How to Choose the Right Overhead Crane for Your Business

Author:
WEC 15 ton Overhead Gantry Crane

Choosing the right overhead crane is a significant investment decision. Get it right and you’ll have a lifting solution that improves productivity, safety, and efficiency for decades. Get it wrong and you’ll face costly modifications, premature wear, or a crane that simply doesn’t meet your needs. This guide walks you through the key factors to consider.

The Six Key Decision Factors

Before you speak to any crane supplier, you need to understand six fundamental specifications. These will determine everything from the crane type to the price.

1

Capacity

How much weight do you need to lift?

2

Span

How wide is the area the crane needs to cover?

3

Lifting Height

How high do you need to lift loads?

4

Duty Cycle

How frequently will the crane operate?

5

Girder Type

Single girder or double girder?

6

Controls

How will operators control the crane?

1. Capacity: What Weight Do You Need to Lift?

Capacity is usually the starting point. You need to know the maximum weight you’ll be lifting – not the average, but the absolute heaviest load the crane will ever need to handle.

Important: Always Allow a Safety Margin

Don’t specify a crane that exactly matches your heaviest load. Allow headroom for future needs, load variations, and the weight of any lifting accessories (spreader beams, magnets, grabs) which count towards the total lifted weight.

Consider both your current requirements and potential future needs. Upgrading a crane’s capacity after installation is expensive and sometimes impossible – it’s much more cost-effective to specify slightly higher capacity from the start.

Typical Capacity Ranges by Application

1-3 Tonnes
Light manufacturing, assembly, small workshops, maintenance tasks
5-6 Tonnes
General engineering, machine shops, warehousing, fabrication
10-15 Tonnes
Heavy fabrication, steel stockholding, automotive components
20+ Tonnes
Heavy industry, steelworks, shipbuilding, power generation

View our overhead crane range by capacity to see what’s available from 1 tonne to 60+ tonnes.

2. Span: How Wide Does the Crane Need to Reach?

The span is the distance between the runway rails – essentially, how wide an area the crane can cover. This is usually determined by your building width or the width of the area you need to service.

Key considerations for span:

  • Building columns – the crane runway is typically mounted on or adjacent to the building’s structural columns
  • Coverage area – ensure the hook can reach all areas where you need to lift and place loads
  • End approaches – how close to the runway ends does the hook need to travel?
  • Obstructions – account for any columns, machinery, or other obstacles

Span Impacts Crane Type

Larger spans generally require double girder cranes for structural rigidity. Single girder cranes typically work well for spans up to around 20-25 metres, while double girder cranes can span 30+ metres.

3. Lifting Height: How High Do You Need to Go?

Lifting height – also called hook height or height of lift – is the distance from the floor to the hook at its highest position. This depends on:

  • Building height – your available headroom sets the upper limit
  • Stacking requirements – how high do you need to stack materials or load onto vehicles?
  • Machinery clearance – do loads need to pass over equipment at height?
  • Below-hook equipment – spreader beams, grabs, and lifting accessories reduce effective hook height

If headroom is limited, consider a low-headroom hoist design which maximises lifting height in constrained spaces. Single girder cranes with underslung hoists typically offer better hook height than double girder cranes in the same building.

4. Duty Cycle: How Hard Will the Crane Work?

Duty cycle (or duty classification) describes how intensively the crane will be used. This affects component selection, design life, and ultimately cost. A crane used occasionally for maintenance tasks needs different engineering than one running continuously on a production line.

Classification Usage Pattern Typical Applications
Light Duty Occasional use, light loads relative to capacity Maintenance workshops, repair facilities, stores
Medium Duty Regular use, moderate loads General manufacturing, warehouses, fabrication shops
Heavy Duty Frequent use, often at or near full capacity Steel processing, busy production lines, foundries
Severe Duty Continuous operation, high loads, demanding environment Steelworks, 24/7 production, ports, heavy industry

Be honest about your duty requirements. Under-specifying duty classification to save money leads to premature wear, frequent breakdowns, and ultimately higher lifetime costs.

5. Single Girder vs Double Girder

One of the most fundamental choices is whether to go for a single girder or double girder crane. Each has advantages depending on your application.

Single Girder Cranes

One main beam with hoist running underneath
  • Lower initial cost
  • Lighter weight – less demand on building structure
  • Better hook height in limited headroom
  • Faster installation
  • Spans typically up to 25m
  • Capacities typically up to 10-15 tonnes
Best for: Light to medium duty applications, limited headroom, cost-sensitive projects, spans under 20m

Double Girder Cranes

Two main beams with hoist running on top
  • Higher capacities available (up to 60+ tonnes)
  • Longer spans possible (30m+)
  • Greater rigidity and stability
  • Better for heavy duty cycles
  • More options for accessories
  • Walkway access possible for maintenance
Best for: Heavy loads, long spans, high duty cycles, heavy industry applications

In many applications, single girder cranes offer the best value. But for heavy lifting, long spans, or demanding duty cycles, double girder is the right choice. A good supplier will advise on which type suits your specific requirements.

6. Controls: How Will Operators Control the Crane?

Crane controls affect safety, productivity, and operator comfort. The main options are:

Pendant Control

Wired handset connected to the crane. Reliable and cost-effective. Operator walks with the load.

