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 825 continues our legacy of reliability, performance, safety, operator comfort, serviceability, and efficiency.

Engine

Gross Power (SAE J1995:2014)
435.00 hp
324.00 kW
Net Power (SAE J1349:2011)
405.00 hp
302.00 kW
Net Power (ISO 9249:2007)
405.00 hp
302.00 kW
Engine Power (ISO 14396:2002)
426.00 hp
318.00 kW
Engine Model
Cat® C15
Emissions
U.S. EPA Tier 4 Final / EU Stage V/Korea Stage V and Japan 2014 or Brazil MAR-1, emitting equivalent to U.S. EPA Tier 3/EU Stage IIIA
Rated Speed
1800.00 r/min
1800.00 r/min
Peak Net Torque (1,300) rpm)
1479.00 lbf·ft
2005.00 N·m
Torque Rise
33%
Bore
5.40 in
137.20 mm
Stroke
6.70 in
171.40 mm
Displacement
927.60 in³
15.20 l
High Idle Speed
2300.00 r/min
2300.00 r/min
Low Idle Speed
800.00 r/min
800.00 r/min
Maximum Altitude - Without Derating (Tier 4 Final/Stage V)
9298.00 ft
2834.00 m
Maximum Altitude - Without Derating (Tier 3/Stage IIIA)
9098.00 ft
2773.00 m
Note
Net power advertised is the power available at the flywheel when the engine is equipped with fan at minimum speed, air intake system, exhaust system, and alternator.

Operating Specifications

Maximum Operating Weight (Tier 4 Final/Stage V)
78326.00 lb
35528.00 kg
Maximum Operating Weight (Tier 3/Stage IIIA equivalent)
77340.00 lb
35081.00 kg

Transmission

Transmission Type
Planetary - Powershift - ECPC
Travel Speeds - Forward - First
3.40 mile/h
5.50 km/h
Travel Speeds - Forward - Second
6.40 mile/h
10.30 km/h
Travel Speeds - Forward - Third
11.10 mile/h
17.80 km/h
Travel Speeds - Reverse - First
4.10 mile/h
6.60 km/h
Travel Speeds - Reverse - Second
7.30 mile/h
11.80 km/h
Travel Speeds - Reverse - Third
12.20 mile/h
19.70 km/h

Hydraulic System

Pump Flow at 1,800 rpm
30.90 gpm
117.00 L/min
Main Relief Pressure
3771.00 psi
26000.00 kPa
Maximum Supply Pressure
3495.00 psi
24100.00 kPa
Cylinders, Double Acting - Lift, Bore and Stroke
120 mm x 1070 mm (4.7 in x 42.1 in)
Cylinders, Double Acting - Tilt, Bore and Stroke
95.25 mm x 215 mm (3.75 in x 8.5 in)

Service Refill Capacities

Cooling System
30.60 gal (US)
116.00 l
Engine Crankcase
9.00 gal (US)
34.00 l
Transmission
17.40 gal (US)
66.00 l
Fuel Tank
206.60 gal (US)
782.00 l
Diesel Exhaust Fluid Tank (Tier 4 Final/Stage V)
8.50 gal (US)
32.00 l
Differential - Final Drives - Front
26.40 gal (US)
100.00 l
Differential - Final Drives - Rear
29.10 gal (US)
110.00 l
Hydraulic Tank Only
35.40 gal (US)
134.00 l
Note
Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels** up to: • 20% biodiesel FAME (fatty acid methyl ester) * • 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. * Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer). ** Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. – Cat DEO-ULS™ or oils that meet the Cat ECF-3, API CJ-4, and ACEA E9 specifications are required. – Diesel Exhaust Fluid (DEF) that meets all requirements defined in ISO 22241-1:2006.

Axles

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

Braking System

Service Brakes
Multi Disc Wet (Enclosed) 2 WHL
Parking Brake
Drum and Shoe, Spring Applied, Hydraulic Released

Air Conditioning System

Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. - If equipped with R134a (Global Warming Potential = 1430), the system contains 2.0 kg (4.4 lb) of refrigerant which has a CO2 equivalent of 2.86 metric tonnes (3.15 tons).

