Deep Groove Ball Bearings FAG 6217 -C3

The FAG 6217-C3 single-row deep-groove ball bearing, measuring 85 × 150 × 28 mm, offers increased bearing clearance for industrial applications subject to thermal stress.

The FAG 6217-C3 deep-groove ball bearing accommodates radial loads as well as axial guidance forces in both directions. In this open rolling bearing, the rolling elements run in deep raceways made of standard bearing steel (100Cr6) without cover plates. A sheet steel cage guides the balls evenly during operation. Thanks to its open design, the bearing is suitable for applications with external sealing and central lubrication.

In which applications does the 6217-C3 deep-groove ball bearing prove its worth?

Designs featuring an 85 mm shaft primarily utilise this bearing arrangement for combined loads and higher speeds. As the component has an open design, lubricant reaches the raceways unhindered, which aids heat dissipation during operation. The permissible temperature range is between –20 and +150 degrees. A prerequisite for its use is a housing that protects the bearing location from contamination and lubricant loss.

When is the increased clearance C3 required?

Bearing clearance C3 exceeds the standard range and specifically compensates for thermal expansion during operation. When temperature differences occur between the shaft and the housing, the inner ring expands more than the outer ring. The increased radial bearing clearance helps to prevent stress in the rolling elements. Furthermore, the C3 variant is recommended where tight press fits reduce the operating clearance after press-fitting.