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    Komatsu D155A-6 VS Komatsu D275A-5R Dozer

    Komatsu D155A-6 vs Komatsu D275A-5R: the two differ on 61 of 77 listed specs. The main differences are Engine (Komatsu 360 HP vs Komatsu 449 HP), Operating Weight (41,700 kg vs 50,850 kg), Weight (41700 kg vs 50850 kg), Fuel Tank (625 L vs 840 L). The other 16 specs are the same.

    Specs from OEM brochures · comparison updated Sep 2026

    Komatsu D155A-6
    Price Available Soon*

    Komatsu D155A-6

    • Engine

      Komatsu 360 HP

    • Weight

      41700 kg

    • Blade Capacity

      9.4 m³

    • Blade Type

      Semi-U tilt

    • Blade W x H

      4130 x 1790 mm

    • Speeds (F/R)

      4 F / 4 R

    Mining Dozers
    Komatsu D275A-5R
    Price Available Soon*

    Komatsu D275A-5R

    • Engine

      Komatsu 449 HP

    • Weight

      50850 kg

    • Blade Capacity

      13.7 m³

    • Blade Type

      Semi-U tilt

    • Blade W x H

      4300 x 1960 mm

    • Speeds (F/R)

      3F / 3R

    Mining Dozers

    Add a third machine

    What's different: Komatsu D155A-6 vs Komatsu D275A-5R

    61 specs differ, 16 are identical. The full tables are below.

    SpecKomatsu D155A-6Komatsu D275A-5R
    EngineKomatsu 360 HPKomatsu 449 HP
    Operating Weight41,700 kg50,850 kg
    Weight41700 kg50850 kg
    Fuel Tank625 L840 L
    Blade Capacity9.4 m³13.7 m³
    Warranty12 Months12 months / 2000 hrs
    BrandKomatsu DozerL&T Komatsu Dozer
    Blade W x H4130 x 1790 mm4300 x 1960 mm

    See all 61 differences ↓

    * Ex-factory price ranges are indicative for Oct 2026 and change with variant, city and offers; confirm with the dealer. On-road cost adds transport, RTO, insurance and accessories. Disclaimer

    The comparisons provided are based on the technical specifications published by the respective OEMs on their official websites and brochures. Please confirm these details directly with the OEMs before making any final decision.

    Key Highlights Komatsu D155A-6Komatsu D275A-5R
    Komatsu D155A-6 VS Komatsu D275A-5R Dozer

    Komatsu D155A-6 vs Komatsu D275A-5R: the two differ on 61 of 77 listed specs. The main differences are Engine (Komatsu 360 HP vs Komatsu 449 HP), Operating Weight (41,700 kg vs 50,850 kg), Weight (41700 kg vs 50850 kg), Fuel Tank (625 L vs 840 L). The other 16 specs are the same.

    Specs from OEM brochures · comparison updated Sep 2026

    Komatsu D155A-6
    Komatsu D155A-6

    Price Available Soon

    Komatsu D275A-5R
    Komatsu D275A-5R

    Price Available Soon

    Particulars Komatsu D155A-6 Komatsu D275A-5R

    Komatsu D155A-6 vs Komatsu D275A-5R: which mining dozer matches your production step?

    The Komatsu D155A-6 is the smaller of the two, at 360 HP against the Komatsu D275A-5R's 449 HP, with a 9.4 m³ blade against 13.7 m³. It turns in a far tighter radius of 2,140 mm against the D275A-5R's 3,900 mm, useful in tight quarry corners. The Komatsu D275A-5R carries more blade capacity and a bigger fuel tank, and its lower ground bearing pressure means it sinks less on soft ground than the D155A-6, even though it is the heavier machine.

    Choose by where you sit on the production ladder. A contractor moving up from construction-class equipment into mining-class ownership gets a practical start in the D155A-6, with a smaller frame that is easier to turn and place. A site that has outgrown that entry point, and needs more blade volume and fuel range, fits the D275A-5R better. Both are mining dozers in our dozer range, and our bulldozer guide can help size the right class for your pit.

