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Properly maintained safety chucks include some mechanism for automatic closing and subsequently locking unwind or rewind center shafts. However, you can greatly decrease maintenance of your safety chucks simply by ensuring machine operators manually close them prior to the start of your machine. In other words, the automatic shaft locking feature of safety chucks is really only supposed to be a failsafe mechanism if the machine operator mistakenly does not close the safety chuck manually. In no case should an operation use the automatic locking feature of safety chucks to actuate the capture plate and lock unwind and rewind shafts as a normal case of machine operation.
Most safety chucks are available with pneumatically actuated capture plates to assist in manually closing the chucks. And most safety chucks are also available with proximity sensors to sense when capture plates are open and closed, allowing control logic and electronic indicators to help ensure capture plates are closed prior to machine start.
**DISCLAIMER - A great deal of time has been invested in the development of our weekly tech tips. To the best of our knowledge, they are accurate. It is up to the user to verify all results.|
THE AUTHOR ASSUMES NO LIABILITY CONNECTED WITH THE USE OF THIS INFORMATION OR THE RESULTS OBTAINED FROM IT.
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What is Web Handling?|
Web Handling is the science, engineering and equipment necessary to successfully transport a continuous flexible material through various processes without defect. Enhancing Web Handling with proper equipment will ensure materials are processed at their maximum efficiency, allowing the process to generate maximum profits.
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