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PC360LC-10 to PC400LC-6 EXCEL: engines and arrangements

PC360LC-10: exhaust equipment and the fitted front

The PC360LC-10 brings a different maintenance question from the older EXCEL machines: its European exhaust package includes a regenerating KDPF. Cooled exhaust recirculation, variable-geometry turbocharging and crankcase ventilation accompany that filter. An oxidation-catalyst description for another Komatsu excavator is insufficient here.

Establish whether a seller's exhaust-service record actually covers the particulate filter before treating it as a complete aftertreatment history.

Komatsu separates gross ISO 14396 output from net ISO 9249 output: 271 hp and 257 hp respectively. Neither is hydraulic output. Its auxiliary circuit is optional in this edition, even though quick-coupler power is standard; the second auxiliary circuit is another option.

A machine can therefore have a coupler without the tool plumbing a hammer or rotating attachment needs. Inspect the circuit arrangement instead of inferring it from the coupler.

The narrow NLC undercarriage also has its own bucket limits. With a 3.2 m arm in material up to 1.8 t/m³, the brochure allows a 1.90 m³ bucket on the LC and 1.80 m³ on the NLC. These are configuration limits, not the capacity of every supplied bucket.

Copying the LC maximum onto an NLC quotation would erase a useful distinction.

Source: Komatsu PC360LC/NLC-10 original European brochure, engine, equipment and bucket schedules.

PC400-6 EXCEL: what the sandy-area specification covers

Specification X21SP970008 describes a particular EXCEL backhoe, with a 7,060 mm boom, 3,380 mm arm and 600 mm triple-grouser shoes. Its operating mass includes the operator, lubricants, hydraulic oil and a full fuel tank. An empty transport weight would answer a different question.

Retain the arrangement number with a lifting or haulage worksheet so its equipment assumptions remain visible.

The SA6D125E-2 in that document uses a mechanical all-speed governor. Its flywheel rating is 228 kW under SAE J1349; the separately printed DIN horsepower uses PS. The DIN and SAE numbers are not two engine options.

The bucket similarly carries different SAE and CECE heaped capacities. Match the standard when comparing an attachment listing with the original specification.

Its hydraulic refill entry is explicitly a system figure, whereas the PC360 document labels a tank refill. Those labels must survive a comparison. On the EXCEL drawing, crawler width and maximum overall width are separate dimensions as well.

A transport planner needs the widest relevant envelope, not whichever width happens to appear first in a sales table.

Source: Komatsu original PC400-6 EXCEL specification X21SP970008.
Earlier reference entries and original manufacturer corrections
Model and fieldEarlier entryManufacturer figure and scopeSource
PC360LC-10 Hydraulic System Fluid Capacity49.7 gal188 L hydraulic TANK refill, approximately49.7USgal; EuropeanPC360LC/NLC-10Original document
PC400-6 EXCEL Gross Power305.8 hp228 kW /306 hp NET SAEJ1349 at1,950rpm; X21SP970008 sandy-area arrangement, earlier305.8hp reference roundingOriginal document
Entries in this reference
Listing-entry count
5
Short answer

PC360LC-10 to PC400LC-6 EXCEL: engines and arrangements: full-size excavators.

