Which carries lubricant from a lubricator to the point of use in a pneumatic system?

Which carries lubricant from a lubricator to the point of use in a pneumatic system?

• A. Lubricant line
• B. Return line
• C. Electrical conduit
• D. Air flow

Answer: (D)

Lubrication in a pneumatic system is delivered by injecting oil into the compressed air so it is carried downstream by the air flow. The lubricator meters a small amount of oil into the airstream, and as the air moves toward valves, cylinders, and tools, the oil droplets mix with the air and lubricate moving parts. The lubricant travels with the air to the point of use, rather than through a separate lubricant line or a return line, and electrical conduit is not involved in delivering lubrication.

Lubrication in a pneumatic system is delivered by injecting oil into the compressed air so it is carried downstream by the air flow. The lubricator meters a small amount of oil into the airstream, and as the air moves toward valves, cylinders, and tools, the oil droplets mix with the air and lubricate moving parts. The lubricant travels with the air to the point of use, rather than through a separate lubricant line or a return line, and electrical conduit is not involved in delivering lubrication.