Deep Groove Ball Bearings SKF 6406 /C3

The SKF 6406/C3 single-row deep groove ball bearing, with dimensions of 30 × 90 × 23 mm and an increased clearance (C3), offers a robust bearing solution.

The 6406/C3 deep-groove ball bearing is an open rolling bearing from SKF designed to accommodate radial and axial loads. Thanks to its deep raceway geometry, this single-row bearing guides the rolling elements precisely whilst ensuring low friction. Manufactured from standard 100Cr6 bearing steel, the component withstands high mechanical stresses in continuous industrial use. A robust sheet steel cage guides the balls evenly along the raceway. The open design allows for the direct supply of lubricants from the system.

What is the 6406 /C3 deep-groove ball bearing suitable for in industrial plant?

This rolling bearing is suitable for designs subject to high radial forces and moderate axial forces in both directions. Typical applications include shaft and axle bearings in mechanical engineering with centralised oil or grease lubrication. As the bearing has an open design, it connects directly to existing lubrication circuits. This design proves its worth in industrial environments where a robust housing protects the rolling elements from dirt whilst simultaneously ensuring rapid heat dissipation.

What distinguishes the increased C3 bearing clearance in this bearing?

The designation C3 indicates a slightly increased radial bearing clearance compared with the standard version. This clearance compensates for thermal expansion at operating temperatures between –20 and +150 degrees. Tight fits on the shaft or housing also reduce bearing clearance once the bearing is fitted. With tolerance class P0/PN (ABEC 1), the bearing meets standard industrial requirements. When installing the bearing, ensure you include an external housing seal, as this model is not fitted with integrated sealing washers.