Abstract: An industrial wedge-type gripper mechanism for gripping or releasing objects that has a housing with a piston of a pneumatic cylinder moveable in the housing in longitudinal direction of the housing and a plurality of gripper jaw holders that slide in the housing in a radial or transverse direction and that support the gripper jaws. The gripper jaw holders have inclined slots, and the piston of the pneumatic cylinder is associated with a member that supports rolling bearings rolling and sliding in the inclined slots so that with reciprocations of the piston the rolling bearings exert a camming or wedging action on the walls of the inclined slots and thus cause the gripper jaw holders and thus the gripper jaws to perform gripping or releasing action on the objects.