Flange bearings, also called "flanged bearings" are used when a shaft axis is perpendicular to the bearing mounting surface. Available in 2, 3, or 4-hole options, Flange bearing offers a method of precise mounting fits and load support. 2-bolt flanged bearings have a diamond shaped flange with 2 mounting holes. Almost all 3-bolt flanged bearings have a rounded mounting flange with three, equally spaced mounting holes. Other hole designs, such as an offset pattern, are also obtainable. 4-bolt flanged bearings have a square or round mounting flange with four mounting holes. Selection of the appropriate flange bearing can be completed with knowledge of the shaft size and radial and thrust load requirements. 

Bearing type choices for Flange bearings include ball bearing, needle roller bearing, plain bearing, and roller bearing. In a roller bearing the rolling element is a ball. Ball bearings are used to provide smooth, low friction motion in rotary applications. Construction is composed of an inner and outer ring, balls, and usually a cage or ball separator. In a needle roller bearing the rolling element is a needle roller. 

Needle roller bearings are developed for radial load applications where a low profile is desired. Bushings / sleeve bearings, also known as journal or plain bearings, are employed to constrain, guide, or reduce friction in rotary or linear applications. They work by way of sliding action instead of the rolling action utilized by ball, roller and needle bearings.

 

As in all of the bearings, proper lubrication is needed to reduce wear and friction. Terms for example fluid film, self-lubricated, hydrostatic, and hydrodynamic are normally designations for plain bearings. In a roller bearing the rolling element is often a roller. Roller bearings are utilized to provide smooth, low friction motion in rotary applications. Construction is made up of an inner and outer ring, rollers, and in most cases a cage or roller separator. The principal kinds of roller bearings are cylindrical, spherical, and tapered. The most typical kind of flange mounted roller bearing is often a spherical roller bearing, that is a self-aligning, double row, combination radial and thrust skf bearing. 

Important dimensions to think about for Flange bearings are shaft size and overall height from your mounting surface. Shaft size specifies maximum diameter of the shaft or maybe the bore diameter of the bearing. Overall height above mounting surface is very important to consider for low clearance applications. Housing material selections for Flanged bearings include pressed steel, stainless-steel, cast iron, and plastic. Bearing material choices include steel, stainless-steel, sintered bronze, graphite or metal alloy, sintered iron, and plastic. The selections for shaft securing solution to Flanged ntn bearings consist of none, setscrew, and locking collar. Lubrication selections include relubricatable and self-lubricating.