{"product_id":"harken-one-ton-twing-block","title":"Harken One Ton Twing Block","description":"\u003c!-- harken-official:v2 Sku:3405 page_sha256:4b48e9ca79028f09d8baabd4a614ca6598dd15380de2583406944fdd06fce035 --\u003e\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThe new Twing block features a spring loaded side opening mechanism for true one-handed rigging, even while wearing sailing gloves. Black anodized aluminum sideplates are edged with robust bumpers to protect the block, topsides, and deck. The sheave is aluminum rolling on a bearing system shared with Harken's existing 2.3T high-load snatch block.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;width:100%;max-width:100%;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eBreaking load (kg)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e2000 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eBreaking load (lb)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e4409 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eLength (in)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eLength (mm)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e78 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eMaximum line Ø (in)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e.43 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eMaximum line Ø (mm)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e11 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eMaximum working load (kg)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e1000 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eMaximum working load (lb)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e2205 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eSheave Ø (in)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e1 1\/2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eSheave Ø (mm)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e38.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eWeight (g)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e143 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003eWeight (oz)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e1.4 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c!-- sr-faq v=1 vendor=harken source_sha256=64139522a692a85befe27c2850ab4db1f0ebdd6134dc540386377aa195c59195 --\u003e\u003ch3\u003eFAQs\u003c\/h3\u003e\u003cdetails\u003e\u003csummary\u003eHow should the sheave be cleaned for proper maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eSpin the sheave to distribute soap solution into sideload balls and main bearing, then flush with fresh water.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow do I install and rig the One Ton Twing Block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eHold the block in one hand and press the release button with your index finger. Place the sheet, close and latch the sideplate, and listen for an audible click.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow should I maintain and clean the twing block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eClean the release button, sheave, and hinge base with mild detergent and water. Do not use lubricants in the sheave.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is a key safety warning during use?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eMake sure the sideplate is latched before loading. Do not load sheave when sideplate is unlatched.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow is the sheave designed for strength and performance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eThe block uses a ULC main bearing for smooth turning under extreme loading and sideload balls for loaded alignment.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I load the anti-capsize bar directly?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eDo not load the anti-capsize bar to secure loaded control line or sheet. Use the thimble and sheave for loaded lines.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan the twing block be used with a soft shackle?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes, it can be used as a snatch block when combined with a soft shackle.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat options are available for up-down control rigging?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFor 1:1 control, splice or knot to the thimble at the pivot base. For 2:1 control, use a control line around the thimble at the pivot base.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs it possible to use larger sheets with this block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eIf the sheet is larger than 8 mm, remove the anti-capsize bar to allow a larger sheet to be used.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the purpose of the anti-capsize bar and can it be removed?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eThe anti-capsize bar keeps the sheave aligned. It can be removed if the up-down control is 1:1 and a spliced eye is used.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I adjust the friction for opening and closing the sideplates?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes, the friction can be adjusted by changing the tension on the adjusting nut. Avoid loosening it excessively.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How should the sheave be cleaned for proper maintenance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Spin the sheave to distribute soap solution into sideload balls and main bearing, then flush with fresh water.\"}}, {\"@type\": \"Question\", \"name\": \"How do I install and rig the One Ton Twing Block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Hold the block in one hand and press the release button with your index finger. Place the sheet, close and latch the sideplate, and listen for an audible click.\"}}, {\"@type\": \"Question\", \"name\": \"How should I maintain and clean the twing block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Clean the release button, sheave, and hinge base with mild detergent and water. Do not use lubricants in the sheave.\"}}, {\"@type\": \"Question\", \"name\": \"What is a key safety warning during use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Make sure the sideplate is latched before loading. Do not load sheave when sideplate is unlatched.\"}}, {\"@type\": \"Question\", \"name\": \"How is the sheave designed for strength and performance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The block uses a ULC main bearing for smooth turning under extreme loading and sideload balls for loaded alignment.\"}}, {\"@type\": \"Question\", \"name\": \"Can I load the anti-capsize bar directly?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Do not load the anti-capsize bar to secure loaded control line or sheet. Use the thimble and sheave for loaded lines.\"}}, {\"@type\": \"Question\", \"name\": \"Can the twing block be used with a soft shackle?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, it can be used as a snatch block when combined with a soft shackle.\"}}, {\"@type\": \"Question\", \"name\": \"What options are available for up-down control rigging?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"For 1:1 control, splice or knot to the thimble at the pivot base. For 2:1 control, use a control line around the thimble at the pivot base.\"}}, {\"@type\": \"Question\", \"name\": \"Is it possible to use larger sheets with this block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"If the sheet is larger than 8 mm, remove the anti-capsize bar to allow a larger sheet to be used.\"}}, {\"@type\": \"Question\", \"name\": \"What is the purpose of the anti-capsize bar and can it be removed?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The anti-capsize bar keeps the sheave aligned. It can be removed if the up-down control is 1:1 and a spliced eye is used.\"}}, {\"@type\": \"Question\", \"name\": \"Can I adjust the friction for opening and closing the sideplates?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, the friction can be adjusted by changing the tension on the adjusting nut. Avoid loosening it excessively.\"}}]}\u003c\/script\u003e\u003c!-- \/sr-faq --\u003e\u003c!-- \/harken-official --\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":53195994562897,"sku":"3405","price":328.42,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4434\/4913\/files\/832bd332-296a-4bf0-97e2-4ed6be39dfd8.jpg?v=1772623152","url":"https:\/\/www.sailrace.com\/fr\/products\/harken-one-ton-twing-block","provider":"SailRACE","version":"1.0","type":"link"}