Deep Groove Ball Bearings FAG 6308 -2Z

The FAG 6308 -2Z deep-groove ball bearing is a double-sealed rolling bearing with a 40 mm bore, an outer diameter of 90 mm and a width of 23 mm.

The single-row deep groove ball bearing 6308 -2Z primarily withstands radial loads and supports shafts in mechanical and plant engineering. FAG manufactures this component from roller bearing steel (100Cr6) to tolerance class P0/PN or ABEC 1. Both sides feature non-contacting cover plates made of sheet metal, which reduce the ingress of coarse dirt particles and slow down the escape of lubricant. The integrated sheet steel cage guides the rolling elements within an operating temperature range of -30 to +120 degrees Celsius.

What is the 6308-2Z deep-groove ball bearing suitable for in operation?

Design engineers primarily use this bearing in rotating components where radial forces and high rotational speeds prevail. As the component can also accommodate axial forces in both directions, it serves as a versatile fixed or floating bearing in many shaft guides. Compared with abiding seals, the non-contacting cover plates do not generate any additional friction, which makes them ideal for use at high rotational speeds.

What are the characteristics of the -2Z version cover plates?

The suffix -2Z denotes cover discs made of sheet steel that are pressed in on both sides. These discs protect the interior from particles without coming into contact with the inner ring. As a result, hardly any frictional heat is generated during operation. This design features a standard radial bearing clearance and a smooth outer ring without a flange or groove. Before installation, it is advisable to check whether the non-contacting cover is sufficient for the ambient conditions or whether damp conditions require a contacting seal.