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Hyundai R55-7 and R55W-7 specifications

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Listing-entry count
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Short answer

Hyundai R55-7 and R55W-7: excavators.

Selected configuration figures
ConfigurationDocumented field and quantity
R55-7
Gross Power
53 hp
Operating Weight
12,570 lb
R55W-7
Gross Power
57 hp
Operating Weight
12,015 lb
R55-7 and R55W-7 specification matrix — Listing labels reported by the source
Publisher nameSource guideListing-entry countLabels named by the source
HyundaiR55-7 and R55W-72R55-7 and R55W-7
Boom/Stick Option (Hex) 1
SpecificationR55-7
Max Cutting Height18.97 ft
Max Loading Height13.29 ft
Max Reach Along Ground19.72 ft
Max Vertical Wall Digging Depth10.5 ft
Max Digging Depth12.54 ft
Boom/Stick Option (Hex) 1Boom 9'10" (3000mm)/Stick 5'3" (1600mm)
Dimensions and weight
SpecificationR55-7
Width To Outside Of Tracks6.3 ft
Length Of Track On Ground6.53 ft
SpecificationR55-7R55W-7
Ground Clearance1.25 ft0.96 ft
Height To Top Of Cab8.37 ft9.36 ft
Tail Swing Radius5.42 ft5.42 ft
SpecificationR55W-7
Wheelbase6.89 ft
Overall Width6.32 in
Upper Structure Clearance3.24 ft
Undercarriage
SpecificationR55-7
Shoe Size15.75 in
Track Gauge4.93 ft
Number Of Track Rollers Per Side5
Number Of Shoes Per Side40
Max Travel Speed2.55 mph
Ground Pressure4.7 psi
Number Of Carrier Rollers Per Side1
Drawbar Pull11,700 lb
Engine
SpecificationR55-7R55W-7
Number Of Cylinders44
Engine Model4TNV94L4TNV94L
Gross Power53 hp57 hp
Net Power52 hp55 hp
Power Measured @2,200 rpm2,400 rpm
Displacement186.4 cu in186 cu in
Torque Measured @1,400 rpm1,440 rpm
SpecificationR55-7
Max Torque149 lb-ft
SpecificationR55W-7
Net Torque149 lb-ft
Operational
SpecificationR55-7R55W-7
Operating Weight12,570 lb12,015 lb
Fuel Capacity31.8 gal31.8 gal
Cooling System Fluid Capacity2.7 gal2.7 gal
Hydraulic System Fluid Capacity31.8 gal18.5 gal
Engine Oil Capacity2.5 gal2.5 gal
Alternator Supplied Amperage60 amps55 amps
Hydraulic System Relief Valve Pressure3,130 psi3,130 psi
Hydraulic Pump Flow Capacity29.1 gpm31.8 gpm
SpecificationR55-7
Operating Voltage12 V
Swing Drive Fluid Capacity0.4 gal
SpecificationR55W-7
Front Diff Fluid Capacity1.6 gal
Rear Diff Fluid Capacity1.3 gal
Operational Voltage12 V
Hydraulic Pump Typetwo variable displacement piston pumps
Tire Size12.0x16.5-12PR
Swing Mechanism
SpecificationR55-7R55W-7
Swing Speed9.3 rpm9.9 rpm
Buckets
SpecificationR55-7R55W-7
Reference Bucket Capacity0.3 yd30.3 yd3
Boom/Stick Option (Mex) 1
SpecificationR55W-7
Max Cutting Height19.92 ft
Max Loading Height14.24 ft
Max Reach Along Ground20.18 ft
Max Digging Depth11.49 ft
Boom/Stick Option (Mex) 1Boom 9'10" (3000mm)/Stick 5'3" (1600mm)
Transmission and speeds
SpecificationR55W-7
Transmission Type4-wheel hydrastatic drive, mesh, helical gear transmission
Number Of Forward Gears2
Number Of Reverse Gears2
Max Travel Speed16.8 mph
Variants — Source comparison annotation
Source guideDiffering-field count reported
R55-7 and R55W-749
Ratios
FigureR55-7R55W-7
Engine horsepower per 1,000 lb of weight4.14.6
Fuel tank per engine horsepower0.61 gal0.58 gal
Hydraulic power from the listed pump flow and relief pressure53.1 hp58.1 hp

