Knowledge Center
The Aylen Knowledge Center brings together our technical guides on overhead crane selection, safety functions, fault diagnosis, maintenance and standards. They are written from real situations we encounter on the sites where we have been manufacturing, installing and servicing cranes for more than 20 years, and are updated regularly.
If you cannot find what you are looking for, send us your question; we will answer it and, where useful, turn it into a new guide.
Selection and engineering
How to Select a Crane Duty Class: FEM 9.511 and ISO 4301 Guide
The duty class describes how heavily and how often a crane works. The correct class is found by combining the load spectrum (L1–L4) with the average daily operating time. A wrong…
Read the guideSingle Girder or Double Girder? Overhead Crane Selection Guide
Choose double girder for high capacity, large span, critical hook height or intensive use; single girder is right for light to medium loads, medium spans and an economical…
Read the guideSafety functions
Crane Brake and Limit Switch Inspection: Step-by-Step Guide
Brakes and limit switches are the most critical safety elements of a crane. Brakes must be checked with a daily function test, air gap and lining measurement and a slip test…
Read the guideCrane Overload Protection and Safety Functions
Overload protection prevents a crane from lifting loads above its rated capacity. The load is measured by a sensor, a pre-warning is given and hoisting is cut off when the limit…
Read the guideFaults and diagnostics
Maintenance and modernization
Inverters (VFDs) and Speed Control on Cranes
An inverter controls crane motor speed steplessly, giving smooth starts and stops, precise positioning, less mechanical wear and energy savings. Correct brake control on the…
Read the guideHow to Set Up a Crane Maintenance Plan
A good maintenance plan includes regular checks set according to how intensively the crane is used, a record of every job, critical spare parts kept ready and statutory…
Read the guideStandards and regulations
Quick Quote Form
Fill in the form and our technical team will get back to you shortly.