Product Announcements:
Power Transmission

SDP/SI offers a wide range of stock mechanical components online, including precision machined and molded gears, timing pulleys, timing belts, bearings, couplings, shafting, and gearboxes. Standard inch and metric products ship quickly, supported by engineering expertise, CAD models, and selector tools. Read more...

SDP/SI offers precision synchronous timing belts and drive components online, featuring extensive inventory, fast shipping, engineering support, CAD resources, and custom solutions for automation, robotics, aerospace, medical, and industrial applications. Read more...

SDP/SI manufactures precision molded universal joints engineered for reliable motion control. Lightweight, durable, and corrosion resistant, these cost-effective joints provide vibration dampening, electrical insulation, and customizable configurations for medical, automation, aerospace, and industrial applications. Read more...

SDP/SI, a U.S. manufacturer since 1950, provides precision mechanical solutions for motion control applications. Its miniature Fairloc® bellows couplings deliver zero backlash, vibration damping, and reliable torque transmission, supported by engineering expertise, online design resources, and custom manufacturing capabilities. Read more...

SDP/SI manufactures precision bevel gears featuring the proprietary Fairloc® Hub design, delivering accurate, repeatable torque transmission with easier assembly and improved reliability. Available in multiple pitches, modules, and materials, these gears support demanding medical, aerospace, defense, and automation applications. Read more...

Chronic assembly problems vanished when a medical device OEM upgraded to SDP/SI’s Fairloc® hub gears, delivering exact alignment, consistent performance, and reliability. Learn more. Read more...

SDP/SI engineers and manufactures precision gears, gearboxes, and motion control components in the USA, delivering custom mechanical solutions for demanding aerospace, defense, medical, and automation applications. Read more...

Explore SDP/SI’s precision-engineered standard universal joints designed for demanding motion control applications. Access CAD models, specifications, and online ordering with expert engineering support. Partner with SDP/SI to accelerate development, improve performance, and scale production with confidence today. Read more...

Explore SDP/SI’s precision-engineered standard shaft couplings designed for demanding motion control applications. Access CAD models, specifications, and online ordering with expert engineering support. Partner with SDP/SI to accelerate development, improve performance, and scale production with confidence today. Read more...

Sesame PGW inline planetary gear heads are designed to bolt-on directly to linear actuator belt drive systems. High quality gears and components are utilized to create compact and rigid units with low backlash and maintenance-free operation. Read more...