Radio Remote

Wireless control giving operator freedom to position themselves safely. Ideal for longer spans and better visibility.

Cab Control

Operator sits in a cab mounted on the crane. Used for intensive operations, outdoor cranes, or where close load supervision is needed.

Radio remote controls have become increasingly popular as they allow the operator to stand in the safest position with the best view of the load. They also eliminate trailing pendant cables which can be a trip hazard or snag on loads.

Consider Variable Speed Controls

Inverter-controlled drives allow smooth, variable speed operation on all crane motions. This improves load positioning accuracy, reduces load swing, and extends component life. It’s particularly valuable for precision work or when handling delicate loads.

Building and Installation Considerations

Your building has a major impact on crane selection. Before specifying a crane, you need to understand:

For Existing Buildings

  • Structural capacity – can the columns and foundations support the crane loads?
  • Available headroom – what’s the clearance under roof trusses and services?
  • Access for installation – how will the crane be brought in and erected?
  • Runway mounting – can runways be fixed to existing steelwork?
  • Power supply – is adequate electrical supply available?

For New Buildings

If you’re building a new facility, involve the crane supplier early. The building can be designed around the crane requirements, which often results in a more efficient and cost-effective solution than retrofitting a crane to an existing structure.

Free-Standing Cranes

If your building structure can’t support a crane, or you need a crane in an open yard, free-standing cranes with their own supporting structure are an option. These are independent of the building and can even be relocated if needed.

Hoist Selection: Wire Rope or Chain?

The hoist is the component that does the actual lifting. Two main types are used on overhead cranes:

Factor Electric Chain Hoist Wire Rope Hoist
Capacity range Up to about 5 tonnes From 1 tonne to 100+ tonnes
Lifting height Typically up to 6-8m (limited by chain length) Much greater heights possible
Duty cycle Light to medium duty Light to severe duty
Speed Generally slower Higher speeds available
Cost Lower initial cost Higher initial cost
Best for Light duty, limited height, budget-conscious applications Higher capacities, greater heights, heavy duty applications

For most industrial overhead crane applications, wire rope hoists are the preferred choice due to their greater capacity, height, and duty capabilities. Electric chain hoists work well for lighter applications and workstation cranes.

Questions to Ask Your Crane Supplier

Before You Commit, Ask:

  1. Will you conduct a site survey to assess building suitability?
  2. What’s included in the price? (installation, commissioning, training, certification)
  3. What’s the lead time from order to installation?
  4. What warranties do you offer on components?
  5. Do you provide ongoing servicing and maintenance?
  6. What happens if we need to change specifications during the project?
  7. Can you provide references from similar installations?
  8. What compliance documentation will be provided? (EC Declaration, LOLER reports)
  9. What spare parts availability can you guarantee?
  10. Do you offer emergency breakdown support?

The Buying Process: What to Expect

1

Initial Consultation

Discuss your requirements, application, and constraints with the supplier. A good supplier will ask lots of questions to understand exactly what you need.

2

Site Survey

The supplier visits your site to assess the building, take measurements, identify any structural concerns, and understand the operating environment.

3

Proposal and Quotation

You’ll receive a detailed proposal specifying the crane design, components, installation scope, timeline, and price. Review this carefully and ask questions.

4

Design and Manufacture

Once you approve the proposal, detailed design work begins. The crane is manufactured, typically taking 8-16 weeks depending on complexity.

5

Installation and Commissioning

The crane is delivered, installed, tested, and commissioned. This includes load testing and verification that all safety systems function correctly.

6

Handover and Training

Operator training is provided, along with all documentation including EC Declaration of Conformity, operating manuals, and LOLER thorough examination certificate.

Information to Gather Before Contacting Suppliers

Your Requirements Checklist

  • Maximum load weight to be lifted (including lifting accessories)
  • Typical load weight for everyday use
  • Required span (distance between runways)
  • Required lifting height (floor to hook at highest point)
  • Available headroom in the building
  • Runway length (long travel distance)
  • Expected usage frequency (lifts per hour/day)
  • Building drawings or dimensions
  • Any special requirements (explosion-proof, clean room, outdoor use)
  • Timeline for installation
  • Budget range (if known)

The more information you can provide upfront, the more accurate and useful the supplier’s proposal will be.

Need Help Choosing the Right Crane?

Our team can advise on the best crane solution for your application. We’ll survey your site, discuss your requirements, and provide a detailed proposal with no obligation.

Get Expert Advice

Summary

Key Takeaways

  • Capacity – specify for your maximum load plus a safety margin for future needs
  • Span – determined by your building width and coverage requirements
  • Lifting height – consider building headroom and any below-hook equipment
  • Duty cycle – be honest about usage to avoid premature wear
  • Single vs double girder – single for lighter duty and cost savings, double for heavy loads and long spans
  • Controls – radio remotes offer flexibility and safety advantages
  • Building – assess structural capacity and involve crane suppliers early for new builds

An overhead crane is a long-term investment that should serve your business for 20-30 years or more. Take time to specify it correctly, choose a reputable supplier who will support you throughout the crane’s life, and don’t make decisions based solely on initial price. The right crane, properly installed and maintained, will pay for itself many times over in improved productivity and safety.

Explore our full range of overhead gantry cranes, or contact us to discuss your requirements with our team.

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