{"product_id":"harken-50t-carbon-loop-v-block","title":"Harken 5.0T Carbon Loop V Block","description":"\u003c!-- harken-official:v2 Sku:3296 page_sha256:d826875ba1e41ada4686ddb5041f1e93e8f3468ecc1198a6e1f59c39180cd059 --\u003e\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThe V block delivers another breakthrough in Harken’s loop block series for Grand-Prix racers. Harken engineers have simplified the mechanics by combining the axial and thrust bearings into a single bearing set of V-shaped titanium rollers. The result is a strong, lightweight block that offers unmatched efficiency at high loads, while spinning freely at low loads for smooth easing in light air. Harken V blocks are standard with 3D-molded carbon sideplates, titanium sheave, and captive titanium roller bearings. V blocks are easy to disassemble for inspection and maintenance.\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;\"\u003e10000 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;\"\u003e22000 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 5\/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;\"\u003eLength (mm)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e84 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;\"\u003e1\/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;\"\u003eMaximum line Ø (mm)\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #eee;padding:8px;vertical-align:top;\"\u003e13 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;\"\u003e5000 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;\"\u003e11000 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 7\/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;\"\u003e62 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;\"\u003e179 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;\"\u003e6.31 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=c19dcd6e76940015f14bd4b15ca1c74edcf157a0c404dacb47300ef871d52d8d --\u003e\u003ch3\u003eFAQs\u003c\/h3\u003e\u003cdetails\u003e\u003csummary\u003eHow should the maximum working load be considered during installation?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eMount only in applications where the load does not exceed the product’s Maximum Working Load, and anchor to structures equal or greater than that load.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow often should long-term maintenance be performed?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eOverhaul and clean at least twice a year. Frequency may increase after a heavy air regatta or passage, or before long-term storage.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat are the disassembly guidelines for inspection and maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eRefer to product drawings or consult Harken custom engineering to understand how to disassemble, inspect, and clean all components.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhen should roller bearings be replaced during maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eRoller bearings should be replaced if their surfaces are rough, scored, or have flat spots.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat safety warnings should be observed during installation or use?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eStrictly follow all instructions to avoid hazards. Ensure all people and objects are clear of moving components before use.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho should install or service this V block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eInstallation, disassembling, and reassembling must be performed by expert personnel with appropriate training.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow should the block be cleaned for short-term maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFrequently flush with fresh water, use mild detergent solution, and spin the sheave to distribute and remove debris.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow often is long-term maintenance recommended for this block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eOverhaul and clean at least twice a year and keep a log to determine your specific schedule.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat tools are needed to disassemble the V Block for maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFor V Block maintenance, you need a metric hex key, soapy water solution, solvent to clean grease, and 222 Purple Loctite adhesive.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat should be done if parts turn roughly or make grinding sounds?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003ePerform long-term maintenance immediately if the sheave turns roughly or there is a grinding sound, especially metal on metal.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat should be used to seal mounting holes against water?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eChoose a sealant for fastener holes that effectively prevents water ingress during mounting.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat materials considerations are there for mounting hardware?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eCarefully choose fasteners made from A4 (316) stainless steel and isolate dissimilar metals to prevent galvanic corrosion when mounting.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat are key considerations for mounting hardware to avoid corrosion?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eUse Tef-Gel between dissimilar metals or fasteners and carefully choose fastener materials to avoid galvanic corrosion.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow should fasteners be selected and installed?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eChoose A4 (316) stainless steel fasteners, use large washers\/backing plates, and secure with thread-locking solution as needed.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow can block drainage be checked or maintained?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eEnsure that holes and drainage channels are unobstructed so water does not collect inside the assembly.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow should the block be mounted for proper load alignment?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eMount so loads align correctly with fasteners and padeyes; incorrect alignment can reduce strength or cause failure.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is required for short-term inspection and cleaning?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFrequently flush with fresh water and clean with mild detergent. Inspect all fasteners and parts, tighten and replace as directed.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat caution is required when handling the bearing cage during disassembly?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eDo not force the split bearing cage during disassembly or it can break. Use the cutout and split to disassemble and reassemble the sheave and bearing.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat actions should be taken if corrosion develops around fasteners?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eRemove fasteners, inspect, and if needed remount hardware, carefully isolating with anti-corrosion compound; replace if corrosion persists.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the V Block use sideload balls in its bearing design?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo, V-Blocks do not use sideload balls, so there is no need to catch balls during disassembly.