4300B Drum Chipper

Whole Tree Chipping

4300B Drum Chipper


The 4300B drum chipper is the latest in a long line of high quality chipping and grinding machines produced by Peterson. The 4300B drum chipper is suited for high volume biomass producers who have a wide variety of feed material, from logs up to 26 inches (61 cm) in diameter, to brush and small feedstock.

Powered by a C18 Caterpillar engine, the 4300B Drum Chipper is powered by 765 horsepower (570 kW). At 52,000 pounds (23,586 kg) and 8 feet 4-3/4 inches (255 cm) in width, the 4300B is a high production chipper whose dimensions do not require any oversize permits for road transportation.

The chipper utilizes a 36 inch diameter by 40 inch wide (91 by 102 cm) drum with wear resistant AR450 wear surfaces on the drum pockets and shell. A sloped feed deck makes feeding the chipper easier. The optional material sizing bars and chip accelerator minimize oversize twigs and branches in the chips, and help ensure tight chip packing and fully loaded chip vans.

Traditional babbitt type knife systems are standard equipment. Chip length can be changed from 1/4 to 1-1/4 inches (6 to 32 mm) by adjusting knife extension and feed speed.

The 4300B’s new generation of controls includes Peterson’s high-production Adaptive Control System. The new control panel provides self-diagnosis for faulty sensors and open circuits. Fault indicators make troubleshooting easy. The 4300B control panel features an LCD display that provides the operator the complete engine and system parameters to simplify setup and efficiently operate the machine.

4300B Drum Chipper


The Adaptive Control System Features Intuitive Interfaces

The Adaptive Control System’s large display provides information to make chips more efficiently. On-screen maintenance instructions and self-diagnostics features increase your up-time.

Aggressive Feeding System

A sloped feed deck and three strands of WHD 120 feed chain, paired with an aggressive feed roll make loading the 4300-series easy in all types of material.

Knife Assemblies: At The Heart Of The Chipper

Produced from the highest quality alloy chromium steel, heavy-duty Peterson knife assemblies achieve uniform production of wood chips with high accepts and minimal losses.

Select From 6 or12-Pocket Drum Styles

Featuring durable AR450 wear surfaces, the 4300B comes standard with a 6-pocket drum rotor with one Babbitted knife per pocket. A 12-pocket drum rotor is available for chipping microchips.

The 4300B Featuring an End Load Spout

The 4300B features an End Load spout that is designed to fill a closed top, chip van.

Superior Product Sizing

Peterson’s secondary grate system provides ultra-consistent chip sizing; twigs and small stems which can be difficult to size are easily fractured through our innovative system.

4300B Drum Chipper



36’-1” (110 m)
12’ (367 cm)
Operating Width
11’-3½” (344 cm)
Travel Width
8’-4¾” (255 cm)
Feed Length
8’-2¼” (250 cm)
Feed Height
4’-1” (124 cm)
Feed Conveyor Width
3’-4” (103 cm)
Front to 5th Wheel
2’-2¼” (67 cm)
5th Wheel to Center Axle
27’-8½” (845 cm)
Axle Spacing
2’-2” (67 cm)
5th Wheel Clearance Radius
6’-8” (203 cm)
5th Wheel Height
4’ (122 cm)
Operating Length
3.77' (1121 cm)


Machine Weight*
52,000 lbs (23,586 kg)
*approximate depending on configuration


Caterpillar C18 Tier IV
755 hp (563 kW)
PT Tech HPTO 15 FX
Fuel Tank Capacity
320 gallons (1211 L)
Main Hydraulic Tank Capacity
104 gallons (394 L)

Feed System

Drag Chain
3 Sections WDH120, 12’ long x 37½” wide (366 x 95 cm)
24" high x 40½” wide (61 x 103 cm)
28” diameter (71 cm)
Up to 120 ft/min (3657 cm/min)


, Multiple Knife Options, 1⁄8" to 1 1/4" (3 to 32 mm) Chip Lengths, Top Load Spout, Track Pads: 600 mm wide single or double grouser


36” diameter x 44¾” wide (91 x 114 cm)
6 or 12 (staggered)


Super Singles 385/65R-22.5
Hydraulic Stabilizers
2 standard

Optional Equipment

Grate System with Chip Accelerator
Rear Mount Landing Gear
Auxiliary Air Compressor
Multiple Knife Options
¼” to 1¼” (6 to 32 mm) Chip Length


60 to 120 tons per hour (59 to 109 metric tonnes)*
*Actual output may vary due to moisture content, material density, material size, support equipment, and grate size. Production rates are based on grinding 50 minutes per hour.

Specifications subject to change without notice.

4300B Drum Chipper


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