U.S. Department of Labor Occupational Safety & Health Administration www.osha.gov  [skip navigational links] Search   Advanced Search | A-Z Index

Saws Presses Plastics Machinery        Mechanical Power Presses Presses >> - Mechanical Full Revolution Part Revolution - Hydraulic - Pneumatic - Hydra-mechanical - Mechanical-Friction Clutch - Powered Press Brakes - Definitions Full Revolution Clutch as defined by OSHA, [29 CFR 1910.211(d)(5)], is a type of clutch that, when tripped, cannot be disengaged until the crankshaft has almost completed a full revolution and the press slide a full stroke.  This type of press was designed to make one full machine stroke or crankshaft revolution after each engagement of the mechanical pin, collar, or rolling key.  Operator Involvement   The worker will activate the machine through a foot switch or palm buttons. Once this is done the press will perform a full stroke, barring any mechanical failures, before stopping at top dead center (TDC).  This inability to stop the machine stroke poses a hazard to the operator and other workers.    Full revolution clutch press with safeguards Hazards: View accident report The biggest hazard when working with either full or part revolution mechanical power presses is the point of operation. A hand or any body part in this area can result in crushed or severed limbs or even fatalities.   Solutions: The following are OSHA and ANSI recognized methods for safeguarding the point of operation on full revolution clutch mechanical power presses: Barrier Guard Two-Hand Trip Pullback Restraint Type "A" and "B" Gates     Saws | Presses | Plastics Machinery eTool Home | Additional References | User Guide | Credits

Back to Topwww.osha.gov		www.dol.gov
Contact Us | Freedom of Information Act | Customer Survey Privacy and Security Statement | Disclaimers
Occupational Safety & Health Administration 200 Constitution Avenue, NW Washington, DC 20210