SPECS SUMMARY

Gross Power 303 HP (226 kW)
Pumps (1) Dedicated variable displacement pump for travel circuit - 200 cc
Pumps (2) Dedicated variable displacement pump for boom and implement functions - 200 cc
Pumps (3) Electric hydraulic oil fill pump
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.


Specifications

Gross Power 303 HP (226 kW)
Pumps (1) Dedicated variable displacement pump for travel circuit - 200 cc
Pumps (2) Dedicated variable displacement pump for boom and implement functions - 200 cc
Pumps (3) Electric hydraulic oil fill pump
Maximum Reach - With Head 32.5 ft (9.9 m)
Cooling System 10.8 gal (US) (41 l)
Engine Oil 10.3 gal (US) (39 l)
Hydraulic System 118 gal (US) (448 l)
Swing Drive 2.6 gal (US) (10 l)
Fuel Capacity 226 gal (US) (856 l)
Operating Weight - Without Head 59450 lb (26966 kg)
Cab Cab meets FOPS/OPS/ROPS/WCB/OR-OSHA requirements
Pitch 8.5 in (215.9 mm)
Size 330 EX (D7)
Displacement 537 in³ (8.8 l)
Engine Model Cat® C9 ACERT™
Gross Power 303 HP (226 kW)
Gross Power - 1,800 rpm 303 HP (226 kW)
Rated Power - 2,100 rpm 282 HP (210.3 kW)
Track Harvester Configuration - Lift Over Front of Tracks: Bare Pin Lift at Maximum Reach - Without Head 4000 kg @ 9.8 m (8,800 lb @ 32 ft 5 in)
Track Harvester Configuration - Lift Over Front of Tracks: Maximum Reach - With head 32.5 ft (9.9 m)
Track Harvester Configuration - 521B 59450 lb (26966 kg)
521B 102 in (2591 mm)
Track Length 191.1 in (4855 mm)
Ground Clearance 35 in (889 mm)
521B 70500 lb (31978 kg)

Benefits and Features

The B Series track feller bunchers are designed to maximize efficiency and productivity while conserving natural resources.

  • The C9 ACERT engine meets all current U.S. EPA emission standards.
  • The IQAN control system automatically adjusts the Flexxaire fan blade angle, reducing horsepower demand and lowering fuel consumption.
  • Major structures and components are built to be rebuilt, reducing waste and replacement costs.

Caterpillar is known the world over for the quality of customer support from its dealer network - the industry's best. No matter where you are, the expertise of a Cat dealer is always nearby. Your local Cat dealer is your forestry consultant who can recommend the machines, work tools and services to maximize your operation and provide the support to keep you at top productivity.

  • 24-hour parts availability, where and when you need them, to minimize expensive downtime.
  • Remanufactured parts that carry the same warranty as new parts at a reduced cost.
  • Operator training to get the most out of your Cat equipment.
  • Field services to provide on-site help when needed.
  • Timely repair and replacement services.
  • Customer Support Agreements to lower your operating costs.
  • State-of-the-art diagnostic programs, such as S·O·SSM oil analysis, inspection services and trend reporting to help avoid unscheduled repairs.
  • Financing programs for buying, renting or leasing Cat equipment.
  • Cat Access Account, a fast and convenient way to pay for or rent anything offered at any Cat dealer or The Cat Rental Store.
  • Cat Insurance to cover equipment losses from theft, collision, flood, upset or overturn, fire, vandalism and more.
  • Product Link™ to manage your equipment fleet through remote monitoring.
  • Cat Certified Rebuild to get a second life from your equipment.
For more information on Cat products, dealer services and industry solutions, visit www.cat.com.