{"product_id":"harken-40-mm-zircon-triple-block-with-bkt","title":"Harken 40 mm Zircon Triple Block with BKT","description":"\u003c!-- harken-official:v2 Sku:1212 page_sha256:c2b29abcb34d0742170e8a45dcdd468ef8c30c30148d5a51dbbb923e690aaaa7 --\u003e\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eZircon blocks help trimmers match sail shapes to new conditions immediately. At the core of the Zircon performance are industrial ceramic ball bearings mounted inside caged races. The cages keep these bearings separated so they don’t bunch, touch, and stop each other. The result is the most efficient small boat block Harken has ever made. Zircon blocks are available in 40- and 57-mm sheaves in single and double blocks, with or without beckets.\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;\"\u003e1020 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;\"\u003e2250 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;\"\u003e2 7\/8 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;\"\u003e73 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;\"\u003e5\/16 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;\"\u003e8 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;\"\u003e345 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;\"\u003e750 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 9\/16 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;\"\u003e40 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;\"\u003e70 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;\"\u003e2.47 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=591d0adcf345534ba3f9e60076d390e3f310491ef13b0f1d3bc49c69a8658f1a --\u003e\u003ch3\u003eFAQs\u003c\/h3\u003e\u003cdetails\u003e\u003csummary\u003eWhere can I find more information about safety and warranty?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFor additional safety, maintenance, and warranty information consult the appropriate Harken catalog or manual.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat cleaning products should be used for maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eUse detergent and fresh water to clean the block and attachments.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow should the block be attached during installation?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eUse lashing or loops secured to the head of the block, ensuring the lashing goes through both cheeks for secure holding.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre there important installation cautions for lashing?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYes, lash only through both cheeks so the lashing is holding the block together, not split apart. Incorrect lashing can cause failure.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat should be inspected for wear or damage during maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eInspect and replace worn, UV damaged, or compromised splices on lashings and attachment loops regularly.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre there precautions when adding an extra block to the becket?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eAny additional block should not bear more than 1\/3 the load of the upper block. Do not use a fully loaded separate system.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat feature improves the block's efficiency?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eComposite sheaves are insert-molded with low friction ceramic bearings mounted inside caged races.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan a full-load separate system be used with the becket?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo, do not add a fully loaded separate system to the becket block.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the construction material of the sheave and sideplates?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eThey are made from strong and reliable fiber reinforced composite construction.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat materials are used in the core construction of Zircon blocks?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eThe Zircon block features composite sheaves insert-molded with low friction ceramic bearings and has fiber reinforced composite construction for the sheave and sideplates.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the correct method for lashing the block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eEnsure the lashing goes through both cheeks, not in line with the seam. Lashing along the seam can split the block apart and cause failure.\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\": \"Where can I find more information about safety and warranty?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"For additional safety, maintenance, and warranty information consult the appropriate Harken catalog or manual.\"}}, {\"@type\": \"Question\", \"name\": \"What cleaning products should be used for maintenance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use detergent and fresh water to clean the block and attachments.\"}}, {\"@type\": \"Question\", \"name\": \"How should the block be attached during installation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use lashing or loops secured to the head of the block, ensuring the lashing goes through both cheeks for secure holding.\"}}, {\"@type\": \"Question\", \"name\": \"Are there important installation cautions for lashing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, lash only through both cheeks so the lashing is holding the block together, not split apart. 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Do not use a fully loaded separate system.\"}}, {\"@type\": \"Question\", \"name\": \"What feature improves the block's efficiency?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Composite sheaves are insert-molded with low friction ceramic bearings mounted inside caged races.\"}}, {\"@type\": \"Question\", \"name\": \"Can a full-load separate system be used with the becket?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No, do not add a fully loaded separate system to the becket block.\"}}, {\"@type\": \"Question\", \"name\": \"What is the construction material of the sheave and sideplates?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"They are made from strong and reliable fiber reinforced composite construction.\"}}, {\"@type\": \"Question\", \"name\": \"What materials are used in the core construction of Zircon blocks?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The Zircon block features composite sheaves insert-molded with low friction ceramic bearings and has fiber reinforced composite construction for the sheave and sideplates.\"}}, {\"@type\": \"Question\", \"name\": \"What is the correct method for lashing the block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Ensure the lashing goes through both cheeks, not in line with the seam. Lashing along the seam can split the block apart and cause failure.\"}}]}\u003c\/script\u003e\u003c!-- \/sr-faq --\u003e\u003c!-- \/harken-official --\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":53195890655569,"sku":"1212","price":12600.0,"currency_code":"AFN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4434\/4913\/files\/1e49e1bb-2d48-4546-9f15-098a60a698f1_63da8d5f-e6f6-44be-9b4b-5bb4bba4b334.jpg?v=1772621725","url":"https:\/\/www.sailrace.com\/en-centralasia\/products\/harken-40-mm-zircon-triple-block-with-bkt","provider":"SailRACE","version":"1.0","type":"link"}