Machine models

Komatsu PC30MRX-1, PC30R-8, and PC35R-8 specifications

Entries in this reference
Listing-entry count
3

Short answer

Komatsu PC30MRX-1, PC30R-8, and PC35R-8: excavators.

Selected configuration figures
Configuration	Documented field and quantity
PC30MRX-1	Gross Power 27.7 hp Operating Weight 7,275 lb
PC30R-8	Gross Power 27.7 hp Operating Weight 7,033 lb
PC35R-8	Gross Power 33 hp Operating Weight 7,865 lb

PC30MRX-1, PC30R-8, and PC35R-8 specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Komatsu	PC30MRX-1, PC30R-8, and PC35R-8	3	PC30MRX-1, PC30R-8, and PC35R-8

Boom/Stick Option (Hex) 1
Specification	PC30MRX-1	PC30R-8	PC35R-8
Shipping Length Of Unit	15.29 ft	15.92 ft	16.7 ft
Max Cutting Height	15.1 ft	16.08 ft	17 ft
Shipping Height Of Unit	8.08 ft	7.99 ft	8.2 ft
Max Loading Height	10.29 ft	11.21 ft	12.31 ft
Max Reach Along Ground	16.51 ft	15.92 ft	16.82 ft
Max Vertical Wall Digging Depth	8.32 ft	7.14 ft	7.67 ft
Max Digging Depth	9.31 ft	9.52 ft	10.34 ft
Boom/Stick Option (Hex) 1	Boom 7'3" (2220mm)/Stick 4'1" (1260mm)	Boom 7'11" (2420mm)/Stick 3'10" (1170mm)	2,590mm arm w/ stick 1350mm

Dimensions and weight
Specification	PC30MRX-1	PC30R-8	PC35R-8
Width To Outside Of Tracks	5.09 ft	4.99 ft	4.99 ft
Length Of Track On Ground	6.8 ft	5.29 ft	5.29 ft
Height To Top Of Cab	8.08 ft	8.29 ft	8.21 ft
Tail Swing Radius	2.81 ft	4.57 ft	4.65 ft
Removal Counterweight Clearance	1.84 ft	1.94 ft	1.91 ft

Specification	PC30MRX-1	PC30R-8
Ground Clearance	1.05 ft	0.99 ft

Undercarriage
Specification	PC30MRX-1	PC30R-8	PC35R-8
Shoe Size	11.82 in	11.82 in	11.82 in
Track Gauge	4.11 ft	4.01 ft	4 ft
Ground Pressure	4.8 psi	4.2 psi	4.12 psi
Max Travel Speed	2.86 mph	2.86 mph	2.86 mph

Specification	PC35R-8
Number Of Shoes Per Side	43
Number Of Track Rollers Per Side	4

Engine
Specification	PC30MRX-1	PC30R-8	PC35R-8
Number Of Cylinders	3	3	3
Engine Model	3D84E	3D84E	3D84E-3FA
Gross Power	27.7 hp	27.7 hp	33 hp
Power Measured @	2,500 rpm	2,700 rpm	2,500 rpm
Displacement	91.3 cu in	91.3 cu in	91.3 cu in

Specification	PC35R-8
Net Power	28.2 hp
Max Torque	66.4 lb-ft
Torque Measured @	1,800 rpm
Aspiration	Natural

Operational
Specification	PC30MRX-1	PC30R-8	PC35R-8
Operating Weight	7,275 lb	7,033 lb	7,865 lb
Fuel Capacity	11.1 gal	13.3 gal	13.7 gal
Hydraulic System Fluid Capacity	7.6 gal	8.8 gal	8.8 gal
Hydraulic System Relief Valve Pressure	3,770 psi	3,560 psi	3,626 psi
Hydraulic Pump Flow Capacity	19.4 gpm	22.5 gpm	26.6 gpm

Specification	PC35R-8
Cooling System Fluid Capacity	1.8 gal
Engine Oil Capacity	1.9 gal
Operating Voltage	12 V
Alternator Supplied Amperage	40 amps

Swing Mechanism
Specification	PC30MRX-1	PC30R-8	PC35R-8
Swing Speed	9.3 rpm	9 rpm	9 rpm

Buckets
Specification	PC30MRX-1	PC30R-8	PC35R-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
PC30MRX-1, PC30R-8, and PC35R-8	36

Ratios
Figure	PC30MRX-1	PC30R-8	PC35R-8
Engine horsepower per 1,000 lb of weight	3.8	3.9	3.6
Fuel tank per engine horsepower	0.40 gal	0.48 gal	0.49 gal
Hydraulic power from the listed pump flow and relief pressure	42.7 hp	46.7 hp	56.3 hp

Komatsu PC30MRX-1, PC30R-8, and PC35R-8: excavator

PC30MRX-1, PC30R-8, and PC35R-8: owner reports

Sources: 3 forum discussions about the Komatsu PC35 mini excavators (PC35MR-2, PC35MR-3); heavyequipmentforums.com.

