825 Soil Compactor

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.

Key Features

More Comfort. More Performance. More Versatility.

IMPROVED TECHNOLOGY

Boost your productivity with technologies like Cat Compact 3D Mapping and Cat Compaction Control with Machine Drive Power.

DESIGNED FOR SAFETY AND SERVICE

Designed to reduce your service and maintenance costs with longer filter life.

ENHANCED OPERATOR COMFORT

Updated cab with steering transmission integrated control, heated and cooled leather seat, and adjustable settings to help operators work more productively throughout the day.

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Specifications

Gross Power (SAE J1995:2014)	435 hp
Net Power (SAE J1349:2011)	405 hp
Net Power (ISO 9249:2007)	405 hp
Engine Power (ISO 14396:2002)	426 hp
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
Peak Net Torque (1,300) rpm)	1479 lbf·ft
Torque Rise	33%
Bore	5.4 in
Stroke	6.7 in
Displacement	927.6 in³
High Idle Speed	2300 r/min
Low Idle Speed	800 r/min
Maximum Altitude - Without Derating (Tier 4 Final/Stage V)	9298 ft
Maximum Altitude - Without Derating (Tier 3/Stage IIIA)	9098 ft
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.

Maximum Operating Weight (Tier 4 Final/Stage V)	78326 lb
Maximum Operating Weight (Tier 3/Stage IIIA equivalent)	77340 lb

Transmission Type	Planetary - Powershift - ECPC
Travel Speeds - Forward - First	3.4 mile/h
Travel Speeds - Forward - Second	6.4 mile/h
Travel Speeds - Forward - Third	11.1 mile/h
Travel Speeds - Reverse - First	4.1 mile/h
Travel Speeds - Reverse - Second	7.3 mile/h
Travel Speeds - Reverse - Third	12.2 mile/h

Pump Flow at 1,800 rpm	30.9 gal/min
Main Relief Pressure	3771 psi
Maximum Supply Pressure	3495 psi
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)

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

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

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

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).

Operator Sound Pressure Level (ISO 6396:2008)	73 dB(A)
Machine Sound Power Level (ISO 6395:2008)	113 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)*	72 dB(A)
Machine Sound Power Level (ISO 6395:2008)**	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.

Operator Sound Pressure Level (ISO 6396:2008)	73 dB(A)
Machine Sound Power Level (ISO 6395:2008)	113 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)*	72 dB(A)
Machine Sound Power Level (ISO 6395:2008)**	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.

Steering System - Circuit	Pilot operated, load sensing
Bore	4.5 in
Stroke	22.7 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	3481 lb/in²
Vehicle Articulation Angle	86 degrees

Moldboard - Length	14.4 ft
Height - Including Cutting Edge	3.4 ft
Maximum Depth of Cut	1.97 ft
Maximum Lift Above Ground	3.14 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	2.9 ft
Width - Over End Bits	15.18 ft

Weight	16167 lb
Outside Diameter	5.5 ft
Drum Diameter	4.3 ft
Drum Width	3.7 ft
Tips per Wheel	65
Width - Over Drums	11.97 ft

Weight	16610 lb
Outside Diameter	5.5 ft
Drum Diameter	4.3 ft
Drum Width	3.8 ft
Tips per Wheel	65
Width over Drums	11.97 ft

Height - Top of Beacon	14.5 ft
Height - Top of Cab Roof	13.4 ft
Height - Top of Exhaust Pipe	14.1 ft
Height to Top of Hood	10.5 ft
Ground Clearance - Bumper	2.8 ft
Ground Clearance	1.7 ft
Ground Clearance to Trunnion	1.47 ft
Length - With Blade on Ground	28 ft
Centerline of Rear Axle to Bumper	9.3 ft
Hitch to Centerline of Front Axle	6.1 ft
Wheel Base	12.2 ft
Width - Over Wheels	11.12 ft