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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

Hydraulic System

Maximum Operating Pressure28 MPa
Maximum Operating Pressure4061.1 psi
Recommended Pump Capacity260–340 L/min
Recommended Pump Capacity68.7-89.8 gpm

Felling/Cutting

SuperCut 100S Saw Unit, Automatic Chain TensioningStandard
Maximum Cut DiameterStandard: 710 mm With buttress option: 750 mm
Maximum Cut DiameterStandard: 28 in. With buttress option: 29.5 in.
Length Of Saw Bar825/900 mm
Length Of Saw Bar32.5/35.4 in.
Chain Type404
Chain Speed40 m/s
Chain Speed131 fpm

Feed System, Four-Wheel-Drive

Gross Feed Force400 / 627-cc motors: 27 kN 500 / 780-cc motors: 30 kN 315 / 1014-cc motors: 25–42 kN
Gross Feed Force400 / 627-cc motors: 6069.8 lb-ft 500 / 780-cc motors: 6744.3 lb-ft 315 / 1014-cc motors: 5620.2–9442 lb-ft
Maximum Feed Speed2.9–7.0 m/s
Maximum Feed Speed9.5-23 fps
Maximum Roller Opening680 mm
Maximum Roller Opening27 in.

Optional Equipment

Stump TreatmentYes
Multi-Tree-Handling (MTH)Yes
Mense Feed RollersYes
Moipu Feed RollersYes
Steel Thumbnail Feed RollersYes
Steel V-Profile Feed RollersYes
Steel Ribbed Feed RollersYes
Chain And Saw Bar KitsYes
Hydraulic Hose KitYes
Top SawYes

Tank Capacities

Color Marking2.35 L
Color MarkingYes
Color Marking0.6 gal.
Chain Oil9 L
Chain Oil2.4 gal.
Chain Grease1.2 kg
Chain Grease2.6 lb.

Dimensions

Width, Head Open1730 mm
Width, Head Open68 in.
Width, Head ClosedStandard: 1335 mm With buttress option: 1425 mm
Width, Head ClosedStandard: 52.6 in. With buttress option: 56.1 in.
Height Without Rotator and Link1510 mm
Height Without Rotator and Link59.4 in.
Weight Without Rotator and Link1360 kg
Weight Without Rotator and Link2998 lb.

Delimbing

Delimbing Knives4 moving, 2 fixed
Delimbing Diameter, Tip To Tip460 mm
Delimbing Diameter, Tip To Tip18 in.
Maximum Opening Upper Knives680 mm
Maximum Opening Upper Knives27 in.
Maximum Opening Lower Knives730 mm
Maximum Opening Lower Knives29 in.