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Liebherr LR622B and PR712B specifications

Entries in this reference
Listing-entry count
2
Short answer

Liebherr LR622B and PR712B: crawler dozers.

Selected configuration figures
ConfigurationDocumented field and quantity
LR622B
Net Power
132 hp
Operating Weight
35,100 lb
PR712B
Net Power
105 hp
Operating Weight
30,000 lb
LR622B and PR712B specification matrix — Listing labels reported by the source
Publisher nameSource guideListing-entry countLabels named by the source
LiebherrLR622B and PR712B2LR622B and PR712B
Dimensions and weight
SpecificationLR622B
Length With Bucket On Ground20.07 ft
Width To Outside Of Tracks8.04 ft
Clearance At Full Height And Dump9.52 ft
Reach At Dump Height3.37 ft
Length To Front Of Track14.24 ft
SpecificationLR622BPR712B
Ground Clearance15.56 ft1.22 ft
Height To Top Of Cab10.27 ft10.18 ft
SpecificationPR712B
Length W/ Blade15.31 ft
Width Over Tracks9.02 ft
Length Of Track On Ground8.58 ft
Length W/O Blade12.06 ft
Undercarriage
SpecificationLR622BPR712B
Track Gauge66.15 in5.75 ft
Ground Pressure8.68 psi7.11 psi
Number Of Track Rollers Per Side67
SpecificationLR622B
Track Shoe Width20 in
SpecificationPR712B
Standard Shoe Size22.05 in
Engine
SpecificationLR622BPR712B
Number Of Cylinders44
Engine ModelD 924 T-ED 924 T-E
Net Power132 hp105 hp
Power Measured @2,000 rpm2,000 rpm
Aspirationturbo-chargedTurbocharged
Displacement408.9 cu in409 cu in
Operational
SpecificationLR622BPR712B
Operating Weight35,100 lb30,000 lb
Fuel Capacity68.7 gal81.9 gal
Cooling System Fluid Capacity11.1 gal13.8 gal
Engine Oil Capacity4.8 gal4.8 gal
Operating Voltage24 V24 V
Alternator Supplied Amperage55 amps55 amps
SpecificationLR622B
Final Drive Fluid Capacity - Each3.5 gal
Hydraulic System Fluid Capacity34.4 gal
Static Tipping Load23,369 lb
Breakout Force - Std Bucket30,574 lb
Bucket Capacity - Struck2.3 yd3
SpecificationPR712B
Hydraulic Fluid Capacity47.1 gal
Final Drives Fluid Capacity1.5 gal
Hydraulic
SpecificationLR622B
Pump Typeswash plate piston pump
Pump Flow Capacity41.3 gpm
Relief Valve Pressure3,770 psi
Transmission and speeds
SpecificationPR712B
Transmission TypeHydrostatic
Number Of Forward Gears3
Number Of Reverse Gears3
Max Speed - Forward6.8 mph
Hydraulic System
SpecificationPR712B
Pump TypeLoad sensing proportional pump flow control
Relief Valve Pressure2,300 psi
Pump Flow Capacity30 gpm
Standard Blade
SpecificationPR712B
Blade width9.9 ft
Blade height37.5 in
Capacity2.8 yd3
Variants — Source comparison annotation
Source guideDiffering-field count reported
LR622B and PR712B42
Ratios
FigureLR622BPR712B
Engine horsepower per 1,000 lb of weight3.83.5
Pump flow per engine horsepower0.31 gpm0.29 gpm
Fuel tank per engine horsepower0.52 gal0.78 gal
Reference directory classification
Equipment groupcrawler dozer
LR622B and PR712B: forum references — Forum-title search
Forum indexEquipment class queriedNames in the searchMatching titles
Heavy Equipment Forumscrawler dozerLiebherr and the LR622, PR712 line that the LR622B, PR712B belongs to (no title names the exact model). That is too few titles to say what owners mostly ask about, so the most recent are listed instead2
Used market for the LR622B and PR712B — Dated first-page listing snapshot
Observation dateListing sourceEquipment searchListings
2026-09-24MachineryTraderLiebherr crawler dozer1
ModelListedModel yearsLowest askingHighest askingMedian askingMedian hours
LR622B12008$25,620$25,620$25,620None shown
LR622B and PR712B: recall reference — Dated CPSC search
Search dateDatabaseNames queriedSearch result
2026-09-24U.S. Consumer Product Safety CommissionLiebherr together with the crawler dozer LR622B, PR712BNo matching recall in this search

