While a top-running bridge crane can easily handle loads up tp and in excess of 25 tons (depending on the configuration), not every working space is spacious enough for this overhead crane solution. However, there are options to easily and efficiently bring overhead cranes into your space, without breaking the budget.
Before we delve into the various types of overhead cranes, it’s essential to understand the basic crane components and their functions.
Overhead Crane Components
Bridge – this is the primary structural component connecting the runways, which allows the hoist to move forward and backward via a trolley. The bridge utilizes a single or double girder design, depending on span lengths and load requirements.
Runway – is usually a part of the building structure, the runway (2 for overhead bridge cranes) allows the crane to travel up and down the bays.
Trolley – this is the assembly that supports the hoist and travels horizontally along the bridge, positioning the hoist and hook before raising or lowering a load. The “under-running” (underhung) trollies are specifically designed for lighter loads and more straightforward operation.
Hoist – typically falls into one of three types: manual, electric, and pneumatic (compressed air). Using either wire rope or chain, the hoist lifts and holds, lowers, or raises the attached load.
Workstation Cranes
Ideal for smaller work areas and lighter loads generally ranging from 150 lbs. – 2 tons. Workstation cranes are suitable for positioning loads and repetitive lifting while providing ergonomic benefits for the operator and nearby workers. These cranes incorporate either freestanding supports or may be attached to the roof structure. The V-shaped track profile prevents dirt and debris from accumulating while maintaining proper alignment of the trolley wheel and end truck.
Workstation cranes typically enhance workflow efficiency while improving worker productivity and safety. Additional options can include telescoping bridges, cantilevered runways, and tractor drives to help you get the most effective use of a small space.
Monorail Cranes
This option is ideal for production or assembly line usage; these cranes utilize a smaller bridge or girder system than their larger workstation cousins. As a result, there is no side-to-side trolley travel; materials can only move back and forth using a straight or curved track.
Many monorail crane systems attach to an existing structural I-beam, which allows them to remain cost-effective while providing a versatile overhead crane solution for numerous industries.
Gantry Cranes
Gantry cranes typically feature a quick set-up and tear-down process, making them portable and ideal for use in multiple facilities or work areas. Instead of using suspended runways, a gantry crane uses legs that travel along rails supported by the floor or ground. These cranes are typically used for outdoor locations where installing beams and columns is not an option.
Optional designs include:
Adjustable gantries can move materials through doors and aisleways, and over and under existing obstacles.
Portable gantries are ideal for plant maintenance tasks and industrial truck services that require frequent movement between locations.
Track-mounted gantries are ideal for moving heavy loads over a fixed route using manual or motorized means.
As you might expect, gantry cranes are extremely popular with steel mills, special construction projects, shipyards, and railyards.
Jib Cranes
Available generally with a lift range of 250 lbs. – 15 tons, these cranes typically mount to the floor (stand-alone) or a structural wall system, eliminating the need for a runway or track system. Providing 180° to 360° of rotation, jib cranes are also ideal for repetitive lifting in a smaller work area. They are available in a variety of spans, capacities, and heights.
Freestanding Jib Cranes
- Capacity generally up to 15 tons
- Floor-mounted installation
- Under boom height: 8’ to 30’
- Spans: 8’ to 30’
- 360-degree rotation
Mast Jib Crane
- Capacity generally up to 5 tons
- Requires both floor and structural overhead connections
- Under boom height: 8’ to 30’
- Spans: 8’ to 30’
- 360-degree rotation
Wall-Mounted Jib Crane
- Capacity generally up to 5 tons
- Spans 30’-40’
- 180-degree rotation
Available in a variety of sizes and load capacities, jib cranes are ideal for individual workstations around the facility or work area.
Choosing the Best Overhead Crane for Tight Spaces
While this article covers the various crane options and their benefits, several other factors should be considered before making a final decision.
- Building structure
- Crane capacity
- Hoist capacity
- Span
- Hook height
- Usage
- Operating conditions
Once you have assembled your building information and lift requirements, you can call us directly at 1-800-713-0103 or email the Hi-Speed Overhead Crane Experts to discuss your physical location and crane needs in greater detail.
Related Articles and Information
Due to your interest in overhead crane options, here are some other articles you might find helpful.
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