Categories ↠ Feller Bunchers ↠ Caterpillar 521

Caterpillar 521 Feller Buncher

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.

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Boom

Bare Pin Lift at Max Reach	15,652.90 lbs (7,100.04 kg)
Lift Capacity at Max Reach	9,039.00 lbs (4,100.03 kg)
Max Reach w/ Head	32.20 ft (9.81 m)

Dimensions

Ground Clearance	2.80 in (7.11 cm)
Height	11.70 ft (3.57 m)
Height - Top of Cab	11.70 ft (3.57 m)
Max Reach	26.60 ft (8.11 m)
Overall Length	28.40 ft (8.66 m)
Overall Width	10.50 ft (3.20 m)
Shipping Length - non tilt	37.80 ft (11.52 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

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

Displacement	537.10 cu in (8,801.51 cu cm)
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

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

Alternator Supplied Amperage	95 amps
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)
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)
Maximum Reach - With Attachment	26.60 ft (8.11 m)
Maximum Reach - With Attachment - Track Harvester Configuration	32.00 ft (9.75 m)
Operating Voltage	24 volts
Operating Weight	57,430.50 lbs (26,050.07 kg)
Operating Weight w/o Attachment	59,710.00 lbs (27,084.03 kg)

Service Refill Capacities

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

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

Ground Clearance	2.80 ft (0.85 m)
Shoe Size	24.10 in (61.21 cm)
Track Gauge	15.80 ft (4.82 m)
Track Length	15.80 ft (4.82 m)
Track Pitch	8.00 in (20.32 cm)
Tractive Effort	70,499.50 lbs (31,978.07 kg)

Weights

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)

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