Sources for this page

Evidence classDocument, classification and recorded date
Reference site
Reference site
Forum threads
Used-market listings
Federal agency data

Liebherr LR622B and PR712B: Configuration records

LR622B
SpecificationSource figure
Dimensions and weight
Length With Bucket On Ground20.07 ft
Width To Outside Of Tracks8.04 ft
Height To Top Of Cab10.27 ft
Clearance At Full Height And Dump9.52 ft
Reach At Dump Height3.37 ft
Length To Front Of Track14.24 ft
Undercarriage
Number Of Track Rollers Per Side6
Ground Pressure8.68 psi
Track Shoe Width20 in
Engine
Number Of Cylinders4
Engine ModelD 924 T-E
Net Power132 hp
Power Measured @2,000 rpm
Aspirationturbo-charged
Displacement408.9 cu in
Operational
Operating Weight35,100 lb
Fuel Capacity68.7 gal
Cooling System Fluid Capacity11.1 gal
Engine Oil Capacity4.8 gal
Final Drive Fluid Capacity - Each3.5 gal
Hydraulic System Fluid Capacity34.4 gal
Static Tipping Load23,369 lb
Bucket Capacity - Struck2.3 yd3
Operating Voltage24 V
Alternator Supplied Amperage55 amps
Breakout Force - Std Bucket30,574 lb
Additional specifications
Track Gauge66.15 in
Pump Typeswash plate piston pump
Pump Flow Capacity41.3 gpm
Relief Valve Pressure3,770 psi

Source

PR712B
SpecificationSource figure
Dimensions and weight
Ground Clearance1.22 ft
Height To Top Of Cab10.18 ft
Length W/ Blade15.31 ft
Width Over Tracks9.02 ft
Length W/O Blade12.06 ft
Undercarriage
Number Of Track Rollers Per Side7
Ground Pressure7.11 psi
Standard Shoe Size22.05 in
Engine
Number Of Cylinders4
Engine ModelD 924 T-E
Net Power105 hp
Power Measured @2,000 rpm
AspirationTurbocharged
Displacement409 cu in
Operational
Operating Weight30,000 lb
Fuel Capacity81.9 gal
Cooling System Fluid Capacity13.8 gal
Engine Oil Capacity4.8 gal
Operating Voltage24 V
Alternator Supplied Amperage55 amps
Hydraulic Fluid Capacity47.1 gal
Final Drives Fluid Capacity1.5 gal
Transmission and speeds
Transmission TypeHydrostatic
Number Of Forward Gears3
Number Of Reverse Gears3
Max Speed - Forward6.8 mph
Standard Blade
Blade width9.9 ft
Blade height37.5 in
Capacity2.8 yd3
Additional specifications
Length Of Track On Ground8.58 ft
Track Gauge5.75 ft
Pump TypeLoad sensing proportional pump flow control
Relief Valve Pressure2,300 psi
Pump Flow Capacity30 gpm

Source

Compare Liebherr LR622B, PR712B
Dimensions and weight
SpecificationLR622BPR712B
Height To Top Of Cab10.27 ft10.18 ft
Undercarriage
SpecificationLR622BPR712B
Track Gauge66.15 in5.75 ft
Ground Pressure8.68 psi7.11 psi
Number Of Track Rollers Per Side67
Engine
SpecificationLR622BPR712B
Number Of Cylinders44
Engine ModelD 924 T-ED 924 T-E
Net Power132 hp105 hp
Power Measured @2,000 rpm2,000 rpm
Aspirationturbo-chargedTurbocharged
Displacement408.9 cu in409 cu in
Operational
SpecificationLR622BPR712B
Operating Weight35,100 lb30,000 lb
Fuel Capacity68.7 gal81.9 gal
Cooling System Fluid Capacity11.1 gal13.8 gal
Engine Oil Capacity4.8 gal4.8 gal
Operating Voltage24 V24 V
Alternator Supplied Amperage55 amps55 amps

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