Nor279 Impact Ball

Nor279 Impact ball

Nor279 Impact ball is a product developed for use as an impact source for measurements of impact sound insulation performance – for example of floors in collective housing.

Specifications

• Rubber raw material: Silicon rubber
• Shape: Hollow sphere, diameter 178 ±1 mm, wall thickness 32 mm
• Equivalent mass: 2.5 ±0.1 kg
• Restitution coefficient: 0.8 ±0.1
• Rubber hardness: 40º ±5º
• Impact force characteristics: Impact force waveform (Example)

Standards

• ISO 10140-3:2021
• ISO 10140-5 Annex F:2021
• ISO 16283-2:2020
• JIS A 1418-2