Nearly half of the large dozers Caterpillar sells are D9 dozers—and for good reason. They’re the smart choice for dozens of applications and environments thanks to unmatched reliability, long life and a wide range of application-specific blades.
Like all Cat® dozers, the productive and efficient D9 is a fully integrated Cat machine—100% designed by Caterpillar and built with all Cat components that work together to deliver top performance and high availability. With the D9, you’ll move more dirt at the lowest possible cost.

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Bore 5.7in³
Displacement 1106in³
Emissions U.S. EPA Tier 2 or Tier 3 equivalent
Engine Model Cat® C18
Engine Power - Gross SAE J1995 487HP
Engine Power - ISO 14396 479HP
Engine Power - Net SAE J1349/ISO 9249 452HP
Note (1) All engine ratings apply at 1,750 rpm.
Note (2) No derating required up to 4267 m (14,000 ft) altitude.
Stroke 7.2in
Note (1) D9 Operation Weight includes hydraulic controls, blade tilt cylinder, coolant, lubricants, full fuel tank, ROPS, FOPS cab, SU Blade, Single-Shank Ripper, 610 mm (24 in) ES shoes and operator.
Note (2) D9 Operation Weight includes base machine chassis with cab, pivot shaft, roller frames, track and ROPS.
Operating Weight 110225lb
Shipping Weight 84373lb
Ground Clearance 18.1in
Ground Contact Area 45.6ft²
Grouser Height 3.3in
Length - Track on Ground 136.6in
Number of Carrier Rollers 1 per side (optional)
Pitch 9.4in
Shoe Type Extreme Service
Shoes/Side 43
Track Gauge 88.6in
Track Rollers/Side 8
Width - Shoe 24in
FOPS Falling Object Protective Structure (FOPS) meets the following criteria ISO 3449:2005 LEVEL II.
ROPS Rollover Protective Structure (ROPS) meets the following criteria ISO 3471:2008.
Sound The average dynamic spectator sound power level when ISO 6395:2008 is used to measure the value for a machine is 116 dB(A). The measurement was conducted at 70% of the maximum engine cooling fan speed. The sound level may vary at different engine cooling
Sound (1) The average dynamic operator sound pressure level when ISO 6396:2008 is used to measure the value for an enclosed cab is 78 dB(A). The measurement was conducted at 70% of the maximum engine cooling fan speed. The sound level may vary at different engine c
Sound (2) Hearing protection may be needed when the machine is operated with an open operator station for extended periods, in a noisy environment, or with a cab that is not properly maintained.
Brake Count 8
Brake Diameter 15.5in
Brake Type Spring Applied Wet Disc
Steering Type Differential
Bore 5.7in³
Displacement 1106in³
Emissions U.S. EPA Tier 4 / EU Stage V
Engine Model Cat® C18
Engine Power - Gross SAE J1995 477HP
Engine Power - ISO 14396 468HP
Engine Power - Net SAE J1349/ISO 9249 440HP
Note (1) All Engine ratings apply at 1,750 rpm.
Note (2) No derating required up to 2499 m (8,200 ft).
Stroke 7.2in³
Cooling System 21gal (US)
DEF Tank (Tier 4 only) 9.5gal (US)
Engine Crankcase* 10gal (US)
Final Drives (each) 4gal (US)
Fuel Tank (Fast Fill) 248gal (US)
Fuel Tank (Splash Fill) 254gal (US)
Hydraulic System Tank 24gal (US)
Note *With oil filters.
Note 2 Biodiesel blends up to B20 (20% blend by volume) are acceptable when blended with 15 ppm (mg/kg) sulfur or less ULSD. B20 should meet ASTM D7467 specification (biodiesel blend stock should meet Cat biodiesel spec, ASTM D6751 or EN 14214). Cat DEO-ULSTM or
Note 3 All non-road Tier 4 Final diesel engines are required to use only ultra-low sulfur diesel (ULSD) fuels containing 15 ppm (mg/kg) sulfur or less.
Note 4 Diesel Exhaust Fluid (DEF) used in Cat Selective Catalytic Reduction (SCR) systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241.
Pivot Shaft Oil 8gal (US)
Powertrain 40gal (US)
Roller Frames (each) 12gal (US)
Fan Pump 21gal/min
Lift Cylinder Relief Valve Setting 3800lbf/in
Note (1) Steering pump output measured at 1,750 engine rpm and 30 000 kPa (4,350 psi).
