[iheartmemcache]

Basically anything that's used in industry has a maintenance schedule. Here[1] is what Ingersoll Rand (basically the "go to" in pneumatics re: heavy industry) provides even with their $250 impact wrenches. Simple oiling, greasing via zerk fittings and air filter swap time-tables, but indicative of their corporate culture. Whether it's an entry-level air gun or a $150k two-stage compressor you're provisioning, that culture of meticulous documentation and proper servicing is just a part of their (and most maritime, mining, heavy industry, etc) culture. "Modern Diesel Technology: Preventive Maintenance and Inspection" is a pretty interesting read, if, uh, you're into that stuff haha.

[1] https://i.imgur.com/XTd3wx7.png