    Komatsu D155A-6

    Pros:

    • Turns in a tighter radius of 2,140 mm for confined pit corners and quarry benches
    • Two ripper choices, multi-shank or giant single-shank, to match different ground
    • Automatic TORQFLOW transmission with a lockup converter for steady fuel use on long pushes
    • Smaller, easier-to-place frame for a first mining-class dozer
    • Backed by Komatsu's dealer network for parts and diagnostics

    Cons:

    • Less powerful at 360 HP against the D275A-5R's 449 HP
    • Smaller blade at 9.4 m³ against 13.7 m³
    • Higher ground bearing pressure, sinks more on the same soft ground
    • Smaller fuel tank at 625 litres, needs more frequent refuelling on long shifts

    Komatsu D275A-5R

    Pros:

    • More powerful at 449 HP with a bigger 13.7 m³ blade
    • Lower ground bearing pressure, sinks less on soft mining ground
    • Larger fuel tank at 840 litres for longer shifts
    • Sits between common mining classes for medium-scale opencast production
    • Choice of giant single-shank or 3-shank multi-shank ripper

    Cons:

    • Wider turning radius at 3,900 mm, less nimble in tight pit corners
    • Heavier machine, needs more haul-road and transport planning than the D155A-6
    • Bigger footprint needs more site space to manoeuvre than the D155A-6

    Pros:

    Cons:

    Closing Recommendation

    The Komatsu D155A-6 suits a contractor moving up from construction-class equipment into mining-class dozer ownership, where a smaller frame and tighter turning radius still get the job done. The Komatsu D275A-5R suits medium-scale opencast mining that has outgrown entry-level capacity and needs more blade volume and fuel range for longer shifts. So match the machine to your work: Komatsu D155A-6 for a first step into mining-class ownership, Komatsu D275A-5R for medium-scale opencast production.

    Komatsu D155A-6 Vs Komatsu D275A-5R Dozer Price, Technical Specifications & Features

    BrandKomatsu DozerL&T Komatsu Dozer
    TypeMining DozersMining Dozers
    Operating CostNot AvailableNot Available
    PricePrice Available SoonPrice Available Soon
    EngineKomatsu 360 HPKomatsu 449 HP
    Weight41700 kg50850 kg
    Blade Capacity9.4 m³13.7 m³
    Blade TypeSemi-U tiltSemi-U tilt
    Blade W x H4130 x 1790 mm4300 x 1960 mm
    Speeds (F/R)4 F / 4 R3F / 3R
    Quick Overview:The Komatsu D155A-6 is a 41.7-tonne mining crawler dozer powered by a 360 HP engine. Its 9.4 m³ blade provides substantial material-moving capacity, while two ripper configurations give operators different approaches to breaking. The 3-shank multi-shank ripper reaches 900 mm, whereas the giant single-shank reaches 1,370 mm for deeper work. SIGMADOZER, Semi-U and Full-U blade configurations are available for different applications. Ground bearing pressure is 115.8 kPa, with 500 mm of ground clearance for rough mining surfaces. A 625-litre fuel tank supports full-shift operation. The D155A-6 is the smallest of Komatsu's listed mining crawler dozers and sits below the D275A-5R, D375A-6 and D475A-5E0. Quarry and opencast operations are suitable applications. Pricing is available on request from mining dozer dealers. A mining contractor moving beyond construction-class equipment can consider this dozer machine when greater pushing and ripping capacity becomes necessary. The two ripper configurations allow buyers to match the setup to the ground. Its operating weight keeps it below the larger Komatsu mining machines. For operators entering mining-class dozer ownership, the D155A-6 provides a practical starting point before moving into higher-capacity equipment.The Komatsu D275A-5R is a 50.9-tonne mining crawler dozer powered by a 449 HP engine. Its 13.7 m³ blade handles heavy cuts, while the 840-litre fuel tank supports long working shifts. A 3-shank multi-shank ripper provides wider breaking coverage, while the variable giant single-shank reaches 1,420 mm for deeper work. The choice allows the same machine to handle different ground conditions. Tractor-only ground bearing pressure is 87.3 kPa and rises to about 118 kPa in full operating trim. Firm mining benches are better suited to this configuration than soft fill. The D275A-5R sits between the D155A-6 and D375A-6 in Komatsu's mining range. Its operating size makes it suitable for quarry and overburden work where construction-class machines are no longer sufficient. Mining contractors can consider this dozer machine when daily production requirements have moved beyond the D155A-6. The two ripper choices provide flexibility between deep breaking and wider coverage. Its blade capacity also supports substantial material movement during each pass. Buyers can therefore compare the required ripping depth, ground conditions and production volume before selecting this model for mining work.
    Agency reviewPlanning to buy the Komatsu D155A-6 Dozer in India? Get the best price, EMI & finance options, and delivery timelines by submitting a quick enquiry.Planning to buy the Komatsu D275A-5R Dozer in India? Get the best price, EMI & finance options, and delivery timelines by submitting a quick enquiry.

