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.

Features:

• 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)