This SAE Standard establishes definitions of specifications most commonly associated with grapple skidders. Specifications common to all articulated, rubber-tired log skidders are included in SAE J1110. The dimensions included in this document are basic and may be supplemented by the individual machine manufacturer. Dimensions shall be stated in SI units. Illustrations used herein are not intended to include all existing commercial machines or to be exactly descriptive of any particular machine. They have been included to facilitate application of this document.