Sound Performance - Tier 4 Final / Stage V

Operator Sound Pressure Level (ISO 6396:2008)
73.00 dB(A)
73.00 dB(A)
Machine Sound Power Level (ISO 6395:2008)
113.00 dB(A)
113.00 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)*
72.00 dB(A)
72.00 dB(A)
Machine Sound Power Level (ISO 6395:2008)**
110.00 dB(A)
110.00 dB(A)
Note (1)
* For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives”
Note (2)
** European Union Directive “2000/14/EC” as amended by “2005/88/EC.” and UK Noise Regulation 2001 No. 1701
Note (3)
The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
Note (4)
The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
Note (5)
Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment.

Sound Performance - Tier 3 / Stage IIIA

Operator Sound Pressure Level (ISO 6396:2008)
73.00 dB(A)
73.00 dB(A)
Machine Sound Power Level (ISO 6395:2008)
113.00 dB(A)
113.00 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)*
72.00 dB(A)
72.00 dB(A)
Machine Sound Power Level (ISO 6395:2008)**
110.00 dB(A)
110.00 dB(A)
Note (1)
* For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives”
Note (2)
** European Union Directive “2000/14/EC” as amended by “2005/88/EC.” and UK Noise Regulation 2001 No. 1701
Note (3)
The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
Note (4)
The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
Note (5)
Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment.

Hydraulic System - Steering

Steering System - Circuit
Pilot operated, load sensing
Bore
4.50 in
114.30 mm
Stroke
22.70 in
576.00 mm
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
3481.00 lb/in²
24000.00 Pa
Vehicle Articulation Angle
86 degrees

Blades

Moldboard - Length
14.40 ft
4390.00 mm
Height - Including Cutting Edge
3.40 ft
1032.00 mm
Maximum Depth of Cut
1.97 ft
602.00 mm
Maximum Lift Above Ground
3.14 ft
958.00 mm
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
2.90 ft
890.00 mm
Width - Over End Bits
15.18 ft
4628.00 mm

Wheels

Weight
16167.00 lb
7333.00 kg
Outside Diameter
5.50 ft
1672.00 mm
Drum Diameter
4.30 ft
1299.00 mm
Drum Width
3.70 ft
1125.00 mm
Tips per Wheel
65
Width - Over Drums
11.97 ft
3650.00 mm

Wheels - High Impact

Weight
16610.00 lb
7534.00 kg
Outside Diameter
5.50 ft
1675.00 mm
Drum Diameter
4.30 ft
1299.00 mm
Drum Width
3.80 ft
1125.00 mm
Tips per Wheel
65
Width over Drums
11.97 ft
3650.00 ml

Dimensions (Approximate)

Height - Top of Beacon
14.50 ft
4381.00 mm
Height - Top of Cab Roof
13.40 ft
4059.00 mm
Height - Top of Exhaust Pipe
14.10 ft
4290.00 mm
Height to Top of Hood
10.50 ft
3162.00 mm
Ground Clearance - Bumper
2.80 ft
810.00 mm
Ground Clearance
1.70 ft
492.00 mm
Ground Clearance to Trunnion
1.47 ft
450.00 mm
Length - With Blade on Ground
28.00 ft
8561.00 mm
Centerline of Rear Axle to Bumper
9.30 ft
2830.00 mm
Hitch to Centerline of Front Axle
6.10 ft
1850.00 mm
Wheel Base
12.20 ft
3700.00 mm
Width - Over Wheels
11.12 ft
3650.00 mm
Features

