The 20A-1/20B-1 chains are both a type of roller chain, and they differ mainly in slightly different dimensions. Among them, the nominal pitch of the 20A-1 chain is 25.4 mm, the diameter of the shaft is 7.95 mm, the inner width is 7.92 mm, and the outer width is 15.88 mm; while the nominal pitch of the 20B-1 chain is 31.75 mm, and the diameter of the shaft is 10.16 mm , with an inner width of 9.40mm and an outer width of 19.05mm. Therefore, when choosing these two chains, you need to choose according to the actual situation. If the power to be transmitted is small, the speed is high, and the space is narrow, you can choose the 20A-1 chain; if the power to be transmitted is large, the speed is low, and the space is relatively sufficient, you can choose the 20B-1 chain.
Post time: Aug-24-2023