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521B Track Felller Buncher

521B Track Felller Buncher

At a Glance

Gross Power
303 HP
Maximum Reach - With Attachment
26.5 ft
Operating Weight - Without Attachment
60629 lb
Pumps (2)
Dedicated variable displacement pump for travel circuit - 200 cc
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Overview

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.

Engine

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Gross Power 303HP

Operating Specifications

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Maximum Reach - With Attachment 26.5ft

Weights

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Operating Weight - Without Attachment 60629lb

Hydraulic System

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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

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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

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521B 70500lb

Boom System

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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

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

Track Length

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Track Length 191.1in

Ground Clearance

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Ground Clearance 35in

Track Gauge

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521B 102in

Standards

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

Operating Weights - Without Heads, Standard Counterweight

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Track Feller Buncher - 521B 60629lb

Undercarriage

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Size 330 EX (D7)
Pitch 8.5in