Deep Groove Ball Bearings SKF 6304

The SKF 6304 deep groove ball bearing is an open, single-row rolling bearing with compact dimensions of 20 × 52 × 15 mm, designed for a wide range of industrial applications.

The SKF 6304 single-row deep groove ball bearing primarily supports radial loads and ensures smooth, even rotation of the shaft. Thanks to its open design without integrated sealing rings, this model is particularly suitable for applications where lubricant is supplied from the outside or where the bearing runs in a sealed oil bath. The integrated sheet steel cage guides the rolling elements precisely whilst minimising friction.

What is the 6304 deep groove ball bearing suitable for in industrial applications?

Design engineers prefer to use this rolling bearing in rotating industrial drives, shaft mountings and general mechanical engineering assemblies. As the bearing is of an open design, it does not generate any frictional torque caused by rubbing seal lips. If you are planning designs with central oil or grease lubrication, the open design allows for unhindered lubricant exchange during operation. Furthermore, the unit can withstand operating temperatures ranging from -20 to +120 degrees.

What are the key considerations for lubrication and installation of the 6304 deep groove ball bearing?

As no seals are fitted at the factory, external housing seals protect the raceways against the ingress of dirt particles and moisture. Manufactured to standard tolerance class P0/PN (equivalent to ABEC 1), it is designed for a precise fit on shafts with a diameter of 20 mm. With normal radial bearing clearance, the Explorer version covers typical fit conditions and standard operating conditions without excessive heat build-up.