    Komatsu D155A-6 vs Komatsu D275A-5R: which mining dozer matches your production step?

    The Komatsu D155A-6 is the smaller of the two, at 360 HP against the Komatsu D275A-5R's 449 HP, with a 9.4 m³ blade against 13.7 m³. It turns in a far tighter radius of 2,140 mm against the D275A-5R's 3,900 mm, useful in tight quarry corners. The Komatsu D275A-5R carries more blade capacity and a bigger fuel tank, and its lower ground bearing pressure means it sinks less on soft ground than the D155A-6, even though it is the heavier machine.

    Choose by where you sit on the production ladder. A contractor moving up from construction-class equipment into mining-class ownership gets a practical start in the D155A-6, with a smaller frame that is easier to turn and place. A site that has outgrown that entry point, and needs more blade volume and fuel range, fits the D275A-5R better. Both are mining dozers in our dozer range, and our bulldozer guide can help size the right class for your pit.

    Komatsu D155A-6

    Pros:

    • Turns in a tighter radius of 2,140 mm for confined pit corners and quarry benches
    • Two ripper choices, multi-shank or giant single-shank, to match different ground
    • Automatic TORQFLOW transmission with a lockup converter for steady fuel use on long pushes
    • Smaller, easier-to-place frame for a first mining-class dozer
    • Backed by Komatsu's dealer network for parts and diagnostics

    Cons:

    • Less powerful at 360 HP against the D275A-5R's 449 HP
    • Smaller blade at 9.4 m³ against 13.7 m³
    • Higher ground bearing pressure, sinks more on the same soft ground
    • Smaller fuel tank at 625 litres, needs more frequent refuelling on long shifts

    Komatsu D275A-5R

    Pros:

    • More powerful at 449 HP with a bigger 13.7 m³ blade
    • Lower ground bearing pressure, sinks less on soft mining ground
    • Larger fuel tank at 840 litres for longer shifts
    • Sits between common mining classes for medium-scale opencast production
    • Choice of giant single-shank or 3-shank multi-shank ripper

    Cons:

    • Wider turning radius at 3,900 mm, less nimble in tight pit corners
    • Heavier machine, needs more haul-road and transport planning than the D155A-6
    • Bigger footprint needs more site space to manoeuvre than the D155A-6

    Pros:

    Cons:

    Closing Recommendation

    The Komatsu D155A-6 suits a contractor moving up from construction-class equipment into mining-class dozer ownership, where a smaller frame and tighter turning radius still get the job done. The Komatsu D275A-5R suits medium-scale opencast mining that has outgrown entry-level capacity and needs more blade volume and fuel range for longer shifts. So match the machine to your work: Komatsu D155A-6 for a first step into mining-class ownership, Komatsu D275A-5R for medium-scale opencast production.

