Machine models

Komatsu PC20R-8, PC25R-8, and PC27R-8 specifications

Entries in this reference
Listing-entry count
3

Short answer

Komatsu PC20R-8, PC25R-8, and PC27R-8: excavators.

Selected configuration figures
Configuration	Documented field and quantity
PC20R-8	Gross Power 26.7 hp Operating Weight 5,589 lb
PC25R-8	Gross Power 23.8 hp Operating Weight 5,842 lb
PC27R-8	Gross Power 29.4 hp Operating Weight 6,548 lb

PC20R-8, PC25R-8, and PC27R-8 specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Komatsu	PC20R-8, PC25R-8, and PC27R-8	3	PC20R-8, PC25R-8, and PC27R-8

Boom/Stick Option (Hex) 1
Specification	PC20R-8	PC25R-8	PC27R-8
Shipping Length Of Unit	13.94 ft	14.87 ft	14.85 ft
Max Cutting Height	13.22 ft	14.31 ft	14.44 ft
Shipping Height Of Unit	8.03 ft	8.04 ft	8.17 ft
Max Loading Height	9.07 ft	10.09 ft	10.24 ft
Max Reach Along Ground	13.94 ft	14.77 ft	15.42 ft
Max Vertical Wall Digging Depth	6.23 ft	7.06 ft	7.17 ft
Max Digging Depth	7.71 ft	8.37 ft	8.7 ft
Boom/Stick Option (Hex) 1	Standard	Boom 7'3" (2220mm)/Stick 3'8" (1120mm)	arm w/ stick 1200mm

Dimensions and weight
Specification	PC20R-8	PC25R-8	PC27R-8
Width To Outside Of Tracks	4.5 ft	4.93 ft	4.93 ft
Length Of Track On Ground	4.4 ft	4.88 ft	4.88 ft
Height To Top Of Cab	8.03 ft	8.03 ft	8.17 ft
Tail Swing Radius	4.07 ft	4.11 ft	4.07 ft
Removal Counterweight Clearance	1.79 ft	1.89 ft	1.92 ft

Specification	PC25R-8
Ground Clearance	0.96 ft

Undercarriage
Specification	PC20R-8	PC25R-8	PC27R-8
Shoe Size	9.85 in	11.82 in	11.82 in
Track Gauge	3.67 ft	3.94 ft	3.94 ft
Ground Pressure	1.6 psi	3.8 psi	4.41 psi
Max Travel Speed	2.68 mph	2.99 mph	2.74 mph

Specification	PC20R-8	PC27R-8
Number Of Shoes Per Side	38	40
Number Of Track Rollers Per Side	3	4

Engine
Specification	PC20R-8	PC25R-8	PC27R-8
Number Of Cylinders	3	3	3
Engine Model	3D78AE-3FA	3D82AE	3D82AE-3FA
Gross Power	26.7 hp	23.8 hp	29.4 hp
Power Measured @	2,600 rpm	2,400 rpm	2,600 rpm
Displacement	73.5 cu in	81.2 cu in	81.2 cu in

Specification	PC20R-8	PC27R-8
Net Power	23.3 hp	26 hp
Max Torque	53.5 lb-ft	60.2 lb-ft
Torque Measured @	1,600 rpm	1,600 rpm
Aspiration	Natural	Natural

Operational
Specification	PC20R-8	PC25R-8	PC27R-8
Operating Weight	5,589 lb	5,842 lb	6,548 lb
Fuel Capacity	9.3 gal	9.3 gal	9.3 gal
Hydraulic System Fluid Capacity	7.7 gal	7.7 gal	7.7 gal
Hydraulic System Relief Valve Pressure	3,046 psi	2,990 psi	3,046 psi
Hydraulic Pump Flow Capacity	15.8 gpm	17.5 gpm	20.2 gpm

Specification	PC20R-8	PC27R-8
Cooling System Fluid Capacity	1.1 gal	1.1 gal
Engine Oil Capacity	1 gal	1.4 gal
Operating Voltage	12 V	12 V
Alternator Supplied Amperage	40 amps	40 amps

Swing Mechanism
Specification	PC20R-8	PC25R-8	PC27R-8
Swing Speed	9 rpm	8.9 rpm	9 rpm

