4810F Chain Flail Debarker

4810F Chain Flail Debarker


Peterson’s 4810F Chain Flail Debarker tracked chain flail is engineered for optimal efficiency and productivity. With a compact footprint, it is easily maneuverable for repositioning to new job sites. No wonder it’s the machine of choice for in-field chipping.

Increase your productivity and decrease product handling times. The 4810F Chain Flail Debarker is designed to debark multiple logs and works in tandem with a whole tree chipper to produce high quality pulp chips. The 52 ½ inch (58 cm) wide feed throat is capable of processing multiple logs from 2 to 23 inches (5–58 cm) in diameter.

The 4810F Chain Flail Debarker is powered by a Tier III or Tier IV 350 HP (261 kW) CAT C9 engine, and meets all US, Canadian, and European Union emission regulations. With a dedicated 135 gallon (511 l) hydraulic oil tank, and a 175 gallon (662 l) fuel tank, it is capable of running an entire shift without fill-up.

The wide 60” (152 cm) by 19 3/4” a high capacity bark pusher with a 10 second stroke moves the bark and limbs efficiently from the debarking chamber.

What sets the 4810F Chain Flail Debarker apart from the competition? Unequaled efficient bark and branch removal, minimal fiber damage to product, efficient machine operations for minimum fuel usage, and large access doors for easy maintainability. Peterson is unsurpassed with a proven track record for reliability and durability.

Since 1981, Peterson has specialized in developing machinery that turns low grade organic materials into high value products.

4810F Chain Flail Debarker


Easy-to-Service Chain Flails and Replaceable Wear Liners

Upper and lower chain flails strip bark and limbs from the stems, replaceable UHMW wear liners protect the flail housing sidewalls.

Powerful Gear Boxes

The 4810F utilizes high torque gearboxes to drive the upper and lower chain flails—providing 30% more torque than the previous model for efficient bark and branch removal.

IQAN Operating System

The robust and reliable IQAN operating system is easy to use and is weatherproof for the most extreme environments, providing self-diagnostics and engine and system parameters.

High Capacity Bark Pusher

The Bark Pusher has a 60” (152 cm) by 193/4” wide opening with a 10 second stroke moves the bark and limbs efficiently from the debarking chamber.

Wireless, Multi-function Remote Control

Links the 4810F to the Peterson 5900E disc chipper, allowing the operator to control both machines from a single remote.

Tracks Add Mobility!

Tracks are used to provide mobility across a wide range of surfaces and conditions on Peterson horizontal grinders and other equipment.

4810F Chain Flail Debarker



Operating and Travel Length
21' 3" (65m)
Operating Width
10' 1" (307 cm)
Operational and Travel Height
9' 3" (282 cm)
Travel Width
9' 10" (299 cm)
Front Overhang
1' 4" (41 cm)
Back Overhang
6' (183 cm)
Ground Clearance
1' 1" (33 cm)


Total Weight
45,000 lbs (20 411 kg)


CAT C9.3 Tier III or Tier IV
350 HP (261 kW)
Fuel Tank Capacity
175 gal (662 L)
Hydraulic Tank Capacity
135 gal (511 L)

Feed System

Maximum Log Diameter
Feed Opening
52 1/2" (133 cm) x 23" (58 cm)
Floating Direct Drive Upper Feed Roll
Direct Drive Lower Fixed In & Out Feed Rolls
Feed Height
55" (140 cm)
Outfeed Height
55" (140 cm)
up to 155 ft/min (47 m/min)


Upper and Lower Flail Drums
Hydraulic Upper Flail Float
Flail Drum Diameter
10½" (27 cm)
Flail Rods/Drum
5⁄8" (16 mm) x 8 links x 78
Drive Type
400 to 600 rpm
End Discharge Bark Pusher
60" (152 cm) x 19 3/4" (50 cm)


Optional Equipment

Electric Cold Weather Kit
Night Operation Lights
Auto Engine Reversing Fan
Wireless Link to Peterson 5900E

Specifications subject to change without notice.

4810F Chain Flail Debarker


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