OPEN WINCH CRANES
Open winch cranes are made for heavy-duty lifting, with load-bearing capacities of between 9t and 100t depending on how they are set up. The crane is made up of a drum around which a wire or chain is spooled (wound) and it is this unwinding and winding mechanism which does the work of lifting. Ideally, your open winch crane will be floor-based and rather haul than lift, as in terms of operability they have an optimum angle for pulling an object. You need to account for the power of the crane, the weight of the load, the load’s shape and relative centre of gravity etc. More oddly shaped loads my be better suited to wire rope hoist cranes or custom cranes.
The most important aspect of choosing a winch involves probable use. You’ll need to know if you want an automatic or manual winch, and the type of wire or chain to use with it. Always focus on a winch’s line pull weighting, which is the maximum load that the winch can exert on the cable. This works in tandem with a duty cycle factor to decide whether your mechanical hoist is a good choice or not. If the line pull weighting is too low, the winch won’t have the necessary power to lift the load which you want it to bear, whereas, if it’s too high, it may affect hoist speed and consequently, your duty cycle factor. The lower your duty cycle factor, the slower you will be able to lift loads. This is because the duty cycle factor calculates the cycle of operation of your electric or manual winch. Some mechanical cranes have a duty cycle factor of 100% which means they can work continuously but this would depend on your individual operational needs.
LET RGM CRANES HELP YOU FIND AN OPEN WINCH CRANE SOLUTION
RGM Cranes technicians will help you with all aspects of setting up your open winch crane including pre-tensioning the winch wire. What this means is that the wire must be spooled around the winch drum as tightly as possible, where it will then need to be run with a load a few times in order to stretch the cable adequately. This also ensures that the wire spools around the open winch drum correctly. Whether an open winch drum comes pre-spooled or not, it is necessary to stretch out the wire and pretension it.
THE IMPORTANCE OF PROPER INSTALLATION
It is important that you allow for proper installation because open winch cranes require technical systems knowledge and knowledge of ancillary systems like your electrical connections. For instance, your electrical system must be properly connected because with the loads the crane will be lifting, it is possible to overload your circuit as the mechanical hoist will be drawing quite a lot of power. Your operational circuit breakers must be matched to the load-carrying capacity of the wires in your circuit. Other than that, the open winch crane will usually come with PUR U cables which are highly flexible, have a high mechanical strength, and are resistant to most oils and chemicals used in industries. PUR U cables are also highly flame resistant, meaning that your overall occupational health and safety compliance will be higher.
MANUFACTURING & SUPPLYING SOUTHERN AFRICA WITH INDUSTRIAL LIFTING SOLUTIONS FOR OVER 30 YEARS.
CRANE SERVICE INSPECTIONS
Our work is guaranteed and in compliance with local and international standards. Inspections and testing is conducted according to SANS 1037-2006 specifications.
READ MORE ABOUT LOAD TESTING COMPLIANCE & STANDARDS
ON SITE LOAD TESTING & MAINTENANCE
RGM offers onsite equipment testing using our certified mobile lifting equipment. This rig has the capacity to conduct lift testing up to 27 tons on a single pull.
BOOK YOUR ONSITE INSPECTION WITH RGM
LIFTING TACKLE & SERVICING
Our full product range sizes, materials, and construction is stocked to meet any specialized lifting requirement and specification
STOCK SUPPLIED 24/7
FIND OUT HOW WE CAN ASSIST YOU
We are happy to assist you with any query large or small. Reach out to us and we will ensure that you find the best solution to your lifting needs
Monday - Thursday
07:30 - 16:30 (CAT)
07:30 - 14 (CAT)
Cnr Dusseldorf & Ruhr Roads,
PO Box 2638
SUBSCRIBE TO OUR NEWSLETTER
Stay up to date with the latest news and developments by subscribing to our newsletter.