Work Tools Move more wood with powerful, flexible Cat grapples and winches. More >> link

Serviceability Ease of service increases productivity. More >> link

Engine The Cat power train delivers top performance, power, and durability. More >> link

Operator Station Easy to operate, fingertip controls, less fatigue More >> link

Customer Support Cat dealer services help you operate longer with lower costs. More >> link

Hydraulics State-of-the-art hydraulic system provides dependable power and maximum efficiency. More >> link

Structures The 525C mainframe, hitch and decking blade are designed and built to surpass the expectations of the logging industry. More >> link

Power Train The integrated Cat power train delivers dependable, relentless pulling power. More >> link

Engine
Net Flywheel Power	182 hp
Dimensions
Wheelbase	139.2 in
Weights
Est Operating Weight	39045 lb
Grapple
Bunching Capacity	12.5 ft2
Thinning Capacity	14.4 ft2
Sorting Capacity	9 ft2
Engine
Engine Model	Cat© C7 ACERT™
Service Refill
Fuel Tank	83.2 gal
Engine
Net Power - ISO 9249	182 hp
Net Power - SAE J1349	182 hp
Gross Power - SAE J1995	196 hp
Displacement	439 in3
Bore	4.33 in
Stroke	5 in
Max Torque @ Rated Speed	896 N-m at 1400 RPM
Derating Altitude	7500 ft
Air Cleaner	Dry precleaner
Alternator	80 amp
Fan Speed	1620 RPM
Fan Type	Blower
Electrical System	24V
Battery - Quantity	2
Battery - Volts	12V
Battery - Capacity	950 CCA
Starting System	Direct electric
Number of Cylinders	6
Engine Make	Caterpillar
Power Train
Travel Speed - Fwd. 1st	4 mph
Travel Speed - Fwd. 2nd	5.6 mph
Travel Speed - Fwd. 3rd	6.8 mph
Travel Speed - Fwd. 4th	9.5 mph
Travel Speed - Fwd. 5th	17.1 mph
Travel Speed - Rev. 1st	3.9 mph
Travel Speed - Rev. 2nd	6.5 mph
Travel Speed - Rev. 3rd	11.6 mph
Torque Converter - Type	Lock-up clutch
Transmission	5 fwd / 3 rev countershaft, powershift
Hydraulic System
Circuit Type	Closed center, variable flow
Pump Type	Axial piston
Pump Output	46 gal/min
Relief Valve Setting	3045 psi
Reservoir Tank Capacity	14.27 gal
Power Train
Steering, frame articulation	+/- 45°
Hydraulic System
Steering Valve	Direct link, non-follow
Steering Cylinder - Bore	3.5 in
Steering Cylinder - Stroke	17.22 in
Steering Cylinder - Rod Diameter	2 in
Dozer Valve	Electro-hydraulic
Dozer Cylinder - Bore	4 in
Dozer Cylinder - Stroke	18.5 in
Dozer Cylinder - Rod Diameter	2.25 in
Grapple Valve	4 or 5 stack, pilot
Arch
Dual Function - Reach Max	52.6 in
Single Function - Reach Max	52.6 in
Arch, Dual Function
Lift highest, retracted	103.3 in
Lift highest, farthest	76.5 in
Lift maximum reach	52.6 in
Lift lowest, retracted	29.6 in
Lift lowest, farthest	10.2 in
Loaded tire radius	33.2 in
Reach highest, retracted	59.6 in
Reach lowest, retracted	57.8 in
Reach lowest, farthest	98 in
Reach highest, farthest	108.9 in
Reach maximum	113.4 in
Arch, Single Function
Lift highest, retracted	87.1 in
Lift lowest, farthest	23.6 in
Loaded tire radius	33.2 in
Reach highest, retracted	64.2 in
Reach lowest, farthest	99.3 in
Grapple, CR - Bunching
Grapple capacity	12.49 ft2
Tip to tip height	75.59 in
Tong opening	120.08 in
Full open height	66.02 in
Minimum stem diameter	6.1 in
Full closed height	50.59 in
Grapple, CR - Thinning
Grapple capacity	14.42 ft2
Tip to tip height	77.99 in
Tong opening	122.99 in
Full open height	72.13 in
Minimum stem diameter	7.48 in
Full closed height	53.98 in
Winch - Grapple Skidder
Max Line Pull - Bare Drum	39342 lb
Max Line Speed	132 ft/min
Drum Capacity 19.0mm (3/4in)	154 ft
Drum Capacity 22.2mm (7/8in)	97 ft
Drum capacity 25.4mm (1in)	91 ft
Drum Diameter	9 in
Drum Width	11 in
Dimensions
Length	329.49 in
Overall width	133.8 in
Height	125.35 in
Ground Clearance	22.9 in
Top roller height (cable)	110 in
Axle height	33.2 in
Rear axle to pin	70.8 in
Length - overall, grapple, dual	300.2 in
Decking blade lift height	54.4 in
Decking blade dig depth	17.95 in
Height - top of cab	125.4 in
Decking blade width	123.5 in
Tread width	103.2 in
Turning radius over tires	236.2 in
Service Refill
Cooling System	15 gal
Differential, Final Drive - Front	13.7 gal
Differential, Final Drive - Rear	13.7 gal
Engine Oil	7.1 gal
Transmission, Torque Converter	14.2 gal
Mechanical Winch	6.5 gal
Hydraulic System - Tank	14.3 gal
Hydraulic System - Total	29.6 gal
Power Train
Brakes - Service Type	Single disc WET enclosed
Brakes - Parking Type	Drum brake on rear output of transmission drop box
Transmission Cooler Type	Plate
Winch - Cable Skidder
Max Line Pull - Bare Drum	41270 lb
Max Line Speed	360 ft/min
Drum Capacity 19.0mm (3/4in)	148 ft
Drum Capacity 22.2mm (7/8in)	105 ft
Drum capacity 25.4mm (1in)	82 ft
Drum Diameter	10 in
Drum Width	11 in
MSC Comments
Spec Date	5/06

