1. The classification of the supporting roller group: bearing roller groups: trough roller group, transition roller, buffer roller, self-aligning roller group return rollers group: parallel roller, v-shaped roller group 

  2. The roller specification: according to the roller diameter can be divided into: 63.5 mm, 76 mm, 89 mm, 108 mm, 133 mm, 159 mm, 194 mm, 219 mm is seperately suitable for the belt conveyor bandwidth: 500 mm, 650 mm, 800 mm, 1000 mm, 1200 mm, 1400 mm, 1600 mm, 1800 mm, 2000 mm