527

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Overview

The Cat 527 Skidder is designed and built specifically for log skidding applications. The 527’s extended track roller frame and weight-forward bias make it well suited for mountainous and soft underfoot logging operations. The skidder’s ergonomic and spacious operator’s environment allow for increased comfort and production. The 527’s standard forestry guarding and undercarriage design ensure the durability required in logging applications. Both Cable and Swing-boom Grapple configurations are provided to suit a wide range of skidding applications.

Engine

Units:
Net Flywheel Power 150.0 hp 112.0 kW Less
Engine Model Cat® 3304 DIT Cat® 3304 DIT Less
Gross Power 166.0 hp 124.0 kW Less
Displacement 425.0 in3 7.0 L Less

Service Refill Capacities

Cooling System 9.7 gal 36.9 L Less
Engine Crankcase and Oil Filter 5.8 gal 22.0 L Less
Final Drive (each side) 1.7 gal 6.5 L Less
Fuel Tank 75.3 gal 285.0 L Less
Hydraulic Tank 10.5 gal 39.8 L Less
Recoil Spring Housing (each side) 7.1 gal 27.0 L Less
Transmission 39.1 gal 148.0 L Less
Winch Sump (527 Winch) 19.5 gal 74.0 L Less

Weights

Operating Weight – Cable 41217.0 lb 18696.0 kg Less
Operating Weight – Grapple 48281.0 lb 21900.0 kg Less

527CA Winch with Freespool

Cable Size – Optional 0.88 in 22.0 mm Less
Cable Size – Recommended 0.75 in 19.0 mm Less
Drum Capacity – Optional Cable 180.0 ft 55.0 m Less
Drum Capacity – Recommended Cable 267.0 ft 81.0 m Less
Drum Diameter 10.0 in 254.0 mm Less
Drum Width 13.0 in 330.0 mm Less
Maximum Linepull 69200.0 lb 31389.0 kg Less
Maximum Linespeed 143.0 ft/min 44.0 m/min Less
Weight 2600.0 lb 1180.0 kg Less

Undercarriage – Cable

Grouser Height 2.56 in 65.0 mm Less
Shoes/Side 41 41 Less
Track Gauge 85.04 in 2160.0 mm Less
Track Rollers/Side 7 7 Less
Track on Ground 112.05 in 2846.0 mm Less
Width of Shoe 22.01 in 559.0 mm Less
Width of Shoe – optional 24.02 in 610.0 mm Less

Undercarriage – Grapple

Grouser Height 2.56 in 65.0 mm Less
Shoes/Side 43 43 Less
Track Gauge 85.04 in 2160.0 mm Less
Track Rollers/Side 8 8 Less
Track on Ground 126.34 in 3209.0 mm Less
Width of Shoe 29.92 in 760.0 mm Less

Transmission

Steering Clutch/Brake Clutch/Brake Less
Torque Converter Type Skidder Skidder Less
Travel Speeds – Fwd. 1st 2.3 mph 3.7 km/h Less
Travel Speeds – Fwd. 2nd 4.1 mph 6.6 km/h Less
Travel Speeds – Fwd. 3rd 7.1 mph 11.5 km/h Less
Travel Speeds – Rev. 1st 2.8 mph 4.6 km/h Less
Travel Speeds – Rev. 2nd 5.1 mph 8.3 km/h Less
Travel Speeds – Rev. 3rd 9.0 mph 14.6 km/h Less

Blades

527 PAT – Blade Capacity* 3.07 yd3 2.35 m3 Less
527 PAT – Blade Height 36.3 in 922.0 mm Less
527 PAT – Blade Width 136.22 in 3460.0 mm Less
5P-PAT – Blade Capacity* 4.93 yd3 3.77 m3 Less
5P-PAT – Blade Height 47.24 in 1200.0 mm Less
5P-PAT – Blade Width 128.82 in 3272.0 mm Less
Blade Types 5P-PAT, 527 PAT 5P-PAT, 527 PAT Less

Dimensions

CA – Overall width without Blade and with 559 mm (22 in) shoes 107.09 in 2720.0 mm Less
GR – Overall width without Blade and with 760 mm (30 in) shoes 118.9 in 3020.0 mm Less

Power Train

Durable, reliable components deliver smooth, responsive power.


Undercarriage

Rugged components for tough skidding conditions.


Application Flexibility

Steep slopes or soft ground are no match for the 527.


Operator Station

Designed for operator comfort, superior control and high productivity.


Hydraulics

Load Sensing System for efficiency and performance.


Customer Support

Cat dealer services help you operate longer with lower costs.


Serviceability

Easy access and minimal maintenance requirements keep your machine on the job.


527 Standard Equipment

ANTIFREEZE
  • 50% concentration of extended life coolant, freeze protection to –37° C (–34° F), anti-boil protection to 108° C (226° F)

ELECTRICAL
  • Hour meter
  • Work lamps, Halogen, 3-front and 2-rear
  • Back-up alarm
  • Warning horn

HYDRAULICS
  • Load sensing hydraulics
  • Single lever blade control

GUARDS
  • Engine enclosures, heavy-duty
  • Fenders, heavy-duty
  • Extreme-service crankcase
  • Fuel tank, heavy-duty
  • Radiator, heavy-duty punched hole
  • Front brush sweeps
  • Precleaner guard

OPERATOR ENVIRONMENT
  • Decelerator
  • Electronic Monitoring System
  • Gauges:
  • Seat, Angled suspension
  • Seat belt

POWER TRAIN
  • 3304 DIT engine
  • 24-volt direct electric start torque converter
  • 3-speed Powershift transmission
  • Precleaner with prescreener
  • Muffler
  • Fuel priming pump

UNDERCARRIAGE
  • End guiding guards
  • Hydraulic track adjusters
  • Segmented Sprocket

527 Optional Equipment

BULLDOZER
  • 5P PAT Blade (Power Angle Tilt)
  • 527 Power Angle Tilt (527CA only)

ELECTRICAL
  • Alternator, 50-amp 24-volt (527CA)
  • Alternator, 75-amp 24-volt (527GR)

GRAPPLE – (527GR)
  • Swing Boom
  • Grapple Bunching, 0.93 m² (10 ft²)
  • Grapple Sorting, 0.83 m² (9 ft²)

GUARDS
  • Vandalism Protection, Canopy
  • Vandalism Protection, Cab
  • Track Guard, 7 Roller
  • Track Guard, 8 Roller
  • Track Guard, Rear
  • Sweep Screen

OPERATOR ENVIRONMENT
  • Canopy, Open ROPS
  • Cab, Enclosed ROPS/FOPS

UNDERCARRIAGE
  • 7-Roller track frames
  • 8-Roller track frames

WINCH – (527CA)
  • 31 388 kg-force (69,200 lb-force) Line pull
  • Winch w/Freespool and 4 Roller Fairlead
  • Winch w/Freespool and Raised 4 Roller Fairlead
  • Winch Omission

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