Lubrication fittings

Lubrication fittings, also known as grease fittings or Zerk fittings, are small mechanical devices installed on machinery components like sliders and carriages. They provide a sealed connection point for lubricant injection systems, allowing controlled delivery of grease or oil to bearing surfaces, slides, and other moving interfaces. These fittings maintain lubrication integrity by preventing contamination and ensuring consistent lubricant flow to reduce friction, heat generation, and component degradation in industrial applications.

Lubrication fittings operate on a pressure-based principle. When a grease gun or automated lubrication system applies pressure, it forces lubricant through the fitting's internal check valve into the component's lubrication channel. The check valve prevents backflow and contamination, maintaining a sealed system. In sliders/carriages, this ensures lubricant reaches critical contact surfaces between moving parts, forming a protective film that minimizes direct metal-to-metal contact.