Selected configuration figures
ConfigurationDocumented field and quantity
PC360LC-10
Gross Power
271 hp
Operating Weight
78,255 lb
PC400-6 EXCEL
Net Flywheel Power SAE J1349
228 kW /306 hp NET SAEJ1349 at1,950rpm; X21SP970008 sandy-area arrangement, earlier305.8hp reference rounding [source]
Operating Weight
91,271 lb
PC400HD-6
Gross Power
305.8 hp
Operating Weight
97,665 lb
PC400LC-6
Gross Power
305.8 hp
Operating Weight
93,917 lb
PC400LC-6 EXCEL
Gross Power
305.8 hp
Operating Weight
92,925 lb
PC360LC-10 to PC400LC-6 EXCEL specification matrix — Listing labels reported by the source
Publisher nameSource guideListing-entry countLabels named by the source
KomatsuPC360LC-10 to PC400LC-6 EXCEL5PC360LC-10, PC400-6 EXCEL, PC400HD-6, PC400LC-6, and PC400LC-6 EXCEL
Boom/Stick Option (Hex) 1
SpecificationPC360LC-10PC400-6 EXCELPC400HD-6PC400LC-6PC400LC-6 EXCEL
Max Reach Along Ground35.83 ft35.54 ft35.47 ft35.54 ft35.54 ft
Max Vertical Wall Digging Depth21.26 ft17.51 ft17.26 ft17.51 ft17.51 ft
Max Digging Depth24.22 ft22.27 ft22.02 ft22.27 ft22.27 ft
Boom/Stick Option (Hex) 1Boom 21'3" (6470mm)/Stick 10'5" (3185mm)Boom 23'2" (7060mm)/Stick 7'10" (2400mm)Boom 23'2" (7060mm)/Stick 7'10" (2400mm)Boom 23'2" (7060mm)/Stick 7'10" (2400mm)Boom 23'2" (7060mm)/Stick 7'10" (2400mm)
SpecificationPC400-6 EXCELPC400HD-6PC400LC-6PC400LC-6 EXCEL
Shipping Length Of Unit39.1 ft39.01 ft39.1 ft39.1 ft
Shipping Height Of Unit12.19 ft12.18 ft12.19 ft12.19 ft
Max Cutting Height33.78 ft34.16 ft33.78 ft33.78 ft
Max Loading Height23.15 ft23.53 ft23.15 ft23.15 ft
Dimensions and weight
SpecificationPC360LC-10PC400-6 EXCELPC400HD-6PC400LC-6PC400LC-6 EXCEL
Ground Clearance1.64 ft1.83 ft2.32 ft1.83 ft1.83 ft
Height To Top Of Cab10.37 ft10.72 ft11.16 ft10.72 ft10.72 ft
Width To Outside Of Tracks11.29 ft10.96 ft11.72 ft11.29 ft10.96 ft
Length Of Track On Ground13.23 ft13.19 ft14.28 ft14.28 ft14.28 ft
Tail Swing Radius11.31 ft11.49 ft11.49 ft11.49 ft11.49 ft
Removal Counterweight Clearance3.89 ft4.34 ft4.78 ft4.34 ft4.34 ft
Undercarriage
SpecificationPC360LC-10PC400-6 EXCELPC400HD-6PC400LC-6PC400LC-6 EXCEL
Track Gauge8.5 ft8.99 ft9.42 ft8.99 ft8.99 ft
Shoe Size33.47 in23.63 in27.56 in27.56 in23.63 in
Max Travel Speed3.42 mph3.42 mph3.42 mph3.42 mph3.42 mph
Ground Pressure8.31 psi11.2 psi9.7 psi9.2 psi10.7 psi
Engine
SpecificationPC360LC-10PC400-6 EXCELPC400HD-6PC400LC-6PC400LC-6 EXCEL
Number Of Cylinders66666
Engine ModelSAA6D114E-5SA6D125EM11SA6D125ESA6D125E
Gross Power271 hp228 kW /306 hp NET SAEJ1349 at1,950rpm; X21SP970008 sandy-area arrangement, earlier305.8hp reference rounding305.8 hp305.8 hp305.8 hp
Power Measured @1,950 rpm1,950 rpm1,950 rpm2,050 rpm1,950 rpm
Displacement540.1 cu in673.8 cu in659.1 cu in673.8 cu in673.8 cu in
Operational
SpecificationPC360LC-10PC400-6 EXCELPC400HD-6PC400LC-6PC400LC-6 EXCEL
Operating Weight78,255 lb91,271 lb97,665 lb93,917 lb92,925 lb
Fuel Capacity159.9 gal159.9 gal159.9 gal159.9 gal159.9 gal
Hydraulic System Fluid Capacity188 L hydraulic TANK refill, approximately49.7USgal; EuropeanPC360LC/NLC-1071.4 gal71.4 gal71.4 gal71.4 gal
Hydraulic System Relief Valve Pressure5,400 psi5,050 psi5,050 psi5,050 psi5,050 psi
Hydraulic Pump Flow Capacity141.3 gpm162.8 gpm162.8 gpm172.3 gpm162.8 gpm
Swing Mechanism
SpecificationPC360LC-10PC400-6 EXCELPC400HD-6PC400LC-6PC400LC-6 EXCEL
Swing Speed9.5 rpm9.3 rpm9.3 rpm9.3 rpm9.3 rpm
Buckets
SpecificationPC360LC-10PC400-6 EXCELPC400LC-6PC400LC-6 EXCEL
Reference Bucket Capacity1.8 yd32.4 yd32.4 yd32.4 yd3
SpecificationPC400-6 EXCELPC400LC-6PC400LC-6 EXCEL
Minimum Bucket Capacity1.8 yd31.8 yd31.8 yd3
Maximum Bucket Capacity2.9 yd32.9 yd32.9 yd3
Variants — Source comparison annotation
Source guideDiffering-field count reported
PC360LC-10 to PC400LC-6 EXCEL29
Ratios
FigurePC360LC-10PC400-6 EXCELPC400HD-6PC400LC-6PC400LC-6 EXCEL
Engine horsepower per 1,000 lb of weight3.53.43.13.33.3
Fuel tank per engine horsepower0.59 gal0.52 gal0.52 gal0.52 gal0.52 gal
Hydraulic power from the listed pump flow and relief pressure445.2 hp479.7 hp479.7 hp507.7 hp479.7 hp

