EMH’s free standing cranes, the NOMAD® Free Standing Crane System is an ideal solution for when a standard overhead crane is impossible or impractical. These free standing cranes are also good for temporary crane installation. With a name like NOMAD, you know that EMH’s free standing cranes are designed with flexibility in mind as you can move them from spot to spot or site to site.
These free standing cranes are also an excellent solution for pre-cast concrete buildings as all connections are bolted rather than welded. leasing your building? The NOMAD free standing crane can be moved from your temporary home to a more permanent locale. The NOMAD® free standing cranes also feature low headroom design to maximize lift when headroom is at a premium.
Key features and benefits of NOMAD® systems:
- Capacities from 2 to 10 tons
- Low headroom design
- Easily relocated
- Great for buildings not originally designed for cranes
Each NOMAD® Free Standing Crane System includes:
- Steel freestanding structure
- Standard hand-held radio control
- Inverter controlled hoist trolley and bridge with end trucks
- Runway in lengths from 20 to 120 feet
- Runway electrification
- Standard spans of 20, 30 and 40 feet
- Instructions for bridge construction and crane assembly, plus Maintenance Manual
Modular NOMAD® Free Standing Bridge Crane Cells are available in runway lengths of 20, 25 and 30 feet.
Multiple cells can be combined for long runways; existing systems can be retrofitted with additional cells.
A mechanical load brake provides your crane hoist with the ability to manage/control the lowering speed of the crane hoist load. The load brake should also be able to hold the load on its own.
The basic principle of a crane hoist’s mechanical load brake is the mechanical conversion (into heat, through friction) of the kinetic energy produced by the descent of the load. Heat is dissipated from the friction surfaces to the oil in the gear case and then to the atmosphere. A crane hoist’s mechanical load brake typically requires a power source (hoist motor) to lower a load, as it is needed to counteract the working against friction.
Today’s crane hoists typically do not control the rate of acceleration of a descending load without a control brake.
A Better Alternative
The most cost effective and reliable crane hoist design for affordability in bot the short and long run is a “non-load brake” crane hoist. These crane hoists of the non-load brake variety have standard two-speed hoisting for increased positioning accuracy and safety rather than the standard single speed hoisting on traditional load brake hoists. Non-load brake, two- speed hoists are the proven industry standard in the western world. For stepless speed control and increased positioning accuracy, a variable frequency drive equipped, non-load brake hoist is the modern preferred alternative.
These crane hoists can add an extra level of safety by mounting a second holding brake on the gear case. This second crane hoist brake will provide redundancy in the event of a motor brake failure or motor coupling failure. Being externally mounted, the brake can be easily maintained and inspected. Without a load brake, the gear train runs quieter, cooler and free of contamination resulting in extended life and increased reliability.
In critical applications, a brake mounted directly on the drum is available. This brake provides redundancy to the holding brake and can also be fitted with over-speed detection. This type of brake is designed to hold a load in the event of a failure anywhere in the drive train. Naturally, this option requires a higher initial investment.
One great thing about aluminum cranes is their strength in relation to their relative light weight. Aluminum cranes are easier to ship to you and aluminum cranes are easier to move within the same site or from site to site.
EMH’s aluminum cranes are a leader in the aluminum crane category. The EMH AL SYSTEMS™ Aluminum Crane Rail System can safely, efficiently and economically transport all sizes of leads including those as light as 35 lbs.
The aluminum cranes are have a unique T-slot design so as to easily integrate the aluminum crane into a wide variety of lifters and end effectors, and provide an almost unlimited number of configurations.
The precise aluminum crane tolerances of the AL SYSTEMS rail, combined with integrated smooth running trolleys enables manual operation where less advanced systems would require costly motorization.
Our aluminum cranes allow loads to consistently move smoothly – even at the ends of the bridge. EMH AL SYSTEMS™ aluminum cranes components can be used in manual, semi-automatic, and completely automated systems.
