elasto Friction-Mount elasto-Friction Elements are used in the paper and textile industries. Used as friction drive rollers for paper, cardboard, cloth and other lightweight materials. elasto-Friction Wheels are manufactured from 80 Shore Neoprene rubber with a steel insert.,, Part No. (D) (b) (d) (B) mm mm mm mm RR40 40 10 25 13 CR 80 RR45 45 11 28 14 CR 80 RR50 50 12 32 16 CR 80 RR56 56 14 35 18 CR 80 RR63 63 16 40 20 CR 80 RR71 71 18 45 22 CR 80 RR80 80 20 50 25 CR 80 RR100 90 22 55 27 CR 80 RR100 100 25 65 30 CR 80 RR112 112 28 70 33 CR 80 RR125 125 32 80 37 CR 80 RR140 140 36 90 41 CR 80 RR160 160 40 100 45 CR 80