Deep Groove Ball Bearings SKF 6320 /C3

The SKF 6320/C3 deep groove ball bearing, with a 100 mm bore and increased C3 clearance, offers high load-carrying capacity for industrial applications subject to thermal stress.

The SKF 6320 /C3 single-row deep groove ball bearing primarily accommodates radial loads as well as moderate axial loads in both directions. The open design, without integrated sealing washers, allows for direct lubrication with oil or grease via the surrounding machinery system. Manufactured from standard rolling-element bearing steel (100Cr6), a robust sheet-steel cage guides the rolling elements along the raceway. The bearing is designed for operating temperatures ranging from –20 to +150 degrees Celsius in industrial powertrains.

What is the 6320/C3 deep groove ball bearing suitable for in industrial plant?

The use of this open bearing is primarily recommended for high radial loads on shafts with a diameter of 100 mm. Designs with continuous lubricant circulation utilise the open design, as lubricating oil can reach the rolling elements unhindered and dissipate the heat generated. The cylindrical outer ring, which has no flange or groove, can be fitted directly into suitable housing bores.

What is the function of the increased radial clearance (C3) in the 6320 bearing?

The C3 designation indicates a slightly increased radial bearing clearance compared with the standard version. This additional operating clearance compensates for thermal expansion caused by increased heat generation during operation. If the inner ring is fitted to the shaft with a tight press fit, the clearance is significantly reduced due to the ring expanding. The C3 design counteracts stress in the rolling elements and ensures smooth running in accordance with standard tolerance P0.