Precision Gears and Gear Assemblies Made to Order

Service Detail from Stock Drive Products & Sterling Instrument - SDP/SI

SDP/SI boasts an extensive precision gear and gear rack cutting facility that allows them to provide the perfect standard or custom gear or gear assembly for your application every time. ISO 9001 + AS9100 certified, SDP/SI is committed to the high standards you expect, ensuring that your parts are manufactured to the highest quality.

Established in 1950, our highly experienced engineers will work with you one on one not only to help you select the right standard gear for your application, but also to help you synthesize a custom design with all of the proper specifications. Your options for gear specs are many; stainless steel, titanium, alloy steel, aluminum, brass, plastics and other materials are available, with zinc, chrome and nickel plating, anodizing and black oxide finishes, and passivation. Our expertly trained machining staff will cut your gears to whatever quality your application demands, up to AGMA Q14, using the latest in gear-cutting technology. Available gear and gear rack pitches from 16 DP to 200 DP.

SDP/SI works to fit your schedule, shipping prototypes, large quantities, and everything in between with quick turnaround. Special labeling and packaging are also available to ensure that your exact order arrives as swiftly and safely as possible.

Stock Drive Products/Sterling Instrument (SDP/SI) offers a wide variety of inch and metric small mechanical components for the design engineer and OEM. Standard components can easily be located and purchased in one convenient place, shop online 24/7. The engineer not only meets all his component requirements, but saves valuable time by not having to search other sources. For custom design and manufacturing, speak to our engineers at (516) 328-3300. ISO 9001 + AS9100 certified.
Quotes, online orders, and 3D CAD models are available at our estore at

SDP/SI - Stock Drive Products/Sterling Instrument, a Designatronics company
250 Duffy Avenue, Hicksville, NY 11801
Phone: (516) 328-3300; (800) 819-8900