825K Soil Compactor

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Cat Soil Compactors are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to operate more efficiently and safely. Representing a long-standing commitment to quality and performance, this rugged, powerful machine is designed and built for heavy-duty compaction and dozing operations. Focused on helping our customers succeed, we have continued to build upon each new series. The 825K continues our legacy of reliability, performance, safety, operator comfort, serviceability, and efficiency.

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Bore 5.4in
Displacement 927.6in³
Emissions Meets U.S. EPA Tier 4 Final/EU Stage IV emission standards or meets U.S. EPA Tier 3/EU Stage IIIA equivalent emission standards
Engine Model C15 Cat
Gross Power 435HP
High Idle Speed 2300r/min
Low Idle Speed 800r/min
Maximum Altitude - Without Derating (Tier 3 Final/Stage IIIA Equivalent) 9098ft
Maximum Altitude - Without Derating (Tier 4 Final/Stage IV) 9298ft
Maximum Net Torque - 1,300 rpm 1478.8lb/ft
Net Power 405HP
Net Power - Converter Drive - Gross Power 435HP
Net Power - Converter Drive - Torque Rise 8,5%
Net Power - Direct Drive - Gross Power 412HP
Net Power - Direct Drive - Torque Rise 33%
Rated Power (Net ISO 9249) 405HP
Rated Power (Net SAE J1349) 405HP
Stroke 6.7in
Operating Weight 78326lb
Operating Weight - Tier 3 Final/Stage IIIA Equivalent 77340lb
Operating Weight - Tier 4 Final/Stage IV 78326lb
Transmission Type Planetengetriebe ? Lastschaltgetriebe ? ECPC (Electronic Clutch Pressure Control, Elektronische Kupplungsdrucksteuerung)
Travel Speeds - Forward - First 3.4mile/h
Travel Speeds - Forward - Second 6mile/h
Travel Speeds - Forward - Third 10.7mile/h
Travel Speeds - Reverse - First 3.9mile/h
Travel Speeds - Reverse - Second 6.9mile/h
Travel Speeds - Reverse - Third 12.2mile/h
Machine Sound Level (ISO 6395) 113dB(A)
Operator Sound Level - ISO 6396 73dB(A)
Centerline of Rear Axle to Edge of Counterweight 9.3ft
Ground Clearance 1.6ft
Ground Clearance - Bumper 2.7ft
Height - ROPS/Canopy 13.3ft
Height - Top of Beacon 14.4ft
Height - Top of Exhaust Pipe 14.1ft
Height - Top of Hood 10.4ft
Hitch to Centerline of Front Axle 6.1ft
Length - With Blade on Ground 28.1ft
Turning Radius - Inside of Push Arms 8.6ft
Wheel Base 12.1ft
Width - Over Wheels 11.98ft
Cooling System 30.6gal (US)
Diesel Exhaust Fluid Tank (Tier 4 Final/Stage IV) 8.5gal (US)
Differential - Final Drives - Front 26.4gal (US)
Differential - Final Drives - Rear 29.1gal (US)
Engine Crankcase 9gal (US)
Fuel Tank 206.6gal (US)
Hydraulic Tank Only 35.4gal (US)
Transmission 17.4gal (US)
Front Planetary ? Fixed
Oscillation Angle ?8?
Rear Planetary ? Oscillating
Cylinders, Double Acting - Lift, Bore and Stroke 120 mm ? 1070 mm (4.7 in ? 42.1 in)
Cylinders, Double Acting - Tilt, Bore and Stroke 95.25 mm ? 216 mm (3.75 in ? 8.5 in)
Main Relief Pressure 3495psi
Maximum Supply Pressure 3495psi
Pump Flow at 1,800 rpm 30.9gal/min
Blade Tilt Angle - Left - Hydraulic 5,4?
Blade Tilt Angle - Left - Mechanical 4,1?
Blade Tilt Angle - Left Full 10,1?
Blade Tilt Angle - Right - Hydraulic 6,3?
