Anti Vibration Rubber Mount Shock Absorber

Elastomer Formulation and Dynamic Properties

The core performance of an anti-vibration mount relies on the viscoelastic properties of the rubber compound. We formulate compounds in-house to target specific stiffness and damping characteristics required by different applications:

Natural Rubber (NR): Selected for general-purpose machinery due to its high resilience, excellent fatigue resistance, and superior damping capacity. It is ideal for isolating medium-to-high frequency vibrations from motors, fans, and compressors.

Neoprene (CR): Utilized when environmental exposure is a factor. CR offers balanced resistance to oil, ozone, and weathering, making it suitable for outdoor installations or equipment exposed to mild chemical splashes.

Nitrile (NBR): Specified for heavy-duty applications where the mount may be exposed to hydraulic fluids, lubricants, or fuel. NBR maintains elasticity and structural integrity in petroleum-based environments.

Hardness is typically controlled between 40 and 70 Shore A, depending on whether the application requires high deflection for low-frequency isolation or higher stiffness for heavy static loads. Damping levels are adjusted through filler selection to optimize energy dissipation without generating excessive internal heat during continuous operation.

Effective vibration isolation requires secure load transfer between the equipment base and the foundation. Our mounts utilize a sandwich construction where the elastomer is vulcanized directly to zinc-plated or stainless steel plates.

Key design elements include:

Bonding Integrity: Metal surfaces are mechanically roughened and chemically primed before molding to achieve cohesive failure strength that exceeds the tear strength of the rubber itself. This prevents delamination under cyclic shear loading.

Geometric Configuration: Depending on the load vector, we produce compression-type mounts (optimized for vertical loads), shear-type mounts (designed for lateral displacement), and combined compression-shear configurations for multi-axis isolation.

Integral Stops: Many designs incorporate molded-in limiters to prevent over-compression during shock events or seismic activity, protecting the elastomer from irreversible damage.

Hardware Integration: Threaded studs, tapped holes, or slotted bases are incorporated into the metal plates. Fasteners are graded to match the load rating of the mount, and threads are protected against corrosion.

Production utilizes compression and transfer molding presses equipped with automated cycle controls. Mold temperatures, cure times, and pressures are logged for each batch to ensure consistent cross-link density. Under-cured rubber exhibits poor creep resistance; over-cured rubber loses elasticity. Both conditions are prevented through strict process windows validated by rheometer testing.

Post-molding operations include flash removal and dimensional verification. For mounts requiring tight alignment tolerances, secondary machining of the metal plates is performed to ensure parallelism and flatness within ±0.1mm. This ensures even load distribution across all mounting points when installed.