Category : Skidders / Yarders ➔ Manufacturer : Caterpillar ➔ Model : 525B ➔
Introducing the Caterpillar 525B Skidder/Yarder, a versatile and powerful machine designed for handling heavy-duty logging operations. With its impressive lifting and reaching capabilities, the 525B offers unmatched efficiency and productivity in challenging forestry environments. Equipped with a robust hydraulic system and a durable powertrain, this skidder/yarder is engineered to tackle tough tasks with ease. Explore the detailed specifications below to discover the superior performance and reliability that the Caterpillar 525B brings to the forestry industry.
Arch
Caterpillar 525B Skidder Arch specifications
Dual Function - Lift Highest, Farthest
72.00 in (182.88 cm)
Dual Function - Lift Highest, Retracted
106.10 in (269.49 cm)
Dual Function - Lift Lowest, Farthest
107.30 in (272.54 cm)
Dual Function - Lift Lowest, Retracted
44.30 in (112.52 cm)
Dual Function - Lift Maximum Reach
45.30 in (115.06 cm)
Dual Function - Reach Highest, Farthest
104.50 in (265.43 cm)
Dual Function - Reach Highest, Retracted
48.90 in (124.21 cm)
Dual Function - Reach Lowest, Farthest
107.30 in (272.54 cm)
Dual Function - Reach Lowest, Retracted
58.70 in (149.10 cm)
Dual Function - Reach Maximum
110.30 in (280.16 cm)
Single Function - Lift Highest, Retracted
85.40 in (216.92 cm)
Single Function - Reach Maximum
99.10 in (251.71 cm)
Dimensions
Caterpillar 525B Skidder Dimensions specifications
Blade Width
8.79 ft (2.68 m)
Drum Capacity At Cable Width
147.64 ft (45.00 m)
Drum Diameter
10.00 in (25.40 cm)
Grapple Capacity - Tongs Tip To Tip
23649.39 ft2
Ground Clearance
1.52 ft (0.46 m)
Height
10.51 ft (3.20 m)
Height Of Grapple From Ground
9.50 ft (2.90 m)
Height To Top Of Cab
10.61 ft (3.23 m)
Length
20.14 ft (6.14 m)
Max Line Pull - Bare Drum
39,341.57 lbs (17,841.98 kg)
Max Line Speed
339.9 ft/min
Overall Length
21.29 ft (6.49 m)
Overall Width
11.11 ft (3.39 m)
Reach Of Grapple At Ground Level
8.95 ft (2.73 m)
Single Function Arch
_ -
Tong Opening At Tips
8.34 in (21.18 cm)
Weight
36,000.00 lbs (16,329.35 kg)
Wheel Base
11.60 ft (3.54 m)
Wheelbase
11.60 ft (3.54 m)
Width
11.08 ft (3.38 m)
Engine
Caterpillar 525B Skidder Engine specifications
Air Cleaner
dry centrifugal precleaner
Battery - Volts
12 V
Battery Capacity
950 CCA
Battery Quantity
2
Bore
4.40 in (11.18 cm)
Derating Altitude
10,663.00 ft (3,250.08 m)
Displacement
441.80 cu in (7,239.82 cu cm)
Electrical System
24 V
Engine Make
2236
Engine Model
3126 DITA Diesel
Fan Speed
1909 rpm
Fan Type
blower
Governed Speed At Rated Power
2200 rpm
Gross Power
180.00 hp (134.23 kw)
Gross Power - Sae J1995
180.00 hp (134.23 kw)
Maximum Torque At Rated Speed
779.1 @ 1400 Nm
Net Flywheel Power
160.00 hp (119.31 kw)
Net Power
160.00 hp (119.31 kw)
Net Power - Iso 9249
160.00 hp (119.31 kw)
Net Power - Sae J1349
160.00 hp (119.31 kw)
Number Of Cylinders
6
Starting System
direct electric
Stroke
5.00 in (12.70 cm)
Grapple
Caterpillar 525B Skidder Grapple specifications
Bunching - Capacity
12.5 ft2
Bunching - Full Open Height
73.80 in (187.45 cm)
Bunching - Fully Closed Height
60.40 in (153.42 cm)
Bunching - Minimum Stem Diameter
5.30 in (13.46 cm)
Bunching - Tip To Tip Height
89.10 in (226.31 cm)
Bunching - Tong Opening
120.00 in (304.80 cm)
Sorting - Full Open Height