When you find yourself in the market for a wire rope hoist/crane hoist there are a lot of things to consider – one of them is the actual classification or capacity.
||Typical Areas of Application
||Infrequent or Standby Wire Rope Hoist Use
||These wire rope hoists are used for powerhouses and utilities that require infrequent handling. In this application, the wire rope hoists are used primarily to install and service heavy equipment.
||Light Wire Rope Hoist Use
||Wire rope hoists with this classification are ideal in light machine shops and in fabricating industries and service and maintenance work, where loads and utilization of the wire rope hoists are random and do not exceed 15% of the working hours.
||Standard Wire Rope Hoist Use
Wire rope hoists for general machine shops where the hoists are needed for no more than a quarter (25%) of the working hours. These are for general machine shops, fabricating, assembly, storage, and warehousing.
||Heavy Wire Rope Hoist Use
||Wire rope hoists for high volume handling. This includes wire rope hoist needs in steel warehouses, machine shops, fabricating plants, mills and bundries. Total running time for these wire rope hoists are typically 25-50% of work hours.
||Severe Wire Rope Hoist Use
||Wire rope hoists for the handling of material in combination with buckets, magnets, or other heavy attachments. Duty cycles for these wire rope hoists often approaches continuous operation.
EMH has hundreds of options and we are happy to help you choose the wire rope hoist that is right for your needs.
When designing your overhead crane to meet your specific application requirements, one of the most critical decisions you face is in selecting the proper hoist. You will want to find a cost effective solution, but this is not an area to cut corners as the crane hoist/wire rope hoist does the primary work of lifting the load. The crane hoist/wire rope hoist is often the most critical part of an overhead crane.
But picking the right crane hoist or wire rope hoist is not an easy process. Just looking at one manufacturer – us (EMH) – we have hundreds of models of wire rope hoists with varying ratings for a number of wire rope hoist specifications. And when you are looking at the models of wire rope hoists, it could make your head explode as they are long and complex. Here is what the wire rope hoists codes mean.
Capacity, lift distance, and lift speed are apparent even to the novice wire rope hoist buyer. Other specifications for a wire rope hoist are a bit more complex, including…
EMH offers three primary crane hoist/wire rope hoist trolley configurations for overhead cranes and monorails that have a capacity of up to 150 tons.
- The “E”, or monorail trolley type, is used for monorail and single girder cranes up to 10 tons capacity.
- The “D” and “Z” hoist trolleys are used for top running double girder industrial cranes up to 50 tons capacity.
- The “H” type trolleys are designed for special applications requiring CMAA Class “D” and “E” service. EMH offers these trolleys in capacities up to 300 tons.
Typically the higher the model number, the larger, more durable, and more costly the wire rope hoist/crane hoist and its components are.
“E,” “D” and “Z” trolleys have variable frequency trolley drives. All wire rope hoist units have a 6:1 speed ratio while the trolley drives have a 4:1 speed ratio. “H” type hoist trolleys are offered with variable frequency drives on all motions.
Wire Rope Hoist Hoist Duty Service Classification
There are many factors effecting the selection of the hoist unit for a given application. These factors not only determine the life of mechanical components, but also influence the expected life of electro-mechanical components.
When you find yourself in the market for an overhead crane there are a lot of things to consider including the overhead crane classification.
||Typical Areas of Application
||Infrequent or Standby
||Class A overhead cranes are used in environments where infrequent use is all thet is needed like powerhouses, public utilities, turbine rooms, motor rooms and transformer stations. These overhead cranes are also ideal when precise handling of equipment at slow speeds is needed.
||Class B overhead cranes are typically used in environments that include repair shops, light assembly operations, service buildings, light warehousing, etc., where service requirements are light and the speed is low. For these overhead cranes we are talking two to five lifts per hour.
||Class C overhead cranes are built to be used in machine shops or papermill machine rooms, etc. where service requirements are moderate. Class C overhead cranes can handle loads that average 50 percent of the rated capacity with 5 to 10 lifts per hour.
Overhead cranes that are rated D are used in environments that include heavy machine shops, foundries, fabricating plants steel warehouse, container yards, lumber mills, etc. These overhead craned include standard duty bucket and magnet operations where heavy duty production is required. Loads approaching 50 percent of the rated capacity are handled constantly by the overhead crane during the working period.
||Severe, or class E overhead cranes handle loads approaching their capacity rating throughout the life of the overhead crane. These overhead cranes handle twenty or more lifts per hour at or near the rated capacity.
||Class F overhead cranes are capable of handling loads approaching their capacity, continuously, throughout the life of the overhead crane. These overhead cranes must provide the highest reliability with special attention to ease of maintenance features.