    Komatsu D155A-6 Vs Komatsu D275A-5R Dozer Price, Technical Specifications & Features

    Komatsu D155A-6Komatsu D275A-5R
    Brand
    Komatsu DozerL&T Komatsu Dozer
    Type
    Mining DozersMining Dozers
    Price
    Price Available SoonPrice Available Soon
    Engine
    Komatsu 360 HPKomatsu 449 HP
    Weight
    41700 kg50850 kg
    Blade Capacity
    9.4 m³13.7 m³
    Blade Type
    Semi-U tiltSemi-U tilt
    Blade W x H
    4130 x 1790 mm4300 x 1960 mm
    Speeds (F/R)
    4 F / 4 R3F / 3R
    Quick Overview:
    The Komatsu D155A-6 is a 41.7-tonne mining crawler dozer powered by a 360 HP engine. Its 9.4 m³ blade provides substantial material-moving capacity, while two ripper configurations give operators different approaches to breaking. The 3-shank multi-shank ripper reaches 900 mm, whereas the giant single-shank reaches 1,370 mm for deeper work. SIGMADOZER, Semi-U and Full-U blade configurations are available for different applications. Ground bearing pressure is 115.8 kPa, with 500 mm of ground clearance for rough mining surfaces. A 625-litre fuel tank supports full-shift operation. The D155A-6 is the smallest of Komatsu's listed mining crawler dozers and sits below the D275A-5R, D375A-6 and D475A-5E0. Quarry and opencast operations are suitable applications. Pricing is available on request from mining dozer dealers. A mining contractor moving beyond construction-class equipment can consider this dozer machine when greater pushing and ripping capacity becomes necessary. The two ripper configurations allow buyers to match the setup to the ground. Its operating weight keeps it below the larger Komatsu mining machines. For operators entering mining-class dozer ownership, the D155A-6 provides a practical starting point before moving into higher-capacity equipment.The Komatsu D275A-5R is a 50.9-tonne mining crawler dozer powered by a 449 HP engine. Its 13.7 m³ blade handles heavy cuts, while the 840-litre fuel tank supports long working shifts. A 3-shank multi-shank ripper provides wider breaking coverage, while the variable giant single-shank reaches 1,420 mm for deeper work. The choice allows the same machine to handle different ground conditions. Tractor-only ground bearing pressure is 87.3 kPa and rises to about 118 kPa in full operating trim. Firm mining benches are better suited to this configuration than soft fill. The D275A-5R sits between the D155A-6 and D375A-6 in Komatsu's mining range. Its operating size makes it suitable for quarry and overburden work where construction-class machines are no longer sufficient. Mining contractors can consider this dozer machine when daily production requirements have moved beyond the D155A-6. The two ripper choices provide flexibility between deep breaking and wider coverage. Its blade capacity also supports substantial material movement during each pass. Buyers can therefore compare the required ripping depth, ground conditions and production volume before selecting this model for mining work.
    61 differ · 16 identical

    Key highlights: Komatsu D155A-6 vs Komatsu D275A-5R Dozer

    Komatsu D155A-6Komatsu D275A-5R
    Engine MakeKomatsu SAA6D140E-5Komatsu SAA6D140E-5
    Rated Engine Power268 kW (360 HP) @ 1900 rpm335 kW (449 HP) @ 2000 rpm
    Maximum TorqueNANA
    Max Forward Speed11.4 km/h11.2 km/h
    Max Drawbar PullNANA
    Fuel Tank625 L840 L
    Overall Width4130 mm4300 mm
    Track Shoe Width560 mm610 mm
    Ground Bearing Pressure115.8 kPa87.3 kPa tractor only; 118 kPa operating
    Blade Optionsangle dozer, Full-U, Semi-U / strengthened Semi-U, SIGMADOZER / strengthened SIGMADOZERdual-tilt versions, Semi-U tilt, U tilt
    RipperOptional: variable multi-shank 3-shank (3760 kg; dig 900 mm) or variable giant single-shank (3380 kg; dig 1370 mm)Variable giant ripper (4600 kg; digging depth 1420 mm) or 3-shank multi-shank (4462 kg)
    AC CabinOptional (high-capacity)Optional (AC with heater and defroster)
    Warranty12 Months12 months / 2000 hrs