Note (2) Implement pump output measured at 1,750 engine rpm and 20 000 kPa (2,900 psi).
Note (3) Fan pump output measured at 1,750 engine rpm and 17 000 kPa (2,470 psi)
Pump Output - Steering 96gal/min
Pump Type Piston-type geared to flywheel
Ripper - Lift - Relief Valve Setting 3800psi
Ripper - Pitch - Relief Valve Setting 3800psi
Steering System - Pressure 5874psi
Tank Capacity 24gal/min
Tilt Cylinder Flow - Head End Flow 53gal/min
Tilt Cylinder Flow - Rod End Flow 53gal/min
Tilt Cylinder Relief Valve Setting 2799psi
Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430) the system contains 2.1 kg of refrigerant which has a CO2 equivalent of 3.003 metric tonnes.
1.0 Forward 2.2mile/h
1.0 Reverse 2.7mile/h
2.0 Forward 3.9mile/h
2.0 Reverse 4.8mile/h
3.0 Forward 6.8mile/h
3.0 Reverse 8.4mile/h
Type Planetary powershift
Blade Capacity (SAE J1265) 17.8yd³
Blade Height 76.1in
Blade Weight 10587lb
Blade Width (over end bits) 171.3in
Ground Clearance at Full Lift 56in
Maximum Digging Depth 23.9in
Maximum Tilt 37in
Note * Total Operating Weight includes: single tilt hydraulics, coolant, lubricants, full fuel tank, ROPS, FOPS cab, 610 mm (24 in) ES track shoes and the noted blade and ripper type.
Total Operating Weight* (with blade and single-shank ripper) 110205lb
Blade Capacity (SAE J1265) 21.7yd³
Blade Height 76.1in
Blade Weight 12016lb
Blade Width (over end bits) 184.3in
Ground Clearance at Full Lift 56in
Maximum Digging Depth 23.9in
Maximum Tilt 39.9in
Note *Total Operating Weight includes: single tilt hydraulics, coolant, lubricants, full fuel tank, ROPS, FOPS cab, 610 mm (24 in) ES track shoes and the noted blade and ripper type.
Total Operating Weight* (with blade and single-shank ripper) 111362lb
Maximum Clearance Raised - Under Tip, Pinned in Bottom Hole 34.7in
Maximum penetration depth (standard tip) 48.5in
Maximum penetration force * (shank vertical) 35520lbf
Note *Total Operating Weight includes: single tilt hydraulics, coolant, lubricants, full fuel tank, ROPS, FOPS cab, 610 mm (24 in) ES track shoes and the noted blade and ripper type.
Number of Pockets 1
Pryout Force 74637lbf
Total Operating Weight* (with SU Blade and noted ripper) 110205lb
Weight 10701lb
Maximum Clearance Raised - Under Tip, Pinned in Bottom Hole 32.2in
Maximum penetration depth (standard tip) 68in
Maximum penetration force * (shank vertical) 38667lbf
Note *Total Operating Weight includes: single tilt hydraulics, coolant, lubricants, full fuel tank, ROPS, FOPS cab, 610 mm (24 in) ES track shoes and the noted blade and ripper type.
Number of Pockets 1
Pryout Force 74412lbf
Total Operating Weight* (with SU Blade and noted ripper) 110485lb
Weight 10981lb
Maximum Clearance Raised - Under Tip, Pinned in Bottom Hole 34.6in
Maximum Penetration - Standard Tip 31.4in
Maximum Penetration Force - Shank Vertical 34621lbf
Note * Total Operating Weight includes: single tilt hydraulics, coolant, lubricants, full fuel tank, ROPS, FOPS cab, 610 mm (24 in) ES track shoes and the noted blade and ripper type.
Number of Pockets 3
Pry-Out Force - Multi-Shank Ripper with One Tooth 81156lbf
Total Operating Weight* - With SU-Blade and Ripper 111739lb
Weight 12136lb
Drawbar Height (Center of Clevis)* 30in
Ground Clearance* 18.1in
Height - FOPS Cab* 150.4in
Height - ROPS/Canopy* 157.5in
Height - Top of Stack* 152.6in
Length - Basic Tractor - With Drawbar 206.4in
Length - Basic Tractor - With Winch 218.3in
Length - Track on Ground 136.6in
Length - With Multi-Shank Ripper 257.4in
Length - With SU-Blade** 259.9in
Length - With Single-Shank Ripper 257in
Length - With U-Blade 274.3in
Note (1) *Includes grouser height for total dimensions on hard surfaces.
