7 mph | 2.8 km/hr |
| Swing speed | 9.0 rpm | |
| Ground pressure | 4.4 psi | 0.31 kg/cm² |
| Max. drawbar pull | 9,440 lb | 4280 kg |
| Gradeability | 30° | |
| Bucket digging force (ISO) | 8,770 lb | 3980 kg |
| Arm crowd force (ISO) | 5,380 lb | 2440 kg |
| Drives and Brakes | ||
| Drive method | Hydrostatic | |
| Type of travel brake | Hydraulic lock | |
| Type of travel shoe | Rubber | |
| Undercarriage | ||
| Adjustment of the track tension | Grease gun | |
| Number of carrier rollers (each side) | 1 | |
| Number of track rollers (each side) | 4 | |
| Refill Capacities | ||
| Fuel tank | 17.2 U.S. gal | 65 ltr |
| Hydraulic tank | 5.3 U.S. gal | 20 ltr |
| Engine | 2.0 U.S. gal | 7.5 ltr |
| Coolant | 2.2 U.S. gal | 8.5 ltr |
| Operating Weight (approximate) | ||
| Operating weight | ||
| (with ROPS canopy and rubber shoe) | 11,380 lb | 5160 kg |
| Blade | ||
| Width x height | 6'5" x 1'2" | 1960 x 355 mm |
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