Buckets
Specification	PC20R-8	PC25R-8	PC27R-8
Reference Bucket Capacity	0.1 yd3	0.2 yd3	0.2 yd3
Minimum Bucket Capacity	0.1 yd3	0.1 yd3	0.1 yd3
Maximum Bucket Capacity	0.2 yd3	0.2 yd3	0.2 yd3

Variants — Source comparison annotation
Source guide	Differing-field count reported
PC20R-8, PC25R-8, and PC27R-8	37

Ratios
Figure	PC20R-8	PC25R-8	PC27R-8
Engine horsepower per 1,000 lb of weight	4.2	4.1	4.0
Fuel tank per engine horsepower	0.40 gal	0.39 gal	0.36 gal
Hydraulic power from the listed pump flow and relief pressure	28.1 hp	30.5 hp	35.9 hp

Komatsu PC20R-8, PC25R-8, and PC27R-8: excavator

PC20R-8, PC25R-8, and PC27R-8: owner reports

Sources: 3 forum discussions about the Komatsu PC27R-8 mini excavators; heavyequipmentforums.com.

Komatsu: Overheating and hydraulics.

PC20R-8, PC25R-8, and PC27R-8: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	excavator	Komatsu and the PC20, PC25 line that the PC20R-8, PC25R-8, PC27R-8 belongs to (no title names the exact model)	17

Topics named by those titles
Title topic	Titles
hydraulics	3

Topic in the title	Threads	Share of matching threads
hydraulics	3	18%

Pc27r 8 Komatsu Overheats When Using Bucket Hydraulics (Heavy Equipment Forums, 2026-02-27)
Komatsu Pc20 Rexroth Valve (Heavy Equipment Forums, 2026-02-21)
Komatsu Pc27r 8 Hydraulic Problem (Heavy Equipment Forums, 2026-01-07)
Komatsu Pc27r 8 1997 Hydraulic Issue (Heavy Equipment Forums, 2025-05-11)

Used market for the PC20R-8, PC25R-8, and PC27R-8 — Dated first-page listing snapshot
Observation date	Listing source	Equipment search	Listings
2026-09-24	MachineryTrader	Komatsu excavator	1

Model	Listed	Model years	Lowest asking	Highest asking	Median asking	Median hours
PC20R-8	1	2000	None shown	None shown	None shown	None shown

PC20R-8, PC25R-8, and PC27R-8: 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 PC20R-8, PC25R-8, PC27R-8	No matching recall in this search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Komatsu PC20R-8 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Komatsu PC25R-8 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Komatsu PC27R-8 — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Komatsu PC20R-8, PC25R-8, and PC27R-8 — Heavy Equipment Forums. Observed 2026-09-24.
Forum threads	Forum threads: Forum threads read for the Komatsu PC27R-8 mini excavators — Heavyequipmentforums. Observed 2026-09-24.
Used-market listings	Used-market listings: MachineryTrader listings for Komatsu PC20R-8 — 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.

Komatsu PC20R-8, PC25R-8, and PC27R-8 questions

Dated listing search without advertised prices
Date	Listing index	Equipment class	Names queried	Listings	Price observation
2026-09-24	MachineryTrader	excavator	PC20R-8	1	No prices shown in this snapshot

