Help Me Choose - Terminology

Handling and Lifting Terminology

Having trouble understanding what is meant by SWL? Confused by Height under beam? We understand that the world of hoisting and material handling can be complex to navigate. Let Handling and Lifting help you get to grips with the terms commonly found on our website with this easy to understand terminology guide.

 TERM DESCRIPTION
Safe Working Load (SWL) Safe Working Load (SWL) refers to the maximum load that lifting equipment, such as a sling, hook, or chain, is designed to handle safely. The term is often interchangeable with Working Load Limit. This amount will typically be listed in Kilograms or Tonnes, dependent on the item. The value is determined by the manufacturer, and is based on many factors including: the material's properties, design, and safety factors. SWL SHOULD NOT be exceeded. This can lead to equipment failure and potential accidents.
Working Load Limit (WLL) Working Load Limit (WLL) refers to the maximum load that lifting equipment, such as a sling, hook, or chain, is designed to handle safely. The term is often interchangeable with Safe Working Load. This amount will typically be listed in Kilograms or Tonnes, dependent on the item. The value is determined by the manufacturer, and is based on many factors including: the material's properties, design, and safety factors. WLL SHOULD NOT be exceeded. This can lead to equipment failure and potential accidents.

Height under beam

 Height under beam is the vertical distance from ground or floor level to the underside of a lifting beam or gantry. This measurement is important to determine the maximum height at which loads can be lifted without obstruction, and ensuring that there is adequate clearance for the safe operation of lifting equipment in your workplace.
Phases (in relation to chain hoists)

Phases (in relation to chain hoists) are the electrical phases used to power the hoist. Chain hoists can be single-phase or three-phase:

  • Single-phase hoists use single-phase power, typically found in residential, personal or light commercial applications.
  • Three-phase hoists use three-phase power, which is more common in industrial settings and provides more efficient and powerful operation.
Span Span refers to the distance between the supports of a crane or lifting beam. When referring to overhead cranes, it represents the distance between the runway rails, or the horizontal distance covered by the crane. The span determines the width of the area that a crane can service and is a crucial dimension in designing lifting systems, ensuring that they cover the required work area.
Rated Capacity Rated Capacity refers to the maximum load that lifting equipment, such as a crane, hoist, or lifting accessory, is designed to handle under normal operating conditions. This capacity is determined by the manufacturer. The rated capacity must not be exceeded to ensure safety and prevent equipment damage.

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