long life garland idler roller: 1,high precision; 2,max load ... ,000 hours' of long lifetime; 4,pass ISO9001. Long life garland idler roller: has simple structure, with minimum start torque ... , adopts prolonged labyrinth, it has 4000 hours of long life and free from maintenance in lifetime.Equipped with professional design ... final needs with low price and good quality. long life garland idler roller