Deep Groove Ball Bearings FAG 6309 -MA

The FAG 6309-MA deep-groove ball bearing (45x100x25 mm) combines a robust, externally guided brass cage with thermal resistance up to 150 degrees Celsius.

The 6309-MA deep groove ball bearing is a single-row rolling bearing manufactured by FAG, designed primarily for radial loads. With key dimensions of 45 mm inner diameter, 100 mm outer diameter and 25 mm width, it is one of the more robustly dimensioned bearings. The component is made from standard roller bearing steel (100Cr6) and has a standard radial clearance. In its open design, the bearing allows for flexible lubrication via the surrounding system, whilst withstanding operating temperatures ranging from –30 to +150 degrees.

What is the 6309-MA deep groove ball bearing suitable for in operation?

Design engineers and maintenance personnel select this deep groove ball bearing primarily for industrial applications involving combined loads and higher speeds, where the bearing is continuously lubricated by the existing lubricant. As the outer ring has neither a flange nor a ring groove, the bearing can be quickly fitted into cylindrical housing bores. The single-row design supports not only high radial forces but also moderate axial forces in both directions.

What are the advantages of the MA external brass cage?

The suffix ‘MA’ denotes a solid brass cage that is guided on the outer ring. This design offers high mechanical strength and is suitable for environments subject to vibrations, shock loads or high accelerations. When fitted in oil-lubricated assemblies, the brass material also promotes good emergency running properties. As open roller bearings do not come with sealing washers as standard, the installation location requires an external housing seal to protect against contamination.