{"id":1190,"date":"2026-09-09T08:48:11","date_gmt":"2026-09-09T08:48:11","guid":{"rendered":"https:\/\/haojubolt.com\/?post_type=product&#038;p=1190"},"modified":"2026-09-09T08:48:11","modified_gmt":"2026-09-09T08:48:11","slug":"esd-series-single-stage-hydraulic-bolt-tensioner","status":"publish","type":"product","link":"https:\/\/haojubolt.com\/index.php\/product\/esd-series-single-stage-hydraulic-bolt-tensioner\/","title":{"rendered":"ESD Series Single-Stage Hydraulic Bolt Tensioner"},"content":{"rendered":"<p>Product Features<br \/>\nPrimarily designed for 10.9-grade high-strength bolts.<br \/>\nMaximum working pressure: 150 MPa (1,500 bar).<br \/>\nEquipped with an automatic rapid-return mechanism for faster piston retraction after each tensioning cycle.<br \/>\nFeatures a red stroke indicator line to provide a clear visual warning when the piston approaches or exceeds its allowable stroke.<br \/>\nEquipped with an interchangeable tensioning head, allowing adaptation to different bolt sizes and applications.<br \/>\nStandard surface treatment includes polishing and black oxide coating for improved corrosion and wear resistance.<br \/>\nSupplied with a safety protective cover to improve operator protection during high-pressure tensioning operations.<br \/>\nOptional Features<br \/>\nNickel-plated coating for enhanced corrosion protection.<br \/>\n360\u00b0 swivel hydraulic coupling for flexible hose positioning and easier operation in restricted spaces.<br \/>\nOptional gear-driven nut rotation socket for hex nuts, allowing fast and convenient nut run-down during tensioning operations.<br \/>\nOptional bolt elongation measuring rod for monitoring bolt extension during the tensioning process.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Product Features Primarily designed for 10.9-grade high [&hellip;]<\/p>\n","protected":false},"featured_media":474,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[17],"product_tag":[],"class_list":["post-1190","product","type-product","status-publish","has-post-thumbnail","product_cat-hydraulic-bolt-tensioners","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/haojubolt.com\/index.php\/wp-json\/wp\/v2\/product\/1190","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/haojubolt.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/haojubolt.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/haojubolt.com\/index.php\/wp-json\/wp\/v2\/comments?post=1190"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/haojubolt.com\/index.php\/wp-json\/wp\/v2\/media\/474"}],"wp:attachment":[{"href":"https:\/\/haojubolt.com\/index.php\/wp-json\/wp\/v2\/media?parent=1190"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/haojubolt.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=1190"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/haojubolt.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=1190"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/haojubolt.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=1190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}