825K

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.


SPECIFICATIONS
Engine
Engine Model Cat® C15 ACERT™
Net Power 405 HP


Operating Specifications
Operating Weight 78326 lb


Axles
Front Planetary – Fixed
Oscillation Angle ±8°
Rear Planetary – Oscillating


Blades
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 3.4 ft
Maximum Depth of Cut 1.97 ft
Maximum Lift Above Ground 3.14 ft
Moldboard - Length 14.4 ft
Total Tilt Adjustment 2.9 ft
Width - Over End Bits 15.18 ft


Brakes
Parking Brake Drum and Shoe, Spring Applied, Hydraulic Released


Cab - Standard
Machine Sound Level (ISO 6395) 113 dB(A)
Operator Sound Level - ISO 6396 73 dB(A)


Cab - Suppression
Machine Sound Level (ISO 6395) 110 dB(A)
Operator Sound Level - ISO 6396 72 dB(A)


Dimensions (Approximate)
Centerline of Rear Axle to Edge of Counterweight 9.3 ft
Ground Clearance 1.6 ft
Ground Clearance - Bumper 2.7 ft
Height - ROPS/Canopy 13.3 ft
Height - Top of Beacon 14.4 ft
Height - Top of Exhaust Pipe 14.1 ft
Height - Top of Hood 10.4 ft
Hitch to Centerline of Front Axle 6.1 ft
Length - With Blade on Ground 28.1 ft
Turning Radius - Inside of Push Arms 8.6 ft
Wheel Base 12.1 ft
Width - Over Wheels 11.98 ft


Engine
Bore 5.4 in
Displacement 927.6 in³
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
Gross Power 435 HP
High Idle Speed 2300 r/min
Low Idle Speed 800 r/min
Maximum Altitude - Without Derating (Tier 3 Final/Stage IIIA Equivalent) 9098 ft
Maximum Altitude - Without Derating (Tier 4 Final/Stage IV) 9298 ft
Maximum Net Torque - 1,300 rpm 1478.8 lb/ft
Net Power - Converter Drive - Gross Power 435 HP
Net Power - Converter Drive - Torque Rise 8.5%
Net Power - Direct Drive - Gross Power 412 HP
Net Power - Direct Drive - Torque Rise 33%
Rated Power (Net ISO 9249) 405 HP
Rated Power (Net SAE J1349) 405 HP
Stroke 6.7 in


Hydraulic System
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 3495 psi
Maximum Supply Pressure 3495 psi
Pump Flow at 1,800 rpm 30.9 gal/min


Hydraulic System - Steering
Bore 4.5 in
Maximum System Flow 170 L/min @ 1,800 rpm (44.9 gal/min @ 1,800 rpm)
Steering Pressure Limited 3481 psi
Steering System - Circuit Double Acting – End Mounted
Steering System - Pump Piston – Variable Displacement
Stroke 22.7 in
Vehicle Articulation Angle 86 degrees


Operating Specifications
Operating Weight - Tier 3 Final/Stage IIIA Equivalent 77340 lb
Operating Weight - Tier 4 Final/Stage IV 78326 lb


Service Refill Capacities
Cooling System 30.6 gal (US)
Diesel Exhaust Fluid Tank (Tier 4 Final/Stage IV) 8.5 gal (US)
Differential - Final Drives - Front 26.4 gal (US)
Differential - Final Drives - Rear 29.1 gal (US)
Engine Crankcase 9 gal (US)
Fuel Tank 206.6 gal (US)
Hydraulic Tank Only 35.4 gal (US)
Transmission 17.4 gal (US)


Transmission
Transmission Type Planetary – Powershift – ECPC
Travel Speeds - Forward - First 3.4 mile/h
Travel Speeds - Forward - Second 6 mile/h
Travel Speeds - Forward - Third 10.7 mile/h
Travel Speeds - Reverse - First 3.9 mile/h
Travel Speeds - Reverse - Second 6.9 mile/h
Travel Speeds - Reverse - Third 12.2 mile/h


Wheels
Drum Diameter 4.3 ft
Drum Width 3.7 ft
Outside Diameter 5.5 ft
Tips per Wheel 65
Weight 16167 lb
Width - Over Drums 11.98 ft


BENEFITS & FEATURES
Efficiency and Productivity


The Autoshift mode, when active, allows the machine to automatically upshift or downshift based on machine speed and torque, optimizing performance and thus saving fuel. This feature can be easily enabled or disabled on the soft keypad.

Decelerator Pedal
The left pedal acts as a brake, transmission neutralizer and an engine decelerator to override the engine speed selected by the throttle lock. This enables the operator to slow down when the throttle lock is engaged and to return to throttle lock without pressing a resume or set button again. This aids in maneuvering around trucks, tractors or any other obstacle.

