GSN Series Gas Springs BM Plate Type Body Only

This BM plate type gas spring body-only unit is used in injection mold tooling where a compact, repeatable lifting or return force is needed without a complete external assembly. Since it is supplied as body only with no hose-linked gas venting, it integrates cleanly into fixed mold frames and avoids additional pneumatic plumbing inside the tooling cavity area.

• Short-stroke mold accessories: Ideal for applications requiring controlled movement within a 5 to 100 mm stroke window, such as small ejection-assist mechanisms and compact lifter actuation systems.
• Automotive component molds: Suitable for stable, bottom-face clamping (square) mounting where space is limited and consistent force supports smooth operation over production cycles.
• High-cycle production fixtures: Choose the appropriate initial load (e.g., 3750 to 20000 N) to maintain reliable positioning for repeatable handling during mold open/close or tool-linked motions.

The square bottom-face clamping flange helps prevent rotation and supports accurate alignment in confined mold bases.

The provided product data specifies the GSN BM plate type configuration and performance ranges, but it does not list a specific steel grade or heat-treatment state for the body. Therefore, no hardness (HRC), nitriding, or quench-and-temper details can be confirmed from the available information.

From a mold-engineering perspective, gas spring bodies for industrial tooling are typically manufactured from wear- and fatigue-resistant steels and then finished to stabilize dimensional control under cyclic loads. However, without the exact material designation and treatment process, any claim about specific grade equivalence (e.g., SKD61/H13) or guaranteed HRC hardness would be speculative.

• Material comparison: Not available in the supplied specs because only the BM plate type (GSN) and force/stroke dimensions are provided.
• Heat treatment: Not specified in the input data for this body-only variant.

To select the correct dimensions for this gas spring body-only unit, start by matching the required stroke and the available mounting envelope inside your mold base. The stroke S is specified as 5 to 100 mm, so choose a unit whose stroke range can cover the travel you need for the lifter, ejector assist, or return function without bottoming out.

• Outer diameter (D): Select from 32, 38, 50, or 63 mm based on the clearance between adjacent mold components and surrounding tool steel.
• Body length (L): Use the 45 to 235 mm L dimension to fit the available axial space from the clamping face to your linkage/clearance points.
• Load selection: Pick an initial load of 3750, 7500, 15000, or 20000 N to meet the force requirement at your operating condition.

Because this is bottom face clamping (square) flange mounting, ensure the cavity/core (or tie-block area) provides a matching square clamping geometry and sufficient flatness for stable seating. Tolerance/fit values are not provided, so final fit verification should be done using the supplier’s drawings for the selected D and L.