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat should be avoided when greasing or lubricating the block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eDo not grease product unless specified. Using grease can cause bearings to skid instead of roll, causing wear. Follow manual instructions for lubrication.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat should be done if the sheave is turning roughly or there are grinding sounds?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eOverhaul the block immediately if parts are turning or traveling roughly, or if there is a grinding or metal-on-metal sound.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eShould grease be used on V Block bearings?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eDo not grease bearings unless specified; improper greasing can cause wear due to skidding instead of rolling.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat should be done before long-term storage?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003ePerform long-term cleaning, overhaul the block, and store in a dry location without saltwater inside.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat should be inspected for signs of operational problems?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eCheck for increased friction, scraping, or metal sounds. Do not use if these occur until the cause is determined.\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 maximum working load be considered during installation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Mount only in applications where the load does not exceed the product’s Maximum Working Load, and anchor to structures equal or greater than that load.\"}}, {\"@type\": \"Question\", \"name\": \"How often should long-term maintenance be performed?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Overhaul and clean at least twice a year. 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Ensure all people and objects are clear of moving components before use.\"}}, {\"@type\": \"Question\", \"name\": \"Who should install or service this V block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Installation, disassembling, and reassembling must be performed by expert personnel with appropriate training.\"}}, {\"@type\": \"Question\", \"name\": \"How should the block be cleaned for short-term maintenance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Frequently flush with fresh water, use mild detergent solution, and spin the sheave to distribute and remove debris.\"}}, {\"@type\": \"Question\", \"name\": \"How often is long-term maintenance recommended for this block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Overhaul and clean at least twice a year and keep a log to determine your specific schedule.\"}}, {\"@type\": \"Question\", \"name\": \"What tools are needed to disassemble the V Block for maintenance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"For V Block maintenance, you need a metric hex key, soapy water solution, solvent to clean grease, and 222 Purple Loctite adhesive.\"}}, {\"@type\": \"Question\", \"name\": \"What should be done if parts turn roughly or make grinding sounds?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Perform long-term maintenance immediately if the sheave turns roughly or there is a grinding sound, especially metal on metal.\"}}, {\"@type\": \"Question\", \"name\": \"What should be used to seal mounting holes against water?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Choose a sealant for fastener holes that effectively prevents water ingress during mounting.\"}}, {\"@type\": \"Question\", \"name\": \"What materials considerations are there for mounting hardware?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Carefully choose fasteners made from A4 (316) stainless steel and isolate dissimilar metals to prevent galvanic corrosion when mounting.\"}}, {\"@type\": \"Question\", \"name\": \"What are key considerations for mounting hardware to avoid corrosion?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use Tef-Gel between dissimilar metals or fasteners and carefully choose fastener materials to avoid galvanic corrosion.\"}}, {\"@type\": \"Question\", \"name\": \"How should fasteners be selected and installed?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Choose A4 (316) stainless steel fasteners, use large washers\/backing plates, and secure with thread-locking solution as needed.\"}}, {\"@type\": \"Question\", \"name\": \"How can block drainage be checked or maintained?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Ensure that holes and drainage channels are unobstructed so water does not collect inside the assembly.\"}}, {\"@type\": \"Question\", \"name\": \"How should the block be mounted for proper load alignment?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Mount so loads align correctly with fasteners and padeyes; incorrect alignment can reduce strength or cause failure.\"}}, {\"@type\": \"Question\", \"name\": \"What is required for short-term inspection and cleaning?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Frequently flush with fresh water and clean with mild detergent. 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Use the cutout and split to disassemble and reassemble the sheave and bearing.\"}}, {\"@type\": \"Question\", \"name\": \"What actions should be taken if corrosion develops around fasteners?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Remove fasteners, inspect, and if needed remount hardware, carefully isolating with anti-corrosion compound; replace if corrosion persists.\"}}, {\"@type\": \"Question\", \"name\": \"Does the V Block use sideload balls in its bearing design?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No, V-Blocks do not use sideload balls, so there is no need to catch balls during disassembly.\"}}, {\"@type\": \"Question\", \"name\": \"What should be avoided when greasing or lubricating the block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Do not grease product unless specified. Using grease can cause bearings to skid instead of roll, causing wear. Follow manual instructions for lubrication.\"}}, {\"@type\": \"Question\", \"name\": \"What should be done if the sheave is turning roughly or there are grinding sounds?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Overhaul the block immediately if parts are turning or traveling roughly, or if there is a grinding or metal-on-metal sound.\"}}, {\"@type\": \"Question\", \"name\": \"Should grease be used on V Block bearings?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Do not grease bearings unless specified; improper greasing can cause wear due to skidding instead of rolling.\"}}, {\"@type\": \"Question\", \"name\": \"What should be done before long-term storage?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Perform long-term cleaning, overhaul the block, and store in a dry location without saltwater inside.\"}}, {\"@type\": \"Question\", \"name\": \"What should be inspected for signs of operational problems?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Check for increased friction, scraping, or metal sounds. Do not use if these occur until the cause is determined.\"}}]}\u003c\/script\u003e\u003c!-- \/sr-faq --\u003e\u003c!-- \/harken-official --\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":53195988238673,"sku":"3296","price":2631.62,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4434\/4913\/files\/f56fdc26-40a4-44e4-9bea-59f3ca00ce64.jpg?v=1772622951","url":"https:\/\/www.sailrace.com\/nl\/products\/harken-50t-carbon-loop-v-block","provider":"SailRACE","version":"1.0","type":"link"}