Komatsu: Slow hydraulics and functions that fail when cold or hot.

PC30MRX-1, PC30R-8, and PC35R-8: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	excavator	Komatsu and the PC30 line that the PC30MRX-1, PC30R-8, PC35R-8 belongs to (no title names the exact model)	19

Topics named by those titles
Title topic	Titles
hydraulics	4
transmission and drive	4

Topic in the title	Threads	Share of matching threads
hydraulics	4	21%
transmission and drive	4	21%

Komatsu PC 30 Mr (Heavy Equipment Forums, 2023-11-29)
Komatsu Pc30 Hydraulic Failure (Heavy Equipment Forums, 2023-08-16)
Komatsu PC 35 R8 Turns Over But Wont Start (Heavy Equipment Forums, 2022-04-18)
Komatsu PC 30 3 Hydraulic Pump Problem (Heavy Equipment Forums, 2021-07-31)

PC30MRX-1, PC30R-8, and PC35R-8: dated market and recall observations — Dated listing search
Date	Listing index	Equipment class	Names queried	Result
2026-09-24	MachineryTrader (machinerytrader.com)	excavator	PC30MRX-1, PC30R-8, PC35R-8	No matching offers in this snapshot

Dated CPSC search
Date	Database	Names queried	Result
2026-09-24	U.S. Consumer Product Safety Commission	Komatsu; PC30MRX-1, PC30R-8, PC35R-8	No matching recall in the stated search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Komatsu PC30MRX-1 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Komatsu PC30R-8 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Komatsu PC35R-8 — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Komatsu PC30MRX-1, PC30R-8, and PC35R-8 — Heavy Equipment Forums. Observed 2026-09-24.
Forum threads	Forum threads: Forum threads read for the Komatsu PC35 mini excavators (PC35MR-2, PC35MR-3) — Heavyequipmentforums. 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 PC30MRX-1, PC30R-8, and PC35R-8: Configuration records

PC30MRX-1

Specification	Source figure
Boom/Stick Option (Hex) 1
Shipping Length Of Unit	15.29 ft
Max Cutting Height	15.1 ft
Shipping Height Of Unit	8.08 ft
Max Loading Height	10.29 ft
Max Reach Along Ground	16.51 ft
Max Vertical Wall Digging Depth	8.32 ft
Max Digging Depth	9.31 ft
Boom/Stick Option (Hex) 1	Boom 7'3" (2220mm)/Stick 4'1" (1260mm)
Dimensions and weight
Width To Outside Of Tracks	5.09 ft
Length Of Track On Ground	6.8 ft
Ground Clearance	1.05 ft
Height To Top Of Cab	8.08 ft
Tail Swing Radius	2.81 ft
Removal Counterweight Clearance	1.84 ft
Undercarriage
Shoe Size	11.82 in
Track Gauge	4.11 ft
Max Travel Speed	2.86 mph
Ground Pressure	4.8 psi
Engine
Engine Model	3D84E
Gross Power	27.7 hp
Power Measured @	2,500 rpm
Displacement	91.3 cu in
Number Of Cylinders	3
Operational
Operating Weight	7,275 lb
Fuel Capacity	11.1 gal
Hydraulic System Fluid Capacity	7.6 gal
Hydraulic System Relief Valve Pressure	3,770 psi
Hydraulic Pump Flow Capacity	19.4 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

Source

PC30R-8

Specification	Source figure
Boom/Stick Option (Hex) 1
Shipping Length Of Unit	15.92 ft
Max Cutting Height	16.08 ft
Shipping Height Of Unit	7.99 ft
Max Loading Height	11.21 ft
Max Reach Along Ground	15.92 ft
Max Vertical Wall Digging Depth	7.14 ft
Max Digging Depth	9.52 ft
Boom/Stick Option (Hex) 1	Boom 7'11" (2420mm)/Stick 3'10" (1170mm)
Dimensions and weight
Width To Outside Of Tracks	4.99 ft
Length Of Track On Ground	5.29 ft
Ground Clearance	0.99 ft
Height To Top Of Cab	8.29 ft
Tail Swing Radius	4.57 ft
Removal Counterweight Clearance	1.94 ft
Undercarriage
Shoe Size	11.82 in
Track Gauge	4.01 ft
Max Travel Speed	2.86 mph
Ground Pressure	4.2 psi
Engine
Engine Model	3D84E
Gross Power	27.7 hp
Power Measured @	2,700 rpm
Displacement	91.3 cu in
Number Of Cylinders	3
Operational
Operating Weight	7,033 lb
Fuel Capacity	13.3 gal
Hydraulic System Fluid Capacity	8.8 gal
Hydraulic System Relief Valve Pressure	3,560 psi
Hydraulic Pump Flow Capacity	22.5 gpm
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

