🔍 Key Concepts

• Lubrication methods commonly used on small, slow-speed or low-pressure reciprocating compressors • Difference between splash lubrication and force-feed (mechanical) lubrication • How lubrication systems relate to compressor size, pressure, and complexity

💭 Think About

• Which lubrication method is simple, low-cost, and works well at low speeds and pressures? • Which options describe systems more typical of larger, high-speed, or high-pressure machinery rather than small air compressors? • Think about how oil actually gets from the crankcase to the cylinder walls in a very simple machine with few parts.

✅ Before You Answer

• Eliminate any choice that would require complex pumps, lines, or moving parts just to get oil to the cylinders on a very small unit. • Ask: does this method sound like it needs dedicated oil passages and careful design (more common on large diesel engines) or is it something a small shop compressor could use? • Focus on the choice that best matches a simple crankcase with oil in the bottom, where moving parts themselves help distribute the oil.