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Features

Delimbing Quality

H424 Harvester Head delimbing a tree in the forest

The ideal geometry of the harvester heads, along with advanced feeding, stem holding, hydraulics, mechanics and automation, ensure high delimbing quality.

Measuring Accuracy

Front view of H423 Harvester Head in the field

John Deere harvester heads provide the best measuring accuracy in the market. This is a result of seamless co-functioning of the technology of the harvesters and harvester heads – something that is characteristic of John Deere.

High Saw Performance

H425 Harvester Head grips a log in the forest

The John Deere-specific saw unit offers high cutting performance, thanks to the excellent automation, mechanics and hydraulics of John Deere. It also features easy saw chain change, reliable saw chain tensioner, and a wide range of saw bars and lubrication systems.

Specifications

Feed System, Two-Wheel-Drive

Gross Feed Force780-cc motors: 28.1 kN 857-cc motors: 31.1 kN 934-cc motors: 33.9 kN
Gross Feed Force780-cc motors: 6317.1 lb-ft 857-cc motors: 6991.6 lb-ft 934-cc motors: 7621 lb-ft
Maximum Feed Speed4.5-6.0 m/s
Maximum Feed Speed14.7-19.7 fps
Maximum Roller Opening620 mm
Maximum Roller Opening24 in.

Delimbing

Delimbing Knives4 moving, 1 floating, 1 fixed
Delimbing Diameter, Tip To Tip460 mm
Delimbing Diameter, Tip To Tip18 in.
Maximum Opening Upper Knives740 mm
Maximum Opening Upper Knives29 in.
Maximum Opening Lower Knives670 mm
Maximum Opening Lower Knives26 in.

Hydraulic System

Maximum Operating Pressure28 MPa
Maximum Operating Pressure4061.1 psi
Recommended Pump Capacity260-380 L/min
Recommended Pump Capacity68.7-100.4 gpm

Felling/Cutting

SuperCut 100S Saw Unit, Automatic Chain TensioningStandard
Maximum Cut Diameter650 mm
Maximum Cut Diameter25.6 in.
Length Of Saw Bar825 mm
Length Of Saw Bar32.5 in.
Chain Type404
Chain Speed40 m/s
Chain Speed131 fpm

Feed System, Four-Wheel-Drive

Gross Feed Force28–34 kN
Gross Feed Force6,294–7,643 lb-ft

Dimensions

Width, Head Open1660 mm
Width, Head Open65 in.
Width, Head Closed1075 mm
Width, Head Closed42.3 in.
Height Without Rotator and Link1585 mm
Height Without Rotator and Link62.4 in.
Weight Without Rotator and Link1350 kg
Weight Without Rotator and Link2976 lb.

Tank Capacities

Color Marking1.9 L
Color MarkingYes
Color Marking0.5 gal.

Optional Equipment

Stump TreatmentYes
Mense Feed RollersYes
Steel Thumbnail Feed RollersYes
Steel Ribbed Feed RollersYes
Chain And Saw Bar KitsYes
Hydraulic Hose KitNo
Top SawNo