Hyundai R55-7 and R55W-7: excavator

R55-7 and R55W-7: forum references — Forum-title search
Forum indexEquipment class queriedNames in the searchMatching titles
Heavy Equipment Forums and The Farming ForumexcavatorHyundai and the R55 line that the R55-7, R55W-7 belongs to (no title names the exact model)11
Topics named by those titles
Title topicTitles
starting and cranking3
fuel system3
Topic in the titleThreadsShare of matching threads
starting and cranking327%
fuel system327%
R55-7 and R55W-7: dated market and recall observations — Dated listing search
DateListing indexEquipment classNames queriedResult
2026-09-24MachineryTrader (machinerytrader.com)excavatorR55-7, R55W-7No matching offers in this snapshot
Dated CPSC search
DateDatabaseNames queriedResult
2026-09-24U.S. Consumer Product Safety CommissionHyundai; R55-7, R55W-7No matching recall in the stated search

Sources for this page

Evidence classDocument, classification and recorded date
Reference site
  • Reference site: Hyundai R55-7 — RitchieSpecs. Observed 2026-09-24.
Reference site
Forum threads
Forum threads
Federal agency data

Hyundai R55-7 and R55W-7: Configuration records

R55-7
SpecificationSource figure
Boom/Stick Option (Hex) 1
Max Vertical Wall Digging Depth10.5 ft
Boom/Stick Option (Hex) 1Boom 9'10" (3000mm)/Stick 5'3" (1600mm)
Dimensions and weight
Width To Outside Of Tracks6.3 ft
Length Of Track On Ground6.53 ft
Ground Clearance1.25 ft
Height To Top Of Cab8.37 ft
Tail Swing Radius5.42 ft
Undercarriage
Shoe Size15.75 in
Track Gauge4.93 ft
Number Of Track Rollers Per Side5
Number Of Shoes Per Side40
Ground Pressure4.7 psi
Number Of Carrier Rollers Per Side1
Drawbar Pull11,700 lb
Engine
Number Of Cylinders4
Engine Model4TNV94L
Gross Power53 hp
Net Power52 hp
Power Measured @2,200 rpm
Displacement186.4 cu in
Max Torque149 lb-ft
Torque Measured @1,400 rpm
Operational
Operating Weight12,570 lb
Fuel Capacity31.8 gal
Cooling System Fluid Capacity2.7 gal
Hydraulic System Fluid Capacity31.8 gal
Operating Voltage12 V
Engine Oil Capacity2.5 gal
Swing Drive Fluid Capacity0.4 gal
Alternator Supplied Amperage60 amps
Hydraulic System Relief Valve Pressure3,130 psi
Hydraulic Pump Flow Capacity29.1 gpm
Swing Mechanism
Swing Speed9.3 rpm
Buckets
Reference Bucket Capacity0.3 yd3
Additional specifications
Max Cutting Height18.97 ft
Max Loading Height13.29 ft
Max Reach Along Ground19.72 ft
Max Digging Depth12.54 ft
Max Travel Speed2.55 mph

Source

R55W-7
SpecificationSource figure
Dimensions and weight
Ground Clearance0.96 ft
Height To Top Of Cab9.36 ft
Tail Swing Radius5.42 ft
Wheelbase6.89 ft
Engine
Number Of Cylinders4
Engine Model4TNV94L
Gross Power57 hp
Net Power55 hp
Power Measured @2,400 rpm
Displacement186 cu in
Torque Measured @1,440 rpm
Net Torque149 lb-ft
Operational
Operating Weight12,015 lb
Fuel Capacity31.8 gal
Cooling System Fluid Capacity2.7 gal
Hydraulic System Fluid Capacity18.5 gal
Engine Oil Capacity2.5 gal
Alternator Supplied Amperage55 amps
Hydraulic System Relief Valve Pressure3,130 psi
Hydraulic Pump Flow Capacity31.8 gpm
Front Diff Fluid Capacity1.6 gal
Rear Diff Fluid Capacity1.3 gal
Operational Voltage12 V
Hydraulic Pump Typetwo variable displacement piston pumps
Tire Size12.0x16.5-12PR
Swing Mechanism
Swing Speed9.9 rpm
Buckets
Reference Bucket Capacity0.3 yd3
Transmission and speeds
Transmission Type4-wheel hydrastatic drive, mesh, helical gear transmission
Number Of Forward Gears2
Number Of Reverse Gears2
Additional specifications
Upper Structure Clearance3.24 ft
Max Cutting Height19.92 ft
Max Loading Height14.24 ft
Max Reach Along Ground20.18 ft
Max Digging Depth11.49 ft
Boom/Stick Option (Mex) 1Boom 9'10" (3000mm)/Stick 5'3" (1600mm)
Max Travel Speed16.8 mph

Source

More in Hyundai: R16-7/R22-7, R35Z-7, R36N-7.