SDP/SI SHOP ONLINE (800) 819-8900
celebrating 70 years of excellence

Stock Drive Products / Sterling Instrument Logo  
Setting Ideas Into Motion
providing small mechanical components, engineering and manufacturing services for industrial and commercial applications.

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.

Our Products:

 Gears, Differentials, Ratchets and Pawls
Timing Belts and Pulleys, Chains and Sprockets
  Belt & Chain Drive Components
Motors, Gearheads, and Motion Control
  Motors, Gearheads, and Motion Control
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
  Speed Reducers & Right Angle Drives
Clutches and Brakes
  Clutches and Brakes
Shafts and Shaft Accessories
  Shafts and Shaft Accessories

Featured organizations and people
  Featured: Organizations
Take a tour of our facilitys
  Tour our Facility
Read our Blog
  Blog: Ideas in Motion

Custom Solutions

Precision Gears
Mechanical Components
Custom Gears Design | Built to Print | Prototype to Production


Medical Technology


Navy Fighter Jets


Medicine packaging

Professional Development
& Technical Resources

Thomas Supplier

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