The DDRB-N (formerly ZB) type multi-point lubrication pump is designed for centralized lubrication systems in medium and small-sized machinery and equipment with low lubrication frequency, less than 50 lubrication points, and nominal pressure of 31.5MPa. It supplies lubricating grease directly or through a single-line distributor to each lubrication point. Particularly suitable for single-machine equipment in metallurgy, mining, heavy machinery, port transportation, and construction.