Deep Groove Ball Bearings SKF 6304 -2Z

The SKF 6304-2Z deep groove ball bearing is a single-row rolling bearing with a 20 mm bore, an outer diameter of 52 mm and cover plates on both sides.

The SKF 6304-2Z deep groove ball bearing is suitable for applications involving predominantly radial loads as well as moderate axial forces. Manufactured from standard 100Cr6 bearing steel in the SKF Explorer design, this unit is characterised by smooth raceways. With a 20 mm bore, 52 mm outer diameter and 15 mm width, the bearing complies with standard industrial dimensions. A sheet steel cage guides the rolling elements within a temperature range of -20 to +120 degrees Celsius.

What is the 6304-2Z deep groove ball bearing suitable for in operation?

This single-row deep-groove ball bearing is primarily used at high speeds and with standardised shaft seats. Typical applications include rotating shafts subjected to radial and moderate axial loads in general mechanical engineering. The design without a flange or groove on the outer ring allows for direct installation in cylindrical housing bores. Thanks to the standard radial bearing clearance, the radial play remains within the specified limits at normal operating temperatures.

What is the advantage of the cover plates on both sides of the 6304-2Z?

The suffix -2Z denotes two non-contacting cover plates made of sheet steel, which protect the bearing interior from coarse dirt particles. As the split seals do not come into contact with the inner ring, no additional frictional torque is generated during operation. This enables the bearing to be used at high speeds without incurring additional thermal stress. The bearing has the standard tolerance class P0 or ABEC 1, ensuring compliance with standardised dimensional specifications. Before installation, the permissible temperature range of -20 to +120 degrees Celsius must be taken into account.