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HYPRO FG45 Felling Grapple/Energy Felling Grapple

The HYPRO FG45 felling grapple is ideal for use in the handling of both standing and felled trees. The felling grapple can be mounted on just about any crane with a rotator.

The felling grapple can be used to fell normal-height standing trees with a max. diameter of 30–35 cm, and in favourable conditions it has a cutting capacity for trees with enlarged root bulbs and stunted trees of as much as 45 cm in diameter, which makes it entirely unique in terms of function for its low weight and size.

The FG45 is also available in an energy grapple model. This version is equipped with a special bar that allows the felling of coppiced growth and trees with coarse trunks of up to 35 cm.

The FG45 has a tilt function that automatically tilts the grapple into its felling position when it is fully open. This can be overridden by activating the saw, which causes the grapple to return to its horizontal working mode.

The crane’s valve need to be equipped with an extra valve section - an additional function for activating the saw motor. This must be a motor slide type which is open directly to tank in its neutral position.

The versatility of the felling grapple and its hydraulic tilting joint mean that it is easy to get to the tree trunks – and at the right felling angle. This makes the felling operation both simple and very efficient. Its low weight also makes it ideal for use on cranes with a very long reach without negatively affecting stability.

Technical data, FG45

Max. cutting diameter:45 cm
Tilt angle:100°
Weight including tilting joint:169 kg
Hydraulic saw motor:5 cm³/revolution
Min. oil pressure:190 bar
Max. oil pressure:250 bar
Min. required oil flow:50 l/min
Max. required oil flow:80 l/min
Extra hydraulic lines:3

HYPRO FG45FA Felling Grapple/Energy Felling Grapple

The HYPRO FG45FA felling grapple has been developed for minimal hose routing, low weight and high versatility. If equipped with a suitable threechannel rotator it can freely rotate through 360°.

The felling grapple can be used on just about any crane with a rotator, e.g. on trucks, logging trailers or forwarders. It can be used for felling, cross-cutting, loading and unloading timber and thicket alongside roads, along power line corridors, and in park and urban environments, but also of course in conjunction with HYPRO’s tractor processors.

Distinctive features of the HYPRO FG45FA are its fully hydraulic design, with automatic tilt and cross-cutting functions via the “open grapple” and “close grapple” commands, so no additional control system is required in order to operate the felling grapple - just an extra drain line. By means of a hydraulic switch valve, the gripping functions switch over to cutting or tilting following a brief delay. This eliminates the need for multiple valve functions for activating cutting and tilting, while retaining a high level of cutting efficiency. The delay for function switch is adjustable from 0 to 4 seconds. A slightly longer delay is preferable if the grapple is also to be used for loading and unloading felled timber.

Both the cutting and tilt functions are deactivated when the operator releases the control on the joystick. The tilt function and angle for cutting are thereby controllable. Together with the felling grapple's versatility and hydraulic tilting joint, this makes it easy to approach tree trunks or branches at the correct felling angle. The model’s strength is in its tried-and-tested, robust yet low-weight construction, and also in its technical innovation, resulting in a highly efficient product that is nevertheless easy to use.

Technical data, FG45FA

Max. cutting diameter:45 cm
Tilt angle:100°
Weight including tilting joint:179 kg
Hydraulic saw motor:5 cm³/revolution
Min. oil pressure:190 bar
Max. oil pressure:250 bar
Min. required oil flow:50 l/min
Max. required oil flow:80 l/min
Extra hydraulic lines:1