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A grease fitting, grease nipple, Zerk fitting, grease zerk, or Alemite fitting is a metal fitting used in mechanical systems to feed lubricants, usually lubricating grease, into a bearing under moderate to high pressure using a grease gun.
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Grease fittings (also known as Zerk fittings or grease nipples) are permanently installed on mechanical systems and bearings to provide lubrication points for feeding lubricants to the systems or bearings without overflow or leaks.
Feb 28, 2024 · Grease gun fittings, or grease gun couplers as they are also called, are specially designed connectors that attach the end of the grease gun hose or extension to the fittings on machines or equipment that require lubrication.
Grease fittings are used to lubricate parts and assemblies. By applying pressure to a ball valve in the fitting, grease flows into the lubricating chamber but cannot flow out. A ball check in the fitting’s head prevents the ingress of dirt, dust, and other contaminants.
Mar 13, 2024 · A grease fitting, sometimes called a Zerk fitting, grease nipple, or Alemite fitting is a small metal fixture used on mechanical assemblies. It provides lubrication to internal parts without leaks or overspill. Adding lubricants to mechanical systems helps improve their efficiency.
Aug 3, 2020 · Grease fittings, sometimes called grease nipples or Zerks, are small hydraulic check valves used on bearings and similar mechanical assemblies to supply lubricant to internal parts. They are standardized in the US under SAE J-534 for automobiles and under SAE 35411 for aerospace applications.
