Flange mounted bearings are used when a shaft axis is perpendicular to the bearing mounting surface. Available in 2, 3, or 4-hole configurations, flange mounted bearings provide a method of accurate mounting fits and load support. 2-bolt flanged bearings have a diamond shaped flange with 2 mounting holes. Most 3-bolt flanged bearings have a circular mounting flange with three, equally spaced mounting holes. Other hole configurations, such as an offset pattern, are also available. 4-bolt flanged bearings have a square or round mounting flange with four mounting holes.