Cylindrical Roller Bearings SKF N310 ECP/C3

The SKF N310 ECP/C3 cylindrical roller bearing, with a 50 mm bore and increased C3 clearance, is designed as a separable support bearing for high radial loads.

The N310 ECP/C3 cylindrical roller bearing is a single-row rolling bearing designed to accommodate high radial forces. In the N design, the inner ring guides the cylindrical rollers between two fixed flanges, whilst the flangeless outer ring is designed to be removable from both sides. SKF manufactures this design with an optimised internal structure and a polyamide cage. The open bearing, which has no integrated seal, is designed for an operating temperature range of –30 to +120 degrees Celsius.

Why is the N310 ECP/C3 cylindrical roller bearing used as a non-locating bearing?

In mechanical drives, this single-row cylindrical roller bearing functions purely as a non-locating bearing on the rotating shaft. Thanks to the outer ring, which can be removed from both ends, the bearing unit compensates for operational length changes in the shaft axially in both directions without constraint within the housing. This design is suitable for bearing arrangements in which only high radial loads are present and no axial guidance is required. To provide complete shaft support, it is therefore always intended to be combined with a separate fixed bearing.

What is the function of the increased bearing clearance C3 in design N?

The version with bearing clearance class C3 has a greater radial bearing clearance than the standard tolerance when new. This increased operating clearance counteracts stress on the rolling elements when tight fits on the shaft and housing cause the bearing ring to expand, or when temperature differences occur during operation. The dimensional tolerances according to P0/PN or ABEC 1 apply to installation. The running accuracy complies with the specifications according to P6 or ABEC 3 and ensures smooth rolling of the rolling elements.