5 ton bridge crane gross weight calculation guide
Overview of Bridge Cranes
Overhead cranes, especially bridge cranes, play a key role in industry. A 5-ton bridge crane can carry a 5-ton load and is widely used in warehouses, factories and workshops. This article aims to provide a guide to calculate the total weight of a 5-ton bridge crane to ensure safe and efficient operation of workshop structures.
Key factors affecting crane weight
Design types:
- Single-beam design: One main beam supports the hoist and trolley. It is light and low-cost and is suitable for small spans and moderate lifting heights.
- Double-beam design: Two parallel main beams provide additional support and strength. It is suitable for large loads, large spans and high lifting heights, but it weighs more.
 Single Girder Overhead Crane |
 Double Girder Overhead Crane |
Span length:
Span refers to the distance between the supporting structure or rail beams, which affects the weight of the crane. As the span increases, the weight increases, and more structural components are required to maintain stability.
Lifting height:
Lifting height is the maximum distance the crane can lift the load. Higher lifting heights require longer booms and stronger structural components, which increase the total weight.
Working load class:
The working load class (e.g. A6) defines how hard and often the crane will be operated, affecting the design and weight. Cranes with higher load ratings require more reinforcement, which increases weight.
Calculating crane weight based on design type
Single-beam design:
The weight varies with span and hoist height. For example, a crane with a 5m span and a 6m hoist height weighs approximately 2,200 kg; a crane with a 15m span and a 12m hoist height weighs approximately 3,928 kg.
Double-beam design:
The weight is heavier, affected by span, hoist height and load rating. For example, a crane with a 10.5m span and a load class A6 weighs approximately 8,400 kg; a crane with a 19.5m span and a load class A6 weighs approximately 13,063 kg.
Effect of span on crane weight
As spans increase, crane weight increases, requiring stronger materials and structural components.
Hoist height and its effect on crane weight
As hoist height increases, longer cranes and additional structural components are required, increasing crane weight.
Working load rating and its impact on crane weight
Crane with higher load rating requires stronger components, resulting in increased weight. For example, A6-class cranes are designed for high-frequency operation and require structural reinforcement and additional safety features.
Practical considerations for plant design
Structural design requirements:
The plant needs to be strengthened to support the weight of the crane, including strengthening the foundation and support beams.
Cost impact:
Heavier cranes require more construction materials, increasing overall costs. Installing heavier cranes involves more complex procedures and equipment, increasing installation costs.
The total weight of a 5-ton bridge crane is critical to plant design. Key factors include design type, span length, lifting height and working load rating. Accurate weight calculation ensures safe and efficient operation of the plant structure. It is recommended to consult an engineer for accurate assessment and design considerations to prevent potential risks and ensure optimal performance.
