Designatronics Inc., Engineered Solutions for a World in Motion (800) 819-8900
SDP/SI your go-to source for Robotics SDP/SI 10% OFF Belt Promotion Quality you can see. Precision Bevel Gears Always a friendly voice on the other end of the phone. Qualiy products made in america ISO Class 7 clean room. We employ the latest in technology.

Our Brands

Stock Drive Products

Stock Drive Products/Sterling Instrument

Setting Ideas Into Motion

(SDP/SI) - For over 50 years, SDP/SI has been “the source” for comprehensive mechanical solutions for critical motion control applications. Thousands of standard catalog items are available, offering inch and metric dimensioned, precision and commercial grade components to fit a broad range of requirements. High-quality machined parts, molded components and custom gearing and gear assemblies are built for a wide spectrum of applications, including commercial, industrial, medical, aerospace and defense.

Run by engineers for engineers, you can rely on SDP/SI for high-quality standard components, customized design and full engineering and technical support.

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Quality Transmission Components


Supplying North America with Metric Gears

(QTC) - QTC METRIC GEARS is your complete source for metric gears and gear products, in North America. With 20,000 configurations of standard items we are able to meet the ever increasing demand for metric gears for both replacement and OEM production quantities in industrial applications.

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Quality Transmission Components

Quality Bearings & Components

The Bearing Marketplace

(QBC) - Quality Bearings & Components offers a large inventory of high quality small inch and metric bearings from major manufacturers. Our services include bearing lubrication and maintenance capabilities. We provide the best selection of components and bearing maintenance equipment available today.

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Engineered Solutions
For A World In Motion

Designatronics is dedicated to developing, manufacturing and distributing the highest quality mechatronic components, engineered solutions and services on time to the customer's request.

The combination of our brands, manufacturing expertise and mechatronics acumen makes us uniquely qualified to provide complete engineered solutions to all of our customer's automation, motion control and vibration challenges across a wide spectrum of industries.

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