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> Nor279 Impact Ball (ISO10140-5)
Nor279 Impact Ball (ISO10140-5)
Nor279 Impact Ball
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To be used as the “Rubber Ball “ alternative to the Tapping Machine Excitation method in accordance with the ISO 16283-2 Appendix A.2 and the ISO 10140-5 Appendix F.2
Fulfill the requirements for a “standard heavy impact source” as given in the Japanese JIS A 1418-2:2000 Standard for impact sound insulation
Hollow sphere ball
Outside diameter 178mm and thickness 32mm
Silicone rubber material
Equivalent mass 2,5 kg (+/- 0,1kg)
Coefficient of restitution at 0,8 (+/- 0,1)
Rubber hardness 40o (+/- 5o)
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