When selecting a lifting chain, the key is to ensure that it meets the requirements related to the load, operating conditions, and safety standards; it cannot be chosen as an ordinary iron chain. Below are several important factors to consider when making a decision. Determine the load and safety factor: Identify the weight that needs to be lifted, taking into account any possible dynamic or impact loads. The working load limit (WLL) of the chain represents the absolute upper limit for safe use, and the chain must not be overloaded. The safety factor for lifting chains is usually 4:1, meaning that its breaking strength is four times that of its rated working load.