PC360LC-10 to PC400LC-6 EXCEL: owner reports

Sources: 3 forum discussions about the Komatsu PC400 excavators (PC400-3, -5, LC-7); heavyequipmentforums.com.
PC360LC-10 to PC400LC-6 EXCEL: forum references — Forum-title search
Forum indexEquipment class queriedNames in the searchMatching titles
Heavy Equipment Forumsfull-size excavatorKomatsu and the PC400 6, PC400, PC400LC 6 line that the PC360LC-10, PC400-6 EXCEL, PC400HD-6, PC400LC-6 belongs to (no title names the exact model)38
Topics named by those titles
Title topicTitles
hydraulics5
overheating and cooling3
Topic in the titleThreadsShare of matching threads
hydraulics513%
overheating and cooling38%
PC360LC-10 to PC400LC-6 EXCEL: dated market and recall observations — Dated listing search
DateListing indexEquipment classNames queriedResult
2026-09-24MachineryTrader (machinerytrader.com)full-size excavatorPC360LC-10, PC400-6 EXCEL, PC400HD-6No matching offers in this snapshot
Dated CPSC search
DateDatabaseNames queriedResult
2026-09-24U.S. Consumer Product Safety CommissionKomatsu; PC360LC-10, PC400-6 EXCEL, PC400HD-6No matching recall in the stated search

Sources for this page

Evidence classDocument, classification and recorded date
Reference site
Reference site
Reference site
Reference site
Reference site
Forum threads
Forum threads
Federal agency data
Recorded observations — Classification in the linked listing
GuideAs-listed machine class
PC360LC-10 to PC400LC-6 EXCEL: engines and arrangementsfull-size excavator

