This arrangement provides a groove in the housing for AN rings or a groove in the shaft for BN rings. These grooves capture the ring axially on both sides and simplify assembly. When the shoulder (stepped) diameter is held close to the nominal diameter, the following advantages occur:
Improved alignment of parts during installation
Improved concentricity due to low radial clearance at the shoulder
Excessive radial loads and shock loads can be accommodated since the Tolerance Ring is protected in its own cavity. The corrugations will deflect until the shoulder or stepped diameter contacts the mating member. Additional loading will be transmitted through the step, and will not act to further deflect or crush the corrugations.
Piloted (Half-Centered) Arrangement
This arrangement is similar to the centered configuration, at a lower cost. With the exception of piloting for alignment, this method may provide the advantages of the centered arrangement when the stepped diameter is held close to the nominal diameter of the mating component.
This arrangement will not provide axial support to the ring in either direction, so the assembly machine must be fixtured to "back up" or axially locate the ring temporarily while the mating components are assembled. The Tolerance Ring will be subjected to all radial loading and should be selected with appropriate capacity.
USA TOLERANCE RINGS
85 Route 31 North, Pennington, New Jersey 08534