Which term describes a mounted bearing housing?

• A. Lubrication
• B. Hydraulics
• C. Alignment
• D. Pillow Block Bearing

Answer: (D)

In machinery, a mounted bearing housing refers to a bearing that is enclosed in a housing and bolted to a frame, providing rigid support for a rotating shaft. A pillow block bearing is a common type of this mounted unit: it consists of a housing (the pillow block) that sits under or beside the shaft, with mounting holes on the base to secure it to the machine frame and the bearing inside ready to carry the shaft. This setup makes installation and shaft alignment straightforward and keeps the bearing protected by seals or shields, often with a lubrication path or fitting accessible from the outside. The other terms relate to different aspects of bearing systems—lubrication is how you supply grease or oil, hydraulics refers to fluid power systems, and alignment is the process of aligning shafts after installation.