825K Soil Compactor | Finning CAT

Benefits & Features

Efficiency and Productivity

See more

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.

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 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

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

See more

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

See more

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.

Tamping Wheels and Tips

See more

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

See more

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

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

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

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

See more

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.

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.

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.

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.

Safety

See more

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.

Visibility

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

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

See more

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

See more

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

See more

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

See more

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

825K 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

825K 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)

Specifications

Select Units

US
Metric

Overview

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.

Engine

Engine Model Cat® C15 ACERT™ Cat® C15 ACERT™
Net Power 405.0 HP 302.0 kW
Bore 5.4 in 137.2 mm
Displacement 927.6 in³ 15.2 l
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 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 435.0 HP 324.0 kW
High Idle Speed 2300.0 r/min 2300.0 r/min
Low Idle Speed 800.0 r/min 800.0 r/min
Maximum Altitude - Without Derating (Tier 3 Final/Stage IIIA Equivalent) 9098.0 ft 2773.0 m
Maximum Altitude - Without Derating (Tier 4 Final/Stage IV) 9298.0 ft 2834.0 m
Maximum Net Torque - 1,300 rpm 1478.8 lb/ft 2005.0 N·m
Net Power - Converter Drive - Gross Power 435.0 HP 324.0 kW
Net Power - Converter Drive - Torque Rise 8.5% 8.5%
Net Power - Direct Drive - Gross Power 412.0 HP 307.0 kW
Net Power - Direct Drive - Torque Rise 33% 33%
Rated Power (Net ISO 9249) 405.0 HP 302.0 kW
Rated Power (Net SAE J1349) 405.0 HP 302.0 kW
Stroke 6.7 in 171.4 mm

Operating Specifications

Operating Weight 78326.0 lb 35528.0 kg
Operating Weight - Tier 3 Final/Stage IIIA Equivalent 77340.0 lb 35081.0 kg
Operating Weight - Tier 4 Final/Stage IV 78326.0 lb 35528.0 kg

Axles

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

Blades

Blade Tilt Angle - Left - Hydraulic 5.4° 5.4°
Blade Tilt Angle - Left - Mechanical 4.1° 4.1°
Blade Tilt Angle - Left Full 10.1° 10.1°
Blade Tilt Angle - Right - Hydraulic 6.3° 6.3°
Blade Tilt Angle - Right - Mechanical 5.1° 5.1°
Blade Tilt Angle - Right Full 10.8° 10.8°
Blade Tip Angle - Back 7.5° 7.5°
Blade Tip Angle - Forward 7.3° 7.3°
Blade Tip Angle - Total 14.8° 14.8°
Height - Including Cutting Edge 3.4 ft 1032.0 mm
Maximum Depth of Cut 1.97 ft 602.0 mm
Maximum Lift Above Ground 3.14 ft 958.0 mm
Moldboard - Length 14.4 ft 4390.0 mm
Total Tilt Adjustment 2.9 ft 890.0 mm
Width - Over End Bits 15.18 ft 4628.0 mm

Brakes

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

Cab - Standard

Machine Sound Level (ISO 6395) 113.0 dB(A) 113.0 dB(A)
Operator Sound Level - ISO 6396 73.0 dB(A) 73.0 dB(A)

Cab - Suppression

Machine Sound Level (ISO 6395) 110.0 dB(A) 110.0 dB(A)
Operator Sound Level - ISO 6396 72.0 dB(A) 72.0 dB(A)

Dimensions (Approximate)

Centerline of Rear Axle to Edge of Counterweight 9.3 ft 2830.0 mm
Ground Clearance 1.6 ft 492.0 mm
Ground Clearance - Bumper 2.7 ft 810.0 mm
Height - ROPS/Canopy 13.3 ft 4059.0 mm
Height - Top of Beacon 14.4 ft 4381.0 mm
Height - Top of Exhaust Pipe 14.1 ft 4290.0 mm
Height - Top of Hood 10.4 ft 3162.0 mm
Hitch to Centerline of Front Axle 6.1 ft 1850.0 mm
Length - With Blade on Ground 28.1 ft 8561.0 mm
Turning Radius - Inside of Push Arms 8.6 ft 2627.0 mm
Wheel Base 12.1 ft 3700.0 mm
Width - Over Wheels 11.98 ft 3650.0 mm

