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Restraint keys are a cost effective method of providing axial restraint for clutches and holdbacks . The restraint key is longer than the clutch through bore length or clutch width . The single block key will prevent axial movement in only one direction and must be used with some other means to prevent movement in the other direction such as a set collar or a step in the shaft . The double block key will prevent axial movement of the clutch in either direction . All restraint keys must be secured in the shaft keyseat . This can usually be accomplished by cutting the keyseat with an end mill without breaking out at the end of the shaft .
Formsprag Clutch 23601 Hoover Rd. Warren, MI 48089 - USA Toll Free: 1-800-348-0881 (Press #1)Phone: 586-758-5000Fax: 586-758-5204Email: info@formsprag.com www.formsprag.com
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