We are leading manufacturer, supplier and exporter of Yerzley Oscillograph in Noida, Uttar Pradesh, India. Various mechanical properties of rubber vulcanizates such as resilience, dynamic modulus, static modulus, kinetic energy, creep, and permanent set under a given force in applications involving relatively small deformations can be determined conveniently with use of a Yerzley oscillograph. The PROLIFIC Yerzley Oscillograph consists of a freely supported horizontal beam, a specimen holder which can be suspended from a knife edge on one side of the beam, dead weights to apply compression loads on the test specimen, an arrangement to restrain the test specimen from moving up under the action of applied compression loads, and a recording drum with arrangement to record the amplitude of oscillations of the end of the beam.

TECHNICAL DATA
Dimensions of test specimen : 19.5 mm diameter x 12.5 mm height
Disc weights : 490 ± 5 g – 2 off ; 980 ± 10 g – 4 off ; 960 ± 20 g – 2 off
Distance of loading pins from pivot point : 254 ± 0.4 mm (left) 127 ± 0.4 mm (right); 254 ± 0.4 mm (right)
Distance of loading edges from pivot point: 40.6 ± 0.4 mm; 101.5 ± 0.4 mm; 162.6 ± 0.4 mm
Distance of recording pen from pivot point: 406 ± 1 mm
Dimension of recording drum: 119 mm diameter x 150 mm height
Speed of rotation of recording drum: 4 rpm

RELATED STANDARD
ASTM D 945 – 1992 : Standard Test Methods for Rubber Properties in Compression or Shear (Mechanical Oscillograph)