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Komatsu PC40MR-2, PC45MR-3, and PC50MR-2 specifications

Entries in this reference
Listing-entry count
4
Short answer

Komatsu PC40MR-2, PC45MR-3, and PC50MR-2: excavators.

Selected configuration figures
ConfigurationDocumented field and quantity
PC40MR-2
Gross Power
39.4 hp
Operating Weight
10,560 lb
PC45MR-3
Net Power
38.2 hp
Operating Weight
10,571 lb
PC50MR-2
Net Power
39.4 hp
Operating Weight
11,110 lb
PC40MR-2, PC45MR-3, and PC50MR-2 specification matrix — Listing labels reported by the source
Publisher nameSource guideListing-entry countLabels named by the source
KomatsuPC40MR-2, PC45MR-3, and PC50MR-24PC40MR-2, PC45MR-3, PC45MR-3, and PC50MR-2
Dimensions and weight
SpecificationPC40MR-2PC45MR-3PC50MR-2
Width To Outside Of Tracks5.08 ft6.44 ft6.35 ft
Length Of Track On Ground6.57 ft6.57 ft6.57 ft
Ground Clearance1.19 ft1.19 ft1.17 ft
Height To Top Of Cab8.58 ft8.37 ft8.58 ft
SpecificationPC40MR-2PC45MR-3PC45MR-3PC50MR-2
Tail Swing Radius3.5 ft3.48 ft3.6 ft3.5 ft
SpecificationPC40MR-2PC45MR-3
Removal Counterweight Clearance2 ft2 ft
SpecificationPC45MR-3
Track Gauge5.1 ft
Bucket Offset Rh2.11 ft
Crawler Length8.27 ft
Boom Swing Angle Lh85 degrees
Boom Swing Angle Rh50 degrees
Bucket Offset Lh2.1 ft
Overall Height8.4 ft
Overall Width6.5 ft
Overall Length17.2 ft
Undercarriage
SpecificationPC40MR-2PC45MR-3PC50MR-2
Max Travel Speed2.9 mph2.86 mph2.9 mph
SpecificationPC40MR-2PC45MR-3PC45MR-3PC50MR-2
Number Of Carrier Rollers Per Side1111
SpecificationPC40MR-2PC45MR-3PC45MR-3PC50MR-2
Number Of Track Rollers Per Side4444
SpecificationPC45MR-3
Shoe Size15.75 in
Track Gauge5.12 ft
Drawbar Pull9,440 lb
Ground Pressure3.6 psi
Number Of Shoes Per Side39 (steel)
Adjustment Of The Track TensionGrease
Engine
SpecificationPC40MR-2PC45MR-3PC45MR-3PC50MR-2
Engine Model4D88E-54D88E-6Komatsu 4D88E–63D88E-5
SpecificationPC40MR-2
Gross Power39.4 hp
SpecificationPC40MR-2PC45MR-3PC45MR-3PC50MR-2
Power Measured @2.2 rpm2,400 rpm2,400 rpm2,350 rpm
SpecificationPC40MR-2PC45MR-3PC50MR-2
Displacement134 cu in134 cu in134 cu in
SpecificationPC45MR-3PC50MR-2
Net Power38.2 hp39.4 hp
Number Of Cylinders44
SpecificationPC45MR-3
Flywheel Horsepower38.3 hp
Piston Displacement133.6 cu in
Engine TypeDirect injection
Fan Drive TypeMechanical
SpecificationPC50MR-2
Max Torque102.6 lb-ft
Torque Measured @1,440 rpm
AspirationNatural
Operational
SpecificationPC40MR-2PC45MR-3PC50MR-2
Operating Weight10,560 lb10,571 lb11,110 lb
Fuel Capacity17.2 gal17.2 gal17.2 gal
Cooling System Fluid Capacity1.9 gal2.3 gal1.9 gal
Hydraulic System Fluid Capacity14.5 gal5.3 gal14.5 gal
Engine Oil Capacity2.1 gal2 gal2.1 gal
SpecificationPC40MR-2PC50MR-2
