Face-to-face duplex arrangement Bearings

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Face to face bearing arrangement (also known as “DF arrangement”, “X arrangement”) is a type of duplex bearing arrangement where the two half are placed so that contact angle lines of the bearing converge inwardly. And these contact angle lines form ‘X’ shape, hence called as “X arrangement”.

In face to face arrangement a gap is provided between outer races and when installed, this gap is closed and producing a preload on the bearings. DF arrangement has lower moment stiffness, so they must be spaced sufficiently to provide resistance to moment load.

Face to face bearing arrangement may used to carry .Heavy radial loads, combined radial and thrust loads, reversing thrust load.