525D

Building on Caterpillar's 40+ years' experience designing and manufacturing skidders, the Cat® D Series Wheel Skidder delivers more productivity at lower operating cost. Get more wood to the landing faster in a stable machine with a roomy, comfortable environment for the operator. Advanced hydraulics speed up multi-functioning and cycle times and give you more lift capacity. The D Series runs cool and is designed to keep debris from collecting inside the machine. Tilting cab and other access points cut the time needed for daily maintenance and servicing.


SPECIFICATIONS
Engine
Gross Power 203 HP
Displacement 428 in³
Bore 4.13 in
Stroke 5.31 in
Maximum Torque at Rated Speed 922 N-m at 1,400 RPM
Derating Altitude 9843 ft
Electrical System 24V
Battery Quantity 2
Battery - Volts 12V
Battery Capacity 950 CCA
Number of Cylinders 6
Engine Model Cat C7.1 ACERT™


Power Train
Travel Speed - Forward 1 3.5 mile/h
Travel Speed - Forward 2 4.7 mile/h
Travel Speed - Forward 3 6.5 mile/h
Travel Speed - Forward 4 8.8 mile/h
Travel Speed - Forward 5 11.8 mile/h
Travel Speed - Reverse 1 3.5 mile/h
Travel Speed - Reverse 2 6.5 mile/h
Travel Speed - Reverse 3 11.8 mile/h
Travel Speed - Forward 6 12.4 mile/h
Transmission Countershaft Powershift
Transmission Cooler Type Water to Oil


Hydraulic System
Type Load sense, closed center
Pump Type Variable displacement piston pump
Pump Output 58 gal/min


Dimensions
Overall Width - 30.5L-32 133.3 in
Overall Width - 35.5L-32 NOAW 139.1 in
Overall Width - 30.5L-32 2X Ring 126.6 in


Grapple Dimensions
Grapple Capacity 14.4 ft²
Tip to Tip Height 82 in
Tong Ppening 126.2 in
Full Open Height 71.3 in
Minimum Stem Diameter 6.9 in
Full Closed Height 54.4 in


Dimensions
Weight - Cable 41745 lb
Overall Width - 35.5L-32 145.8 in
Weight - Dual Function 45249 lb
Weight - Single Function 44235 lb


Lift Chart
Lift Height, Retracted - Single Function 86.9 in
Lift Lowest, Furthest - Single Function 23.5 in
Ground Level to Axle Centerline* - Single Function 33.2 in
Reach - Highest, Retracted - Single Function 70.3 in
Reach - Lowest, Furthest - Single Function 105 in


Winch - Retrival Winch
Type Hydraulically driven
Maximum Line Speed 134 ft/min
Drum Capacity - 19.0 mm (3/4 in) 195 ft
Drum Capacity - 25.4 mm (1 in) 85 ft
Maximum Line Pull - Bare Drum 40016 lbf
Drum Diameter 9 in
Drum Width 10 in


Winch - Logging Winch
Maximum Line Pull - Bare Drum 40016 lbf
Maximum Line Speed 280 ft/min
Drum Capacity - 19.0 mm (3/4 in) 195 ft
Drum Capacity - 25.4mm (1 in) 85 ft
Type Hydraulically driven
Drum Diameter 9 in
Drum Width 10 in


Service Refill
Fuel Tank 83.2 gal (US)
Cooling System 15.1 gal (US)
Differential - Final Drives - Front 13.7 gal (US)
Differential - Final Drives - Rear 13.7 gal (US)
Engine Oil 7.1 gal (US)
Transmission - Torque Converter 14.3 gal (US)
DEF Tank 5 gal (US)
Differential - Final Drives - Tank 17.2 gal (US)
Differential - Final Drives - Total 32.5 gal (US)


Dimensions
Ground Level to Top Arch/Boom* - Cable 109.6 in
Ground Level to Top Arch/Boom* - Single Function 145.8 in
Ground Level to Top Arch/Boom* - Dual Function 162.8 in
Ground Level to Axle Centerline* 33.2 in
Overall Length - Cable 287.3 in
Overall Length - Single Function 356.3 in
Overall Length - Dual Function 327.6 in
Ground Clearance* 21.7 in
Blade Lift Height* 56.1 in
Blade Dig Depth* 20.8 in
Height - Top of Cab* 133.3 in
Blade Width - Standard 105.4 in
Blade Width - Wide 123.5 in
Overall Width - 30.5L-32 NOAW 126.6 in
Wheel Base 143.8 in