Operating Voltage12 V12 V
SpecificationPC45MR-3
Operational Voltage12 V
Hydraulic System Relief Valve Pressure3,840 psi
Hydraulic Pump Flow Capacity37.2 gpm
Boom Size8.7 ft
Boom TypeStandard
Arm Size4.6 ft
Arm Crowd Force – ISO2200 kgf
Digging Reach – Maximum18.9 ft
Maximum Reach @ Ground Level18.3 ft
Bucket Crowd Force – ISO3460 kgf
Swing Radius3.5 ft
Bucket Size – Kga Standard Gp0.2 yd3
Digging Depth – Maximum11 ft
Arm TypeStandard
SpecificationPC45MR-3PC50MR-2
Alternator Supplied Amperage40 amps40 amps
Swing Mechanism
SpecificationPC40MR-2PC45MR-3PC50MR-2
Swing Speed9 rpm9 rpm9 rpm
Buckets
SpecificationPC40MR-2PC50MR-2
Reference Bucket Capacity0.1 yd30.1 yd3
Minimum Bucket Capacity0.1 yd30.1 yd3
Maximum Bucket Capacity0.3 yd30.3 yd3
Boom/Stick Option (Hex) 1
SpecificationPC45MR-3PC50MR-2
Shipping Length Of Unit17.49 ft18.21 ft
Shipping Height Of Unit8.37 ft8.62 ft
Max Cutting Height18.8 ft19.51 ft
Max Loading Height13.33 ft13.88 ft
Max Reach Along Ground19.31 ft19.92 ft
Max Vertical Wall Digging Depth10.04 ft9.91 ft
Max Digging Depth12.05 ft12.47 ft
Boom/Stick Option (Hex) 1Arm 1695mm 5\"6\"Arm 1640mm
Electrical System
SpecificationPC45MR-3
Starter2.3 kW
Operation Voltage12 V
Battery72 Ah
Alternator40 A
Capacities
SpecificationPC45MR-3
Fuel Tank17.2 gal
Hydraulic Tank5.3 gal
Engine Oil2 gal
Coolant2.3 gal
Performance
SpecificationPC45MR-3
Travel Speed (Maximum)2.9 mph
Travel Speed (Minimum)1.8 mph
Maximum Traction Force9,436 lb
Gradeability30 degrees
Bucket Digging Force (ISO)7,628 lb
Arm Crowd Force (ISO)4,850 lb
Weights
SpecificationPC45MR-3
Operating Weight10,494 lb
Hydraulic System
SpecificationPC45MR-3
Type Of Hydraulic PumpVariable capacity x 2 gear x 1
Maximum Oil Flow53.5 x 2 + 33.8
Hydraulic Motor (Travel)Variable capacity x 2
Hydraulic Motor (Swing)fixed capacity x 1
Maximum Pressure Setting3,840 psi
Auxiliary Hydraulic Flow18.5 gpm
Blade
SpecificationPC45MR-3
Blade Width6.5 ft
Blade Height1.2 in
Drive System
SpecificationPC45MR-3
Drive MethodHydrostatic
Type Of Travel BrakeHydraulic lock type
Type Of Travel ShoeRubber
Variants — Source comparison annotation
Source guideDiffering-field count reported
PC40MR-2, PC45MR-3, and PC50MR-296
What changesPC40MR-2PC45MR-3PC45MR-3PC50MR-2
Tail Swing Radius3.5 ft3.48 ft3.6 ft3.5 ft
What changesPC40MR-2PC45MR-3PC45MR-3PC50MR-2
Engine Model4D88E-54D88E-6Komatsu 4D88E–63D88E-5
What changesPC40MR-2PC45MR-3PC45MR-3PC50MR-2
Power Measured @2.2 rpm2,400 rpm2,400 rpm2,350 rpm
Ratios
FigurePC40MR-2PC45MR-3PC50MR-2
Engine horsepower per 1,000 lb of weight3.73.63.5
Fuel tank per engine horsepower0.44 gal0.45 gal0.44 gal
FigurePC45MR-3
Hydraulic power from the listed pump flow and relief pressure83.3 hp