Komatsu PC20R-8, PC25R-8, and PC27R-8: Configuration records

PC20R-8

Specification	Source figure
Boom/Stick Option (Hex) 1
Shipping Length Of Unit	13.94 ft
Max Cutting Height	13.22 ft
Shipping Height Of Unit	8.03 ft
Max Loading Height	9.07 ft
Max Reach Along Ground	13.94 ft
Max Vertical Wall Digging Depth	6.23 ft
Max Digging Depth	7.71 ft
Boom/Stick Option (Hex) 1	Standard
Dimensions and weight
Width To Outside Of Tracks	4.5 ft
Length Of Track On Ground	4.4 ft
Height To Top Of Cab	8.03 ft
Tail Swing Radius	4.07 ft
Removal Counterweight Clearance	1.79 ft
Undercarriage
Shoe Size	9.85 in
Track Gauge	3.67 ft
Max Travel Speed	2.68 mph
Ground Pressure	1.6 psi
Number Of Shoes Per Side	38
Number Of Track Rollers Per Side	3
Engine
Engine Model	3D78AE-3FA
Gross Power	26.7 hp
Power Measured @	2,600 rpm
Displacement	73.5 cu in
Number Of Cylinders	3
Net Power	23.3 hp
Torque Measured @	1,600 rpm
Aspiration	Natural
Max Torque	53.5 lb-ft
Operational
Operating Weight	5,589 lb
Fuel Capacity	9.3 gal
Hydraulic System Fluid Capacity	7.7 gal
Hydraulic System Relief Valve Pressure	3,046 psi
Hydraulic Pump Flow Capacity	15.8 gpm
Cooling System Fluid Capacity	1.1 gal
Engine Oil Capacity	1 gal
Operating Voltage	12 V
Alternator Supplied Amperage	40 amps
Swing Mechanism
Swing Speed	9 rpm
Buckets
Reference Bucket Capacity	0.1 yd3
Minimum Bucket Capacity	0.1 yd3
Maximum Bucket Capacity	0.2 yd3

Source

PC25R-8

Specification	Source figure
Boom/Stick Option (Hex) 1
Shipping Length Of Unit	14.87 ft
Max Cutting Height	14.31 ft
Shipping Height Of Unit	8.04 ft
Max Loading Height	10.09 ft
Max Reach Along Ground	14.77 ft
Max Vertical Wall Digging Depth	7.06 ft
Max Digging Depth	8.37 ft
Boom/Stick Option (Hex) 1	Boom 7'3" (2220mm)/Stick 3'8" (1120mm)
Dimensions and weight
Width To Outside Of Tracks	4.93 ft
Length Of Track On Ground	4.88 ft
Ground Clearance	0.96 ft
Height To Top Of Cab	8.03 ft
Tail Swing Radius	4.11 ft
Removal Counterweight Clearance	1.89 ft
Undercarriage
Shoe Size	11.82 in
Track Gauge	3.94 ft
Max Travel Speed	2.99 mph
Ground Pressure	3.8 psi
Engine
Engine Model	3D82AE
Gross Power	23.8 hp
Power Measured @	2,400 rpm
Displacement	81.2 cu in
Number Of Cylinders	3
Operational
Operating Weight	5,842 lb
Fuel Capacity	9.3 gal
Hydraulic System Fluid Capacity	7.7 gal
Hydraulic System Relief Valve Pressure	2,990 psi
Hydraulic Pump Flow Capacity	17.5 gpm
Swing Mechanism
Swing Speed	8.9 rpm
Buckets
Reference Bucket Capacity	0.2 yd3
Minimum Bucket Capacity	0.1 yd3
Maximum Bucket Capacity	0.2 yd3

Source

PC27R-8

Specification	Source figure
Boom/Stick Option (Hex) 1
Shipping Length Of Unit	14.85 ft
Max Cutting Height	14.44 ft
Shipping Height Of Unit	8.17 ft
Max Loading Height	10.24 ft
Max Reach Along Ground	15.42 ft
Max Vertical Wall Digging Depth	7.17 ft
Max Digging Depth	8.7 ft
Boom/Stick Option (Hex) 1	arm w/ stick 1200mm
Dimensions and weight
Width To Outside Of Tracks	4.93 ft
Length Of Track On Ground	4.88 ft
Height To Top Of Cab	8.17 ft
Tail Swing Radius	4.07 ft
Removal Counterweight Clearance	1.92 ft
Undercarriage
Shoe Size	11.82 in
Track Gauge	3.94 ft
Max Travel Speed	2.74 mph
Ground Pressure	4.41 psi
Number Of Shoes Per Side	40
Number Of Track Rollers Per Side	4
Engine
Engine Model	3D82AE-3FA
Gross Power	29.4 hp
Power Measured @	2,600 rpm
Displacement	81.2 cu in
Number Of Cylinders	3
Net Power	26 hp
Torque Measured @	1,600 rpm
Aspiration	Natural
Max Torque	60.2 lb-ft
Operational
Operating Weight	6,548 lb
Fuel Capacity	9.3 gal
Hydraulic System Fluid Capacity	7.7 gal
Hydraulic System Relief Valve Pressure	3,046 psi
Hydraulic Pump Flow Capacity	20.2 gpm
Cooling System Fluid Capacity	1.1 gal
Engine Oil Capacity	1.4 gal
Operating Voltage	12 V
Alternator Supplied Amperage	40 amps
Swing Mechanism
Swing Speed	9 rpm
Buckets
Reference Bucket Capacity	0.2 yd3
Minimum Bucket Capacity	0.1 yd3
Maximum Bucket Capacity	0.2 yd3