Decelerator Pedal


Steering and Transmission Integrated Control System (STIC™)
Experience maximum responsiveness and control with STIC that combines directional selection, gear selection and steering into a single lever.
  • Simple side-to-side motion turns machine right or left, minimizing operator movements
  • Easy to operate finger controlled gear selection
  • Smoother, faster cycles help reduce operator fatigue through the use of low effort integrated controls

Steering and Transmission Integrated Control System (STIC™)


Steering System
Confident machine operation starts with precise machine control enabled by the 825K's load sensing hydraulic steering system.
  • Increase efficiency with our variable displacement piston pumps
  • Achieve precise positioning for easy loading in tight areas with 43 degrees each way of steering articulation
  • Enhance operator comfort with integrated steering and transmission control functions

Steering System


Electro Hydraulic Controls
Operators increase productivity with our responsive implements feature.
  • Operate comfortably through electronically controlled hydraulic cylinder stops
  • Handle easy-to-use soft detent controls

Structures


The 825 is specifically designed and made with purpose built structures to remain safe and durable for the long run. Advanced design, materials and robotic welding contribute to increased durability and overall machine strength.

Robust Structures
Your bottom line is improved by highly durable structures that achieve multiple life cycles and withstand the toughest loading conditions.
  • Full box-section rear frame resists torsional shock and twisting forces
  • Heavy-duty steering cylinder mounts efficiently transmit steering loads into the frame
  • Axle mounting has been optimized for increased structural integrity

Power Train


Cat Planetary Powershift Transmission
Building your success begins with a best-in-class transmission.
  • Consistent, smooth shifting and efficiency through integrated electronic controls that utilize Single Clutch Speed Shifting (SCSS).
  • Long life and reliability through heat treat gear and metallurgy.
  • Three forward and three reverse speeds to match your application.

Cat Torque Converter (TC) with Lock-up Clutch
  • Eliminates TC losses while lowering system heat
  • Improves travel speeds
  • Increases fuel efficiency

Cat C15 ACERT Engine
The Cat C15 ACERT engine is built and tested to meet your most demanding applications. Two engine options are available that meet Tier 4 Final/Stage IV emission standards or Tier 3/Stage IIIA equivalent emission standards.
  • Fully integrated electronic engine controls works in concert with the entire machine to make your fuel go farther.
  • Use less fuel idling with Engine Idle Shutdown.
  • Maximized durability with Delayed Engine Shutdown.

Cat C15 ACERT Engine


Tamping Wheels and Tips


Chevron Tamping Tip Design
The modified chevron tamping wheel tip design provides greater ground pressure, more compaction, excellent traction and a smooth ride.

Compaction
Compaction is achieved from the bottom of the lift to the top. The tapered tips walk out of the lift without “fluffing” the soil. The top of the lift is compacted and the surface is relatively smooth and sealed so hauling units are able to maintain a high speed when traveling over the fill. The 825K travel speed allows four forces of compaction: pressure, manipulation, impact and vibration. Since the 825K can also spread fill, the number of spreader tractors may be able to be reduced.

Standard Tips
Standard tips are used in typical soil compaction applications where compaction specification requirements are 95-100 percent Standard Proctor.

Symmetrical Tamping Tip Pattern
Equal compaction in forward or reverse is the result of the symmetrical tamping tip pattern. Tips are full perimeter and replaceable. The tip is welded to a base assembly, which then is welded directly to the drum.

Cleaner Bars
Each wheel has two cleaner bars to keep the drums free of carryover dirt, regardless of rolling direction so efficiency is maximized.

Adjustable Cleaner Bar Tip
The adjustable cleaner bar tips are heat-treated and direct hardened, cutting edge steel to increase wear life, which translates into lower operating costs.

Operator Station


Your operators can work more efficiently and stay comfortable with our customer-inspired cab features.

Entry and Exit
Enter and exit the cab easily and safely with these newly designed, ergonomic features.
  • Fold up STIC steer/armrest
  • Reduced access stairway angles
  • Standard stairway lighting

Entry and Exit


Cat Comfort Series III Seat
Enhance comfort and help reduce operator fatigue with Cat Comfort Series III seat.
  • Mid back design and extra thick, contoured cushions
  • Air suspension system
  • Easy-to-reach seat levers and controls for six way adjustments
  • Seat-mounted implement pod and STIC steer that moves with the seat
  • 76 mm (3 in) wide retractable seat belt

Cat Comfort Series III Seat


Control Panel
Ergonomic placement of switches and information display keep your operators comfortable all day every day.
  • Large backlit membrane switches feature LED activation indicators
  • Switches feature ISO symbols for quick function identification
  • Two position rocker switch activates the electro hydraulic park brake

Control Panel


Environment
Your operator's productivity is enhanced with our clean, comfortable cab environment.
  • Experience reduced vibrations from isolation cab mounts and seat air suspension.
  • Maintain desired cab temperature with automatic temperature controls.
  • Pressurized cab with filtered air
  • Reduced sound levels
  • Convenient floor storage tray/lunch box

Integrated Technologies


Cat Connect makes smart use of technology and services to improve your job site efficiency. Using the data from technology-equipped machines, you'll get more information and insight into your equipment and operations than ever before. Cat Connect technologies offers improvements in these key areas: Equipment Management – increase uptime and reduce operating costs. Productivity – monitor production and manage job site efficiency. Safety – enhance job site awareness to keep your people and equipment safe.

