Yanmar is a Japanese engine manufacturer whose industrial diesel engines are installed in a large proportion of mini excavators, compact loaders, and small equipment sold worldwide — including machines from other manufacturers. Takeuchi, Wacker Neuson, Schaeff, Bobcat, and many others use Yanmar engines as OEM drives.
The engine range extends from 5 kW (mini excavators 0.8 t) to 155 kW (medium excavators 25 t). Yanmar diesel engines are characterized by compact design, low fuel consumption, and high reliability. The TNV/TNM series meet EU emission stage V without diesel particulate filters in small power classes (< 19 kW) — a cost advantage for machine manufacturers.
Yanmar also manufactures its own mini excavators (ViO series, SV series) and wheel loaders (V series), making it both a manufacturer and engine supplier. The ViO series with its patented offset boom is particularly successful in the Japanese and European markets. Yanmar engines are considered "workhorses" in the industry with service hours of 10,000+ without major overhaul.