EN 15011:2020 Bridge and Gantry Crane Standard Explained
EN 15011:2020 "Cranes — Bridge and gantry cranes" specifies a main girder camber of S/1000, trolley gauge tolerance of ±2 mm, crane bridge tolerance of ±5 mm, static load of 1.25×, dynamic load of 1.1×, and safety device requirements.
Technical Requirements & Design Standards
EN 15011 applies to the design, manufacturing, and inspection of bridge and gantry cranes. Structural design follows EN 13001 Crane Safety Standard, electrical systems comply with IEC 60204-32, and mechanisms meet EN ISO requirements. The camber of the main girder is set at S/1000, consistent with ISO 12488. Trolley gauge tolerance is ±2 mm with joint height deviation ≤0.5 mm. Crane bridge gauge tolerance is ±5 mm with rail elevation difference of ±5 mm. Joint gaps of 1–2 mm accommodate thermal expansion. Safety devices include overload protection that stops operation at 105% load, torque limiting at 100%, and limit switches with 0.5 m/0.3 m height travel and 1 m stopping distance. Inspection covers static load at 1.25× and dynamic load at 1.1×. Kelude Heavy Industry manufactures export bridge and gantry cranes with safety devices configured to EN 15011 and CE certification.
Key Parameters & Core Requirements
Rail tolerance and safety devices are the core requirements of EN 15011. Kelude Heavy Industry designs and inspects all export bridge and gantry cranes strictly according to the standard.
| Parameter | Requirement |
|---|---|
| Camber | S/1000 |
| trolley gauge | +/-2mm |
| crane span | +/-5mm |
| static load | 1.25Times |
| dynamic load | 1.1Times |
| safety device | Action Value |
|---|---|
| Overload Limiter | 105%Stop |
| Load moment limiter (LML) | 100%Stop |
| Height Limit Switch | 0.5mearly warning/0.3mStop |
| Travel Limit Switch | Before End Point1mStop |
EN 15011:2020 mandates the safety device requirements for bridge and gantry cranes. The overload limiter must automatically cut off the hoisting power supply when the lifted load exceeds 105% of the rated load, while still permitting lowering to allow the operator to safely manage the suspended load after an overload warning. The load moment limiter (LML) stops hoisting and derricking when the load moment reaches 100% at the rated radius. The height limit switch issues an early warning at 0.5m before the hook reaches its uppermost limit position and automatically stops the hoist at 0.3m, ensuring sufficient braking distance. The travel limit switches on both the crane bridge and trolley automatically stop travel 1m before the end of the rail to prevent derailment. All safety device set points must be calibrated regularly, at least once per year. Kelude Heavy Industry's bridge and gantry cranes exported to Europe come standard with all safety devices, meeting CE Certification requirements.
EN 15011:2020 makes safety devices mandatory, explicitly defining them as part of the crane's basic configuration that cannot be omitted or simplified under any circumstances. The overload limiter and load moment limiter are active safety devices that directly prevent overloading accidents, while the height limit switch and travel limit switch are passive safety devices that prevent over-travel incidents caused by operator error. All safety device set points must be calibrated at least every six months, and calibration records must be kept in archival storage.
FAQ: EN 15011 Safety Device Requirements
Q: What are the specific requirements for camber of main girder and track accuracy under EN 15011:2020?
A: Camber = span/1000 (e.g., 20mm camber for a 20m span). Deflection under rated load ≤ L/400 to L/500 (camber reduces accordingly). Camber must be re-measured annually, with annual deflection ≤ S/3000. Trolley gauge tolerance ±2mm, joint height difference ≤ 0.5mm. Crane span tolerance ±5mm, elevation difference ±5mm, with adjacent points within 3mm. Rail joint gap: 1–2mm.
Q: How do EN 15011 and ISO standards differ on safety device set points?
A: EN 15011 aligns with ISO 12480. Overload at 105% stops hoisting (lowering permitted). Load moment at 100% stops hoisting and derricking. Height limit: warning at 0.5m, stop at 0.3m. Travel stops 1m before the end of stroke. Both standards are fully consistent in their requirements.
Q: What are the static and dynamic load test requirements for bridge and gantry cranes?
A: Static load test at 1.25× rated load, held at mid-span for 10 minutes; deflection ≤ L/400 to L/500 with residual deflection ≤ 20%. Dynamic load test at 1.1× rated load, with hoisting, trolley, and crane bridge each cycled at least 3 times to verify braking distance and safety device interlocking. The crane may only leave the factory after all tests pass.
Q: What is Kelude's standard EN configuration for bridge and gantry cranes exported to Europe?
A: Kelude Heavy Industry designs its European-bound bridge and gantry cranes according to EN 15011, with EN 13001 Crane Safety Standard as the design basis. Safety devices include: overload limiter at 105%, load moment limiter at 100%, height limit switch at 0.5m/0.3m, travel limit switches at 1m, plus buffers and buffer stops. Factory testing includes 1.25× static load and 1.1× dynamic load tests, followed by CE conformity certification.
