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Extension Springs from SDP/SI

Press Release  |  September 3, 2013  |  Hicksville, NY

Extension Springs from SDP/SI

SDP/SI (ISO 9001 + AS9100 Registered) offers extension springs for use in light load, high precision applications. Identified as the (Inch) S78ESY-... series and (Metric) S78ESYM... series, they come in both inch and metric sizes, with a wide range of ODs, lengths and spring rates to ensure that your exact requirements are met. They are well suited for use in anti-backlash gears, as well as all types of instrumentation applications. The constant resisting force prevents imprecise placement of indexes.

The springs are made of spring tempered 302 stainless steel, which makes them very corrosion resistant. They also have a uniform body diameter, which is important in applications with space restrictions. We also supply spring posts for mounting the springs. Be sure to contact one of our application engineers to ensure that your assembly will function properly.

SDP/SI is a leading manufacturer of small mechanical components, servicing a wide variety of aerospace, medical and commercial industries for over 50 years. Quotes, online orders, and 3D CAD Models are available on our updated estore at SDP/SI offers over 130,000 small mechanical components, including gears, belt and chain drives, shafts, shaft accessories, bearings, couplings, universal joints, vibration mounts, miscellaneous components, hardware, gearheads and speed reducers, right angle drives, brakes and clutches, motors and gearmotors. For additional information about SDP/SI please visit

Stock Drive Products / Sterling Instrument (SDP/SI), 250 Duffy Avenue, Hicksville NY 11801. Phone: 1-800-819-8900 | 516-328-3300 • Fax: 516-326-8827.