Cylindrical Roller Bearings FAG NJ412 -M1A-C3

The FAG NJ412 -M1A-C3 cylindrical roller bearing, with a 60 mm bore, offers high radial load-carrying capacity and axial guidance in one direction.

The NJ412 -M1A-C3 cylindrical roller bearing is a single-row radial roller bearing designed for demanding industrial applications. With main dimensions of 60x150x35 mm, this open bearing can accommodate high radial loads. Thanks to the NJ design, the outer ring has two solid flanges, whilst the inner ring has one solid flange. As a result, this design functions as a support bearing that axially fixes shafts on one side whilst allowing for axial movement in the opposite direction. The inner ring can be axially withdrawn for installation.

What is the NJ412 -M1A-C3 cylindrical roller bearing suitable for in practice?

This design is particularly suitable for bearing arrangements subject to high radial loads and one-way axial force. Typical applications include heavy-duty industrial shaft bearings subject to thermal stress. As the inner ring can be removed from one side, the inner and outer rings can be fitted separately and reliably, even on shaft ends that are difficult to access. In combination with a suitable non-locating bearing, the design compensates for thermal linear expansion of the shaft during operation.

What are the advantages of the M1A brass cage and the C3 clearance?

The designation M1A refers to a solid, externally guided brass cage. This guidance on the outer ring ensures stable roller guidance at high speeds and during rapid acceleration. The slightly increased radial clearance (C3) counteracts stress build-up should operational heating or tight fits reduce the operating clearance. With a permissible temperature range of –30 to +150 degrees, the bearing is suitable for thermally demanding industrial environments without a groove or lubrication bore in the outer ring.