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.
Features
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OPERATOR COMFORT AND CONTROL
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TOP-TIER SERVICE AND SUPPORT
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POWERFUL EFFICIENCY
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PRODUCTIVITY WITH TECHNOLOGY
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OPTIMIZE COMPACTION
Specifications
Units for specifications
Engine
| Gross Power (SAE J1995:2014) | 435 hp 324 kW |
|---|---|
| Net Power (SAE J1349:2011) | 405 hp 302 kW |
| Net Power (ISO 9249:2007) | 405 hp 302 kW |
| Engine Power (ISO 14396:2002) | 426 hp 318 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 r/min 1800 r/min |
| Peak Net Torque (1,300) rpm) | 1479 lbf·ft 2005 N·m |
| Torque Rise | 33% |
| Bore | 5.4 in 137.2 mm |
| Stroke | 6.7 in 171.4 mm |
| Displacement | 927.6 in³ 15.2 l |
| High Idle Speed | 2300 r/min 2300 r/min |
| Low Idle Speed | 800 r/min 800 r/min |
| Maximum Altitude - Without Derating (Tier 4 Final/Stage V) | 9298 ft 2834 m |
| Maximum Altitude - Without Derating (Tier 3/Stage IIIA) | 9,098 ft 2773 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 lb 35528 kg |
|---|---|
| Maximum Operating Weight (Tier 3/Stage IIIA equivalent) | 77340 lb 35081 kg |
Transmission
| Transmission Type | Planetary - Powershift - ECPC |
|---|---|
| Travel Speeds - Forward - First | 3.4 mile/h 5.5 km/h |
| Travel Speeds - Forward - Second | 6.4 mile/h 10.3 km/h |
| Travel Speeds - Forward - Third | 11.1 mile/h 17.8 km/h |
| Travel Speeds - Reverse - First | 4.1 mile/h 6.6 km/h |
| Travel Speeds - Reverse - Second | 7.3 mile/h 11.8 km/h |
| Travel Speeds - Reverse - Third | 12.2 mile/h 19.7 km/h |
Hydraulic System
| Pump Flow at 1,800 rpm | 30.9 gal/min 117 l/min |
|---|---|
| Main Relief Pressure | 3771 psi 26000 kPa |
| Maximum Supply Pressure | 3495 psi 24100 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 | 30.6 gal (US) 116 l |
|---|---|
| Engine Crankcase | 9 gal (US) 34 l |
| Transmission | 17.4 gal (US) 66 l |
| Fuel Tank | 206.6 gal (US) 782 l |
| Diesel Exhaust Fluid Tank (Tier 4 Final/Stage V) | 8.5 gal (US) 32 l |
| Differential - Final Drives - Front | 26.4 gal (US) 100 l |
| Differential - Final Drives - Rear | 29.1 gal (US) 110 l |
| Hydraulic Tank Only | 35.4 gal (US) 134 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 |
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| 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). |
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Sound Performance - Tier 4 Final / Stage V
| Operator Sound Pressure Level (ISO 6396:2008) | 73 dB(A) 73 dB(A) |
|---|---|
| Machine Sound Power Level (ISO 6395:2008) | 113 dB(A) 113 dB(A) |
| Operator Sound Pressure Level (ISO 6396:2008)* | 72 dB(A) 72 dB(A) |
| Machine Sound Power Level (ISO 6395:2008)** | 110 dB(A) 110 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 dB(A) 73 dB(A) |
|---|---|
| Machine Sound Power Level (ISO 6395:2008) | 113 dB(A) 113 dB(A) |
| Operator Sound Pressure Level (ISO 6396:2008)* | 72 dB(A) 72 dB(A) |
| Machine Sound Power Level (ISO 6395:2008)** | 110 dB(A) 110 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 | 4.5 in 114.3 mm |
| Stroke | 22.7 in 576 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 lb/in² 24000 Pa |
| Vehicle Articulation Angle | 86 degrees |
Blades
| Moldboard - Length | 14.4 ft 4390 mm |
|---|---|
| Height - Including Cutting Edge | 3.4 ft 1032 mm |
| Maximum Depth of Cut | 1.97 ft 602 mm |
| Maximum Lift Above Ground | 3.14 ft 958 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 | 2.9 ft 890 mm |
| Width - Over End Bits | 15.18 ft 4628 mm |
Wheels
| Weight | 16167 lb 7333 kg |
|---|---|
| Outside Diameter | 5.5 ft 1672 mm |
| Drum Diameter | 4.3 ft 1299 mm |
| Drum Width | 3.7 ft 1125 mm |
| Tips per Wheel | 65 |
| Width - Over Drums | 11.97 ft 3650 mm |
Wheels - High Impact
| Weight | 16,610 lb 7534 kg |
|---|---|
| Outside Diameter | 5.5 ft 1675 mm |
| Drum Diameter | 4.3 ft 1299 mm |
| Drum Width | 3.8 ft 1125 mm |
| Tips per Wheel | 65 |
| Width over Drums | 11.97 ft 3650 ml |
Dimensions (Approximate)
| Height - Top of Beacon | 14.5 ft 4381 mm |
|---|---|
| Height - Top of Cab Roof | 13.4 ft 4059 mm |
| Height - Top of Exhaust Pipe | 14.1 ft 4290 mm |
| Height to Top of Hood | 10.5 ft 3162 mm |
| Ground Clearance - Bumper | 2.8 ft 810 mm |
| Ground Clearance | 1.7 ft 492 mm |
| Ground Clearance to Trunnion | 1.47 ft 450 mm |
| Length - With Blade on Ground | 28.0 ft 8561 mm |
| Centerline of Rear Axle to Bumper | 9.3 ft 2830 mm |
| Hitch to Centerline of Front Axle | 6.1 ft 1850 mm |
| Wheel Base | 12.2 ft 3700 mm |
| Width - Over Wheels | 11.12 ft 3650 mm |
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
Videos
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825K Introduction
