Machine models

Komatsu PC20 MRx and PC20MRX-1 specifications

Entries in this reference
Listing-entry count
2

Short answer

Komatsu PC20 MRx and PC20MRX-1: excavators.

Selected configuration figures
Configuration	Documented field and quantity
PC20 MRx	Net Power 19 hp Operating Weight 4,983 lb
PC20MRX-1	Gross Power 18.8 hp Operating Weight 5,049 lb

PC20 MRx and PC20MRX-1 specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Komatsu	PC20 MRx and PC20MRX-1	2	PC20 MRx and PC20MRX-1

Boom/Stick Option (Hex) 1
Specification	PC20 MRx
Shipping Length Of Unit	12.89 ft
Shipping Height Of Unit	7.9 ft

Specification	PC20 MRx	PC20MRX-1
Max Cutting Height	12.62 ft	12.62 ft
Max Loading Height	8.47 ft	8.47 ft
Max Reach Along Ground	13.51 ft	13.51 ft
Max Vertical Wall Digging Depth	6.63 ft	6.63 ft
Max Digging Depth	7.75 ft	7.75 ft
Boom/Stick Option (Hex) 1	arm w/ stick 930mm	Boom 5'11" (1809mm)/Stick 3'1" (930mm)

Specification	PC20MRX-1
Length Of Track On Ground	6.06 ft
Ground Clearance	0.94 ft
Removal Counterweight Clearance	1.78 ft

Engine
Specification	PC20 MRx	PC20MRX-1
Engine Model	3D74E-N3A	3D74E
Displacement	61.4 cu in	61.4 cu in

Specification	PC20MRX-1
Gross Power	18.8 hp

Operational
Specification	PC20 MRx	PC20MRX-1
Operating Weight	4,983 lb	5,049 lb
Fuel Capacity	6.7 gal	6.7 gal
Hydraulic System Fluid Capacity	5.6 gal	5.6 gal
Hydraulic System Relief Valve Pressure	3,046 psi	2,990 psi
Hydraulic Pump Flow Capacity	15.8 gpm	15.8 gpm

Specification	PC20 MRx
Cooling System Fluid Capacity	1.5 gal
Engine Oil Capacity	1.1 gal

Swing Mechanism
Specification	PC20 MRx	PC20MRX-1
Swing Speed	9.3 rpm	9.3 rpm

Variants — Source comparison annotation
Source guide	Differing-field count reported
PC20 MRx and PC20MRX-1	19

Ratios
Figure	PC20 MRx	PC20MRX-1
Engine horsepower per 1,000 lb of weight	3.8	3.7
Fuel tank per engine horsepower	0.35 gal	0.36 gal
Hydraulic power from the listed pump flow and relief pressure	28.1 hp	27.6 hp

Komatsu PC20 MRx and PC20MRX-1: excavator

PC20 MRx and PC20MRX-1: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	excavator	Komatsu and the PC20 line that the PC20 MRx, PC20MRX-1 belongs to (no title names the exact model)	14

Topics named by those titles
Title topic	Titles
tracks and undercarriage	2

Topic in the title	Threads	Share of matching threads
tracks and undercarriage	2	14%

Komatsu Pc20 Rexroth Valve (Heavy Equipment Forums, 2026-02-21)
Komatsu Pc20 6 Serial No 24614 Rhs Track Lever Stiff (Heavy Equipment Forums, 2024-03-02)
Komatsu PC 20 Mr 2 Idlers (Heavy Equipment Forums, 2018-09-01)
Grey Market Komatsu Pc20 Weak Then No Travel (Heavy Equipment Forums, 2017-08-17)

Used market for the PC20 MRx and PC20MRX-1 — Dated first-page listing snapshot
Observation date	Listing source	Equipment search	Listings
2026-09-24	MachineryTrader	Komatsu excavator	15

Model	Listed	Model years	Lowest asking	Highest asking	Median asking	Median hours
PC20 MRx	15	2000 to 2025	$9,500	$40,422	$11,300	None shown

PC20 MRx and PC20MRX-1: recall reference — Dated CPSC search
Search date	Database	Names queried	Search result
2026-09-24	U.S. Consumer Product Safety Commission	Komatsu together with the excavator PC20 MRx, PC20MRX-1	No matching recall in this search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Komatsu PC20 MRx — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Komatsu PC20MRX-1 — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Komatsu PC20 MRx and PC20MRX-1 — Heavy Equipment Forums. Observed 2026-09-24.
Used-market listings	Used-market listings: MachineryTrader listings for Komatsu PC20 — MachineryTrader. Observed 2026-09-24.
Federal agency data	Federal agency data: Recall database search for Komatsu — U.S. Consumer Product Safety Commission. Observed 2026-09-24.

