For optimum wear life, centre distance between two sprockets should normally be within the range 30 to 50 times the chain pitch. On drive proposals with centre distances below 30 pitches or greater than 2m, we would recommend that the drive details are discussed with our technical staff.
为了获得最佳磨损寿命，2个链轮间的中心距通常应是链条节距的30至50倍。在针对小于30个节距或大于2米的中心距提出驱动方案时，我们建议客户与我们技术人员讨论其中的驱动细节问题。
The minimum centre distance is sometimes governed by the amount of chain lap on the driver sprocket, our normal recommendation in this circumstance being not less than six teeth in engagement with the chain.
