Working Load Limit

Working load limit, abbreviated as WLL, also called safe work load, abbreviated as SWL, is the maximum weight or force that a piece of equipment or machinery can safely handle under normal use conditions.  The WLL is determined by the manufacturer of the equipment or machinery and is typically specified in terms of weight.  It represents the maximum load that can be applied without causing the equipment to fail or malfunction.

It's important to note that the WLL is based on various factors such as material strength, design, and intended usage conditions.  Exceeding the WLL can lead to equipment failure, accidents, and injuries.  Therefore, it's crucial for operators and users to adhere to the specified WLL and follow all safety guidelines provided by the manufacturer.

 

Working Load Limit formula
\( WLL =   MBL \;/\; FS \)     (Working Load Limit) \( MBL =  WLL \; FS  \) \( FS =  MBL \;/\; WLL \)
Symbol	English	Metric
\( WLL \) = working load limit	\(lbf\)	\( N \)
\( MBL \) = maximum breaking load	\(lbf\)	\( N \)
\( FS \) = factor of safety	\( dimensionless \)