About Us

Premium SMSR Gearboxes – Precision Engineering for Reliable Performance
At Bigrun Gear Box, we take pride in offering top-tier engineering solutions with our Shaft Mounted Speed Reducer (SMSR) Gearboxes. Available in six distinct sizes (C, D, E, F, G, & H) and three precision ratios (5:1, 13:1, & 20:1), our gearboxes are designed to cater to a wide range of industrial applications.

Premium SMSR Gearboxes

Why Bigrun Gearbox

We're on a mission to change the way the housing market works. Rather than offering one service or another, we want to combine as many and make our clients' lives easy and carefree. Our goal is to match our clients with the perfect properties that fit their tastes, needs, and budgets.