Grease port straight

Direct linear lubrication fitting designed to inject maintenance grease directly into bearings, bushings, and rotating mechanical assemblies. It operates by attaching to a grease gun coupler, allowing pressurized lubricant to push through an internal spring-loaded steel ball check valve that opens during injection and seals immediately upon release. This straight-line orientation enables clean, direct-access lubrication while preventing dirt, contaminants, and moisture from entering internal bearing tracks during routine maintenance.