    Key highlights: Komatsu D155A-6 vs Komatsu D275A-5R Dozer

    Komatsu D155A-6Komatsu D275A-5R
    Engine Make
    Komatsu SAA6D140E-5Komatsu SAA6D140E-5
    Rated Engine Power
    268 kW (360 HP) @ 1900 rpm335 kW (449 HP) @ 2000 rpm
    Maximum Torque
    NANA
    Max Forward Speed
    11.4 km/h11.2 km/h
    Max Drawbar Pull
    NANA
    Fuel Tank
    625 L840 L
    Overall Width
    4130 mm4300 mm
    Track Shoe Width
    560 mm610 mm
    Ground Bearing Pressure
    115.8 kPa87.3 kPa tractor only; 118 kPa operating
    Blade Options
    angle dozer, Full-U, Semi-U / strengthened Semi-U, SIGMADOZER / strengthened SIGMADOZERdual-tilt versions, Semi-U tilt, U tilt
    Ripper
    Optional: variable multi-shank 3-shank (3760 kg; dig 900 mm) or variable giant single-shank (3380 kg; dig 1370 mm)Variable giant ripper (4600 kg; digging depth 1420 mm) or 3-shank multi-shank (4462 kg)
    AC Cabin
    Optional (high-capacity)Optional (AC with heater and defroster)
    Warranty
    12 Months12 months / 2000 hrs

    Full specifications: Komatsu D155A-6 vs Komatsu D275A-5R Dozer

    Engine

    2683326811
    ModelKomatsu SAA6D140E-5Komatsu SAA6D140E-5
    FuelDieselDiesel
    Type4-cycle, water-cooled, direct injection; turbocharged, air-to-air aftercooled4-stroke, water-cooled, turbocharged, air-to-air aftercooled, direct injection
    No. of Cylinders6 (140 x 165 mm)6
    Piston Displacement15.24 L15.24 L
    Rated Engine Power268 kW (360 HP) @ 1,900 rpm335 kW (449 HP) @ 2,000 rpm
    Maximum TorqueNANA

    Transmission

    2683326811
    Transmission TypeAutomatic TORQFLOW planetary powershift, ECMV controlled; automatic / manual gearshift modesTORQFLOW power shift with ECMV
    Torque ConverterWater-cooled, 3-element, 1-stage, 1-phaseWater-cooled, 3-element, 1-stage, 1-phase
    Speeds (F/R)4 F / 4 R (1st, 2nd, 3rd-L, 3rd)3F / 3R
    Max Forward Speed11.4 km/h11.2 km/h
    Max Reverse Speed13.7 km/h14.9 km/h
    Final DriveDouble reduction, spur + planetary; bolt-on segmented sprocketsDouble-reduction spur + planetary, segmented bolt-on sprocket

    Performance

    2683326811
    Max Drawbar PullNANA
    GradeabilityNANA
    Min Turning Radius2,140 mm3,900 mm

    Steering & Brakes

    2683326811
    Steering TypePCCS lever control; wet multiple-disc steering clutchesWet multiple-disc, ECMV controlled, PCCS joystick
    BrakesWet multiple-disc, pedal-controlled, spring-actuated / hydraulically released; gearshift lock lever applies parking brakeWet multiple-disc (maintenance-free), spring loaded