61.50 in (156.21 cm)
Sorting - Fully Closed Height
72.00 in (182.88 cm)
Sorting - Minimum Stem Diameter
3.00 in (7.62 cm)
Sorting - Tip To Tip Height
86.50 in (219.71 cm)
Sorting - Tong Opening
100.00 in (254.00 cm)
Sorting Capacity
9 ft2
Hydraulic
Caterpillar 525B Skidder Hydraulic specifications
Pump Type
Axial Piston
Hydraulic System
Caterpillar 525B Skidder Hydraulic System specifications
Circuit Type
closed cntr, load sensing
Dozer Cylinder - Bore
4.00 in (10.16 cm)
Dozer Cylinder - Rod Diameter
2.30 in (5.84 cm)
Dozer Cylinder - Stroke
18.40 in (46.74 cm)
Dozer Valve
direct linkage control
Grapple Valve
3or4 stack, pilot control
Pump Output
50.00 gpm (189.25 lpm)
Pump Type
axial piston
Relief Valve Setting
3045 psi
Reservoir Tank Capacity
16.50 gal (62.45 l)
Steering Cylinder - Bore
3.00 in (7.62 cm)
Steering Cylinder - Rod Diameter
1.80 in (4.57 cm)
Steering Cylinder - Stroke
17.10 in (43.43 cm)
Steering Valve
direct link, non-follow
Operational
Caterpillar 525B Skidder Operational specifications
Cooling System Fluid Capacity
13.20 gal (49.96 l)
Engine Oil Capacity
7.20 gal (27.25 l)
Front Diff Fluid Capacity
13.80 gal (52.23 l)
Fuel Capacity
83.20 gal (314.91 l)
Hydraulic System Fluid Capacity
32.50 gal (123.01 l)
Operating Weight
35,800.00 lbs (16,235.83 kg)
Rear Diff Fluid Capacity
13.80 gal (52.23 l)
Tire Size
30.5 x 32
Transmission Fluid Capacity
14.30 gal (54.13 l)
Power Train
Caterpillar 525B Skidder Power Train specifications
Brakes - Parking Type
drum
Brakes - Service Type
hydraulic, wet disc
Maximum Drawbar Pull
38,730.00 lbs (17,564.63 kg)
Steering, Frame Articulation
hydraulic control
Torque Converter - Model
3308 Lock-up
Torque Converter Type
sngl stg, rotating housing
Transmission
Countershaft 5fwd/3rev
Transmission Cooler Type
Plate
Travel Speed - Forward 1
4.00 mph (6.44 kph)
Travel Speed - Forward 2
5.60 mph (9.01 kph)
Travel Speed - Forward 3
6.80 mph (10.94 kph)
Travel Speed - Forward 4
9.50 mph (15.29 kph)
Travel Speed - Forward 5
17.10 mph (27.52 kph)
Travel Speed - Reverse 1
3.90 mph (6.28 kph)
Travel Speed - Reverse 2
6.50 mph (10.46 kph)
Travel Speed - Reverse 3
11.60 mph (18.67 kph)
Service Refill
Caterpillar 525B Skidder Service Refill specifications
Cooling System
13.20 gal (49.96 l)
Differential - Final Drives - Front
13.80 gal (52.23 l)
Differential - Final Drives - Rear
13.80 gal (52.23 l)
Engine Oil
7.20 gal (27.25 l)
Fuel Tank
83.20 gal (314.91 l)
Hydraulic System - Tank
16.50 gal (62.45 l)
Hydraulic System - Total
32.50 gal (123.01 l)
Mechanical Winch
6.50 gal (24.60 l)
Transmission - Torque Converter
14.30 gal (54.13 l)
Transmission
Caterpillar 525B Skidder Transmission specifications
Max Speed - Forward
17.10 mph (27.52 kph)
Max Speed - Reverse
11.60 mph (18.67 kph)
Number Of Forward Gears
5
Number Of Reverse Gears
3
Weights
Caterpillar 525B Skidder Weights specifications
Est. Operating Weight
35,800.00 lbs (16,235.83 kg)
Winch - Grapple Skidder
Caterpillar 525B Skidder Winch - Grapple Skidder specifications
Drum Capacity - 19.0 Mm (3/4 In)
148.00 ft (45.11 m)
Drum Capacity - 22.2 Mm (7/8 In)
106.00 ft (32.31 m)
Drum Capacity - 25.4mm (1 In)
82.00 ft (24.99 m)
Drum Diameter
10.00 in (25.40 cm)
Drum Width
6.70 in (17.02 cm)
Maximum Line Pull - Bare Drum
39,300.00 lbs (17,823.13 kg)
Maximum Line Speed
340 ft/min