PC35R-8

Specification	Source figure
Boom/Stick Option (Hex) 1
Shipping Length Of Unit	16.7 ft
Max Cutting Height	17 ft
Shipping Height Of Unit	8.2 ft
Max Loading Height	12.31 ft
Max Reach Along Ground	16.82 ft
Max Vertical Wall Digging Depth	7.67 ft
Max Digging Depth	10.34 ft
Boom/Stick Option (Hex) 1	2,590mm arm w/ stick 1350mm
Dimensions and weight
Width To Outside Of Tracks	4.99 ft
Length Of Track On Ground	5.29 ft
Height To Top Of Cab	8.21 ft
Tail Swing Radius	4.65 ft
Removal Counterweight Clearance	1.91 ft
Undercarriage
Shoe Size	11.82 in
Track Gauge	4 ft
Max Travel Speed	2.86 mph
Ground Pressure	4.12 psi
Number Of Shoes Per Side	43
Number Of Track Rollers Per Side	4
Engine
Engine Model	3D84E-3FA
Gross Power	33 hp
Power Measured @	2,500 rpm
Displacement	91.3 cu in
Number Of Cylinders	3
Net Power	28.2 hp
Torque Measured @	1,800 rpm
Aspiration	Natural
Max Torque	66.4 lb-ft
Operational
Operating Weight	7,865 lb
Fuel Capacity	13.7 gal
Hydraulic System Fluid Capacity	8.8 gal
Hydraulic System Relief Valve Pressure	3,626 psi
Hydraulic Pump Flow Capacity	26.6 gpm
Cooling System Fluid Capacity	1.8 gal
Engine Oil Capacity	1.9 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 PC30MRX-1, PC30R-8, PC35R-8

Boom/Stick Option (Hex) 1
Specification	PC30MRX-1	PC30R-8	PC35R-8
Shipping Length Of Unit	15.29 ft	15.92 ft	16.7 ft
Max Cutting Height	15.1 ft	16.08 ft	17 ft
Shipping Height Of Unit	8.08 ft	7.99 ft	8.2 ft
Max Loading Height	10.29 ft	11.21 ft	12.31 ft
Max Reach Along Ground	16.51 ft	15.92 ft	16.82 ft
Max Vertical Wall Digging Depth	8.32 ft	7.14 ft	7.67 ft
Max Digging Depth	9.31 ft	9.52 ft	10.34 ft
Boom/Stick Option (Hex) 1	Boom 7'3" (2220mm)/Stick 4'1" (1260mm)	Boom 7'11" (2420mm)/Stick 3'10" (1170mm)	2,590mm arm w/ stick 1350mm

Dimensions and weight
Specification	PC30MRX-1	PC30R-8	PC35R-8
Width To Outside Of Tracks	5.09 ft	4.99 ft	4.99 ft
Length Of Track On Ground	6.8 ft	5.29 ft	5.29 ft
Height To Top Of Cab	8.08 ft	8.29 ft	8.21 ft
Tail Swing Radius	2.81 ft	4.57 ft	4.65 ft
Removal Counterweight Clearance	1.84 ft	1.94 ft	1.91 ft

Undercarriage
Specification	PC30MRX-1	PC30R-8	PC35R-8
Shoe Size	11.82 in	11.82 in	11.82 in
Track Gauge	4.11 ft	4.01 ft	4 ft
Ground Pressure	4.8 psi	4.2 psi	4.12 psi
Max Travel Speed	2.86 mph	2.86 mph	2.86 mph

Engine
Specification	PC30MRX-1	PC30R-8	PC35R-8
Number Of Cylinders	3	3	3
Engine Model	3D84E	3D84E	3D84E-3FA
Gross Power	27.7 hp	27.7 hp	33 hp
Power Measured @	2,500 rpm	2,700 rpm	2,500 rpm
Displacement	91.3 cu in	91.3 cu in	91.3 cu in

Operational
Specification	PC30MRX-1	PC30R-8	PC35R-8
Operating Weight	7,275 lb	7,033 lb	7,865 lb
Fuel Capacity	11.1 gal	13.3 gal	13.7 gal
Hydraulic System Fluid Capacity	7.6 gal	8.8 gal	8.8 gal
Hydraulic System Relief Valve Pressure	3,770 psi	3,560 psi	3,626 psi
Hydraulic Pump Flow Capacity	19.4 gpm	22.5 gpm	26.6 gpm

Swing Mechanism
Specification	PC30MRX-1	PC30R-8	PC35R-8
Swing Speed	9.3 rpm	9 rpm	9 rpm

Buckets
Specification	PC30MRX-1	PC30R-8	PC35R-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: PC130-6, PC27MR-2/PC35MR-2, PC18MR-3–PC55MR-3.

Komatsu PC30MRX-1, PC30R-8, and PC35R-8 specifications

Komatsu PC30MRX-1, PC30R-8, and PC35R-8: excavator

PC30MRX-1, PC30R-8, and PC35R-8: owner reports

Sources for this page

Komatsu PC30MRX-1, PC30R-8, and PC35R-8: Configuration records