    Undercarriage

    2683326811
    SuspensionOscillation-type equalizer bar, forward-mounted pivot shafts; monocoque track roller frameOscillating equalizer bar + pivot shaft (K-Bogie)
    No of Bottom Rollers77
    No of Top Rollers22
    Track Shoes (Each Side)4139
    Track Shoe Width560 mm610 mm
    Grouser Height80 mm88 mm
    Track Gauge2,140 mmNA
    Ground Contact Area35,280 cm242,456 cm²
    Ground Bearing Pressure115.8 kPa87.3 kPa tractor only; 118 kPa operating

    Dozer Blade

    2683326811
    Standard Blade TypeSemi-U tiltSemi-U tilt dozer
    Blade Capacity9.4 m³13.7 m³
    Blade Width x Height4,130 x 1,790 mm4,300 x 1,960 mm
    Max Lift Above Ground1,250 mm1,450 mm
    Max Drop Below Ground590 mm640 mm
    Blade Tilt Adjustment950 mm1,000 mm
    Blade OptionsSemi-U / strengthened Semi-U, Full-U, angle dozer, SIGMADOZER / strengthened SIGMADOZERSemi-U tilt, U tilt, dual-tilt versions

    Ripper

    2683326811
    Ripper AvailabilityOptional: variable multi-shank 3-shank (3,760 kg, dig 900 mm) or variable giant single-shank (3,380 kg, dig 1,370 mm)Variable giant ripper (4,600 kg, digging depth 1,420 mm) or 3-shank multi-shank (4,462 kg)

    Hydraulic System

    2683326811
    Hydraulic PumpVariable piston pump, CLSS (closed-centre load sensing)Plunger pump (CLSS)
    Maximum Flow200 L/min @ rated rpm (implement)230 L/min
    Relief Pressure27.5 MPa (implement)27.5 MPa
    Blade ControlPCCS palm-command PPC joystick; raise / hold / lower / floatPCCS palm joystick, PPC

    Machine Weights

    2683326811
    Operating Weight41,700 kg50,850 kg
    Weight BasisStrengthened Semi-U + giant ripper + cab + operator + full fuelSemi-U tilt dozer + giant ripper + steel cab + ROPS + operator

    Static Dimensions

    2683326811
    Overall Length6,010 mm9,290 mm
    Overall Width4,130 mm4,300 mm
    Overall Height3,510 mm3,915 mm
    Min. Ground Clearance500 mm507 mm

    Service Capacities

    2683326811
    Fuel Tank625 L840 L
    Engine Oil37 L52 L
    Engine Coolant82 L (coolant)100 L
    Hydraulic System85 L (Semi-U / U, refill) + 37 L (ripper, additional)130 L
    Transmission System90 L (transmission, bevel gear & steering)90 L
    Final Drive (Each Side)31 L40 L

    Operator Environment

    2683326811
    Operator StationOpen ROPS standard; integrated ROPS cab optional (430 kg, ISO 3471 / FOPS ISO 3449); suspension seatHexagonal cab (pressurized optional), ROPS brackets
    AC CabinOptional (high-capacity)Optional (AC with heater and defroster)
    Monitoring7-in TFT LCD multi-monitor (10 languages), KOMTRAX built-in; 4-stage troubleshooting codesMonitor with self-diagnostic function

    Full specifications: Komatsu D155A-6 vs Komatsu D275A-5R Dozer

    Engine

    Komatsu D155A-6Komatsu D275A-5R
    Model
    Komatsu SAA6D140E-5Komatsu SAA6D140E-5
    Fuel
    DieselDiesel
    Type
    4-cycle, water-cooled, direct injection; turbocharged, air-to-air aftercooled4-stroke, water-cooled, turbocharged, air-to-air aftercooled, direct injection
    No. of Cylinders
    6 (140 x 165 mm)6
    Piston Displacement
    15.24 L15.24 L
    Rated Engine Power
    268 kW (360 HP) @ 1,900 rpm335 kW (449 HP) @ 2,000 rpm
    Maximum Torque
    NANA

