There are basically two reasons for placing lifting holes on the face of a plate:

  1. The work piece is cut out in its center to such an extent that a lifting magnet can not touch on a large enough area to hold the plate safely. The diameter of a magnet is usual1y between 250-300 mm. This applies specifically to large rings or to large plates.
  2. All heavy plates should have lifting holes in the largest plane portion of the plate, unless there are already suitably tapped holes in the face required in assemb1y of the mold.

The holes should be placed symmetrically about the CG and are best located on the centerline of the longer axis of the part . The exact location of the two holes for lifting can only be determined after the plate is comp1ete1y designed, to ensure that these holes do not interfere with other features of the plate.