PC360LC-10 to PC400LC-6 EXCEL: engines and arrangements: Configuration records

PC360LC-10
SpecificationSource figure
Boom/Stick Option (Hex) 1
Max Reach Along Ground35.83 ft
Max Vertical Wall Digging Depth21.26 ft
Max Digging Depth24.22 ft
Boom/Stick Option (Hex) 1Boom 21'3" (6470mm)/Stick 10'5" (3185mm)
Dimensions and weight
Ground Clearance1.64 ft
Height To Top Of Cab10.37 ft
Width To Outside Of Tracks11.29 ft
Length Of Track On Ground13.23 ft
Tail Swing Radius11.31 ft
Removal Counterweight Clearance3.89 ft
Undercarriage
Track Gauge8.5 ft
Shoe Size33.47 in
Max Travel Speed3.42 mph
Ground Pressure8.31 psi
Engine
Number Of Cylinders6
Engine ModelSAA6D114E-5
Gross Power271 hp
Power Measured @1,950 rpm
Displacement540.1 cu in
Operational
Operating Weight78,255 lb
Fuel Capacity159.9 gal
Hydraulic System Relief Valve Pressure5,400 psi
Hydraulic Pump Flow Capacity141.3 gpm
Swing Mechanism
Swing Speed9.5 rpm
Buckets
Reference Bucket Capacity1.8 yd3
Additional specifications
Hydraulic Tank Refill Capacity188 L hydraulic TANK refill, approximately49.7USgal; EuropeanPC360LC/NLC-10 [source]
Net Engine Output ISO9249192 kW /257 hp at1,950rpm, Europeanbrochure; grossISO14396202kW271hp [source]
European Exhaust SystemSAA6D114E-5;KDPFactive/passiveregeneration,cooledEGR/VGT/HPCR/KCCV [source]
Auxiliary Equipment ScopeAuxiliaryhydrauliccircuitoptional;quickcouplerpowersupplystandard;secondauxiliaryoptional;10attachmentmemories [source]
European LC Track Arrangement4,030mmtumblercentres/4,955mmoveralltrack;2,590mmgauge;3,440mmwidthwith850mmshoes;48shoes/eightlower/twocarrierrollersperside [source]
European LC Operating Weight Schedule35,600/35,980/36,360/36,550kg with600/700/800/850mmshoes;mono3.2marm/1,650kgbucket/operator/fullfuel; regionalreference78,255lbretainedseparately [source]
LC Versus NLC Bucket Limit3.2marm,materialupto1.8t/m3:LC1.90m3/1,375kgmaximum bucket;NLC1.80m3/1,300kg [source]

Source

PC400-6 EXCEL
SpecificationSource figure
Boom/Stick Option (Hex) 1
Shipping Length Of Unit39.1 ft
Shipping Height Of Unit12.19 ft
Max Cutting Height33.78 ft
Max Loading Height23.15 ft
Max Reach Along Ground35.54 ft
Max Vertical Wall Digging Depth17.51 ft
Max Digging Depth22.27 ft
Boom/Stick Option (Hex) 1Boom 23'2" (7060mm)/Stick 7'10" (2400mm)
Dimensions and weight
Ground Clearance1.83 ft
Height To Top Of Cab10.72 ft
Width To Outside Of Tracks10.96 ft
Length Of Track On Ground13.19 ft
Tail Swing Radius11.49 ft
Removal Counterweight Clearance4.34 ft
Undercarriage
Track Gauge8.99 ft
Shoe Size23.63 in
Max Travel Speed3.42 mph
Ground Pressure11.2 psi
Engine
Number Of Cylinders6
Engine ModelSA6D125E
Power Measured @1,950 rpm
Displacement673.8 cu in
Operational
Operating Weight91,271 lb
Fuel Capacity159.9 gal
Hydraulic System Fluid Capacity71.4 gal
Hydraulic System Relief Valve Pressure5,050 psi
Hydraulic Pump Flow Capacity162.8 gpm
Swing Mechanism
Swing Speed9.3 rpm
Buckets
Reference Bucket Capacity2.4 yd3
Minimum Bucket Capacity1.8 yd3
Maximum Bucket Capacity2.9 yd3
Additional specifications
Net Flywheel Power SAE J1349228 kW /306 hp NET SAEJ1349 at1,950rpm; X21SP970008 sandy-area arrangement, earlier305.8hp reference rounding [source]
Sandy Arrangement IdentityX21SP970008:SA6D125E-2,mechanicalall-speedgovernor;7,060mmboom/3,380mmarm/600mmtripleshoes [source]
Sandy Arrangement Bucket StandardsSAEheaped1.80m3/2.35yd3;CECEheaped1.60m3/2.09yd3 [source]
Sandy Arrangement Widths3,430mmoverallwidth;3,340mmcrawlerwidth;2,740mmgauge;4,020mmtrackonground/5,025mmoveralltrack [source]
Sandy Arrangement Refills270LhydraulicSYSTEM;47Lradiator/32Lengine/11.5Leachfinaldrive/21.5Lswing;fuel605L [source]

