Felling Grapple Biojack 400S for Excavators

Saw grapple




The felling grapple Biojack 400S with a chainsaw is perfect in forest thinning and energy wood harvesting, as well as for wood loading and sorting. Its compact structure allows it to be used in urban felling, for cutting branches and cutting trees in complete safety.

Sahajkoura 400S kaivureihin

The cut is assured by the chainsaw. After the cut, the saw bar is into the grapple’s chassis, allowing the wood handling. 

Three hydraulic lines are required (pressure, return, and free return straight to the oil tank). The chainsaw is activated with an electric command in cabin, which require an electric cable or wireless control for limitless rotation. 

The EG-kit is the Extra Grapple, the secondary upper grapple, which equips most of the models of these dimensions and offers even more grip power and safety for heavier woods. This option includes also the delimbing grabs for cutting the branches by sliding the grapple from the top to the bottom of the standing trunk, before cutting. This option is recommended for forest felling. 

  • for thinning and harvesting of energy wood, urban felling, e.g. for tree removal around power lines and buildings
  • excellent loading properties
  • flexible work cycle
  • available with TD for unlimited rotation (Turning Device with swivel joint)
  • 1 pressure and 1 return hose, 1 leakage oil line, and 1 power cable or wireless control required
  • available with accumulating grapples or top grapples
  • available with the following excavator couplings: S40, S45, S50, S60 and NTP10
  • base machines: excavators 8-20 t, telescopic handlers, skidsteers

Tecnical data

Weight Biojack 400S 
315 kg
(660 lbs)
Weight Biojack 400SEG 
450 kg
(990 lbs)
Cutting diameter max.
400 mm (16″)
Grapple opening
850 mm (33″)
Total height in the felling position
600 mm (24″)
Oil flow
(saw motor 5 cc or 10 cc)
60-70 L/min or 80-100 L/min
(16-18 or 21-26 gpm)
Operating pressure range (total pressure – back pressure)
200–250 bar
(2900-3625 psi)
Back pressure, max.
20-30 bar
(290-435 psi)
Pressure and return lines, min.
Leakage oil line (drain)

Available with the following features and accessories

NTP10 kiinnike
NTP10 coupling
NTP10 (B20) coupling is available for our grapples
The EG-kit, i.e. the top grapples make it possible to hold even a larger trunk vertical, and to lower it safely onto the ground, e.g. in close proximity to buildings or power lines
Normaalit kourat
Normal grapples
The grapple pair designed for round wood handling
The accumulation grapples (E-kit) can be used to gather several stems at a time, without having to load them, or move them onto a stack in between
CPR Rotaattori
CPR Rotator
Fast and limitless rotation device
Coupling Box 45°
Lightweight and compact box for coupling to excavators
Langaton ohjaus
Wireless control
No electric wire, easy 360° rotation! Radio control from the cabin.
Pyörittäjä TD
TD Turning Device
For urban felling particularly, as well as for electric power line cleaning or any other sensitive work, the Turning Device is the solution
S-Sarjan kiinnikkeet
S Series coupling
The common coupling used on our models are S40, S45, S50, and S60

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