PC20 MRx

Specification	Source figure
Boom/Stick Option (Hex) 1
Shipping Length Of Unit	12.89 ft
Max Cutting Height	12.62 ft
Shipping Height Of Unit	7.9 ft
Max Loading Height	8.47 ft
Max Reach Along Ground	13.51 ft
Max Vertical Wall Digging Depth	6.63 ft
Max Digging Depth	7.75 ft
Boom/Stick Option (Hex) 1	arm w/ stick 930mm
Dimensions and weight
Width To Outside Of Tracks	4.76 ft
Height To Top Of Cab	7.91 ft
Tail Swing Radius	2.63 ft
Undercarriage
Shoe Size	9.85 in
Track Gauge	3.94 ft
Max Travel Speed	2.99 mph
Ground Pressure	4.55 psi
Engine
Engine Model	3D74E-N3A
Power Measured @	2,600 rpm
Displacement	61.4 cu in
Net Power	19 hp
Aspiration	Natural
Operational
Operating Weight	4,983 lb
Fuel Capacity	6.7 gal
Hydraulic System Fluid Capacity	5.6 gal
Hydraulic System Relief Valve Pressure	3,046 psi
Hydraulic Pump Flow Capacity	15.8 gpm
Cooling System Fluid Capacity	1.5 gal
Engine Oil Capacity	1.1 gal
Swing Mechanism
Swing Speed	9.3 rpm

PC20MRX-1

Specification	Source figure
Boom/Stick Option (Hex) 1
Max Cutting Height	12.62 ft
Max Loading Height	8.47 ft
Max Reach Along Ground	13.51 ft
Max Vertical Wall Digging Depth	6.63 ft
Max Digging Depth	7.75 ft
Boom/Stick Option (Hex) 1	Boom 5'11" (1809mm)/Stick 3'1" (930mm)
Dimensions and weight
Width To Outside Of Tracks	4.76 ft
Length Of Track On Ground	6.06 ft
Ground Clearance	0.94 ft
Height To Top Of Cab	7.91 ft
Tail Swing Radius	2.63 ft
Removal Counterweight Clearance	1.78 ft
Undercarriage
Shoe Size	9.85 in
Track Gauge	3.94 ft
Max Travel Speed	2.99 mph
Ground Pressure	4.6 psi
Engine
Engine Model	3D74E
Gross Power	18.8 hp
Displacement	61.4 cu in
Operational
Operating Weight	5,049 lb
Fuel Capacity	6.7 gal
Hydraulic System Fluid Capacity	5.6 gal
Hydraulic System Relief Valve Pressure	2,990 psi
Hydraulic Pump Flow Capacity	15.8 gpm
Swing Mechanism
Swing Speed	9.3 rpm
Buckets
Reference Bucket Capacity	0.1 yd3
Minimum Bucket Capacity	0.1 yd3
Maximum Bucket Capacity	0.2 yd3

Compare Komatsu PC20 MRx, PC20MRX-1

Boom/Stick Option (Hex) 1
Specification	PC20 MRx	PC20MRX-1
Max Cutting Height	12.62 ft	12.62 ft
Max Loading Height	8.47 ft	8.47 ft
Max Reach Along Ground	13.51 ft	13.51 ft
Max Vertical Wall Digging Depth	6.63 ft	6.63 ft
Max Digging Depth	7.75 ft	7.75 ft
Boom/Stick Option (Hex) 1	arm w/ stick 930mm	Boom 5'11" (1809mm)/Stick 3'1" (930mm)

Engine
Specification	PC20 MRx	PC20MRX-1
Engine Model	3D74E-N3A	3D74E
Displacement	61.4 cu in	61.4 cu in

Operational
Specification	PC20 MRx	PC20MRX-1
Operating Weight	4,983 lb	5,049 lb
Fuel Capacity	6.7 gal	6.7 gal
Hydraulic System Fluid Capacity	5.6 gal	5.6 gal
Hydraulic System Relief Valve Pressure	3,046 psi	2,990 psi
Hydraulic Pump Flow Capacity	15.8 gpm	15.8 gpm

Swing Mechanism
Specification	PC20 MRx	PC20MRX-1
Swing Speed	9.3 rpm	9.3 rpm