Source

PC400HD-6
SpecificationSource figure
Boom/Stick Option (Hex) 1
Shipping Length Of Unit39.01 ft
Shipping Height Of Unit12.18 ft
Max Cutting Height34.16 ft
Max Loading Height23.53 ft
Max Reach Along Ground35.47 ft
Max Vertical Wall Digging Depth17.26 ft
Max Digging Depth22.02 ft
Boom/Stick Option (Hex) 1Boom 23'2" (7060mm)/Stick 7'10" (2400mm)
Dimensions and weight
Ground Clearance2.32 ft
Height To Top Of Cab11.16 ft
Width To Outside Of Tracks11.72 ft
Length Of Track On Ground14.28 ft
Tail Swing Radius11.49 ft
Removal Counterweight Clearance4.78 ft
Undercarriage
Track Gauge9.42 ft
Shoe Size27.56 in
Max Travel Speed3.42 mph
Ground Pressure9.7 psi
Engine
Number Of Cylinders6
Engine ModelM11
Gross Power305.8 hp
Power Measured @1,950 rpm
Displacement659.1 cu in
Operational
Operating Weight97,665 lb
Fuel Capacity159.9 gal
Hydraulic System Fluid Capacity71.4 gal
Hydraulic System Relief Valve Pressure5,050 psi
Hydraulic Pump Flow Capacity162.8 gpm
Swing Mechanism
Swing Speed9.3 rpm

Source

PC400LC-6
SpecificationSource figure
Boom/Stick Option (Hex) 1
Shipping Length Of Unit39.1 ft
Shipping Height Of Unit12.19 ft
Max Cutting Height33.78 ft
Max Loading Height23.15 ft
Max Reach Along Ground35.54 ft
Max Vertical Wall Digging Depth17.51 ft
Max Digging Depth22.27 ft
Boom/Stick Option (Hex) 1Boom 23'2" (7060mm)/Stick 7'10" (2400mm)
Dimensions and weight
Ground Clearance1.83 ft
Height To Top Of Cab10.72 ft
Width To Outside Of Tracks11.29 ft
Length Of Track On Ground14.28 ft
Tail Swing Radius11.49 ft
Removal Counterweight Clearance4.34 ft
Undercarriage
Track Gauge8.99 ft
Shoe Size27.56 in
Max Travel Speed3.42 mph
Ground Pressure9.2 psi
Engine
Number Of Cylinders6
Engine ModelSA6D125E
Gross Power305.8 hp
Power Measured @2,050 rpm
Displacement673.8 cu in
Operational
Operating Weight93,917 lb
Fuel Capacity159.9 gal
Hydraulic System Fluid Capacity71.4 gal
Hydraulic System Relief Valve Pressure5,050 psi
Hydraulic Pump Flow Capacity172.3 gpm
Swing Mechanism
Swing Speed9.3 rpm
Buckets
Reference Bucket Capacity2.4 yd3
Minimum Bucket Capacity1.8 yd3
Maximum Bucket Capacity2.9 yd3

Source

PC400LC-6 EXCEL
SpecificationSource figure
Boom/Stick Option (Hex) 1
Shipping Length Of Unit39.1 ft
Shipping Height Of Unit12.19 ft
Max Cutting Height33.78 ft
Max Loading Height23.15 ft
Max Reach Along Ground35.54 ft
Max Vertical Wall Digging Depth17.51 ft
Max Digging Depth22.27 ft
Boom/Stick Option (Hex) 1Boom 23'2" (7060mm)/Stick 7'10" (2400mm)
Dimensions and weight
Ground Clearance1.83 ft
Height To Top Of Cab10.72 ft
Width To Outside Of Tracks10.96 ft
Length Of Track On Ground14.28 ft
Tail Swing Radius11.49 ft
Removal Counterweight Clearance4.34 ft
Undercarriage
Track Gauge8.99 ft
Shoe Size23.63 in
Max Travel Speed3.42 mph
Ground Pressure10.7 psi
Engine
Number Of Cylinders6
Engine ModelSA6D125E
Gross Power305.8 hp
Power Measured @1,950 rpm
Displacement673.8 cu in
Operational
Operating Weight92,925 lb
Fuel Capacity159.9 gal
Hydraulic System Fluid Capacity71.4 gal
Hydraulic System Relief Valve Pressure5,050 psi
Hydraulic Pump Flow Capacity162.8 gpm
Swing Mechanism
Swing Speed9.3 rpm
Buckets
Reference Bucket Capacity2.4 yd3
Minimum Bucket Capacity1.8 yd3
Maximum Bucket Capacity2.9 yd3