EMH has numerous overhead crane options and we are happy to help you choose the crane that is right for your needs.
Jib cranes from EMH include wall-traveling jib cranes as well as aluminum rail jib cranes. This type of crane, the jib crane, a common mounting device for hoists lets you leverage the jib cranes capabilities and flexibility so you’re able to locate the hoist (wire rope hoist, etc.) exactly over the load.
These jib cranes provide innovation that improves productivity. Jib cranes can be provided to you by EMH with a variety of configurations including jib crane options for an abundance of or restricted work space.
Jib cranes from EMH have numerous safety features built in. Because of the way EMH manufactures its jib cranes, we are able to limit unintentional movements, providing better control, greatly reducing any chance of damage.
EMH jib cranes are easy to install, use, and move within your factory. EMH jib cranes and the applications they are used for can evolve with your changing needs – or simply serve as a reliable jib crane for years to come for the purpose you acquire it for.
EMH supplies a wide range of wire rope hoists. We apply our years of expertise in manufacturing single and double girder wire rope hoists for numerous overhead crane applications. EMH’s wire rope hoists have a wide range of standard capacities – from 2 to 50 tons. And EMH’s wire rope hoists provide a price-to-performance ratio that makes them one of the industry’s best options for wire rope hoists.
- EMH’s wire rope hoists include numerous features including:
- Wire rope hoists with two lifting and trolley speeds
- Wire rope hoists with two upper and one lower precision limit switches and overload limit
- Wire rope hoists with heavy duty wear resistant rope guide
- Wire rope hoists with DC rectified brakes
- Wire rope hoists with lifetime lubricated bearings and gear reducers.
Turning to EMH for wire rope hoists brings your organization:
- An extensive selection of Wire Rope Hoists and Wire Rope Hoist Configurations
- Wire Rope Hoists from an Industry Leader
- Rugged, Reliable Wire Rope Hoists
- Large Inventory and Options for Wire Rope Hoists
- Unmatched Wire Rope Hoists Customer Support
Overhead Crane Kits are a great way to save time and money. Crane kits are less costly to manufacture and ship, getting you up and running sooner and for less. System 2000 Crane Kits from EMH make it easy to design, manufacture, and install your crane!
EMH has numerous crane kits to meet multiple needs, including:
System 2000 Crane Kits range in capacity from 2 to 30 tons in single and double girder top running models, and up to 10 tons in single girder under running styles.
EMH Crane Kits include everything but the girder, specifically:
- A Crane Kit Wire Rope Hoist with 20′ of lift.
- Crane Kit End trucks with mounting plates, bolts and bumpers.
- Crane Kit Trolley Tow Arms with pipe clamps.
- Complete Crane Kit trolley and sliding push button Festoon System with all required mounting hardware.
- Crane Kit Bridge Conductor Cables.
- Crane Kit Bridge Control Panel with lockable fused mainline disconnect mainline fuse, mechanical and electrical interlocking contactors and motor protection.
- Crane Kit Trolley End Stops
- Detailed Crane Kit Engineering for bridge construction and crane assembly.
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Overhead crane safety is more complicated than don’t lift a load over someone’s head… but still, don’t do that with your overhead crane.
EMH or any of overhead crane provider should provide you with the resources to train your overhead crane operators – so take advantage of that. Every person on your floor should have at the very least basic overhead crane training.
Overhead crane operators should always know the crane’s capacity and how much each lift attempt is. Training will help everyone on the floor understand what is safe and what is not.
Safety starts when the overhead is installed. We help you determine not just what your overhead crane will be lifting and moving, but also how often your overhead crane will be used and how it should be maintained and supported.
Another safety imperative is to purchase an overhead crane that will be able to safely lift loads for when you grow.
EMH is happy to sit down and discuss how to pick the overhead crane that meets your needs… safely.