An eccentric rotor arrangement for a cutting device such as a hedge cutter includes a lubrication channel 401 through the drive shaft 201 to facilitate lubrication without the necessity of dismantling the apparatus. The stresses on the drive shaft caused by the presence of a lubrication channel are mitigated by the strengthening of the lower drive shaft 203, the provision of a deadend section 901, extending the lubrication channel so the high stress regions are away from the lubrication outlet, and the termination of the lubrication channel 401 with a substantially dome shaped end 1101.
