HY3130 Rebound Resilience Elasticity Tester is used for determining the rebound resilience of rubber with hardness ranging from 30IRHD to 85IRHD. Rebound resilience is defined as the ratio of the regained energy to the applied energy. This energy ratio corresponds to the quotient of the resilience height and the pendulum drop height. It fully complies with. This instrument meets the following international and industry standards: ISO: ISO 4662: 1986; GB/T: GB/T 1681: 2006; HG/T 2071: 2011. Technical Specifications Model: HY3130 Rebound head diameter: Φ15mm Impact energy: 0.5J Specimen: Φ29mm×12.5mm Impacting mass: 0.34~0.35kg Impact velocity: 1.4~2m/s Apparent strain energy density: 351~463kJ/m³ Indication error: ±0.5% Dimensions: 320mm×200mm×360mm Weight: 20kg