Category : Feller Bunchers ➔ Manufacturer : Caterpillar ➔ Model : 521 ➔
The Caterpillar 521 Feller Buncher is a powerful and versatile machine designed for efficient logging operations. With a gross power of 284 hp and a maximum reach of 26.6 feet, this machine offers excellent performance capabilities. Its hydraulic system fluid capacity of 79.3 gallons and operating weight of 59,710 pounds make it a reliable choice for a wide range of forestry tasks. Explore further to learn more about the impressive specifications and features of the Caterpillar 521 Feller Buncher.
Boom
Caterpillar 521 Feller Buncher Boom specifications
Bare Pin Lift At Max Reach
15,652.83 lbs (7,100.01 kg)
Dimensions
Caterpillar 521 Feller Buncher Dimensions specifications
Ground Clearance
2.75 in (6.98 cm)
Height
11.67 ft (3.56 m)
Height To Top Of Cab
11.67 ft (3.56 m)
Max Reach
26.58 ft (8.10 m)
Overall Length
28.34 ft (8.64 m)
Overall Width
10.50 ft (3.20 m)
Shipping Length - With Attachment
431.00 in (1,094.74 cm)
Shipping Length - Without Attachment
340.00 in (863.60 cm)
Width - Minimum
126.00 in (320.04 cm)
Dimensions - Track Harvester Configuration
Caterpillar 521 Feller Buncher Dimensions - Track Harvester Configuration specifications
Height - Without Attachment
140.00 in (355.60 cm)
Shipping Length - Without Attachment
453.00 in (1,150.62 cm)
Width - Minimum - Without Attachment
126.00 in (320.04 cm)
Engine
Caterpillar 521 Feller Buncher Engine specifications
Displacement
537.10 cu in (8,801.51 cu cm)
Engine Make
2236
Engine Model
Cat C9 ACERT
Gross Power
284.00 hp (211.78 kw)
Net Power
263.00 hp (196.12 kw)
Power Measured @
2100 rpm
Rated Power
263.00 hp (196.12 kw)
Hydraulic System
Caterpillar 521 Feller Buncher Hydraulic System specifications
Pump Size - Boom, Implements
11.60 cu in (190.09 cu cm)
Pump Size - Saw Motor
3.40 cu in (55.72 cu cm)
Pump Size - Travel Circuit
12.20 cu in (199.92 cu cm)
Operating Specifications
Caterpillar 521 Feller Buncher Operating Specifications specifications
Bare Pin Lift At Maximum Reach - Without Attachment
7100 kg (15600 lb) @ 6.1 m (20 ft)
Bare Pin Lift At Maximum Reach - Without Attachment - Track Harvester Configuration
4100 kg (9100 lb) @ 9 m (29.5 ft)
Maximum Reach - With Attachment
26.60 ft (8.11 m)
Maximum Reach - With Attachment - Track Harvester Configuration
32.00 ft (9.75 m)
Operational
Caterpillar 521 Feller Buncher Operational specifications
Alternator Supplied Amperage
95 amps
Cooling System Fluid Capacity
16.20 gal (61.32 l)
Engine Oil Capacity
10.40 gal (39.36 l)
Fuel Capacity
140.10 gal (530.28 l)
Hydraulic System Fluid Capacity
79.30 gal (300.15 l)
Operating Voltage
24 V
Operating Weight W/O Attachment
59,710.00 lbs (27,084.03 kg)
Service Refill Capacities
Caterpillar 521 Feller Buncher Service Refill Capacities specifications
Cooling System
16.10 gal (60.94 l)
Engine Oil
10.30 gal (38.99 l)
Fuel Tank
140.00 gal (529.90 l)
Hydraulic System
79.30 gal (300.15 l)
Hydraulic Tank
69.20 gal (261.92 l)
Pony Fuel Tank - Optional
90.00 gal (340.65 l)
Swing Drive
2.60 gal (9.84 l)
Track
Caterpillar 521 Feller Buncher Track specifications
Ground Clearance
33.00 in (83.82 cm)
Track Gauge
102.00 in (259.08 cm)
Track Length
189.00 in (480.06 cm)
Tractive Effort
70,500.00 lbs (31,978.30 kg)
Undercarriage Pitch
8.00 in (20.32 cm)
Undercarriage Size
D6H HD
Undercarriage
Caterpillar 521 Feller Buncher Undercarriage specifications
Shoe Size
24.02 in (61.01 cm)
Track Gauge
15.76 ft (4.80 m)
Track Pitch
8.00 in (20.32 cm)
Tractive Effort
70,499.43 lbs (31,978.04 kg)
Weights
Caterpillar 521 Feller Buncher Weights specifications
Operating Weight - Without Attachment
59,710.00 lbs (27,084.03 kg)
Operating Weight - Without Attachment - Track Harvester Configuration
57,440.00 lbs (26,054.38 kg)
