Cylindrical Roller Bearings FAG NJ209 -E-XL-M1-C3

The FAG NJ209 -E-XL-M1-C3 cylindrical roller bearing, with dimensions of 45x85x19 mm, accommodates high radial loads as well as unilateral axial loads.

The single-row cylindrical roller bearing NJ209 -E-XL-M1-C3 from FAG is designed as a support bearing for radial loads. Due to the NJ design, the outer ring has two fixed flanges, whilst the inner ring has one fixed flange and is removable on one side. This design guides the shaft axially in one direction and allows for axial displacement in the opposite direction. With key dimensions of a 45 mm bore, 85 mm outer diameter and 19 mm width, this version complies with tolerance class P0/PN or ABEC 1.

In which applications is the NJ209 -E-XL-M1-C3 cylindrical roller bearing used?

This design is used where bearing arrangements are subjected to high radial forces whilst simultaneously requiring axial guidance in one direction. Typical applications include shaft mountings with single-sided guidance. As the outer ring is designed without a lubrication groove or bore, the lubricant is supplied via the housing design. The roller geometry is designed for dynamic loads, such as those encountered in continuous operation in mechanical engineering.

What is the function of the brass cage and the increased bearing clearance C3?

The designation M1 stands for a brass cage that guides the cylindrical rolling elements and is designed for demanding thermal and dynamic operating conditions. The increased radial clearance C3 compensates for operational thermal expansion of the shaft and housing, ensuring that the rollers run freely even in the event of temperature differences. At operating temperatures between –30 and +150 degrees, the open roller bearing retains its dimensional stability.