Hydraulic System

Cylinders, Double Acting - Lift, Bore and Stroke 120 mm × 1070 mm (4.7 in × 42.1 in) 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) 95.25 mm × 216 mm (3.75 in × 8.5 in)
Main Relief Pressure 3495.0 psi 24100.0 kPa
Maximum Supply Pressure 3495.0 psi 24100.0 kPa
Pump Flow at 1,800 rpm 30.9 gal/min 117.0 l/min

Hydraulic System - Steering

Bore 4.5 in 114.3 mm
Maximum System Flow 170 L/min @ 1,800 rpm (44.9 gal/min @ 1,800 rpm) 170 L/min @ 1,800 rpm (44.9 gal/min @ 1,800 rpm)
Steering Pressure Limited 3481.0 psi 24000.0 kPa
Steering System - Circuit Double Acting – End Mounted Double Acting – End Mounted
Steering System - Pump Piston – Variable Displacement Piston – Variable Displacement
Stroke 22.7 in 576.0 mm
Vehicle Articulation Angle 86 degrees 86 degrees

Service Refill Capacities

Cooling System 30.6 gal (US) 116.0 l
Diesel Exhaust Fluid Tank (Tier 4 Final/Stage IV) 8.5 gal (US) 32.0 l
Differential - Final Drives - Front 26.4 gal (US) 100.0 l
Differential - Final Drives - Rear 29.1 gal (US) 110.0 l
Engine Crankcase 9.0 gal (US) 34.0 l
Fuel Tank 206.6 gal (US) 782.0 l
Hydraulic Tank Only 35.4 gal (US) 134.0 l
Transmission 17.4 gal (US) 66.0 l

Transmission

Transmission Type Planetary – Powershift – ECPC Planetary – Powershift – ECPC
Travel Speeds - Forward - First 3.4 mile/h 5.5 km/h
Travel Speeds - Forward - Second 6.0 mile/h 9.7 km/h
Travel Speeds - Forward - Third 10.7 mile/h 17.2 km/h
Travel Speeds - Reverse - First 3.9 mile/h 6.2 km/h
Travel Speeds - Reverse - Second 6.9 mile/h 11.1 km/h
Travel Speeds - Reverse - Third 12.2 mile/h 19.7 km/h

Wheels

Drum Diameter 4.3 ft 1299.0 mm
Drum Width 3.7 ft 1125.0 mm
Outside Diameter 5.5 ft 1672.0 mm
Tips per Wheel 65 65
Weight 16167.0 lb 7333.0 kg
Width - Over Drums 11.98 ft 3650.0 mm

825K

825K

View Product Downloads

Benefits & Features

Efficiency and Productivity

See more

Decelerator Pedal

Steering and Transmission Integrated Control System (STIC™)

Steering System

Electro Hydraulic Controls

Structures

See more

Robust Structures

Power Train

See more

Cat Planetary Powershift Transmission

Cat Torque Converter (TC) with Lock-up Clutch

Cat C15 ACERT Engine

Tamping Wheels and Tips

See more

Chevron Tamping Tip Design

Compaction

Standard Tips

Symmetrical Tamping Tip Pattern

Cleaner Bars

Adjustable Cleaner Bar Tip

Operator Station

See more

Entry and Exit

Cat Comfort Series III Seat

Control Panel

Environment

Integrated Technologies

See more

COMPACT Technologies

Cat Compaction Control

LINK Technologies

Product Link™/VisionLink®

DETECT Technologies

Rear Vision Camera

Safety

See more

Machine Access

Visibility

Operator Environment

Sustainability

See more

Reducing the Impact to the Environment

Serviceability

See more

We can help you succeed by ensuring your 825K has design features to reduce your downtime.

Customer Support

See more

Legendary Cat Dealer Support

Operating Costs

See more

Equipment

825K Standard Equipment

825K Optional Equipment

Specifications

Overview

Engine

Operating Specifications

Axles

Blades

Brakes

Cab - Standard

Cab - Suppression

Dimensions (Approximate)

Hydraulic System

Hydraulic System - Steering

Service Refill Capacities

Transmission

Wheels

Related Products

Attachments

Customer Stories

Promotions

Social

Branch Locator