{"product_id":"harken-57-mm-zircon-block-with-becket","title":"Harken 57 mm Zircon Block with Becket","description":"\u003c!-- harken-official:v2 Sku:2196 page_sha256:8d92d686fbfbddd9712b14e461ba37a4b666f74b09ec20f62249a2eec66c2a51 --\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;\"\u003e450 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;\"\u003e990 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 3\/4 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;\"\u003e95 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;\"\u003e3\/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;\"\u003eMaximum line Ø (mm)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e10 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;\"\u003e150 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;\"\u003e330 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;\"\u003e2 1\/4 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;\"\u003e57 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;\"\u003e51.4 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;\"\u003e1.81 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=db174ebfdea102412820a70127e3732f061d0fffd453fa6aceac88406bc5b263 --\u003e\u003ch3\u003eFAQs\u003c\/h3\u003e\u003cdetails\u003e\u003csummary\u003eAre there any general safety, maintenance, or warranty notes provided?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFor additional safety, maintenance, and warranty information, it is recommended to refer to official manuals or catalogs.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow should the block be cleaned for maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eClean block and attachments frequently with detergent and fresh water, rotating the sheave to distribute water.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat should be inspected for maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eInspect and replace worn, UV damaged, or compromised splices on lashings and attachment loops.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs there a caution regarding installing a separate system on the becket?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eDo not add a fully loaded separate system to the becket.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow should the Zircon block with becket be mounted?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eUse lashing or loops secured to the head of the block. Lash only through both cheeks so the lashing holds the block together, not split apart.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the correct way to add a block to the becket?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eThe load on the added block should not exceed 1\/3 the load of the upper block.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat material are the sheave and sideplates made of?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eThey are constructed from strong and reliable fiber reinforced composite material.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow should I flush the block during cleaning?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFlush with fresh water while rotating the parts to distribute, especially through the sheave, bearings, and sideplates.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow should the head be attached?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eUse lashing or loops secured to the head of the block for attachment.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre there important lashing instructions for the block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eLash only through both cheeks so the lashing holds the block together, not split apart.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat happens if the lashing is in line with the seam?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eIf the lashing or soft attachment is in line with the seam, it can split the block apart and cause it to fail.\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\": \"Are there any general safety, maintenance, or warranty notes provided?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"For additional safety, maintenance, and warranty information, it is recommended to refer to official manuals or catalogs.\"}}, {\"@type\": \"Question\", \"name\": \"How should the block be cleaned for maintenance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Clean block and attachments frequently with detergent and fresh water, rotating the sheave to distribute water.\"}}, {\"@type\": \"Question\", \"name\": \"What should be inspected for maintenance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Inspect and replace worn, UV damaged, or compromised splices on lashings and attachment loops.\"}}, {\"@type\": \"Question\", \"name\": \"Is there a caution regarding installing a separate system on the becket?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Do not add a fully loaded separate system to the becket.\"}}, {\"@type\": \"Question\", \"name\": \"How should the Zircon block with becket be mounted?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use lashing or loops secured to the head of the block. Lash only through both cheeks so the lashing holds the block together, not split apart.\"}}, {\"@type\": \"Question\", \"name\": \"What is the correct way to add a block to the becket?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The load on the added block should not exceed 1\/3 the load of the upper block.\"}}, {\"@type\": \"Question\", \"name\": \"What material are the sheave and sideplates made of?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"They are constructed from strong and reliable fiber reinforced composite material.\"}}, {\"@type\": \"Question\", \"name\": \"How should I flush the block during cleaning?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Flush with fresh water while rotating the parts to distribute, especially through the sheave, bearings, and sideplates.\"}}, {\"@type\": \"Question\", \"name\": \"How should the head be attached?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use lashing or loops secured to the head of the block for attachment.\"}}, {\"@type\": \"Question\", \"name\": \"Are there important lashing instructions for the block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Lash only through both cheeks so the lashing holds the block together, not split apart.\"}}, {\"@type\": \"Question\", \"name\": \"What happens if the lashing is in line with the seam?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"If the lashing or soft attachment is in line with the seam, it can split the block apart and cause it to fail.\"}}]}\u003c\/script\u003e\u003c!-- \/sr-faq --\u003e\u003c!-- \/harken-official --\u003e","brand":"Harken","offers":[{"title":"Single","offer_id":53250991292753,"sku":"2196","price":1355.0,"currency_code":"ZAR","in_stock":true},{"title":"Double","offer_id":53250991325521,"sku":"2198","price":2729.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4434\/4913\/files\/a87895b2-d8ac-49ba-94f2-a6ee977537fe_a0d74542-ffb3-429b-9d8a-b22be9002f6b.jpg?v=1773130258","url":"https:\/\/www.sailrace.com\/en-za\/products\/harken-57-mm-zircon-block-with-becket","provider":"SailRACE","version":"1.0","type":"link"}