525D Wheel Skidder

525D Wheel Skidder

525D Wheel Skidder

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.

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Product Specs

Engine

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

Power Train

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

Dimensions

Weight - Dual Function
45249lb
Ground Level to Top Arch/Boom* - Single Function
145.8in
Ground Level to Top Arch/Boom* - Dual Function
162.8in
Ground Level to Axle Centerline*
33.2in
Overall Length - Cable
287.3in
Overall Length - Single Function
356.3in
Overall Length - Dual Function
327.6in
Blade Lift Height*
56.1in
Blade Dig Depth*
20.8in
Height - Top of Cab*
133.3in
Blade Width - Standard
105.4in
Blade Width - Wide
123.5in
Overall Width - 30.5L-32 NOAW
126.6in
Overall Width - 30.5L-32 2X Ring
126.6in
Overall Width - 30.5L-32
133.3in
Overall Width - 35.5L-32 NOAW
139.1in
Overall Width - 35.5L-32
145.8in
Weight - Cable
41745lb
Weight - Single Function
44235lb
Ground Level to Top Arch/Boom* - Cable
109.6in
Ground Clearance*
21.7in
Wheel Base
143.8in

Brakes

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

Winch - Retrival Winch

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

Winch - Logging Winch

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

Service Refill

Transmission - Torque Converter
14.3gal (US)
Parking Brake
14.4oz
Differential - Final Drives - Front
13.7gal (US)
Differential - Final Drives - Rear
13.7gal (US)
Differential - Final Drives - Tank
17.2gal (US)
Differential - Final Drives - Total
32.5gal (US)
Fuel Tank
83.2gal (US)
Cooling System
15.1gal (US)
Engine Oil
7.1gal (US)
DEF Tank
5gal (US)

Lift Chart

Lift Height, Retracted - Single Function
86.9in
Lift Height, Retracted - Dual Function
104.4in
Lift Height, Furthest - Dual Function
75.9in
Lift Lowest, Retracted - Dual Function
36.1in
Lift Lowest, Furthest - Single Function
23.5in
Lift Lowest, Furthest - Dual Function
11in
Ground Level to Axle Centerline* - Single Function
33.2in
Ground Level to Axle Centerline* - Dual Function
33.2in
Reach - Highest, Retracted - Single Function
70.3in
Reach - Highest, Retracted - Dual Function
64.7in
Reach - Lowest, Retracted - Dual Function
60.7in
Reach - Lowest, Furthest - Single Function
105in
Reach - Lowest, Furthest - Dual Function
99.1in
Reach - Highest, Furthest - Dual Function
114.8in

Grapple Dimensions

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

Hydraulic System

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

Worktool Attachments

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

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