825K Soil Compactor

Overview
Engine Model
Cat® C15 ACERT™
Net Power
405 hp
Operating Weight
78,326 lb
  • Exterior View
  • Interior View

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™
Net Power
405 hp
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
Rated Power (Net SAE J1349)
405 hp
Rated Power (Net ISO 9249)
405 hp
Gross Power
435 hp
Net Power: Direct Drive – Gross Power
412 hp
Net Power - Direct Drive - Torque Rise
33%
Net Power: Converter Drive – Gross Power
435 hp
Net Power - Converter Drive - Torque Rise
8.5%
Maximum Net Torque @ 1,300 rpm
1,479 lbf-ft
Maximum Altitude without Derating (Tier 4 Final/Stage IV)
9,298 ft
Maximum Altitude - Without Derating (Tier 3 Final/Stage IIIA Equivalent)
9,098 ft
Bore
5 in
Stroke
7 in
Displacement
928 in3
High Idle Speed
2,300 rpm
Low Idle Speed
800 rpm
Engine Model
Cat® C15 ACERT™
Net Power
405 HP
Bore
5 in
Displacement
928 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
2,300 r/min
Low Idle Speed
800 r/min
Maximum Altitude - Without Derating (Tier 4 Final/Stage IV)
9,298 ft
Maximum Net Torque - 1,300 rpm
1,479 lb/ft
Net Power - Converter Drive - Gross Power
435 HP
Net Power - Direct Drive - Gross Power
412 HP
Rated Power (Net ISO 9249)
405 HP
Rated Power (Net SAE J1349)
405 HP
Stroke
7 in

Operating Specifications

Operating Weight
78,326 lb
Operating Weight - Tier 4 Final/Stage IV
78,326 lb
Operating Weight - Tier 3 Final/Stage IIIA Equivalent
77,340 lb
Operating Weight
78,326 lb

Transmission

Transmission Type
Planetary – Powershift – ECPC
Travel Speeds: Forward – First
3 mph
Travel Speeds: Forward – Second
6 mph
Travel Speeds - Forward - Third
11 mile/h
Travel Speeds: Reverse – First
4 mph
Travel Speeds: Reverse – Second
7 mph
Travel Speeds - Reverse - Third
12 mile/h
Transmission Type
Planetary – Powershift – ECPC
Travel Speeds - Forward - First
3 mile/h
Travel Speeds - Forward - Second
6 mile/h
Travel Speeds - Reverse - First
4 mile/h
Travel Speeds - Reverse - Second
7 mile/h

Hydraulic System

Pump Flow at 1,800 rpm
31 gal/min
Main Relief Pressure
3,495 psi
Maximum Supply Pressure
3,495 psi
Cylinder, Double-acting: Lift, Bore and Stroke
120 mm × 1070 mm (4.7 in × 42.1 in)
Cylinder, Double-acting: Tilt, Bore and Stroke
95.25 mm × 216 mm (3.75 in × 8.5 in)
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
3,495 psi
Maximum Supply Pressure
3,495 psi

Service Refill Capacities

Cooling System
31 gal
Engine Crankcase
9 gal
Transmission
17 gal
Fuel Tank
207 gal
Diesel Exhaust Fluid Tank (Tier 4 Final/Stage IV)
9 gal
Differentials and Final Drives – Front
26 gal
Differentials and Final Drives – Rear
29 gal
Hydraulic Tank Only
35 gal
Cooling System
31 gal (US)
Diesel Exhaust Fluid Tank (Tier 4 Final/Stage IV)
9 gal (US)
Differential - Final Drives - Front
26 gal (US)
Differential - Final Drives - Rear
29 gal (US)
Engine Crankcase
9 gal (US)
Fuel Tank
207 gal (US)
Hydraulic Tank Only
35 gal (US)
Transmission
17 gal (US)

Axles

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

Brakes

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

Cab – Standard

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

Cab – Suppression

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

Hydraulic System – Steering

Steering System – Circuit
Double Acting – End Mounted
Bore
5 in
Stroke
23 in
Steering System – Pump
Piston – Variable Displacement
Maximum System Flow
170 L/min @ 1,800 rpm (44.9 gal/min @ 1,800 rpm)
Steering Pressure Limited
3,481 psi

Hydraulic System - Steering

Vehicle Articulation Angle
86 degrees
Bore
5 in
Maximum System Flow
170 L/min @ 1,800 rpm (44.9 gal/min @ 1,800 rpm)
Steering Pressure Limited
3,481 psi
Steering System - Circuit
Double Acting – End Mounted
Steering System - Pump
Piston – Variable Displacement
Stroke
23 in

Blades

Moldboard Length
14 ft
Height - Including Cutting Edge
3 ft
Maximum Depth of Cut
2 ft
Maximum Lift Above Ground
3 ft
Blade Tip Angle - Total
14.8°
Blade Tip Angle - Forward
7.3°
Blade Tip Angle - Back
7.5°
Blade Tilt Angle - Right - Mechanical
5.1°
Blade Tilt Angle - Left - Mechanical
4.1°
Blade Tilt Angle - Right - Hydraulic
6.3°
Blade Tilt Angle - Left - Hydraulic
5.4°
Blade Tilt Angle – Right Full
10.8°
Blade Tilt Angle – Left Full
10.1°
Total Tilt Adjustment
3 ft
Width Over End Bits
15 ft
Blade Tilt Angle - Left Full
10.1°
Blade Tilt Angle - Right Full
10.8°
Maximum Depth of Cut
2 ft
Maximum Lift Above Ground
3 ft
Moldboard - Length
14 ft
Width - Over End Bits
15 ft

Wheels

Weight
16,167 lb
Outside Diameter
6 ft
Drum Diameter
4 ft
Drum Width
4 ft
Tips per Wheel
65
Width - Over Drums
12 ft

Dimensions (Approximate)

Height to Top of Beacon
14 ft
Height to Top of Exhaust Pipe
14 ft
Height to Top of Hood
10 ft
Ground Clearance to Bumper
3 ft
Center Line of Rear Axle to Edge of Counterweight
9 ft
Hitch to Center Line of Front Axle
6 ft
Wheelbase
12 ft
Length with Blade on Ground
28 ft
Ground Clearance
2 ft
Width over Wheels
12 ft
Height to ROPS/Canopy
13 ft
Turning Radius - Inside of Push Arms
9 ft
Centerline of Rear Axle to Edge of Counterweight
9 ft
Ground Clearance
2 ft
Ground Clearance - Bumper
3 ft
Height - ROPS/Canopy
13 ft
Height - Top of Beacon
14 ft
Height - Top of Exhaust Pipe
14 ft
Height - Top of Hood
10 ft
Hitch to Centerline of Front Axle
6 ft
Length - With Blade on Ground
28 ft
Wheel Base
12 ft
Width - Over Wheels
12 ft

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)

Efficiency and Productivity

Structures

Power Train

Tamping Wheels and Tips

Operator Station

Integrated Technologies

Safety

Sustainability

Serviceability

Customer Support

Operating Costs

  • 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
  • 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)

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