A log processing head (10) is provided with a top knife (22) and moveable feed means (16) and delimbing and/or debarking means (18) pushing a log (48) against said top knife (22) by means of actuators (20). In order to allow the top knife (22) to follow the contour of the log (48) without damaging a pin (40) holding the knife (22), a pivot joint (60) is used between the knife (22) and the connection of the pin (44) on the structure (12).