Overall Length - Basic Tractor 193.3in
Overall Length - SU-Blade/SS Ripper 323.6in
Track Gauge 88.6in
Width - Over Trunnions 130.3in
Width - Without Trunnions - Standard Shoe 113in
Drum Width 12.6in
Maximum Drum Capacity - Optional Cable Length 204ft
Maximum Drum Capacity - Recommended Cable Length 257in
Note *Weight shown is base winch only. Does not include mounting arrangement, control arrangement, oil, or wire rope. With counterweight: 3700 kg (8,150 lb).
Note (2) Variable speed, hydraulically driven, dual braking system, three-roller fairlead.
Oil Capacity 4gal (US)
Weight* 3950lb
Winch Model PA 140VS
Wire Cable Diameter - Optional 1.25ft
Wire Cable Diameter - Recommended 1.13in
Wire Cable Ferrule Size - Length 2.8in
Wire Cable Ferrule Size - Outside Diameter 2.4in

Standard Equipment:

  • Operator Environment
    • ROPS/FOPS, Sound-Suppressed Cab
    • High-Definition Primary Touchscreen Display
    • Visibility – Rearview Mirrors
    • Air Conditioner and Heater with Automatic Climate Control
    • Seatbelt, 76 mm (3 in) Retractable with Switch
    • Seat — Cloth with Air Suspension
    • Window Wipers with Wash — Low, High, Intermittent
    • Differential Steering — Power Turn
    • Entertainment Radio Ready (12V Power, Harness, Speakers)
    • Cab Glass — Single-Pane Tinted Safety
    • Cab Door — Right-Hand Swing
    • Access/Egress Lighting with Shutdown Timer
    • "Operator Not Present" Detection
    • Armrest — Adjustable
    • Interior LED Courtesy Lights
    • Interior Backlighting — Dimmable
    • Air Conditioning Condenser — Cab Mounted (Standard only on Tier 4 engine arrangements. Optional on Tier 2/3 versions. Tier 2/3 versions have underhood A/C condenser standard.)
    • Decelerator Pedal
    • Controls — Blade — Electronic
    • Controls — Ripper — Electronic
    • Park Brake — Electronic
    • Engine Speed Control Dial
    • Cab Access — Blade Pusharm Steps and Grab Handle
    • Fender Platform Guardrails
    • Site Communication Radio Mount
    • Four Fluids (Engine Oil, Coolant, Power Train, Fuel)
    • Continuous Fluid Level Monitoring — Four Fluids (Engine Oil, Power Train, Coolant, Fuel)
    • Slope and Side Slope Monitor
  • Technology
    • VIMS
    • Automated Blade Assist (ABA) — When Equipped with Dual Tilt
    • Cat Product Link Elite (Cellular) (Where Allowed by Local Regulations)
  • Power Train
    • Aftercooler, air-to-air
    • Air filter, with precleaner
    • Aluminum bar plate radiator, 6 fpi
    • C18 Tier 4 Final and Stage IV: – 24-volt electric start – Clean Emissions Module
    • Coolant, extended life
    • Shift management: - Advanced Productivity Electronic Control System (APECS) - Enhanced AutoShift (EAS)
    • Engine idle shutdown timer
    • Ether starting aid, automatic
    • Fast fuel system
    • Fuel priming pump, key-on, electric
    • High speed oil change system, engine and power train
    • Muffler
    • Parking brake, electronic
    • Prescreener
    • Separator, water/fuel
    • Three planet, double-reduction planetary final drives
    • Torque converter
    • Transmission, electronic control (ECPC), (3F/3R speeds)
  • Fluids
    • Coolant — Extended Life, Standard (— 37° C / — 25° F)
  • Undercarriage
    • Suspension-Type Undercarriage
    • Track Guide
    • Two-Piece Master Link
    • Lifetime-Lubricated Rollers and Idlers
    • Hydraulic Track Adjusters
    • Equalizer Bar — Greased End Pin Bearings
  • Hydraulics
    • Electronically Controlled, Load-Sensing Dozer Lift and Tilt
    • Electronically Controlled, Load-Sensing Ripper Lift and Pitch
