Product features top width to height ratio 1. 6 1 maximum An optimal belt speed is 30 m/s permissible flex rate f=80 per second pix, X set wedge section belts top width to height ratio 1. 2 1 maximum recommended belt speed 42 m/s permissible flex rate f=100 per second pix, X set narrow section belts maximum recommended belt speed is 45 m/s maximum flex rate is f=100 per second for belt speed more than 45 m/sec, Pulleys must be dynamically balanced pecification special cr treated outer jacketing fabric for higher durability anti, Static, Heated oil resistant maximum belt linear speed classical section Reaching 30 at most m/sec, Wedge section up to 42 m/sec, Narrow section up to 45 m/sec temperature spectrum starting at -18 degrees Celsius, 80 c atex certified fras belts can likewise be available