Caterpillar 525 Skidder

Arch

Arch Types 44.3
Dual Function – Lift Highest, Farthest 106 in (269 cm)
Dual Function – Lift Highest, Retracted 15 in (38 cm)
Dual Function – Lift Lowest, Farthest 44 in (113 cm)
Dual Function – Lift Lowest, Retracted 107 in (273 cm)
Dual Function – Lift Maximum Reach 72 in (183 cm)
Dual Function – Reach Highest, Farthest 49 in (124 cm)
Dual Function – Reach Highest, Retracted 105 in (265 cm)
Dual Function – Reach Lowest, Farthest 59 in (149 cm)
Dual Function – Reach Lowest, Retracted 107 in (273 cm)
Dual Function – Reach Maximum 74 in (187 cm)
Single Function – Lift Highest, Retracted 99 in (252 cm)

Dimensions

Drum Capacity at Cable Width 19,800 ft (6,035 m)
Grapple Capacity – tongs tip to tip 10 cu ft (3 cu m)
Height – Top of Cab 2 ft (1 m)
Length 12 ft (4 m)
Max Blade Height 9 in (23 cm)
Max Height of Boom 8 ft (3 m)
Max Line Pull – bare drum 96 lbs (44 kg)
Max Line Speed 5 ft/min (1 m/min)
Overall Length 10 ft (3 m)
Overall Width 10 ft (3 m)
Wheel Base 68 ft (21 m)

Engine

Air Cleaner 24 V
Aspiration 33510.3
Battery – Volts 93 Amp-hr
Battery Capacity blower
Battery Quantity 12 V
Bore 6 in (15 cm)
Derating Altitude 2,200 ft (671 m)
Displacement turbocharged cu in
Electrical System 2
Engine Model 175
Fan Speed hydraulic actuated, oil disc rpm
Fan Type 24 V
Governed Speed at Rated Power dry, dual element rpm
Gross Power 160 hp (119 kw)
Gross Power – SAE J1995 160 hp (119 kw)
Net Flywheel Power 7,500 hp (5,593 kw)
Net Power 2,200 hp (1,641 kw)
Net Power – EEC 80/1269 160 hp (119 kw)
Net Power – ISO 9249 158 hp (118 kw)
Net Power – SAE J1349 179 hp (133 kw)
Power Measured @ 425 rpm
Stroke 160 in (406 cm)
Torque Measured @ 70.1 rpm

Grapple

Bunching – Capacity 9 cu ft (3 cu m)
Bunching – Full Open Height 60 in (153 cm)
Bunching – Fully Closed Height 5 in (13 cm)
Bunching – Minimum Stem Diameter 89 in (226 cm)
Bunching – Tip to Tip Height 120 in (305 cm)
Bunching – Tong Opening 62 in (156 cm)
Sorting – Full Open Height 72 in (183 cm)
Sorting – Fully Closed Height 3 in (8 cm)
Sorting – Minimum Stem Diameter 87 in (220 cm)
Sorting – Tip to Tip Height 100 in (254 cm)
Sorting – Tong Opening 13 in (32 cm)
Sorting Capacity 38,200 cu ft (11,644 cu m)

Hydraulic System

Circuit Type direct link, non-follow
Dozer Cylinder – Bore 14 in (36 cm)
Dozer Cylinder – Rod Diameter 3 in (8 cm)
Dozer Cylinder – Stroke 2 in (5 cm)
Dozer Valve 4
Grapple Valve 45.5
Pump Output 13 gpm (49 lpm)
Pump Type 3000
Relief Valve Pressure 11.5 psi
Relief Valve Setting closed-cntr, var flow
Reservoir Tank Capacity 10 gal (39 l)
Steering Cylinder – Bore 17 in (43 cm)
Steering Cylinder – Rod Diameter direct linkage in
Steering Cylinder – Stroke 2 in (5 cm)
Steering Valve 3

Operating Specifications

Axle Oscillation 85.4 degrees
Cooling System Fluid Capacity 5 gal (19 l)
Engine Oil Capacity 11 gal (42 l)
Front Diff Fluid Capacity 11 gal (42 l)
Fuel Capacity 10 gal (36 l)
Operating Voltage 75 amps
Operating Weight 24 lbs (11 kg)
Rear Diff Fluid Capacity 14 gal (53 l)
Steering Angle 23.1 volts
Tire Size 7.1
Transmission Fluid Capacity 20 gal (74 l)

Power Train

Brakes – Parking Type fully hydraulic control
Brakes – Service Type mechanical shoe
Maximum Drawbar Pull 4 lbs (2 kg)
Steering, Frame Articulation 43500
Torque Converter Type 29891
Transmission Cooler Type 4 fwd/3 rev
Travel Speed – Forward 1 7 mph (10 kph)
Travel Speed – Forward 2 9 mph (15 kph)
Travel Speed – Forward 3 16 mph (26 kph)
Travel Speed – Forward 4 4 mph (6 kph)
Travel Speed – Reverse 1 7 mph (10 kph)
Travel Speed – Reverse 2 12 mph (19 kph)
Travel Speed – Reverse 3 plate mph

Service Refill

Cooling System 18 gal (68 l)
Differential – Final Drives – Front 11 gal (42 l)
Differential – Final Drives – Rear 14 gal (53 l)
Engine Oil 14 gal (53 l)
Fuel Tank 11 gal (42 l)
Hydraulic System – Tank single/dual/cable gal
Hydraulic System – Total 4 gal (15 l)
Mechanical Winch 9 gal (34 l)
Transmission – Torque Converter 5 gal (19 l)

Transmission

Max Speed – Forward 12 mph (19 kph)
Number of Forward Gears 3
Number of Reverse Gears 16.9
Transmission Type 4

Undercarriage

Length of Track on Ground Cat 3304 DIT Diesel ft

Weights

Dozer – Extended Width 100 lbs (45 kg)
Enclosed Cab 1,550 lbs (703 kg)
Est. Operating Weight 630 lbs (286 kg)
Grapple – Sorting .84 m2 / 9.0 ft2 710 lbs (322 kg)
Open ROPS axial piston lbs
Tires – 24.5 x 32, 16 PR 1,476 lbs (670 kg)
Tires – 30.5L x 32, 16 PR 1,630 lbs (739 kg)

Winch – Grapple Skidder

Drum Capacity – 19.0 mm (3/4 in) 12 ft (4 m)
Drum Capacity – 25.4mm (1 in) 15 degrees
Drum Diameter 8 in (20 cm)
Maximum Line Pull – Bare Drum 502 lbs (228 kg)
Maximum Line Speed 199 ft/min (61 m/min)
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