CAT 525B Skidder

Dimensions

Overall Length 21.29 ft in (6487 mm)
Overall Width 11.11 ft in (3385.82 mm)
Height To Top Of Cab 10.61 ft in (3233 mm)
Ground Clearance 1.52 ft in (463.3 mm)
Wheelbase 11.6 ft in (3533 mm)
Reach Of Grapple At Ground Level 8.95 ft in (2725.4 mm)
Tong Opening At Tips 8.34 in (2540 mm)
Height Of Grapple From Ground 9.5 ft in (2893 mm)
Single Function Arch _ – (6911 None)
Wheel Base 11.6 ft in (0.3 m)
Max Line Pull – Bare Drum 39341.57 lb (175 kN)
Drum Capacity At Cable Width 147.64 ft in (45 m)
Drum Diameter 10 in (254 mm)
Grapple Capacity – Tongs Tip To Tip 23649.39 ft2 (2197.1 m2)
Height 10.51 ft in (3203.2 mm)
Length 20.14 ft in (6137.15 mm)
Blade Width 8.79 ft in (2678 mm)
Max Line Speed 339.9 ft/min (103.6 m/min)

Engine Details

Number Of Cylinders 6
Engine Make CAT
Engine Model 3126 DITA Diesel
Gross Power 180 hp (134.3 kw)
Net Power 160 hp (119.4 kw)
Displacement 441.8 cu in (7.3 L)
Bore 4.4 in (110 mm)
Stroke 5 in (127 mm)
Net Power – Iso 9249 160 hp (119.4 kw)
Net Power – Sae J1349 160 hp (119.4 kw)
Gross Power – Sae J1995 180 hp (134.3 kw)
Engine Model Cat 3126 DITA diesel
Net Flywheel Power 160 hp (119.4 kw)
Derating Altitude 10663 ft in (3250.1 m)
Governed Speed At Rated Power 2200 rpm
Air Cleaner dry centrifugal precleaner
Electrical System 24 V
Battery Quantity 2
Battery – Volts 12 V
Battery Capacity 950 CCA
Fan Type blower
Starting System direct electric
Maximum Torque At Rated Speed 779.1 @ 1400 Nm
Fan Speed 1909 rpm

Operational Specs

Operating Weight 35800 lb (16238.7 kg)
Fuel Tank Capacity 83.2 gal (315 L)
Cooling System Fluid Capacity 13.2 gal (50 L)
Engine Oil Capacity 7.2 gal (27 L)
Front Diff Fluid Capacity 13.8 gal (52 L)
Rear Diff Fluid Capacity 13.8 gal (52 L)
Transmission Fluid Capacity 14.3 gal (54 L)
Hydraulic System Fluid Capacity 32.5 gal (123 L)
Tire Size 30.5 x 32

Power Train

Brakes – Service Type hydraulic, wet disc
Brakes – Parking Type drum
Steering, Frame Articulation hydraulic control
Maximum Drawbar Pull 38730 lb (17567.7 kg)
Travel Speed – Forward 1 4 mph (6.4 km/h)
Travel Speed – Forward 2 5.6 mph (9 km/h)
Travel Speed – Forward 3 6.8 mph (10.9 km/h)
Travel Speed – Forward 4 9.5 mph (15.3 km/h)
Travel Speed – Reverse 1 3.9 mph (6.2 km/h)
Travel Speed – Reverse 2 6.5 mph (10.5 km/h)
Travel Speed – Reverse 3 11.6 mph (18.6 km/h)
Transmission Cooler Type Plate
Transmission Countershaft 5fwd/3rev
Travel Speed – Forward 5 17.1 mph (27.6 km/h)
Torque Converter – Model 3308 Lock-up
Torque Converter Type sngl stg, rotating housing

Transmission

Number Of Forward Gears 5
Number Of Reverse Gears 3
Max Speed – Forward 17.1 mph (27.6 km/h)
Max Speed – Reverse 11.6 mph (18.6 km/h)

