SEAL ATTACHMENT DEVICE FOR SWING RING

PROBLEM TO BE SOLVED: To provide a seal attachment device for a swing ring of which the outer ring and inner ring can easily be fixed in a seal groove and have higher adhesive performance enough for a seal not to drop out from a seal groove. SOLUTION: Loop seal grooves 10, 11 are formed on an the outer peripheral face of an inner ring 2 and inside peripheral face of an outer ring 3 of a swing bearing 1 that constitute a swing ring, loop seal 8, 9 are formed by inserting a string seat part in the said seal grooves 10, 11, V-shaped groove (forked part) that is open above and below is formed on a part of the seal grooves 10, 11 in which the seal 8, 9 are inserted, projection parts 12, 13 that are fixed in the V-shaped groove are formed on bottoms of the seal grooves 10, 11, the seals 8, 9 are easily fixed in the seal grooves 10, 11 of the inner ring 2 and the outer ring 3 by holding the V-shaped groove and inserting, the V-shaped groove sticks to the projection 12, 13 of the seal grooving 10, 11 by wedge function, thereby adhesive performance is improved enough for the seals 8, 9 not to drop out from the seal grooves 10, 11.