The YMAS is the workhorse of the automatic cyclic pumps. Its Heavy-Duty pump, 10 Watt Motor and aluminum reservoir (2.0 Lliters) makes it especially usable in tough production environments. Features include a wide opening for easy filling, sight gauge for level indication, a drop in filter for easy maintenance, and a drain plug to facilitate cleaning or changing lubricates. A float switch and larger reservoirs are optional.
If you are looking for a pump with a smaller reservoir, try the Showa SSMA. The Showa YMB, Showa SMD and Showa SMA are other alternatives.