Since 1950, SDP/SI has been transforming ideas into motion with expert engineering and advanced manufacturing. From weapons systems to surgical robotics and even components for the Mars Rover, we partner with the most recognized names in the industry and deliver precisions solutions where they matters most.
From standard parts to fully custom components, SDP/SI delivers flexible, precision-engineered solutions tailored to your project. Our team offers expert design consultation, prototyping, and advanced manufacturing to streamline development, boost performance, and reduce costs.
SDP/SI is proudly certified in the latest industry accreditations, ensuring our processes, products, and quality systems meet the highest standards for precision, safety, and performance.
Our advanced machining capabilities support a wide range of precision and commercial-grade components: gears, timing belts and pulleys, bearings, shafting, couplings, gearheads, speed reducers, and motion control solutions—available in various sizes, materials, finishes and configurations—delivering finished components ready integration into your application.
Our state-of-the-art facility features CNC machining, milling, and turning centers—delivering consistent precision and fast turnaround times. Whether you need low-volume prototypes or full-scale production, we have the expertise and infrastructure to meet the toughest industry demands.
Choose from over 100,000 standard components used across a wide range of applications. Access detailed product specs, free CAD models, and engineering drawings anytime through our e-store - designed with your convenience in mind.
At SDP/SI, we help manufacturers boost productivity and reduce downtime by delivering fully finished components—no in-house modifications or secondary operations needed—we do it all!
From machining to finishing to ready-to-install delivery, we handle the details so you can focus on what matters. Share your project needs, and our engineers will help you select the ideal components for performance and fit.
Our integrated facility unites engineering, manufacturing, quality assurance, and shipping—streamlining operations, improving process control, and boosting capacity. The result: faster turnaround and the consistent quality our customers rely on.
Watch our facility tour video to see our team and technology in action.
Need help with product selection or custom solutions? Our engineering team is here to support your project—Whether you're scaling production, developing a one-of-a-kind prototype, or need technical assistance with a component, we’re ready to support you.
Upload your drawings or 3D CAD files via our quote form, call (516) 328-3300, or email sdp-sisupport@sdp-si.com. We're ready to help.
