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The BRIDGEPORT 11180855 is a retaining ring designed as a replacement hardware component for milling machine assemblies. Also referenced as SNAP RING 5102-156 in Bridgeport parts documentation, this retaining ring secures internal components within the 2J-Head Top Housing, maintaining precise positioning under rotational load. Retaining rings of this type are critical to spindle and drive-train integrity in vertical milling machines. Installation is typically performed by a qualified machine tool technician or millwright during scheduled maintenance or component replacement service.
This retaining ring is used specifically in the 2J-Head Top Housing on Bridgeport I Series Milling Machines. It is a direct OEM-style replacement part suited for machine shops, toolrooms, and industrial maintenance environments where Bridgeport milling equipment is in service. The part ships individually with a minimum order quantity of one unit.
Compatible with the 2J-Head Top Housing on Bridgeport I Series Milling Machines, as specified by the manufacturer.
Installation and removal of retaining rings on precision machine tool assemblies should be performed by a qualified millwright or machine tool technician. Power down and lockout/tagout the machine in accordance with OSHA lockout/tagout procedures before beginning any disassembly. Use proper snap ring pliers sized for the ring to avoid deforming the ring or damaging the housing groove. Inspect the groove for wear or burrs before installing the replacement ring.
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