SDP/SI (800) 819-8900
Designatronics Celebrates 70 years

SDP/SI - Stock Drive Products / Sterling Instrument
provides small mechanical components, engineering and manufacturing
services for industrial and commercial applications.

Setting Ideas Into Motion

Since 1950, design engineers have depended on SDP/SI 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.

When a standard product 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. By providing design, development, manufacturing, assembly, and testing in one location we can ensure the end product will meet your expectations.

Gear Technology January / February 2020 • "Bevel Gear Generators Get Better WIth Age"

An economical modernization program gives Designatronics’ tried-and-true Gleason No. 102 Coniflex generators a new lease on life for fast, reliable production of smaller precision straight bevel gears... Continue Reading


Our Products:

Gears
 Gears, Differentials, Ratchets and Pawls
Timing Belts and Pulleys, Chains and Sprockets
  Belt & Chain Drive Components
Shafts and Shaft Accessories
  Shafts and Shaft Accessories
Bearings and Bearing Blocks
  Bearings and Bearing Blocks
Couplings and Flexible Shafts
  Couplings & Universal Joints
Vibration and Shock Mounts
  Vibration and Shock Mounts
Linear Motion Products
  Linear Motion Products
Hardware and Misc. Components
  Hardware and Misc. Components
Gearheads and Speed Reducers
  Gearheads and Speed Reducers
Right Angle Gear Drives
  Right Angle Gear Drives
Clutches and Brakes
  Clutches and Brakes
New Metric Catalog; available 2/2020; Request your free copy.

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• Take a Tour

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• Blog

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• Design Tools

Center Distance Designer
Find the correct center distance for your belt and pulley application
Coupling Selector
Find the perfect coupling easily

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