STH .25M & 1.5M x 2 / Non-adjustable

Non-adjustable micro-bore hydraulic shock absorbers

can accommodate varying energy conditions. This family of tamperproof shock absorbers provides consistent performance, cycle after cycle. Non-adjustable models are designed to absorb maximum energy within a compact envelope size.

The Enidine STH Series offers the highest energy absorption capacity relative to its size. These custom-orificed shock absorbers are designed to meet exact application requirements. STH Series shock absorbers are available in fully threaded cylinder bodies, providing flexibility in mounting configurations.

Features and Benefits

. Extensive non-adjustable product line offers flexibility in both size and energy absorption
  capacity to fulfill a wide range of application requirements.
. Threaded cylinders provide mounting flexibility and increase surface area for improved
  heat dissipation.
. Tamperproof design ensures repeatable performance.
. A select variety of surface finishes maintains original quality appearance and provides the
  longest corrosion resistance protection.
. Special materials and finishes can be designed to meet specific customer requirements.
  Incorporating optional fluids and seal packages can expand the standard operating
  temperature range from (-10 °C to 80°C) to (-30°C to l00°C).

Constant orifice area damping (dashpot) provides the largest shock force at beginning of the stroke when impact velocity is highest. These shock absorbers provide high-energy absorption in a small, economical design.

The internal structure of a single orifice shock absorber is shown above. When a force is applied to the piston rod, the check ball is seated and the valve remains closed. Oil is forced through the orifice, creating internal pressure allowing smooth, controlled deceleration of the moving load. When the load is removed, the compressed coil spring moves to reposition the piston head, the check ball unseats, opening the valve that permits rapid return of the piston head rod to tile original extended position.

The closed cellular foam accumulator is compressed by the oil during the stroke, compensating for fluid displaced by the piston rod during compression. Without the fluid displacement volume provided by the foam accumulator, the closed system would be hydraulically locked.

Single-orifice shock absorbers provide constant orifice area (dashpot) damping.