Komatsu PC40MR-2, PC45MR-3, and PC50MR-2: excavator

PC40MR-2, PC45MR-3, and PC50MR-2: forum references — Forum-title search
Forum indexEquipment class queriedNames in the searchMatching titles
Heavy Equipment ForumsexcavatorKomatsu and the PC40MR-2, PC45MR-3, PC50MR-234
Topics named by those titles
Title topicTitles
engine power and smoke3
hydraulics2
brakes and steering2
Topic in the titleThreadsShare of matching threads
engine power and smoke39%
hydraulics26%
brakes and steering26%
Used market for the PC40MR-2, PC45MR-3, and PC50MR-2 — Dated first-page listing snapshot
Observation dateListing sourceEquipment searchListings
2026-09-24MachineryTraderKomatsu excavator4
ModelListedModel yearsLowest askingHighest askingMedian askingMedian hours
PC40MR-212018$13,500$13,500$13,500None shown
PC50MR-232007 to 2023$10,500$32,900$19,9001,422
PC40MR-2, PC45MR-3, and PC50MR-2: recall reference — Dated CPSC search
Search dateDatabaseNames queriedSearch result
2026-09-24U.S. Consumer Product Safety CommissionKomatsu together with the excavator PC40MR-2, PC45MR-3, PC50MR-2No matching recall in this search

Sources for this page

Evidence classDocument, classification and recorded date
Reference site
Reference site
Reference site
Reference site
Forum threads
Used-market listings
Federal agency data

Komatsu PC40MR-2, PC45MR-3, and PC50MR-2: Configuration records

PC40MR-2
SpecificationSource figure
Dimensions and weight
Width To Outside Of Tracks5.08 ft
Length Of Track On Ground6.57 ft
Height To Top Of Cab8.58 ft
Tail Swing Radius3.5 ft
Ground Clearance1.19 ft
Removal Counterweight Clearance2 ft
Undercarriage
Number Of Track Rollers Per Side4
Number Of Carrier Rollers Per Side1
Engine
Engine Model4D88E-5
Power Measured @2.2 rpm
Displacement134 cu in
Gross Power39.4 hp
Operational
Fuel Capacity17.2 gal
Cooling System Fluid Capacity1.9 gal
Hydraulic System Fluid Capacity14.5 gal
Engine Oil Capacity2.1 gal
Operating Voltage12 V
Buckets
Reference Bucket Capacity0.1 yd3
Minimum Bucket Capacity0.1 yd3
Maximum Bucket Capacity0.3 yd3
Additional specifications
Max Travel Speed2.9 mph
Operating Weight10,560 lb
Swing Speed9 rpm