Blade Tilt Angle - Right - Mechanical 5,1?
Blade Tilt Angle - Right Full 10,8?
Blade Tip Angle - Back 7,5?
Blade Tip Angle - Forward 7,3?
Blade Tip Angle - Total 14,8?
Height - Including Cutting Edge 3.4ft
Maximum Depth of Cut 1.97ft
Maximum Lift Above Ground 3.14ft
Moldboard - Length 14.4ft
Total Tilt Adjustment 2.9ft
Width - Over End Bits 15.18ft
Bore 4.5in
Maximum System Flow 170 L/min @ 1,800 rpm (44.9 gal/min @ 1,800 rpm)
Steering Pressure Limited 3481psi
Steering System - Circuit Double Acting ? End Mounted
Steering System - Pump Piston ? Variable Displacement
Stroke 22.7in
Vehicle Articulation Angle 86 degrees
Drum Diameter 4.3ft
Drum Width 3.7ft
Outside Diameter 5.5ft
Tips per Wheel 65
Weight 16167lb
Width - Over Drums 11.98ft
Machine Sound Level (ISO 6395) 110dB(A)
Operator Sound Level - ISO 6396 72dB(A)
Parking Brake Drum and Shoe, Spring Applied, Hydraulic Released

Standard Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Power Train
    • Air to air aftercooler
    • Autoshift
    • Brakes, full hydraulic, enclosed, wet multiple disc service brakes
    • Cat clean emission module (Tier 4 Final/Stage IV)
    • Electro-hydraulic parking brake
    • Electronic Clutch Pressure Control (ECPC)
    • Engine, Cat C15: – Tier 4 Final/Stage IV – Tier 3/Stage IIIA equivalent
    • Fuel priming pump (electric)
    • Fuel to air cooler
    • Ground level engine shutoff
    • Hydraulically driven demand fan
    • Integrated braking system
    • Muffler (under hood) (Tier 3/Stage IIIA equivalent)
    • Radiator, Aluminum Modular (AMR)
    • Separated cooling system
    • Single Clutch Speed Shifting (SCSS)
    • Starting aid (ether) automatic
    • Throttle lock
    • Torque converter with Lock Up Clutch (LUC)
    • Transmission, planetary, with 3F/3R speed range control
  • Electrical
    • Alarm, back-up
    • Alternator, 150 amp
    • Batteries, maintenance-free (4 – 1,000 CCA)
    • Electrical system, 24V
    • Ground level lockable master disconnect switch
    • Light, warning unswitched (LED strobe)
    • Lighting, access stairway
    • Lighting, under hood
    • Lighting system, halogen (front and rear)
    • Lights, directional (rear)
    • Starter, electric (heavy duty)
    • Starting receptacle for emergency start
  • Operator Environment
    • 12V power port for mobile phone or laptop connection
    • AccuGrade mapping (ready)
    • Air conditioner
    • Cab, sound-suppressed pressurized
    • Cab door, sliding window (LH)
    • Compaction control (ready)
    • Coat and hard hat hooks
    • Electro-hydraulic tilt and lift controls
    • Finger tip shifting controls
    • Flip-up armrest
    • Heater and defroster
    • Horn, electric
    • Implement hydraulic lockout
    • Instrumentation, gauges: – DEF fluid level (Tier 4 Final/Stage IV) – Engine coolant temperature – Fuel level – Hydraulic oil temperature – Speedometer/tachometer – Torque converter temperature
    • Instrumentation, warning indicators: – Action alert system, three categories – Brake oil pressure – Electrical system, low voltage – Engine failure malfunction alert and action lamp – Parking brake status
    • Internal four-post rollover protective structure (ROPS/FOPS)
    • Laminated glass
    • Light, (dome) cab
    • Lunch box and beverage holders
    • Mirror, internal (panoramic)
    • Mirrors, heated ready
    • Mirrors, rearview (externally mounted)
    • Radio ready for entertainment: – Antenna – Speakers – Converter (12V, 10-15 amp)
    • Seat, Cat Comfort (cloth) air suspension
    • Seat belt with minder, retractable, 76 mm (3 in) wide
    • STIC control system with lockout
    • Sun visor, front
    • Tinted glass
