{"id":42173,"date":"2022-01-03T18:38:15","date_gmt":"2022-01-03T17:38:15","guid":{"rendered":"https:\/\/www.trioptics.fr\/?post_type=product&#038;p=42173"},"modified":"2025-09-05T15:50:34","modified_gmt":"2025-09-05T13:50:34","slug":"ring-stack-r-ra-series-piezoelectric-actuators","status":"publish","type":"product","link":"https:\/\/www.trioptics.fr\/en\/product\/ring-stack-r-ra-series-piezoelectric-actuators\/","title":{"rendered":"Ring stack (R\/RA series) piezoelectric actuators"},"content":{"rendered":"<p><span data-contrast=\"auto\">Piezoelectric ring actuators consist of a large number of ceramic discs in contact. Compared with the tube actuator, the ring actuator achieves higher rigidity and the expansion is twice as high.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The ring actuator is available with housing (RA series) and without housing (R series). The actuator without housing is only connected to the ceramic top and ground plate. The actuator with housing is fixed with screws on the borehole. Ring actuators without housing can only be used in dynamic applications with additional preload.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Ring actuators of the RA series are available on request with a strain gauge feedback sensor.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Please ask for a top plate to screw for easy mounting of the mirrors.<\/span><span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<div class=\"ctadiv\"><a class=\"cta\" href=\"https:\/\/www.trioptics.fr\/en\/contact\/\">Contact us for a quote<\/a><\/div>\n<div class=\"tlchgmt\">\n<p class=\"titdoc\"><span class=\"tittel\">Download data sheet<\/span><\/p>\n<p><a class=\"doctel\" href=\"https:\/\/www.trioptics.fr\/wp-content\/uploads\/produits\/fichiers\/r-ra-datasheet.pdf\" target=\"_blank\" rel=\"noopener\">Data sheet <span class=\"nomtel\">r-ra-datasheet.pdf<\/span><\/a><\/p>\n<\/div>\n<div class=\"video\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Piezoelectric ring actuators consist of a large number of ceramic discs in contact. Compared with the tube actuator, the ring actuator achieves higher rigidity and the<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"featured_media":36861,"template":"","meta":{"rs_blank_template":"","rs_page_bg_color":"","slide_template_v7":""},"product_brand":[],"product_cat":[1674],"product_tag":[],"class_list":{"0":"post-42173","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-piezo-stack","8":"first","9":"instock","10":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ring stack (R\/RA series) piezoelectric actuators<\/title>\n<meta name=\"description\" content=\"TRIOPTICS distributes high-precision optical equipment for industry and research, including Ring stack (R\/RA series) piezoelectric actuators. 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