Weights

Est. Operating Weight 35800 lb (16238.7 kg)

Hydraulic System

Pump Type axial piston

Hydraulic

Pump Type Axial Piston

Hydraulic System

Relief Valve Setting 3045 psi
Circuit Type closed cntr, load sensing
Steering Valve direct link, non-follow
Steering Cylinder – Bore 3 in (75.5 mm)
Steering Cylinder – Stroke 17.1 in (432.4 mm)
Steering Cylinder – Rod Diameter 1.8 in (44 mm)
Dozer Valve direct linkage control
Dozer Cylinder – Bore 4 in (100.4 mm)
Dozer Cylinder – Stroke 18.4 in (465.6 mm)
Dozer Cylinder – Rod Diameter 2.3 in (56.7 mm)
Grapple Valve 3or4 stack, pilot control
Pump Output 50 gal/min
Reservoir Tank Capacity 16.5 gal (62.5 L)

Service Refill

Fuel Tank Capacity 83.2 gal (315 L)
Differential – Final Drives – Front 13.8 gal (52 L)
Differential – Final Drives – Rear 13.8 gal (52 L)
Transmission – Torque Converter 14.3 gal (54 L)
Mechanical Winch 6.5 gal (24.5 L)
Cooling System 13.2 gal (50 L)
Hydraulic System – Total 32.5 gal (123 L)
Engine Oil 7.2 gal (27 L)
Hydraulic System – Tank 16.5 gal (62.5 L)

Arch

Dual Function – Lift Maximum Reach 45.3 in (1150.7 mm)
Dual Function – Lift Highest, Farthest 72 in (1828.8 mm)
Dual Function – Lift Highest, Retracted 106.1 in (2695 mm)
Dual Function – Lift Lowest, Farthest 107.3 in (2725.5 mm)
Dual Function – Lift Lowest, Retracted 44.3 in (1125.3 mm)
Dual Function – Reach Highest, Farthest 104.5 in (2654.3 mm)
Dual Function – Reach Highest, Retracted 48.9 in (1242.1 mm)
Dual Function – Reach Lowest, Farthest 107.3 in (2725.5 mm)
Dual Function – Reach Lowest, Retracted 58.7 in (1491 mm)
Single Function – Lift Highest, Retracted 85.4 in (2169.2 mm)
Dual Function – Reach Maximum 110.3 in (2801.7 mm)
Single Function – Reach Maximum 99.1 in (2517.2 mm)

Grapple

Bunching – Full Open Height 73.8 in (1874.6 mm)
Bunching – Fully Closed Height 60.4 in (1532.2 mm)
Bunching – Minimum Stem Diameter 5.3 in (134.7 mm)
Bunching – Tip To Tip Height 89.1 in (2263.2 mm)
Bunching – Tong Opening 120 in (3048 mm)
Sorting – Full Open Height 61.5 in (1562.1 mm)
Sorting – Fully Closed Height 72 in (1828.8 mm)
Sorting – Minimum Stem Diameter 3 in (76.2 mm)
Sorting – Tip To Tip Height 86.5 in (2197.1 mm)
Sorting – Tong Opening 100 in (2540 mm)
Bunching – Capacity 12.5 ft2 (1.2 m2)
Sorting Capacity 9 ft2 (0.9 m2)

Winch – Grapple Skidder

Maximum Line Pull – Bare Drum 39300 lb (17826.2 kg)
Maximum Line Speed 340 ft/min
Drum Capacity – 19.0 Mm (3/4 In) 148 ft in (45.2 m)
Drum Diameter 10 in (254 mm)
Drum Width 6.7 in (170 mm)
Drum Capacity – 22.2 Mm (7/8 In) 106 ft in (32.4 m)
Drum Capacity – 25.4mm (1 In) 82 ft in (25 m)
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