Source

Compare Komatsu PC20R-8, PC25R-8, PC27R-8

Boom/Stick Option (Hex) 1
Specification	PC20R-8	PC25R-8	PC27R-8
Shipping Length Of Unit	13.94 ft	14.87 ft	14.85 ft
Max Cutting Height	13.22 ft	14.31 ft	14.44 ft
Shipping Height Of Unit	8.03 ft	8.04 ft	8.17 ft
Max Loading Height	9.07 ft	10.09 ft	10.24 ft
Max Reach Along Ground	13.94 ft	14.77 ft	15.42 ft
Max Vertical Wall Digging Depth	6.23 ft	7.06 ft	7.17 ft
Max Digging Depth	7.71 ft	8.37 ft	8.7 ft
Boom/Stick Option (Hex) 1	Standard	Boom 7'3" (2220mm)/Stick 3'8" (1120mm)	arm w/ stick 1200mm

Dimensions and weight
Specification	PC20R-8	PC25R-8	PC27R-8
Width To Outside Of Tracks	4.5 ft	4.93 ft	4.93 ft
Length Of Track On Ground	4.4 ft	4.88 ft	4.88 ft
Height To Top Of Cab	8.03 ft	8.03 ft	8.17 ft
Tail Swing Radius	4.07 ft	4.11 ft	4.07 ft
Removal Counterweight Clearance	1.79 ft	1.89 ft	1.92 ft

Undercarriage
Specification	PC20R-8	PC25R-8	PC27R-8
Shoe Size	9.85 in	11.82 in	11.82 in
Track Gauge	3.67 ft	3.94 ft	3.94 ft
Ground Pressure	1.6 psi	3.8 psi	4.41 psi
Max Travel Speed	2.68 mph	2.99 mph	2.74 mph

Engine
Specification	PC20R-8	PC25R-8	PC27R-8
Number Of Cylinders	3	3	3
Engine Model	3D78AE-3FA	3D82AE	3D82AE-3FA
Gross Power	26.7 hp	23.8 hp	29.4 hp
Power Measured @	2,600 rpm	2,400 rpm	2,600 rpm
Displacement	73.5 cu in	81.2 cu in	81.2 cu in

Operational
Specification	PC20R-8	PC25R-8	PC27R-8
Operating Weight	5,589 lb	5,842 lb	6,548 lb
Fuel Capacity	9.3 gal	9.3 gal	9.3 gal
Hydraulic System Fluid Capacity	7.7 gal	7.7 gal	7.7 gal
Hydraulic System Relief Valve Pressure	3,046 psi	2,990 psi	3,046 psi
Hydraulic Pump Flow Capacity	15.8 gpm	17.5 gpm	20.2 gpm

Swing Mechanism
Specification	PC20R-8	PC25R-8	PC27R-8
Swing Speed	9 rpm	8.9 rpm	9 rpm

Buckets
Specification	PC20R-8	PC25R-8	PC27R-8
Reference Bucket Capacity	0.1 yd3	0.2 yd3	0.2 yd3
Minimum Bucket Capacity	0.1 yd3	0.1 yd3	0.1 yd3
Maximum Bucket Capacity	0.2 yd3	0.2 yd3	0.2 yd3

More in Komatsu: PC27MR-2/PC35MR-2, PC20-2/PC30-1, PC30MRX-1/PC30R-8/PC35R-8 specs.

Komatsu PC20R-8, PC25R-8, and PC27R-8 specifications

Komatsu PC20R-8, PC25R-8, and PC27R-8: excavator

PC20R-8, PC25R-8, and PC27R-8: owner reports

Sources for this page

Komatsu PC20R-8, PC25R-8, and PC27R-8 questions

Komatsu PC20R-8, PC25R-8, and PC27R-8: Configuration records