Bearing housing FRM90/4 is a stabilisation ring for fix bearing arrangements, holding the bearing set stable within its seating during operation. The outside diameter is 90.0 mm and the net mass is 18.94 g, which keeps the added weight and radial space requirement to a minimum when fitted alongside the main bearing. This ring supports the fixed side of a bearing arrangement by preventing axial displacement, keeping the assembly correctly positioned under load. As it functions purely as a stabilisation element rather than a rolling component, it must be paired with a matching bearing and shaft assembly, contributing to a secure fit without affecting the running clearance or lubrication of the bearing itself.