SDP/SI Producers Of Off-The-Shelf: Bearings, Gears, Timing Belts, Timing Pulleys, Couplings, Shafts

Stock Drive Products, ISO 9001:2000 Registered and Sterling Instrument, ISO 9001:2000+AS9100B Registered are major operating divisions of Designatronics, Inc. SDP/SI's experienced work force designs, manufactures and distributes a diverse line of inch and metric standard and custom commercial and precision-grade components, as well as electromechanical devices and assemblies. Over 100,000 components are available such as: Gears, Timing Belts, Timing Belt Pulleys, Fairloc® Products, Couplings, Conidrive® Self-Guiding Drive System, Gearheads, Right Angle Drives, ShaftLoc® Products, Speed Reducers, TruMotion® Timing Belts, Multipurpose Feed & Idler Rollers, Roller Chains, Brakes, Clutches, Flexible Shafts, Gear Clamps, Sleeves, Shafts & Accessories, Universal Joints, Bearings, Linear Motion Components, Machine Screws, Motors & Gearmotors, Retaining Rings, Pins, Sprockets, Springs & Vibration Mounts

Manufacturing Facilities
SDP/SI offers a variety of Design & Manufacturing services including: Gear Cutting, Turning, Milling, and Molding.

Reference Libraries:
Elements of
Metric Gear Technology

Handbook of
Timing Belts & Pulleys

Design & Application of Small
Standardized Components:
Couplings & Universal Joints

Power Transmission Engineering
Article: Criteria for Power
Transmission Couplings

Selecting the right coupling for your application is not always an easy task. Many different application considerations and coupling styles have to be evaluated before the right coupling can be selected. We have compiled some useful information to make the selection process easier.



Fairloc® is a patented fastening device designed to replace separate clamps, keyways, pins, and set screws to solve phasing, timing, positioning and frequent removal problems.