Cylindrical Roller Bearings FAG NU316 -E-XL-M1-C3

The FAG NU316 -E-XL-M1-C3 cylindrical roller bearing, measuring 80 × 170 × 39 mm, is designed as a support bearing to accommodate high radial loads.

This single-row cylindrical roller bearing, type NU316 -E-XL-M1-C3, is designed to accommodate high radial loads in mechanical and plant engineering. As an open rolling bearing without an integrated seal, it is designed for use with external lubrication systems. The NU design is characterised by two fixed flanges on the outer ring, whilst the inner ring is manufactured without a flange. This allows the inner ring to be removed from both sides, which facilitates the separate assembly of both bearing rings.

What is the NU316 -E-XL-M1-C3 cylindrical roller bearing suitable for as a non-locating bearing?

The NU design functions purely as a non-locating bearing. As the inner ring has no flanges, the design allows axial length changes in the shaft to be compensated for directly within the bearing without any constraint. This counteracts axial stresses caused by thermal expansion during operation. The brass cage keeps the rolling elements spaced apart and is designed to withstand mechanical and thermal stresses within a temperature range of –30 to +150 degrees Celsius.

What does the increased C3 bearing clearance mean for this bearing?

The suffix C3 indicates a slightly increased radial clearance compared with the standard clearance group CN. This increased clearance between the rollers and the raceway is necessary when tight fits on the shaft or housing cause the inner ring to expand or the outer ring to contract. Similarly, the C3 bearing clearance compensates for operational temperature differences between the rotating shaft and the housing, without the bearing being subjected to impermissible preload during operation.