Source

PC45MR-3
SpecificationSource figure
Boom/Stick Option (Hex) 1
Max Vertical Wall Digging Depth10.04 ft
Dimensions and weight
Width To Outside Of Tracks6.44 ft
Length Of Track On Ground6.57 ft
Height To Top Of Cab8.37 ft
Tail Swing Radius3.48 ft
Ground Clearance1.19 ft
Removal Counterweight Clearance2 ft
Bucket Offset Rh2.11 ft
Crawler Length8.27 ft
Boom Swing Angle Lh85 degrees
Boom Swing Angle Rh50 degrees
Bucket Offset Lh2.1 ft
Overall Height8.4 ft
Overall Width6.5 ft
Overall Length17.2 ft
Undercarriage
Shoe Size15.75 in
Number Of Track Rollers Per Side4
Number Of Shoes Per Side39 (steel)
Number Of Carrier Rollers Per Side1
Drawbar Pull9,440 lb
Adjustment Of The Track TensionGrease
Engine
Engine Model4D88E-6
Net Power38.2 hp
Power Measured @2,400 rpm
Displacement134 cu in
Number Of Cylinders4
Flywheel Horsepower38.3 hp
Piston Displacement133.6 cu in
Engine TypeDirect injection
Fan Drive TypeMechanical
Operational
Fuel Capacity17.2 gal
Cooling System Fluid Capacity2.3 gal
Hydraulic System Fluid Capacity5.3 gal
Engine Oil Capacity2 gal
Hydraulic System Relief Valve Pressure3,840 psi
Hydraulic Pump Flow Capacity37.2 gpm
Alternator Supplied Amperage40 amps
Operational Voltage12 V
Boom Size8.7 ft
Boom TypeStandard
Arm Size4.6 ft
Arm Crowd Force – ISO2200 kgf
Digging Reach – Maximum18.9 ft
Maximum Reach @ Ground Level18.3 ft
Bucket Crowd Force – ISO3460 kgf
Swing Radius3.5 ft
Bucket Size – Kga Standard Gp0.2 yd3
Digging Depth – Maximum11 ft
Arm TypeStandard
Electrical System
Starter2.3 kW
Operation Voltage12 V
Battery72 Ah
Alternator40 A
Capacities
Fuel Tank17.2 gal
Hydraulic Tank5.3 gal
Engine Oil2 gal
Coolant2.3 gal
Performance
Travel Speed (Maximum)2.9 mph
Travel Speed (Minimum)1.8 mph
Maximum Traction Force9,436 lb
Gradeability30 degrees
Bucket Digging Force (ISO)7,628 lb
Arm Crowd Force (ISO)4,850 lb
Hydraulic System
Type Of Hydraulic PumpVariable capacity x 2 gear x 1
Maximum Oil Flow53.5 x 2 + 33.8
Hydraulic Motor (Travel)Variable capacity x 2
Hydraulic Motor (Swing)fixed capacity x 1
Maximum Pressure Setting3,840 psi
Auxiliary Hydraulic Flow18.5 gpm
Blade
Blade Width6.5 ft
Blade Height1.2 in
Drive System
Drive MethodHydrostatic
Type Of Travel BrakeHydraulic lock type
Type Of Travel ShoeRubber
Additional specifications
Shipping Length Of Unit17.49 ft
Max Cutting Height18.8 ft
Shipping Height Of Unit8.37 ft
Max Loading Height13.33 ft
Max Reach Along Ground19.31 ft
Max Digging Depth12.05 ft
Boom/Stick Option (Hex) 1Arm 1695mm 5"6"
Track Gauge5.1 ft
Ground Pressure3.6 psi
Max Travel Speed2.86 mph
Operating Weight10,571 lb
Swing Speed9 rpm
PC50MR-2
SpecificationSource figure
Boom/Stick Option (Hex) 1
Max Vertical Wall Digging Depth9.91 ft
Dimensions and weight
Width To Outside Of Tracks6.35 ft
Length Of Track On Ground6.57 ft
Height To Top Of Cab8.58 ft
Tail Swing Radius3.5 ft
Ground Clearance1.17 ft
Undercarriage
Number Of Track Rollers Per Side4
Number Of Carrier Rollers Per Side1
Engine
Engine Model3D88E-5
Net Power39.4 hp
Power Measured @2,350 rpm
Displacement134 cu in
AspirationNatural
Max Torque102.6 lb-ft
Number Of Cylinders4
Torque Measured @1,440 rpm
Operational
Fuel Capacity17.2 gal
Cooling System Fluid Capacity1.9 gal
Hydraulic System Fluid Capacity14.5 gal
Engine Oil Capacity2.1 gal
Operating Voltage12 V
Alternator Supplied Amperage40 amps
Buckets
Reference Bucket Capacity0.1 yd3
Minimum Bucket Capacity0.1 yd3
Maximum Bucket Capacity0.3 yd3
Additional specifications
Shipping Length Of Unit18.21 ft
Max Cutting Height19.51 ft
Shipping Height Of Unit8.62 ft
Max Loading Height13.88 ft
Max Reach Along Ground19.92 ft
Max Digging Depth12.47 ft
Boom/Stick Option (Hex) 1Arm 1640mm
Max Travel Speed2.9 mph
Operating Weight11,110 lb
Swing Speed9 rpm

Source

Compare Komatsu PC40MR-2, PC45MR-3, PC45MR-3, PC50MR-2
Undercarriage
SpecificationPC40MR-2PC45MR-3PC45MR-3PC50MR-2
Number Of Carrier Rollers Per Side1111
Number Of Track Rollers Per Side4444
Engine
SpecificationPC40MR-2PC45MR-3PC45MR-3PC50MR-2
Power Measured @2.2 rpm2,400 rpm2,400 rpm2,350 rpm

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