SPD

About SPD™ by Associated Spring Raymond

SPD™ is a trusted product brand from Associated Spring Raymond, a globally recognized engineering company with more than 135 years of expertise in force and motion control. Operating under the asraymond.com family of brands, SPD delivers precision-engineered gas springs, struts, dampers, and shock absorbers for a wide range of industrial, marine, automotive, and OEM applications.

What Makes SPD Products Stand Apart

One of the defining strengths of the SPD™ line is its commitment to offering high-quality components without requiring full custom engineering for every application. SPD products include standard Gas Struts, Dampers, Shock Absorbers, and Hardware — all offered in a broad range of sizes, strokes, and force ratings right out of the box, while custom-engineered solutions remain available when needed.

The flagship SPD n-Struts® gas struts use compressed nitrogen to generate lift force and a hydraulic circuit to control dampening, eliminating the jarring "snap effect" common in lower-quality alternatives. These struts are available in coated nitrided steel and 316 stainless steel variants, with the stainless option surpassing 500 hours of salt spray resistance per ASTM B117 — making them an excellent choice for marine, medical, and food service environments where corrosion resistance is critical.

Gas Struts & Gas Springs

Associated Spring Raymond has expanded the SPD standard gas strut portfolio to more than 12,000 pre-engineered precision options in nitride and stainless steel. Offered in varied combinations of size, stroke, length, and force, this expansive lineup gives engineers and hobbyists alike the flexibility to find the right fit without the lead time of a fully custom solution. Whether you need a simple counterbalance for a hatch or a robust lift-assist for a heavy industrial enclosure, SPD n-Struts® are engineered to perform.

Shock Absorbers & Dampers

SPD™ Industrial Shock Absorbers are purpose-built to bring motion to a controlled stop by converting kinetic energy into heat, which then dissipates through the cylinder body. Engineered for constant and repeated use, these units are available in both imperial and metric thread configurations, with stainless steel options for highly corrosive environments. SPD dampers complement this lineup by providing smooth, controlled resistance to motion without the full energy absorption of a shock absorber — ideal for applications where gentle deceleration rather than a hard stop is required.

Hardware & Accessories

Beyond struts and shock absorbers, SPD supplies a complete range of mounting hardware including end fittings, ball studs, and brackets in multiple sizes and materials. This comprehensive ecosystem of components makes it straightforward to integrate SPD struts and dampers into virtually any application, from marine hatches and automotive hoods to aerospace panels and industrial equipment enclosures.