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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General Specifications

Boom

Bare Pin Lift at Max Reach	15,653 lbs (7,100 kg)
Lift Capacity at Max Reach	9,039 lbs (4,100 kg)
Max Reach w/ Head	32 ft (10 m)

Dimensions

Ground Clearance	3 in (7 cm)
Height	12 ft (4 m)
Height - Top of Cab	12 ft (4 m)
Max Reach	27 ft (8 m)
Overall Length	28 ft (9 m)
Overall Width	11 ft (3 m)
Shipping Length - non tilt	38 ft (12 m)
Shipping Length - With Attachment	431 in (1,095 cm)
Shipping Length - Without Attachment	340 in (864 cm)
Width - Minimum	126 in (320 cm)

Dimensions - Track Harvester Configuration

Height - Without Attachment	140 in (356 cm)
Shipping Length - Without Attachment	453 in (1,151 cm)
Width - Minimum - Without Attachment	126 in (320 cm)

Engine

Displacement	537 cu in (8,802 cu cm)
Engine Model	Cat C9 ACERT
Gross Power	284 hp (212 kw)
Net Power	263 hp (196 kw)
Power Measured @	2100 rpm
Rated Power	263 hp (196 kw)

Hydraulic System

Pump Size - Boom, Implements	12 cu in (190 cu cm)
Pump Size - Saw Motor	3 cu in (56 cu cm)
Pump Size - Travel Circuit	12 cu in (200 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 gal (61 l)
Engine Oil Capacity	10 gal (39 l)
Fuel Capacity	140 gal (530 l)
Hydraulic System Fluid Capacity	79 gal (300 l)
Maximum Reach - With Attachment	27 ft (8 m)
Maximum Reach - With Attachment - Track Harvester Configuration	32 ft (10 m)
Operating Voltage	24 volts
Operating Weight	57,431 lbs (26,050 kg)
Operating Weight w/o Attachment	59,710 lbs (27,084 kg)

Service Refill Capacities

Cooling System	16 gal (61 l)
Engine Oil	10 gal (39 l)
Fuel Tank	140 gal (530 l)
Hydraulic System	79 gal (300 l)
Hydraulic Tank	69 gal (262 l)
Pony Fuel Tank - Optional	90 gal (341 l)
Swing Drive	3 gal (10 l)

Track

Ground Clearance	33 in (84 cm)
Track Gauge	102 in (259 cm)
Track Length	189 in (480 cm)
Tractive Effort	70,500 lbs (31,978 kg)
Undercarriage Pitch	8 in (20 cm)
Undercarriage Size	D6H HD

Undercarriage

Ground Clearance	3 ft (1 m)
Shoe Size	24 in (61 cm)
Track Gauge	16 ft (5 m)
Track Length	16 ft (5 m)
Track Pitch	8 in (20 cm)
Tractive Effort	70,500 lbs (31,978 kg)

Weights

Operating Weight - Without Attachment	59,710 lbs (27,084 kg)
Operating Weight - Without Attachment - Track Harvester Configuration	57,440 lbs (26,054 kg)

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