OPERATOR COMFORT AND CONTROL

TOP-TIER SERVICE AND SUPPORT

POWERFUL EFFICIENCY

PRODUCTIVITY WITH TECHNOLOGY

OPTIMIZE COMPACTION

Standard Equipment
  • NOTE
    • Standard and optional equipment may vary. Consult your Cat® dealer for details.
  • POWERTRAIN
    • Advanced Productivity Electronic Control System (APECS)
    • Air-to-air aftercooler
    • Brakes, full hydraulic, enclosed, wet multiple disc service brakes
    • Cat Clean Emissions Module (U.S. EPA Tier 4 Final/EU Stage V only)
    • Electro-hydraulic parking brake
    • Electronic Clutch Pressure Control (ECPC)
    • Engine, Cat C15 configured for two emissions options: Tier 4 Final/Stage V, or emitting equivalent to Tier 3/Stage IIIA
    • Fuel priming pump (electric)
    • Fuel-to-air cooler
    • Ground-level engine shutdown
    • Muffler (under hood) (Tier 3/Stage IIIA equivalent only)
    • Radiator, aluminum modular radiator (AMR)
    • Starting aid (ether)
    • Throttle lock
    • Torque converter with lockup clutch (LUC)
    • Transmission, planetary, with 3F/3R speed range control
    • Axles: – Standard or no-spin rear
  • ELECTRICAL
    • Alarm, back-up
    • Alternator, 150 amp
    • Batteries, maintenance-free (4-1,000 CCA)
    • Electrical system, 24V
    • Ground-level lockable master disconnect switch
    • Lights, directional (rear)
    • Light, warning switched (LED strobe)
    • Lighting system LED, (front and rear)
    • Starter, electric (heavy duty)
    • Auxiliary start receptacle
  • OPERATOR ENVIRONMENT
    • 12V power port for mobile phone or laptop connection
    • Air conditioner
    • Cab, sound-suppressed pressurized
    • Cab door, sliding window (LH)
    • Cat Compaction Control (ready)
    • Cat Detect: Object Detection (ready)
    • Coat and hard hat hooks
    • Fingertip shifting controls
    • Flip-up armrest
    • Heater and defroster
    • Horn, electric
    • Hydraulic controls - seat mounted
    • Implement hydraulic lockout
    • Instrumentation, gauges: – Diesel exhaust fluid (DEF) level (Tier 4 Final/Stage V only) – 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
    • Light, (dome) cab
    • Lunchbox and beverage holders
    • Mirror, internal (panoramic)
    • Mirrors standard or heated, rearview (externally mounted)
    • Radio ready for entertainment: – Antenna – Speakers – Converter (12V, 10-15 amp)
    • Premium plus seat containing forced air heating and cooling, 2-way thigh adjustment, power lumbar and back bolster adjustment, ride stiffness adjustment, dynamic end dampening, and leather finish
    • Seat belt with minder, retractable, 76 mm (3 in) wide
    • Steering and Transmission Integrated Control (STIC™) system with lockout
    • Transmission gear (indicator)
    • Vital Information Management System (VIMS™): – Graphical information display – External data port – Customizable operator profiles – Event indicator light on rear grill
    • Wet-arm wipers/washers (front and rear): – Intermittent wipers (front and rear)
    • Glass (window) - rubber-mounted glass
    • Precleaner, cab powered
  • WHEELS AND CLEANER BARS
    • Cleaner bars with teeth
  • GUARDS
    • Guards, crankcase and powertrain
    • Guard, driveshaft
  • FLUIDS
    • Antifreeze, premixed 50% concentration extended life (–34° C/–29° F)
  • OTHER STANDARD EQUIPMENT
    • Doors, service access (locking)
    • Ecology drains for engine, radiator, transmission, hydraulic tank
    • Engine, crankcase, 500 hour interval with CJ-4 oil
    • Emergency platform egress
    • Fire suppression ready
    • Fuel tank, fast fill, 782 L (207 gal)
    • Hitch, drawbar with pin
    • Hoses, Cat XT™
    • Hydraulic, engine, and transmission oil coolers
    • Oil change system, high speed
    • Oil sampling valves
    • Steering, load sensing
    • Total hydraulic filtration system
    • Vandalism protection caplocks
    • Venturi stack
  • TECHNOLOGY PRODUCTS
    • Product Link™: – cellular, satellite
Optional Equipment
  • NOTE
    • Standard and optional equipment may vary. Consult your Cat® dealer for details.
  • 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)
  • POWERTRAIN
    • Heater, engine coolant, 120V
    • Heater, engine coolant, 240V
  • MISCELLANEOUS
    • CE/UKCA Certification (standard where regulations require it)
    • Plate – year of manufacture
  • SPECIAL ARRANGEMENTS
    • Engine precleaners: – dual stage