Types of Overhead Cranes
Overhead cranes are manufactured in many configurations, but there are four types that are most commonly used. Here, I’ll try to describe each of these 4 basic types with their most important features. Hopefully, that will help you decide what type of equipment you need for your project.
The top running crane – Basically, the bridge of this overhead crane consists of the runway beams with rails mounted onto them. A crane travels on these rails and the beams are supported by the existing columns or by the free standing, precisely engineered columns.
The under running crane – The bridge of this crane is designed to travel on a runway beam too, but on its bottom flange. In this configuration type, the building’s roof structure is used to support the runway beam.
The single girder crane – This overhead crane type consists of a single bridge girder, 2 end trucks and a trolley hoist that’s running between these end trucks along the bridge girder’s bottom flange.
The double girder crane- This overhead crane consists of trolley hoist assembly, 2 end trucks and, as it name suggests, 2 bridge girders. The trolley hoist is engineered to travel on top of rails mounted onto the top of the girders.
Sometimes you don’t need a full installation of overhead crane but a monorail crane or workstation to meet all your material handling needs. When considering the various overhead crane types, make sure you consider number of cranes you need, what’s the hoist and crane capacity, what’s the number of lifts/hour, the hook height, span etc. Also, make sure you’re aware of operating conditions, existing support structure and/or runways in place, as well as other important considerations.
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(800) 715-8411 and their website!