    • Transmission gear (indicator)
    • Vital Information Management System (VIMS): – Graphical information display – External data port – Customizable operator profiles
    • Wet-arm wipers/washers (front and rear)
    • Intermittent wipers (front and rear)
  • Tires, Rims And Wheels
    • Wheels, tamping tips
  • Guards
    • Guard, driveshaft
    • Guards, crankcase and power train
  • Blades
    • Bulldozer straight blade, hydraulics, and linkage are included in the base machine
  • Fluids
    • Antifreeze, premixed 50% concentration extended life (–34° C/–29° F)
  • Other Standard Equipment
    • Cleaner bars with teeth
    • Doors, service access (locking)
    • Ecology drains for engine, radiator, transmission, hydraulic tank
    • Emergency platform egress
    • Engine, crankcase, 500 hour interval with CJ-4 oil
    • Engine idle management features: – Auto idle kickdown – Delayed engine shutdown – Engine idle shutdown
    • Fast fuel system
    • Fire suppression ready
    • Fuel tank, Fast Fill, 782 L (207 gal)
    • Hitch, drawbar with pin
    • Hoses, Cat
    • Hydraulic, engine, and transmission oil coolers
    • Oil change system, high speed
    • Oil sampling valves
    • Product Link
    • Stairway, left and right rear access
    • Steering, load sensing
    • Toe kicks
    • Total hydraulic filtration system
    • Vandalism protection caplocks
    • Venturi stack
    • Fold down exhaust stack for shipping

Optional Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Operator Environment
    • Camera, rear vision
    • Radio, CB (ready)
  • Technology Products
    • Compaction control, basic
  • Fluids
    • Antifreeze, –50° C (–58° F)
  • Starting Aids
    • Heater, engine coolant, 120V
    • Heater, engine coolant, 240V
  • Miscellaneous
    • Film (ANSI) (Tier 4 Final/Stage IV)
    • EU certification (Tier 4 Final/Stage IV)
    • Plate – year of manufacture (Tier 3/Stage III Equivalent)
Renee HerndonRenee Herndon
21:55 29 Feb 24
Dalton was very helpful, The road construction, however, was not! 😂I would rather have to sand paper an alligators @$$ in a phone booth that to get in that mess again.
Michael BirrenMichael Birren
14:58 24 Feb 24
I purchased a used C-15 from a customer of Greg Pool was a running take out. I picked up the engine from the Greg Pool Cat near Nags Head NC. They started they had done all service on this engine stated the hours and all items replaced during the life of engine under their care. I just recently put the engine in my boat after 2 years of building the vessel I find that everything they said about the engine was a LIE!!! Turbo was Bad, After cooler was not updated to the newer version for the C-15 it was missing a terminal Resistor that was clearly stolen off the engine which created a major issue with start up upon installation. Greg Pool Caterpillar stated the hours at 3300 we find out there were 5700 hours. I didn’t do a start up or test run which I regret because i was dealing with a Caterpillar dealer i thought i could trust them. Clearly not Buyers Be Ware if your dealing with Greg Pool Caterpillar in NC. I have 3 of the C-15 engines in my Work boats here in Tampa Fl and my Cat dealership here is Ring power who have done an amazing job to get me going with this Engine. I am very Disappointed in The Caterpillar company for allowing such A dealership to exist.
David LawrenceDavid Lawrence
13:04 22 Feb 24
Brandon PierceBrandon Pierce
22:00 18 Feb 24
Darin NoeDarin Noe
01:17 16 Feb 24
Jose SotoJose Soto
15:26 23 Sep 23
Hunter ElliottHunter Elliott
16:17 07 Sep 23
Rick Kelly-CrapseRick Kelly-Crapse
21:06 25 Aug 23
They had all my parts for my 3208 Cat.Friendly folks at parts counter.