Precision Mechanical Components, Gears, and Assemblies – Over 100,000 In-Stock Parts | SDP/SI
SDP/SI is your trusted source for high-quality standard mechanical components, including precision gears, gear assemblies, couplings, shafting, bearings, and more - engineered to meet the demands of industrial and OEM applications. With over 100,000 in-stock components, we offer fast access to the mechanical parts you need, backed by decades of expertise since 1950.
For engineers and designers, we make integration seamless with free, downloadable 3D CAD models available on every product page in our E-Store. Simply select your part and click the Download CAD button to streamline your design and development process.
