Four-bolt piloted flange bearing is suitable for areas with high axial loads and high vibration because it can be bolted or screwed down. This is done to prevent axial movement while ensuring the bearing operates in normal condition. In addition, this bearing's unique flange design allows more accessible and proper aligning and mounting. Four-bolt piloted flanges have a circular shape with four holes. This configuration allows higher load accommodation than other styles, such as the 2 bolt flanged
bearing or the 3-bolt bearing. However, just like other bolt flanges
, four-bolt flanges are suitable on a perpendicular mounting surface.