    • Electronically Enabled Blade, Quick Drop
  • Electrical
    • Alternator — 150-Amp
    • Batteries — 2 x 4, 200-Amp Hour, 12V
    • 12V, 15-Amp Converter
    • Battery Isolation
    • Backup Alarm
    • Lights, Engine Compartment
    • Lights — Halogen — 8 Positions
  • Service And Maintenance
    • Ecology Fluid Drains — All Compartments
    • Hinged Bottom Guards
    • High-Speed Oil Change — Engine and Transmission
    • SOS℠ Fluid Sampling Ports
    • Diagnostic Connector
    • CapSureTM Hammerless Ripper Tip and Shank Protectors
    • Anchorage Points (10)

Optional Equipment:

  • Operator Environment
    • Visibility – Camera – Ripper Tip View
    • Visibility — Dual Camera
    • Visibility — Four Cameras — 360-Degree View
    • Seat — Heated, Cooled, Adjustable Lumbar and Bolsters
    • Entertainment Radio — AM/FM, Aux Input and Bluetooth®
    • Cab Glass — Dual-Pane Laminated Impact Safety
    • Cab Glass — High-Pressure Safety (40 psi/275 kPa)
    • Window Sunscreen
    • Small Operator 5th Percentile Mounting Group
    • Cab Door — Left-Hand Swing
    • Cab Access — Powered Ladder
    • Cab Filter Powered Precleaner
  • Technology
    • AutoCarry
    • Auto Ripper Control
    • Cat Product Link Elite Dual Mode (Cellular + Satellite)
    • Cat GRADE with 3D
  • Power Train
    • Coolant, arctic
    • Engine prelube
    • Exhaust, wrapped: – Insolated Clean Emissions Module
    • Final drives: – Cold weather – Guarded – Waste handling
    • Ground level DEF fill
    • Reversible cooling fan
  • Fluids
    • Coolant — Extended Life, Arctic (— 51° C / — 60° F)
    • High Ambient Lubrication Package
    • Arctic Lubrication Package
  • Undercarriage
    • Undercarriage Arrangement — Abrasion
    • Undercarriage Arrangement — Waste Handling
    • Undercarriage Arrangement — Cold Weather
    • Front Striker Bars
    • Rubber Idler Guards
    • Track Links — Heavy Duty XL — DuraLink
    • Track Shoe — Anti-Packing Round Hole Carrier Roller
    • Carrier Roller
    • Carrier Roller — Cold Weather
  • Hydraulics
    • Dozer Blade Dual Tilt
    • Ripper Pin Puller
    • Guarded Tilt Cylinder Lines
  • Electrical
    • 24V Electric Start, Dual Starters
    • Batteries — 4 x 200, 200-Amp Hour, 12V
    • Lights — Halogen — 12 Positions
    • Lights — LED — 14 Positions
    • Lights — High-Output LED — 14 Positions
    • Light — Warning Strobe
  • Service And Maintenance
    • Sound-Reduction Sealed Bottom Guards
    • Ground-Level Fast Fuel Fill (Standard on Tier 4)
    • Sound Enclosure
    • Cat Autolube Grease System with Ground-Level Fill and Auto Shutoff
    • Hinged Quick-Access Door on Radiator Guard
  • Rear Attachments
    • Ripper Ready
    • Winch Ready
    • Ripper — Single Shank
    • Ripper — Single-Shank Deep
    • Ripper — Multi Shank (three shank)
    • Counterweight
    • Striker Box (Waste)
    • Winch
    • Drawbar
  • Blades
    • Semi-Universal (13.6 m3/17.8 yd3)
    • Semi-Universal Abrasion (13.6 m3/17.8 yd3)
    • Universal (16.6 m3/21.7 yd3)
    • Universal Abrasion (16.6 m3/21.7 yd3)
    • Semi-Universal Push Plate (13.6 m3/17.8 yd3)
    • SU Landfill (28.2 m3/36.8 yd3)
    • Universal Landfill (38.8 m3/50.8 yd3)
    • Woodchip (46.1 m3/60.3 yd3)
    • Coal (36.8 m3/48.2 yd3)
      — Some blades only available through Cat Work Tools.
      — SU Abrasion and U Abrasion are available with black paint on back side.
  • Other
    • Fire Suppression Ready
  • Special Arrangements
    • High Debris
    • Stockpile
    • Waste Handling
    • Sound
    • Arctic