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Komatsu D51EXi-24 Bulldozer If you need the “Swiss Army knife” of dozers that can adapt easily to multiple situations — from golf course construction to highway projects — this dozer is it. Built for precise, high-speed grading, its standard parallel link undercarriage system has rotating bushings, which help reduce undercarriage wear, especially while traveling in reverse at high speeds. And the new Tier 4 Final engine and electronically controlled hydrostatic transmission help keep fuel use remarkably low for a dozer this powerful.
Learns as it works: With proactive dozing control, even your less experienced operators can automatically cut/strip from existing terrain. The dozer measures the terrain it tracks over and uses that data to plan the next pass. Can improve productivity by up to 60% versus previous generation. Spreads fill material automatically: Lift layer control automatically lets your operators spread fill from existing terrain with the press of a button. The dozer measures the terrain it tracks over and uses the data it gathers to plan the next pass. Attain up to double your production and achieve consistent layers for compaction quality. Levels material even during rough dozing: Tilt steering control automatically tilts the blade to maintain straight travel during rough dozing. Reduces operator steering input by up to 80%. Quick surface creation: Operators can create a temporary design surface with the press of a button. Combined with other iMC 2.0 functions, your crew can begin stripping or spreading using automated input while waiting for the finish grade model. Close the operator skill gap: Machine logic allows the dozer to continuously learn the terrain and make calculated decisions for the next pass. Intelligent Machine Control helps lessen the skill gap between new and experienced operators. Advanced machine control: In select situations — auto stripping, rough dozing, spreading, advanced finish grading — operators can opt for nearly 100% machine control auto usage. They can even apply automatic control without having a 3D model. A machine that learns from the operator: Automatic functions give the dozer the ability to learn from operator's blade input, resulting in more adaptability, easier operation and less reliance on operator input. Outstanding blade response for finish grading: To deliver unparalleled grading performance, iMC enables the dozer to look ahead at grade transitions and alter the blade angle accordingly. With iMC, you can:
Features for iMC 2.0 dozers Learns as it works With proactive dozing control, even less experienced operators can automatically cut/strip from existing terrain. The dozer measures the terrain it tracks over and uses that data to plan the next pass. Productivity can improve by up to 60% versus previous generation. Spreads fill material automatically Lift layer control automatically lets operators spread fill from existing terrain with the press of a button. The dozer measures the terrain it tracks over and uses the data it gathers to plan the next pass for up to double your production with consistent layers for compaction quality. Levels material even during rough dozing Tilt steering control automatically tilts the blade to maintain straight travel during rough dozing. Reduces operator steering input by up to 80%. Quick surface creation Operators can create a temporary design surface with the press of a button with quick surface creation. Combined with other iMC 2.0 functions, crews can begin stripping or spreading using automated input while waiting for the finish grade model. Cutting-edge automation and job site design From automatic dozing, rough cut to finish grade, iMC-equipped Komatsu dozers help make every pass count and give you the potential for superior production compared to traditional aftermarket systems.
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| Dimensions | |
|---|---|
| Length | 15’9” |
| Width | 10’ |
| Height | 10’5” |
| Weight | 26,698 lbs. (Including ROPS cab, U frame for power angle tilt dozer, rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment) |
| Ground Clearance | 15” |
| Turning Radius | 94” |
| Operating Weight | 30,380 lbs. (Including power angle tilt dozer, ROPS cab, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank) |
| Fuel Tank Capacity | 71.3 US gallons |
| Hydraulic Capacity | 17 US gallons |
| Frame Type | Track Roller: Monocoque, large section, durable construction |
| Final Drive | In-shoe mounted, axial-piston-type travel motors, with integrated two-stage planetary gear reduction. Compact, in-shoe mount reduces risk of damage by debris. Bolt-on sprocket ring with triple labyrinth seal design. |
| Engine | |
|---|---|
| Engine Make | Komatsu |
| Engine Model | SAA4D107E-7 |
| Engine Type | 4-cycle, direct inject |
| Cylinders | 4 |
| Net Horsepower | 131 HP |
| Cooling | water-cooled |
| Bore x Stroke | 4.21” x 4.88” |
| Speed - Foreward | 1st: 0-2.1 MPH 2nd: 0-3.5 MPH 3rd: 0-5.6 MPH |
| Speed - Reverse | 1st: 0-2.5 MPH 2nd: 0-4.0 MPH 3rd: 0-5.6 MPH |
| Gross Horsepower | 133 HP |
| Governor | All-speed, electronic |
| Rated RPM | 2200 RPM |
| Lubrication System | Method: Gear pump, force lubrication Filter: Full-flow |
| Aspiration | Variable geometry, turbocharged, air-to-air aftercooled |
| Piston Displacement | 275 in³ |
| Hydraulic Fan | 122 HP |
| Fan Drive Type | Hydraulic |
| Drivetrain | |
|---|---|
| Tracks | Sealed and lubricated track: Track tension is easily adjusted w/grease gun |
| Track Length | 9’ (on ground) |
| Roller Type | Lubricated track rollers |
| Ground Pressure | 5.79 PSI |
| Track Number | 7 per side |
| Grouser Height | 2.2” |
| Hydraulic | |
|---|---|
| Control Valve | 3-spool control valve for Power Angle Tilt dozer Positions: Blade lift: Raise, hold, lower and float Blade tilt: Right, hold, and left Blade angle: Right, hold, and left Additional control valve required for ripper Position: Ripper lift: Raise, hold and lower |
| Hydraulic Tank Capacity | 17 Gallons |
| Hydraulic System | Closed-Center Load Sensing System (CLSS) designed for precise and responsive control, and for efficient simultaneous operation. |
| Hydraulic Cylinders | Double-acting, piston type |
| Number of Cylinders | Number of cylinders x bore Blade lift: 2 x 3.5” Blade tilt: 1 x 4” Blade angle: 2 x 3.5” |
| Relief Valve Setting | 3,974 psi |
| Operational | |
|---|---|
| Blade Width | 10’ |
| Blade Height | 3’8” |
| Blade Capacity | 3.5 yd³ |
| Suspension | Rigid type |
| Steering | Palm Command Control System (PCCS) joystick control for all directional movements. Pushing the joystick forward results in forward machine travel, while pulling it back reverses the machine. Simply tilt the joystick to the left or right to make a turn. Tilting the joystick fully to the left or right activates counter-rotation. Hydrostatic Transmission (HST) provides smooth, powerful turns. Fully electronic control enables smooth control that can be adjusted in the monitor. The PCCS utilizes shift buttons to increase and decrease speed. |
| Shoes | Number of shoes (each side): 44 |
| Shoe Width | 22” |
| Shoe Type | Single Grouser |
| Track Gauge | 5’10” |
| Ground Contact | 4,766 in² |