Source

Compare Komatsu PC360LC-10, PC400-6 EXCEL, PC400HD-6, PC400LC-6, PC400LC-6 EXCEL
Boom/Stick Option (Hex) 1
SpecificationPC360LC-10PC400-6 EXCELPC400HD-6PC400LC-6PC400LC-6 EXCEL
Max Reach Along Ground35.83 ft35.54 ft35.47 ft35.54 ft35.54 ft
Max Vertical Wall Digging Depth21.26 ft17.51 ft17.26 ft17.51 ft17.51 ft
Max Digging Depth24.22 ft22.27 ft22.02 ft22.27 ft22.27 ft
Boom/Stick Option (Hex) 1Boom 21'3" (6470mm)/Stick 10'5" (3185mm)Boom 23'2" (7060mm)/Stick 7'10" (2400mm)Boom 23'2" (7060mm)/Stick 7'10" (2400mm)Boom 23'2" (7060mm)/Stick 7'10" (2400mm)Boom 23'2" (7060mm)/Stick 7'10" (2400mm)
Dimensions and weight
SpecificationPC360LC-10PC400-6 EXCELPC400HD-6PC400LC-6PC400LC-6 EXCEL
Ground Clearance1.64 ft1.83 ft2.32 ft1.83 ft1.83 ft
Height To Top Of Cab10.37 ft10.72 ft11.16 ft10.72 ft10.72 ft
Width To Outside Of Tracks11.29 ft10.96 ft11.72 ft11.29 ft10.96 ft
Length Of Track On Ground13.23 ft13.19 ft14.28 ft14.28 ft14.28 ft
Tail Swing Radius11.31 ft11.49 ft11.49 ft11.49 ft11.49 ft
Removal Counterweight Clearance3.89 ft4.34 ft4.78 ft4.34 ft4.34 ft
Undercarriage
SpecificationPC360LC-10PC400-6 EXCELPC400HD-6PC400LC-6PC400LC-6 EXCEL
Track Gauge8.5 ft8.99 ft9.42 ft8.99 ft8.99 ft
Shoe Size33.47 in23.63 in27.56 in27.56 in23.63 in
Max Travel Speed3.42 mph3.42 mph3.42 mph3.42 mph3.42 mph
Ground Pressure8.31 psi11.2 psi9.7 psi9.2 psi10.7 psi
Engine
SpecificationPC360LC-10PC400-6 EXCELPC400HD-6PC400LC-6PC400LC-6 EXCEL
Number Of Cylinders66666
Engine ModelSAA6D114E-5SA6D125EM11SA6D125ESA6D125E
Measurement and equipment basis (specified in each cell)271 hp228 kW /306 hp NET SAEJ1349 at1,950rpm; X21SP970008 sandy-area arrangement, earlier305.8hp reference rounding [source]305.8 hp305.8 hp305.8 hp
Power Measured @1,950 rpm1,950 rpm1,950 rpm2,050 rpm1,950 rpm
Displacement540.1 cu in673.8 cu in659.1 cu in673.8 cu in673.8 cu in
Operational
SpecificationPC360LC-10PC400-6 EXCELPC400HD-6PC400LC-6PC400LC-6 EXCEL
Operating Weight78,255 lb91,271 lb97,665 lb93,917 lb92,925 lb
Fuel Capacity159.9 gal159.9 gal159.9 gal159.9 gal159.9 gal
Measurement and equipment basis (specified in each cell)188 L hydraulic TANK refill, approximately49.7USgal; EuropeanPC360LC/NLC-10 [source]71.4 gal71.4 gal71.4 gal71.4 gal
Hydraulic System Relief Valve Pressure5,400 psi5,050 psi5,050 psi5,050 psi5,050 psi
Hydraulic Pump Flow Capacity141.3 gpm162.8 gpm162.8 gpm172.3 gpm162.8 gpm
Swing Mechanism
SpecificationPC360LC-10PC400-6 EXCELPC400HD-6PC400LC-6PC400LC-6 EXCEL
Swing Speed9.5 rpm9.3 rpm9.3 rpm9.3 rpm9.3 rpm

More in Komatsu: PC400-6–PC450LC-6 MIGHTY specs, PC300HD-8–PC450LC-6, PC300LC-7–PC350LC-8: short tail versus quarry.