    Transmission

    Komatsu D155A-6Komatsu D275A-5R
    Transmission Type
    Automatic TORQFLOW planetary powershift, ECMV controlled; automatic / manual gearshift modesTORQFLOW power shift with ECMV
    Torque Converter
    Water-cooled, 3-element, 1-stage, 1-phaseWater-cooled, 3-element, 1-stage, 1-phase
    Speeds (F/R)
    4 F / 4 R (1st, 2nd, 3rd-L, 3rd)3F / 3R
    Max Forward Speed
    11.4 km/h11.2 km/h
    Max Reverse Speed
    13.7 km/h14.9 km/h
    Final Drive
    Double reduction, spur + planetary; bolt-on segmented sprocketsDouble-reduction spur + planetary, segmented bolt-on sprocket

    Performance

    Komatsu D155A-6Komatsu D275A-5R
    Max Drawbar Pull
    NANA
    Gradeability
    NANA
    Min Turning Radius
    2,140 mm3,900 mm

    Steering & Brakes

    Komatsu D155A-6Komatsu D275A-5R
    Steering Type
    PCCS lever control; wet multiple-disc steering clutchesWet multiple-disc, ECMV controlled, PCCS joystick
    Brakes
    Wet multiple-disc, pedal-controlled, spring-actuated / hydraulically released; gearshift lock lever applies parking brakeWet multiple-disc (maintenance-free), spring loaded

    Undercarriage

    Komatsu D155A-6Komatsu D275A-5R
    Suspension
    Oscillation-type equalizer bar, forward-mounted pivot shafts; monocoque track roller frameOscillating equalizer bar + pivot shaft (K-Bogie)
    No of Bottom Rollers
    77
    No of Top Rollers
    22
    Track Shoes (Each Side)
    4139
    Track Shoe Width
    560 mm610 mm
    Grouser Height
    80 mm88 mm
    Track Gauge
    2,140 mmNA
    Ground Contact Area
    35,280 cm242,456 cm²
    Ground Bearing Pressure
    115.8 kPa87.3 kPa tractor only; 118 kPa operating

    Dozer Blade

    Komatsu D155A-6Komatsu D275A-5R
    Standard Blade Type
    Semi-U tiltSemi-U tilt dozer
    Blade Capacity
    9.4 m³13.7 m³
    Blade Width x Height
    4,130 x 1,790 mm4,300 x 1,960 mm
    Max Lift Above Ground
    1,250 mm1,450 mm
    Max Drop Below Ground
    590 mm640 mm
    Blade Tilt Adjustment
    950 mm1,000 mm
    Blade Options
    Semi-U / strengthened Semi-U, Full-U, angle dozer, SIGMADOZER / strengthened SIGMADOZERSemi-U tilt, U tilt, dual-tilt versions

    Ripper

    Komatsu D155A-6Komatsu D275A-5R
    Ripper Availability
    Optional: variable multi-shank 3-shank (3,760 kg, dig 900 mm) or variable giant single-shank (3,380 kg, dig 1,370 mm)Variable giant ripper (4,600 kg, digging depth 1,420 mm) or 3-shank multi-shank (4,462 kg)

    Hydraulic System

    Komatsu D155A-6Komatsu D275A-5R
    Hydraulic Pump
    Variable piston pump, CLSS (closed-centre load sensing)Plunger pump (CLSS)
    Maximum Flow
    200 L/min @ rated rpm (implement)230 L/min
    Relief Pressure
    27.5 MPa (implement)27.5 MPa
    Blade Control
    PCCS palm-command PPC joystick; raise / hold / lower / floatPCCS palm joystick, PPC

    Machine Weights

    Komatsu D155A-6Komatsu D275A-5R
    Operating Weight
    41,700 kg50,850 kg
    Weight Basis
    Strengthened Semi-U + giant ripper + cab + operator + full fuelSemi-U tilt dozer + giant ripper + steel cab + ROPS + operator

