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SDP/SI designs, engineers & manufactures small mechanical components.
Integrated Design, Engineering and Manufacturing Under One Roof

At SDP/SI, 50 years of design and manufacturing experience, coupled with the very latest technology, go into every component produced. Whether it's developing a complete design or choosing the right standard or custom part for the job, our engineers will help you meet your goal. Out on the shop floor, our skilled manufacturing team utilizes state-of-the-art CNC machinery paired with precise testing and inspection methods to ensure that the gear, pulley or custom component you receive meets all your requirements. Expert handling, packaging and shipping methods guarantee your components arrive as expected. >> Download our machinery list machinery list PDF

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SDP - Stock Drive Products AS9100 registered
Known as the go-to source for synchronous drive components, Stock Drive Products has built a reputation among designers of small mechanisms and drives for having all the finest quality products on hand. >> Learn More...
Stock Drive Products Timing Belts and Timing Belt Pulleys
SI - Sterling Instrument
AS9100 registered

Sterling Instrument is unsurpassed as a custom and standard gear manufacturer. >> Learn More... Sterling Instrument Gears and Gear Assemblies
A Superior Way to Fasten Rotating Parts
Nonmarring to the shaft, installs with standard tools and is reusable. >> Learn More... Shaftloc Fasteners
SDP/SI - Stock Drive Products / Sterling Instrument
2101 Jericho Turnpike, New Hyde Park NY 11040
P: 1.516.328.3300 • 1.800.819.8900 - F: 1.516.326.8827 - E: support:

We reserve the right to make changes and corrections without notice. Every effort has been made to provide accurate technical and product information. The company disclaims responsibility for any error or omission regarding technical & product information.
New Coupling Selector Tool Miniature Gear Train White Paper Download