Single row tapered roller bearing can support a combined radial and axial load. If either a radial load or bi-directional axial load is to be carried, a pair of bearings must be used in a "face-to-face" or "back-to-back" mounting. The axial load carrying capacity of the bearings is largely determined by the contact angle. If the contact angle is larger, then the axial load carrying capacity is higher and vice versa. During equipment assembly, single row bearings can be set to the required clearance (endplay) or preload condition to optimize performance.
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