Deep Groove Ball Bearings FAG 6307 -C3

The FAG 6307-C3 deep-groove ball bearing, with dimensions of 35 × 80 × 21 mm and increased bearing clearance, is designed for operation under thermal stress.

The 6307-C3 deep-groove ball bearing is a single-row radial ball bearing for demanding rotational movements in industry and the trades. With a bore of 35 mm, an outside diameter of 80 mm and a width of 21 mm, the component primarily transmits radial forces as well as axial loads in both directions. FAG manufactures this rolling bearing from standard rolling bearing steel 100Cr6 with a sheet steel cage. The version without integrated sealing washers allows direct contact with the lubricant selected by the customer.

What is the 6307-C3 deep-groove ball bearing suitable for in industrial plant?

Design engineers prefer to use this open bearing in enclosed assemblies where lubricant circulates via the surrounding housing system. As the design does not require seals, there are no friction losses at the sealing lips. This makes it suitable for applications involving higher speeds. At the same time, the open design requires a clean installation environment to prevent dirt particles and moisture from reaching the raceways and rolling elements unhindered.

What is the advantage of the C3 bearing clearance in the 6307-C3 model?

The suffix ‘C3’ indicates an increased radial bearing clearance compared with the standard version. This increased clearance between the balls and the grooved raceways helps to compensate for thermal expansion when temperature differences occur between the inner and outer rings during operation. Furthermore, the increased bearing clearance reduces the risk of stress in the case of tight fits on the shaft and housing. The bearing covers a temperature range from -20 to +150 degrees and complies with tolerance class P0.