Standard Equipment
Electrical
24V electrical system
12V accessory power port
30° swivel, 3 position locking
Instrumentation, Gauges:
Engine coolant temperature
Autograb
Computerized diagnostics and monitoring
Air cleaner, 2-stage with precleaner
Parking
Closed center-load sensing system
Articulation lock link
Operator Environment
Alarm, back-up
Seat, air suspension
Seat belt
Instrumentation, Warning Indicators:
Fuel level
Brake oil pressure
Engine rpm
Brakes
Service, four-wheel enclosed disc
Hitch hoses, Caterpillar ToughGuard™
Brush sweeps, front
Power Train
Alternator, 80 amp
Beverage holder
Instrumentation, Digital Data
Hydraulic oil temperature
Differential locks
Gear and direction
Differential locks (front, rear)
Line filter, full flow return
Decking blade with replaceable bolt-on cutting edge
Hydraulics
Batteries, maintenance free (2-1000CCA)
Cab, ROPS/FOPS certified
Headliner, Floormat, and Domelight
Tachometer
Engine
Odometer
Driveline slipjoint, lubed for life
Hydraulic oil cooler, Spin-on filters
Ecology drains (engine, hyd tank, axles, transmission)
Other standard equipment
Lighting system, exterior lights (4 total)
Computerized Monitoring System
Mirror, rear view
Torque converter oil temperature
Engine oil pressure
Service hour meter
Engine, Cat C7, ACERT Technology, ATAAC
Variable displacement piston pump, 46 gal/min (174.1 L/min)
Engine enclosures, hinged
Main disconnect switch
Steering wheel, tilt and telescoping
Lockup clutch
Fan, blower
Guards, hinged - bottom and radiator
Starter, electric, heavy duty
Electronic transmission mounted controls
Parking brake
Filters, fuel/engine air, primary/secondary
S•O•SSM sampling ports
Starting and charging system
Primary steer pressure
Final drives, inboard planetary
Vandalism protection, lockable doors and cap locks
Diagnostic connector
Secondary steer pressure (if equipped)
Fuel transfer pump (electric)
Horn, warning
Starting aid
Fuel tank, high capacity
System voltage
Lock-up torque converter
Transmission filter bypass
Muffler
Winch freespool (if equipped)
Radiator with clean-out doors
Work lights
Steering, variable flow-modulated 1/4 turn
Transmission, countershaft powershift (5F/3R)
Universal joints, lubed for life

Optional Equipment
Power Train
Standard Gross Power – 146 kW (196 hp)
1st gear – 146 kW (196 hp)
Dual function
Heavy duty (wide tire/chains)
Narrow decking
ROPS, open
Converter, high capacity 12V, 10A continuous, 15A peak
Bunching
Additional 8 (2 front, 2 rear, 2 per side)
30.5L-32, 20 PR
Grapple
Arch
Dual Gross Power
2nd-5th gears – 163 kW (218 hp)
Single function
Standard duty
Wide decking
ROPS, enclosed with heat/AC
Jump start receptacle
Sorting
30.5L-32, 26 PR
Cable skidding
Axles
Cable skidding
Extended decking
Window screens
Thinning
35.5L-32, 20 PR
Blade
Industrial arrangement
Wipers, front and rear
35.5L-32, 26 PR
Cab, enclosed, with window screens
Dual ring capable
Electrical
Narrow overall width options
Fenders, heavy duty
Grapples - Cat Continuous Rotation
Lights
Pre-cleaner, turbine
Starting aid package, cold weather
Steering, secondary
Tires and Tubes, set of four, logger (LS-2)
Water tank
Winch