Why Is Correct Crane Selection Important?
Wrong crane selection can lead to accidents, production losses and unnecessary costs. A crane under capacity creates a safety risk while an oversized crane strains the budget.
1. Lifting Capacity
Crane capacity is determined by the maximum weight to be lifted. Hook, sling and spreader-beam weights must be added to the load weight. It is an industry standard to choose a capacity at least 25% above the planned load as a safety factor.
2. Lifting Height
How high the load must be lifted from the ground directly affects crane type and model. In indoor applications, ceiling height is the limiting factor.
3. Work Area and Span
The work area to be covered should be planned according to the distance between the pick-up and drop-off points of the load.
4. Duty Cycle and Class
How many hours per day and days per week the crane operates and the number of load cycles determine the duty class. Classification according to FEM standards is A1-A8. Selecting a low-class crane for intensive use causes early wear and breakdowns.
5. Environmental Conditions
Indoor or outdoor, temperature range, humidity, dust and corrosive environment all affect crane material and protection class. Ex-proof in chemical plants, stainless steel in food plants and galvanized structures outdoors should be preferred.
6. Speed Requirements
Lifting, travel and bridge motion speeds should be determined based on production pace. Variable-frequency drives are essential for applications requiring precise positioning.
7. Power Supply
Electrical supply is provided via cable reel or festoon/conductor-bar systems. The facility's electrical infrastructure must be capable of handling the crane motor powers.
8. Safety Systems
Overload protection, limit switches, anti-collision sensors, wind-speed sensors and emergency-stop buttons are standard safety equipment on modern cranes.
9. Maintenance and Spare Parts
The manufacturer's service network, spare-parts availability and technical-support capacity directly affect long-term costs.
10. Total Cost of Ownership
Purchase price alone should not be the decision criterion. Installation, training, maintenance, energy consumption, spare parts and periodic inspection costs make up the total cost of ownership.