COMPACT Technologies
COMPACT technologies combine advanced compaction measurement, in-cab guidance and reporting capabilities to help you consistently meet compaction targets fast, uniformly, and in fewer passes – saving on fuel and the cost of unnecessary rework.

Cat Compaction Control
The factory Cat Compaction Control system uses Machine Drive Power (MDP) technology to measure rolling resistance and correlates it with soil stiffness. MDP works in both cohesive or granular soils. Optional 3D mapping system maps compaction measurements to the precise location the operator is working, providing a real-time view of progress, and a record of compaction uniformity.

Cat Compaction Control


LINK Technologies
LINK technologies wirelessly connect you to your equipment, giving you valuable insight into how your machine or fleet is performing so you can make timely, fact-based decisions that can boost job site efficiency and productivity.

LINK Technologies


Product Link™/VisionLink®
Product Link is deeply integrated into your machine, giving you access to timely information like machine location, hours, fuel usage, idle time and event codes via the online VisionLink user interface can help you effectively manage your fleet and lower operating costs.

Product Link™/VisionLink®


DETECT Technologies
DETECT technologies help keep people and equipment safe by enhancing operator awareness of the work area around working equipment and by monitoring and reporting unsafe conditions, like avoidance zones.

Rear Vision Camera
The standard rear vision camera greatly enhances visibility behind the machine to help the operator work more productively. Work with greater confidence and at peak potential while keeping people and assets safe.

Rear Vision Camera


Safety


We are constantly improving our products in an effort to provide a safe work environment for the operator and those who work on your job site. The 825K features an all new stairway access to the cab and key maintenance and service points.

Machine Access
  • Left and right hand stairs are angled to enhance safety for operators getting on and off the 825K.
  • Continuous pass-through with handrails and non-skid surfaces with toe kicks are designed into the service areas.
  • Maintain three points of contact at all times through ground level or platform accessible service areas.

Machine Access


Visibility
  • Optional rearview camera with in-cab monitor increases operator awareness around the machine.
  • Standard cab mounted LED warning strobes

Visibility


Operator Environment
  • Reduced vibrations to the operator with isolated cab mounts and seat mounted implement and steering controls.
  • Low interior sound levels
  • Pressurized cab with filtered air
  • Standard 76 mm (3 in) seat belts on the operator seat

Sustainability


Reducing the Impact to the Environment
The 825K is designed and built with sustainability in mind.
  • Engine Idle Shutdown can help you save fuel by avoiding unnecessary idling.
  • Reduce waste to the environment with our maintenance free batteries.
  • Built for multiple lives, the Cat 825 is one of the most rebuilt products to achieve the second and third life to get the most value from your investment. To assist with maximizing machine life, Caterpillar provides a number of sustainable options such as our Reman and Certified Rebuild programs. In these programs, reused or remanufactured components can deliver cost savings of 40 to 70 percent, which lowers operating cost while benefiting the environment.
  • Caterpillar offers retrofit packages to bring new features to older machines, maximizing your resource. And, when you go through the Cat Certified Rebuild program, these retrofit kits are part of the rebuild process.

Serviceability


We can help you succeed by ensuring your 825K has design features to reduce your downtime.
  • Safe and convenient service with ground level or platform access and grouped service points.
  • Swing-out doors on both sides of the engine compartment provide easy access to important daily service checks.
  • Ecology drains for ease of service and prevention of spills.
  • Reduce downtime with VIMS™ system notifications so your operators and technicians can resolve any problems before failure.
  • Quick visual inspection and minimize fluid contamination with sight gauges.
  • Swing out fuel, hydraulic oil coolers and condenser for easy access cleanout.
  • Ground level power service center with electrical disconnect, emergency engine shutdown, and stairway light switch.
  • Lighting inside the engine compartment improves visibility to service points.

Customer Support


Legendary Cat Dealer Support
A valued partner, your Cat dealer is available whenever you need them.
  • Preventive maintenance programs and guaranteed maintenance contracts
  • Best-in-class parts availability
  • Improve your efficiency with operator training
  • Genuine Cat Remanufactured parts

Operating Costs


Data from customer machines show Cat Soil Compactors are among the most fuel efficient machines in the industry. Several features contribute to this excellent fuel efficiency:
  • ACERT Engine – Advanced engine controls maximizes power and efficiency.
  • Engine Idle Shutdown – Automatic engine and electrical system shutdown conserves fuel.
  • Lockup Torque Converter – Transfers more power to the ground and optimizes fuel efficiency in all applications.
  • Single Clutch Speed Shifting (SCSS) – All new SCSS transmission controls provides greater momentum on grades and fuel savings by carrying that momentum through the shift points.
  • Fuel Tank Capacity minimum of 12 hours operation depending on the application.

EQUIPMENT
Standard Equipment

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 with ACERT Technology: – 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

OPERATOR ENVIRONMENT
  • Camera, rear vision
  • Radio, AM/FM/AUX/USB/BLUETOOTH
  • 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)