Machine models

Komatsu 830.3 and 860.3 specifications

Entries in this reference
Listing-entry count
2

Short answer

Komatsu 830.3 and 860.3: forwarders.

Selected configuration figures
Configuration	Documented field and quantity
830.3	Power 134 hp Operating Weight - 6wd 23,149 lb
860.3	Power 188 hp Operating Weight - 6wd 31,658 lb

830.3 and 860.3 specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Komatsu	830.3 and 860.3	2	830.3 and 860.3

Operational
Specification	830.3	860.3
Operating Weight - 6wd	23,149 lb	31,658 lb
Fuel Capacity	26.5 gal	42.3 gal
Hydraulic System Fluid Capacity	21.2 gal	26.5 gal
Operating Voltage	24 V	24 V
Alternator Supplied Amperage	110 amps	140 amps
Front/Rear Tire Size - 6wd	600/50x22.5	600/65x34, 600/55x26.5
Front/Rear Tire Size - 8wd	600/50x22.5	600/55x26.5, 600/55x26.5

Specification	860.3
Operating Weight - 8wd	34,965 lb

Transmission and speeds
Specification	830.3	860.3
Transmission Type	hydrostatic	Hydrostatic
Max Speed	15.6 mph	14.7 mph

Hydraulic
Specification	830.3	860.3
Pump Type	single circuit load sensing with variable piston pump	single circuit load sensing with variable piston pump
Flow Capacity	45 gpm	76.7 gpm
Relief Valve Pressure	3,410 psi	3,400 psi

Bunk
Specification	830.3	860.3
Load Weight - 6wd	43,762 lb	30,865 lb
Load Area	44.2 ft2	48.5 ft2

Specification	860.3
Load Weight - 8wd	30,865 lb

Variants — Source comparison annotation
Source guide	Differing-field count reported
830.3 and 860.3	29

Ratios
Figure	830.3	860.3
Engine horsepower per 1,000 lb of weight	5.8	5.9
Fuel tank per engine horsepower	0.20 gal	0.22 gal

Komatsu 830.3 and 860.3: forwarder

830.3 and 860.3: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	forwarder	Komatsu and the 830 line that the 830.3 belongs to (no title names the exact model)	9

Topics named by those titles
Title topic	Titles
parts and manuals	2

Topic in the title	Threads	Share of matching threads
parts and manuals	2	22%

Komatsu 830e Rear Dog Bone (Heavy Equipment Forums, 2025-11-09)
Komatsu 830e Strut Heights (Heavy Equipment Forums, 2024-12-28)
Komatsu 830e 5 Strut Heights (Heavy Equipment Forums, 2024-12-28)
Looking For Dresser Komatsu 830 Service Manual (Heavy Equipment Forums, 2024-08-15)

830.3 and 860.3: dated market and recall observations — Dated listing search
Date	Listing index	Equipment class	Names queried	Result
2026-09-24	MachineryTrader (machinerytrader.com)	forwarder	830.3, 860.3	No matching offers in this snapshot

Dated CPSC search
Date	Database	Names queried	Result
2026-09-24	U.S. Consumer Product Safety Commission	Komatsu; 830.3, 860.3	No matching recall in the stated search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Komatsu 830.3 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Komatsu 860.3 — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Komatsu 830.3 and 860.3 — Heavy Equipment Forums. 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.

830.3

Specification	Source figure
Dimensions and weight
Length	26.65 ft
Wheelbase	13.62 ft
Width Over Tires	8.7 ft
Height To Top Of Crane	11.57 ft
Ground Clearance	2.05 ft
Length Of Bunk Area	7.55 ft
Engine
Number Of Cylinders	4
Engine Model	44 CWA Tier 3
Power	134 hp
Torque	440 lb-ft
Power Measured @	2,200 rpm
Displacement	268.6 cu in
Torque Measured @	1,500 rpm
Aspiration	Turbo
Operational
Operating Weight - 6wd	23,149 lb
Fuel Capacity	26.5 gal
Hydraulic System Fluid Capacity	21.2 gal
Operating Voltage	24 V
Alternator Supplied Amperage	110 amps
Front/Rear Tire Size - 6wd	600/50x22.5
Front/Rear Tire Size - 8wd	600/50x22.5
Transmission and speeds
Transmission Type	hydrostatic
Max Speed	15.6 mph
Hydraulic
Pump Type	single circuit load sensing with variable piston pump
Flow Capacity	45 gpm
Relief Valve Pressure	3,410 psi
Bunk
Load Weight - 6wd	43,762 lb
Load Area	44.2 ft2
Crane
Crane Type	CRF 5
Max Reach	22.5 ft
Gross Lift Torque	54,600 lb-ft
Gross Slew Torque	16,150 lb-ft

860.3

Specification	Source figure
Dimensions and weight
Length	30.5 ft
Wheelbase	21.78 ft
Width Over Tires	8.94 ft
Height To Top Of Crane	12.5 ft
Ground Clearance	2.25 ft
Length Of Bunk Area	4.93 ft
Engine
Number Of Cylinders	6
Engine Model	66 CTA
Power	188 hp
Torque	594 lb-ft
Power Measured @	2,200 rpm
Displacement	402.8 cu in
Torque Measured @	1,500 rpm
Aspiration	Turbo
Operational
Operating Weight - 6wd	31,658 lb
Fuel Capacity	42.3 gal
Hydraulic System Fluid Capacity	26.5 gal
Operating Voltage	24 V
Alternator Supplied Amperage	140 amps
Front/Rear Tire Size - 6wd	600/65x34, 600/55x26.5
Front/Rear Tire Size - 8wd	600/55x26.5, 600/55x26.5
Operating Weight - 8wd	34,965 lb
Transmission and speeds
Transmission Type	Hydrostatic
Max Speed	14.7 mph
Hydraulic
Pump Type	single circuit load sensing with variable piston pump
Flow Capacity	76.7 gpm
Relief Valve Pressure	3,400 psi
Bunk
Load Weight - 6wd	30,865 lb
Load Area	48.5 ft2
Load Weight - 8wd	30,865 lb
Crane
Crane Type	CRF 10
Max Reach	25.6 ft
Gross Lift Torque	84,700 lb-ft
Gross Slew Torque	21,170 lb-ft