Overview
The Caterpillar 521 Feller Buncher is a feller buncher listed in the Heavy Equipment Hub equipment database with structured specifications for comparison, research, and machine selection. Key specification points include engine power of 263 hp, reach of 26.58 ft, fuel capacity of 140.1 gal and hydraulic capacity of 79.3 gal. This model can be reviewed for equipment comparison, jobsite planning, fleet research, and specification-based machine selection. Use the full specifications table to compare the Caterpillar 521 Feller Buncher against similar feller buncher models by power, weight, capacity, dimensions, speed, and other technical values.
Key Specifications
Net Power
263
hp
Gross Power
284
hp
Overall Length
28.34
ft
Overall Width
10.50
ft
Full Specifications
50 specs
Dimensions
Bare Pin Lift At Max Reach
15,652.83 ft / 4,770.98 m
Ground Clearance
2.75 ft / 0.84 m
Height to Top of Cab
11.67 ft / 3.56 m
Overall Length
28.34 ft / 8.64 m
Overall Width
10.50 ft / 3.20 m
Shipping Length - With Attachment
431 in / 10,947 mm
Shipping Length - Without Attachment
340 in / 8,636 mm
Track Length
189 in / 4,801 mm
Width - Minimum
126 in / 3,200 mm
Engine
Alternator Supplied Amperage
95 A
Cooling System Fluid Capacity
16.20 gal / 61.3 L
Displacement
537 cu in / 8.8 L
Engine Make
2236
Engine Model
C9 ACERT
Engine Oil Capacity
10.40 gal / 39.4 L
Fuel Capacity
140.10 gal / 530.3 L
Fuel Tank
140 gal / 530.0 L
Gross Power
284 hp / 211.8 kW
Height
11.67 ft / 3.56 m
Hydraulic System Fluid Capacity
79.30 gal / 300.2 L
Hydraulic Tank
69.20 gal / 262.0 L
Max Reach
26.58 ft / 8.10 m
Net Power
263 hp / 196.1 kW
Operating Voltage
24 V
Operating Weight - Without Attachment
59,710 lb / 27,084 kg
Operating Weight - Without Attachment - Track Harvester Configuration
57,440 lb / 26,054 kg
Operating Weight W/O Attachment
59,710 lb / 27,084 kg
Power Measured @
2,100 rpm
Rated Power
263 hp / 196.1 kW
Swing Drive
2.60 deg
Hydraulics
Engine Oil
10.30 gal / 39.0 L
Height - Without Attachment
140 in / 3,556 mm
Net Power
263 hp / 196.1 kW
Pony Fuel Tank - Optional
90 gal / 340.7 L
Pump Size - Boom, Implements
11.60
Pump Size - Saw Motor
3.40
Pump Size - Travel Circuit
12.20
Shipping Length - Without Attachment
453 in / 11,506 mm
Width - Minimum - Without Attachment
126 in / 3,200 mm
Other
Ground Clearance
33 ft / 10.06 m
Maximum Reach - With Attachment
26.60 ft / 8.11 m
Maximum Reach - With Attachment - Track Harvester Configuration
32 ft / 9.75 m
Track Gauge
102 ft / 31.09 m
Undercarriage Pitch
8
Undercarriage Size
6
Cooling System
16.10 gal / 60.9 L
Undercarriage
Shoe Size
24.02 in / 610 mm
Track Gauge
15.76 ft / 4.80 m
Track Pitch
8 in / 203 mm
Tractive Effort
70,499 lb / 31,978 kg
Frequently Asked Questions
How powerful is the Caterpillar 521 Feller Buncher engine? +
The Caterpillar 521 Feller Buncher produces 284 hp (211.8 kW) of engine power. This output is typical for its weight class and designed to handle demanding Feller Buncher work cycles efficiently.
What is the maximum reach of the Caterpillar 521 Feller Buncher? +
The Caterpillar 521 Feller Buncher has a maximum reach along the ground of 26.58 ft (8.10 m), allowing it to work effectively across wide areas without repositioning.
How does the Caterpillar 521 Feller Buncher compare to similar Feller Buncher models? +
You can compare the Caterpillar 521 Feller Buncher side by side with any other model using the Heavy Equipment Hub compare tool. Key comparison points include engine power, operating weight, digging depth, hydraulic flow, and overall dimensions.