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Our Inch and Metric Catalogs are used Worldwide

– Get your FREE copy of the D820 (Inch) or D815 (Metric) catalogs, Today!


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D820 Master Catalog of Inch Automation & Drive Components


D815 Master Catalog of Metric Automation & Drive Components

Master Catalog of Inch
Automation & Drive Components

1,520-pages Master Inch size component catalog. Includes over 87,000 off-the-shelf commercial and precision Inch size drive components such as: gears, timing belts, timing belt pulleys, bearings, couplings, gearheads and speed reducers, right angle drives and linear motion systems.

Master Catalog of Metric
Automation & Drive Components

Stock Drive Products / Sterling Instrument Metric Components Catalog D815 contains product specs for over 14 sections of items such as: gears, timing belts, timing belt pulleys, bearings, couplings, and much more. Also, included is an extensive technical section, Elements of Metric Gear Technology.

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eCatalog E162 Shaftloc® Components Catalog

E162 Shaftloc®
Components eCatalog

A superior way to fasten rotating parts! Non marring to the shaft. Installs with standard tools and is reusable. Excelling because of its simplicity, it contains all structural features in only two parts.

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Fairloc White Paper

Fairloc® Hubs:
Selecting the Best Hub Fastener for a Power Transmission Application

Fairloc® is completely self-contained and the unique design allows the hub to fully and accurately support the component on the shaft reducing any motion and misalignment after clamping the hub.

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Gears vs. Belt Drive System Paper

Gears vs. Belt Drive System

A common question that arises when designing an application involving power transmission is, "how will this system transfer motion?"

Two of the most popular answers to this question are: a gear drive system or a belt drive system.

Here at SDP/SI our application engineers are asked “which is better?” And just as with everything else in engineering, it depends.

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Aerospace and Defense Brochure

Aviation, Defense, & Space Industries

For more than 70 years, we’ve provided engineering development, key mechanical components and customized subassemblies to the aerospace, medical, defense, and robotics industries worldwide. Comprehensive engineering experience enables us to offer additional services such as design review and value engineering toward the goal of manufacturing efficiencies and optimal design.

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Medical Brochure

Medical Brochure

We provide small mechanical components and customized assemblies to the medical device and healthcare industries worldwide.

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More: e-books and white papers
250 Duffy Avenue, Hicksville, NY 11801 OEM Design Engineers, Machinists, Students, Hobbyists and others rely on SDP/SI for all their small mechanical components and precision gear requirements. Over 87,000 high-quality machined components, molded parts and precision gears are featured in our catalogs.

SDP/SI Catalogs are found on desks around the world because they not only provide detailed product information, but prove to be a handy reference tool when designing. Each catalog features a technical section to assist in designing a Synchronous Drive System - Timing Belts, Pulleys, Chains and Sprockets (Inch Catalog) and a gear drive, Elements of Gear Technology (Metric Catalog). Also included are conversion tables, formulas of energy, inertia, torque, power and work, and various standards and dimensions for inch and metric fasteners, timing belts, pulleys, and much more.

Request your copy today and get product specifications plus technical data for inch and metric precision gears, plastic gears, timing belts, pulleys, sprockets, roller & ladder chains, couplings, bearings, clutches, brakes, speed reducers, gear assemblies, planetary gearheads, and more.

You can download or request our print catalogs by following the links below.