The round oil cup is specially designed for the lubrication and maintenance of elevators. It has a round appearance. The round oil cup is mostly made of corrosion-resistant and easy-to-clean materials to ensure its long-term performance in the elevator environment. The oil nozzle usually has an anti-drip function. Effectively preventing the waste of lubricating oil and contaminating the elevator; the design of the round oil cup helps distribute the lubrication points evenly, improves the lubrication effect of the elevator, and reduces friction and wear during operation.