Fafnir RCJ3-4G1012KRRB Flange Mount Bearing Unit

The Fafnir RCJ3-4G1012KRRB Flange Mount Bearing Unit with collar is a flange-mounted bearing housing from FAFNIR designed to support a rotating shaft in machinery. Its collar provides secure axial retention of the shaft, helping maintain proper clearance and alignment during operation. Mounted to a machine frame with bolts through the flange, it offers a stable, serviceable housing that protects the bearing assembly. The RCJ3-4G1012KRRB designation identifies the specific variant within FAFNIR's RCJ3 line, allowing installers to match established mounting patterns and catalog references. Flange-mount bearing units like this are commonly used in light to medium load applications where shafts require stable radial support and straightforward replacement. Because it integrates the bearing inside a robust housing, it simplifies maintenance access and reduces misalignment risks during assembly. Choosing this model ensures compatibility with standard flange mounting patterns and serves as a drop-in option for installations that already use FAFNIR RCJ3 components.