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Resource CenterWhat to know before choosing a crane.
From duty class to rail line tolerances, from periodic inspection regulations to comparing quotes — technical guides that actually help on site.
Technical guides
Crane Duty Class (FEM / ISO / CMAA)A crane isn't selected by capacity alone. Duty class is set by the load spectrum and daily operating time. FEM 9.511, ISO 4301 and CMAA compared.Single Girder or Double Girder?The differences between single-girder and double-girder overhead travelling cranes: capacity, span, lifting height, hook approach, cost and maintenance.How to Measure a CraneThe crane measurements needed for a quote: how to measure span, lifting height, hook approach distance, runway length and headroom.Crane Rail and Runway AlignmentHow is a crane runway selected and aligned? Crane rail types, fixing methods, span and level tolerances, and the damage a bad runway causes.Conductor Line or Festoon Cable?Crane power-supply systems compared: enclosed conductor line versus festoon cable, their advantages, maintenance needs, and which suits which facility.Variable Frequency Drives and Load SwaySpeed control on cranes with a variable frequency drive (VFD): smooth start/stop, the causes of load sway, and anti-sway systems.Overload Protection and Safety SystemsOverload limiters, limit switches, e-stops, brake systems and anti-collision on cranes: what each safety function does and which are mandatory.Wire Rope and Chain Discard CriteriaBroken wires, diameter reduction, corrosion and deformation in wire rope and lifting chain: ISO 4309-based discard criteria and how to inspect them.Crane Periodic InspectionPeriodic inspection for cranes: typical inspection interval, test load, who can carry it out, and how to prepare — a general guide, not a substitute for your local regulation.Modernize or Replace? A Crane Decision GuideWhen does modernizing an older crane make sense, and when is a new crane needed? Typical modernization items and the decision criteria.What Determines Crane PriceThe technical factors behind crane price: capacity, span, duty class, lifting height, speed, controls and runway. A guide to comparing quotes.CE Marking, Compliance and the Technical FileWhat CE marking on a crane means, what the technical file contains, who issues the declaration of conformity, and what a substantial modification changes on an existing crane.Smart Cranes and Remote MonitoringAutomation and remote monitoring on cranes: position tracking, anti-sway, load logging, predictive maintenance. Which one actually pays off, and where.Operator Training and Crane SafetyWhat a crane operator needs to know: daily checks, rigging a load, signalling, prohibited practices and emergency response.Wheel Loads and Building Structural DesignWhat is crane wheel load, how does it transfer to the building, what to check when adding a crane to an existing structure, and when a freestanding runway structure is needed.Crane Energy Use and Operating CostWhat determines a crane's energy consumption, what a VFD saves, and how to work out the total cost of ownership.