Final answer:
The mineral product series commonly used for worm gears are molybdenum disulfide (MoS2), graphite, and polytetrafluoroethylene (PTFE).
Step-by-step explanation:
The mineral product series commonly used for worm gears is molybdenum disulfide (MoS2). This mineral product acts as a lubricant, reducing friction and wear between the worm and the wheel in worm gear systems. It is often used in combination with a base oil or grease to provide better lubrication.
Another mineral product series that can be used for worm gears is graphite. Graphite has excellent self-lubricating properties and can withstand high loads, making it suitable for worm gear applications.
Lastly, polytetrafluoroethylene (PTFE) is a synthetic mineral product commonly used as a solid lubricant in worm gears. PTFE offers low friction and good temperature resistance, making it an ideal choice for high-performance worm gear systems.