Bennewart Flex Tester
Product Details:

• Request a Quote for Bennewart Flex Tester Bennewart flex testing is intended to determine the resistance of a component of material to cut growth during repeated flexing. It can also be used to assess the effect of surface patterns on crack initiation and growth. This test is especially applicable to the outsoles of footwear, but may also be used with certain other flexible components.
• The PSI Bennewart Flex Tester consists of a drive unit comprising of an electric motor with pulleys and belts system to give the desired speed to an eccentric and link mechanism to give an oscillating movement to one of the two grips holding the two ends of test specimens, the other grip being fixed.
  
• The oscillating grip has gun metal bushes, which slides on two hardened and ground bearing steel rods to give it a long working life. Each grip consists of swivable bases pivoted on ball bearings so that the two ends of the test specimens are free to align themselves with the natural contour of the specimen during flexing.
• The axis about which the grip bases oscillate lies in the plane of their specimen holding face. A six digit pre-set electronic digital counter counts the numbers of test cycles and also stops the motor after pre-set numbers of test cycles.
  
• The apparatus is finished in grey hammertone stoving painting and bright chrome / zinc plating to give it a corrosion resistant finish.
  A cutting die for preparation of test specimen from sheet and slitting punch with jig for making initial crack are available as optional accessories.
  TECHNICAL DATA
  Number of test specimens tested 2 for full sole, 6 for cut test specimens
  Angle of flexing 90°
  Diameter of bending mandrel 30 mm
  Frequency of operation 125 to 150 cycles/minute
  Motor ½ HP single-phase 230 volts AC
  Counter Six digit pre-set type digital type with memory backup
  RELATED SPECIFICATIONS
  DIN 53543 ­ 1979 Testing of Semi Rigid Polyurethane (PUR) Integral Cellular Materials ­ Materials for Soles and Parts of Shoes
  SATRA ­ PM 161 Bennewart Flex Test Resistance to Cut Growth on Flexing
  IS 15298 (Part 1) -2002 Safety, Protective and Occupational Footwear for
  ISO 8782 (Part 1) - 1998) Professional Use Part 1 : Requirement and Test
  Method BS EN 344 - 1993 Requirement and Test Methods for Safety, Protective, and Occupational Footwear for Professional Use