4 Bolt Flange Block

Flange mounted bearings are used when a shaft axis is perpendicular to the bearing mounting surface. 4-bolt flanged bearings have a square or round mounting flange with four mounting holes.

Selection of the appropriate bearing can be accomplished with knowledge of the shaft size and radial and thrust load requirements. Important dimensions to consider for flange mounted bearings are shaft size and overall height from the mounting surface. Shaft size specifies the maximum diameter of the shaft or the bore diameter of the bearing. Overall height above mounting surface is important to take into consideration for low clearance applications.

Housing material choices for flange mounted 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 choices for shaft securing method for flange mounted bearings include none, setscrew, and locking collar.

Lubrication choices include relubricatable and self-lubricating.