Brakes
Service Enclosed wet single disc
Transmission Cooler Type Spring applied, hydraulically released


Lift Chart
Ground Level to Axle Centerline* - Dual Function 33.2 in
Lift Height, Furthest - Dual Function 75.9 in
Lift Height, Retracted - Dual Function 104.4 in
Lift Lowest, Furthest - Dual Function 11 in
Lift Lowest, Retracted - Dual Function 36.1 in
Reach - Highest, Furthest - Dual Function 114.8 in
Reach - Highest, Retracted - Dual Function 64.7 in
Reach - Lowest, Furthest - Dual Function 99.1 in
Reach - Lowest, Retracted - Dual Function 60.7 in


Service Refill
Parking Brake 14.4 oz


BENEFITS & FEATURES
Cooling System



Power Train



Hydraulics



Structures



Winches



Operator Station



Serviceability



Integrated Technologies



EQUIPMENT
Standard Equipment

Electrical
  • 24V electrical system
  • Alarm, back-up
  • Alternator, 115-amp
  • Batteries, maintenance free (2-1000CCA)
  • Lighting system, halogen (4 total)
  • Main disconnect switch with Diesel Exhaust Fluid (DEF) purge indicator light
  • Starter, electric, heavy duty
  • Starting and charging system
  • Diagnostic connector
Operator Environment
  • Cab, enclosed ROPS, FOPS, and OPS certified
  • HVAC system, high performance
  • Seat, High back air suspension with lap seat belt
  • Power port, 12V
  • Converter, 24V to 12V
  • Beverage holder (2)
  • Headliner with dome light
  • Floormat, non permeable and removable
  • Mirror, rear view
  • Computerized Monitoring System
Powertrain
  • Engine, Cat C7 with ACERT Technology
  • Fuel priming pump, electric
  • Fuel transfer pump (electric)
  • Fuel filters, inline, primary and secondary
  • Air Precleaner, Turbine
  • Air Cleaner, 2-stage
  • Cooling, cross-flow system with stationary cores and swing out panel
  • Reversing cooling fan, hydraulically driven on demand
  • Transmission, countershaft powershift (6F/3R)
  • Lock-up torque converter
  • Lubed for life driveline slipjoint and universal joints
  • Axles, heavy duty Cat inboard planetary approved for wide tires up to 73-44 with chains
  • Differential locks, independent front and rear
  • Four-wheel enclosed disc service brakes
  • Parking brake, hydraulically released, spring applied
  • Fuel tank, high capacity
Hydraulics
  • Load Sense Hydraulics
  • Pumps, variable displacement main and fan
  • Main control valve, high performance and multifuntioning
  • Filter, in-tank return
  • CAT ToughGuard hoses
Other standard equipment
  • Access panels, hinged or removable
  • Articulation lock link
  • Center Hitch, dual tapered roller bearing upper and lower
  • Ecology drains (engine oil, engine coolant, hyd tank, axles, transmission)
  • Fuel fill, ground level
  • Frames, heavy duty
  • Limb risers, heavy duty
  • Segregated compartments, engine/CEM and cooling
  • Product Link
  • Single side engine service
  • S·O·SSM sampling ports
  • Tilt Cab
  • Vandalism protection, lockable doors and cap locks

Optional Equipment

Arch / Boom
  • Cable
  • Single function
  • Dual Function
Winch
  • Retrieval
  • Logging
Blade
  • Standard
  • Wide
Starting Aids
  • Receptacle, jump start
  • Starting, cold weather
Tires
  • 30.5L-32 20PR, NOAW *
  • 30.5L-32 26PR , NOAW*
  • 30.5L-32 20PR , 2X Ring**
  • 30.5L-32 26PR , 2X Ring**
  • 30.5L-32 20PR
  • 30.5L-32 26PR
  • 35.5LB-32 20PR, NOAW*
  • 35.5LB-32 24PR, NOAW*
  • 35.5L-32 20PR
  • 35.5L-32 24PR
  • * NOAW – Narrow Overall Width
  • ** 2X Ring – Inner dual tire rim with integrated dual ring mounting of 24.5L-32 outer tire

HOW CAN WE HELP?
SHARE YOUR FEEDBACK OR ASK A QUESTION
Feel free to ask a question or share a comment about the information on this page.

To help us answer your question or respond to your comment, please enter your email address.