    Static Dimensions

    Komatsu D155A-6Komatsu D275A-5R
    Overall Length
    6,010 mm9,290 mm
    Overall Width
    4,130 mm4,300 mm
    Overall Height
    3,510 mm3,915 mm
    Min. Ground Clearance
    500 mm507 mm

    Service Capacities

    Komatsu D155A-6Komatsu D275A-5R
    Fuel Tank
    625 L840 L
    Engine Oil
    37 L52 L
    Engine Coolant
    82 L (coolant)100 L
    Hydraulic System
    85 L (Semi-U / U, refill) + 37 L (ripper, additional)130 L
    Transmission System
    90 L (transmission, bevel gear & steering)90 L
    Final Drive (Each Side)
    31 L40 L

    Operator Environment

    Komatsu D155A-6Komatsu D275A-5R
    Operator Station
    Open ROPS standard; integrated ROPS cab optional (430 kg, ISO 3471 / FOPS ISO 3449); suspension seatHexagonal cab (pressurized optional), ROPS brackets
    AC Cabin
    Optional (high-capacity)Optional (AC with heater and defroster)
    Monitoring
    7-in TFT LCD multi-monitor (10 languages), KOMTRAX built-in; 4-stage troubleshooting codesMonitor with self-diagnostic function

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    Questions buyers ask about the Komatsu D155A-6 vs Komatsu D275A-5R

    Ans.

    The Komatsu D275A-5R is more powerful. It is rated at 449 HP against the D155A-6's 360 HP, with a bigger 13.7 m³ blade against 9.4 m³. That extra power supports bigger cuts and higher output per pass.

    Ans.

    The Komatsu D155A-6 turns tighter. Its minimum turning radius is 2,140 mm against the D275A-5R's 3,900 mm. That makes it easier to manoeuvre in confined pit corners and smaller quarry benches.

    Ans.

    The Komatsu D275A-5R sinks less. Its ground bearing pressure is lower than the D155A-6's, even though it is the heavier machine. Wider tracks help spread its weight over a larger footprint.

    Ans.

    The Komatsu D275A-5R holds more fuel, at 840 litres against the D155A-6's 625 litres. That supports longer shifts before a refuelling stop on large mining sites.

    Ans.

    Yes, it can work well as a first step. It gives a contractor moving beyond construction-class equipment a practical way into mining-class ownership, with two ripper choices to match different ground conditions.

    Komatsu D155A-6 Vs Komatsu D275A-5R - Compare Price & Availability Across 600+ Locations in India

    Compare Komatsu D155A-6 Vs Komatsu D275A-5R price and availability across all major cities in India including Mumbai, Pune, Kolkata, Hyderabad, Chennai, Bengaluru, Delhi, Ahmedabad, Indore, Jaipur, Guwahati, and 600+ more locations.

    Maharashtra
    26 cities

    • Mumbai

    • Pune

    • Nagpur

    • Navi Mumbai

    • Thane

    • Nashik

    • Aurangabad (Chhatrapati Sambhajinagar)

    • Solapur

    • Kolhapur

    • Amravati

    • Chandrapur

    • Yavatmal

    • Latur

    • Dhule

    • Ahmednagar

    • Jalgaon

    • Raigad

    • Beed

    • Wardha

    • Palghar

    • Sangli

    • Ratnagiri

    • Satara

    • Nanded

    • Akola

    • Buldhana

    Gujarat
    21 cities

    • Ahmedabad

    • Gandhinagar

    • Surat

    • Vadodara

    • Rajkot

    • Bhavnagar

    • Jamnagar

    • Mundra

    • Kutch

    • Vapi

    • Anand

    • Mehsana

    • Morbi

    • Surendranagar

    • Amreli

    • Bharuch

    • Navsari

    • Dahej

    • Alang

    • Dholera

    • Gandhidham

    Goa
    5 cities

    • Panaji

    • Vasco da Gama

    • Margao

    • Calangute

    • Mormugao

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