​The test consists of dropping a steel ball on a foam specimen and noting the height of rebound. The ball rebound tester consists of a 40±4 mm inside diameter vertical clear plastic tube, such as acrylic, into which a 16±0.05mm diameter steel ball is released by a magnet or other device. The steel ball must be released so that it falls without rotation.

Testing Steps:

(1) Center the specimen at the base of the tube and adjust the height of the tube so that zero rebound is 16mm above the surface of the foam specimen.

(2) Mount the steel ball on the release mechanism, then drop it and note the maximum rebound height. If the ball strikes the tube on the drop or rebound, the value obtained is invalid. This condition is usually due to the tube not being vertical or irregularities on the specimen surface. In order to minimize parallax error, the circles on the tube in the region where the percent rebound is read must appear as lines.

(3)Make an additional two drops on the same specimen in the same location unless agreed upon by purchaser and supplier.

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  Ball falling distance:460±0.5%mm(China standard) 500±0.5%mm(American standard)

  Ball diameter: Φ16±0.05 mm

  Falling ball rebound rate accuracy:1.5

  The tested sample size:100 mm(L)×100 mm(W)×50mm(H)

  
  

  Standards:GB/T6670-97,ASTM(American standard)D3574 and ISO8307

Dongguan Hust Tony instruments Co., Ltd ( Tony International(HK)Co., Ltd. ) has been manufacturing and developing testing machines for more than 15 years.

Our Main products are Furniture Testing Instrument, Toys Testing Equipment,Textile Testing Instrument, Leather shoes Test Equipment, Universal Testing instruments, Continue its advanced design technology and concept, excellent technology of producing and outstanding system of quality management, Tony Instruments has achieved good repute in the fields of textile testing equipments, toy testing equipments, furniture testing and other measurement test equipments. Our long-term partners include the world's two largest inspection companies SGS and TUV. 

We produce equipments in line with international market testing standards, meanwhile, we provide customers with complete solutions for laboratory testing. 

- Design program for laboratory 

- Provision of all testing machines and consumables 

- Installation and training 

- Maintenance plan service 

- Professional calibration and measure services 

Some of our important customers, include: 

SGS in France, SGS in Vietnam, SGS in China, SGS in Korea, Intertek in China, SAT in China, BACL in Shenzhen, NSF in Shanghai, ITS, BV, TUV and etc. 

Sincerely administration make Tony sales network extend all over the world. Up to day Tony products spread to countrywide users. In overseas, we have customers from Vietnam, Thailand, Indonesia, Europe, Iran, Pakistan, USA, Canada, Mexico, Argentina and etc. 

Our Testing machines are widely used in Textile, Toys, Furniture, packaging, footwear, leather products, environment, baby products, hardware, electronic products, plastic products, rubber products and other industries, and are applicable to all scientific research units, quality inspection institutions and academic fields.