521B Track Felller Buncher

521B Track Felller Buncher

521B Track Felller Buncher

The new B Series track feller bunchers feature smoother hydraulic performance, increased engine HP, a more comfortable operator station and better right side operator visibility. The Cat 521B Series are zero tail swing machines designed for medium to high production clear cut and or select cut on rough terrain. These machines perform in a variety of small through larger tree size applications. A robust undercarriage utilizes proven components, customized for demanding forestry conditions. The unique boom design provides industry leading lift capacity throughout full reach range, a benefit in large timber.

Product Specs

Operating Specifications

Maximum Reach - With Attachment
26.5ft

Weights

Operating Weight - Without Attachment
60629lb

Hydraulic System

Pumps (2)
Dedicated variable displacement pump for travel circuit - 200 cc
Pumps (3)
Dedicated variable displacement pump for boom and implement functions - 200 cc
Pumps (4)
Dedicated variable displacement pump for saw motor - 55 cc
Pumps (1)
Electric hydraulic oil fill pump

Service Refill Capacities

Fuel Capacity
226gal (US)
Cooling System
10.8gal (US)
Engine Oil
10.3gal (US)
Hydraulic System
118gal (US)
Swing Drive
2.6gal (US)

Tractive Effort

521B
70500lb

Boom System

Track Feller Buncher - Lift Over Front of Tracks: Bare Pin Lift at Maximum Reach - Without Head
6100 kg @ 6.2 m (13,500 lb @ 20 ft 6 in)
Track Feller Buncher - Lift Over Front of Tracks: Maximum Reach - With Head
26.5ft

Power Train

Displacement
537in³
Engine Model
Cat® C9 ACERT™
Gross Power
303HP
Gross Power - 1,800 rpm
303HP
Rated Power - 2,100 rpm
282HP

Track Length

Track Length
191.1in

Ground Clearance

Ground Clearance
35in

Track Gauge

521B
102in

Standards

Cab
Cab meets FOPS/OPS/ROPS/WCB/OR-OSHA requirements

Operating Weights - Without Heads, Standard Counterweight

Track Feller Buncher - 521B
60629lb

Undercarriage

Size
330 EX (D7)
Pitch
8.5in

Engine

Gross Power
303HP

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1 (800) 845-9188

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