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Stock Drive Products/Sterling Instrument a Designatronics company
Established in 1950, Stock Drive Products/Sterling Instrument (SDP/SI) is the company engineers and OEMs depend on for high-quality components, subassemblies, and engineering expertise. As a company founded and managed by engineers we understand and respond to the developing needs of our customers better than anyone. Over 100,000 components are available off-the-shelf for fast turnaround. When a standard part won’t meet your requirements we can provide alternative solutions through custom design and manufacturing. Our engineering and manufacturing teams will partner with you throughout the entire process. Located in New York, SDP/SI is remaining on Long Island, moving to a brand new state-of-the-art production and manufacturing facility in early 2017. By providing design, development, manufacturing, assembly, and testing in one location we can ensure the end product will meet your expectations. For prototype and small to large production runs you can rely on SDP/SI.
High Volume Precision Gear Production We manufacture precision gears, custom gearboxes, differentials, and planetary gearheads.
State-of-the-art gear production facility has increased capacity and offers new capabilities.
High-precision gear production 24/7
Faster turnaround – including gear cutting on CNC lathes for one piece flow (depending on quality (UP TO AGMA 11) and process requirements).
Stock Drive Products/Sterling Instrument, ISO 9001 + AS9100 Certified SDP/SI designs, manufactures and produces custom and standard gears and other power transmission components. Our precision gears, gear assemblies, high-quality machined parts and molded components are used in a wide variety of product applications worldwide including aerospace, defense, military and commercial aircraft, robotics, and medical.
Timing Belts and Pulleys
Precision Gears
Precision Gearboxes
Precision Machined Components
Molded Components
Mechanical Assemblies
Customized Components and Assemblies
Contract Manufacturing
For a design consultation or technical assistance call our engineering department: (516) 328-3300.
Request a Free Inch and Metric Catalog Set, more than 2,784 pages of parts, specifications and technical information.
You’ve been tasked with designing a gear train for a new product. After spending countless hours creating your design and working with a manufacturer to produce a prototype you discover the gears don’t mesh as calculated. What went wrong? Discover the design step you may have overlooked.
SDP/SI is a total solutions provider able to take your project from concept to completion. Offering a wide range of standard components, custom solutions, manufacturing, engineering, assembly, and world-class quality, we partner with our customers ensuring their success. Explore the many ways we can help.
Consisting of a rotor and stator, the Frameless motors are delivered without bearings and motor shaft and are connected during assembly. The compact size, high torques, and large space for cable routing allow for integration into a wide range of applications. Discover the possibilities.
Choosing the right motors, controllers, and drives can sometimes be challenging due to the many variables and options. Frameless BLDC motors fit easily into small compact machines that require high precision, high torque, and high efficiency, such as robotic applications where low weight and inertia is critical. Learn more.
When faced with a design challenge engineers reach out to SDP/SI for their expertise in small power transmission solutions and its engineer-to-engineer support. A frequently asked question is which is better, a timing belt and pulley drive system or a gear drive? Discover the advantages and disadvantages of both.
When designing a drive system for a power transmission application, a timing belt and pulley drive system is one of the most common, but is it the best solution for you? To determine the best system for your application needs, explore your options.