The present disclosure relates to electromechanical surgical systems configured for use with removable disposable loading units and/or single use loading units for clamping, cutting and/or stapling tissue. A force transmitting assembly of surgical instrument 10 transmits a rotation of a rotatable drive member 266 of the surgical instrument to the rotation receiving member 426 of the end effector 400. A distal neck assembly of the surgical instrument includes at least one gear system 280 configured to convert a rotational input of the rotatable drive member into at least two output forces to the end effector； and an articulating neck assembly 230 interconnecting the tubular body 210 and the distal neck housing 236. The articulating neck assembly is configured to enable off-axis articulation of the distal neck assembly. The rotatable drive member extends through the articulating neck assembly.
