{"product_id":"harken-30t-carbon-loop-v-block","title":"Harken 3.0T Carbon Loop V Block","description":"\u003c!-- harken-official:v2 Sku:3295 page_sha256:1ddbc386b130e9e0d4a8bba8987e2b07461a8284437d3e5a1db076fe7f21ac2a --\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;\"\u003e6000 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;\"\u003e13200 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;\"\u003e77 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;\"\u003e7\/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;\"\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;\"\u003e3000 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;\"\u003e6600 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 3\/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;\"\u003e56 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;\"\u003e113 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;\"\u003e3.99 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=7718c8f2a56704fe7132f44dbbfb53f5538f151f2daa7e966613c6d21002adfd --\u003e\u003ch3\u003eFAQs\u003c\/h3\u003e\u003cdetails\u003e\u003csummary\u003eAre there specific tools required for V Block long-term maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eYou should use a metric hex key, soapy water solution, and solvent for cleaning grease. Harken winch grease and 222 Purple Loctite® adhesive are also specified.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eShould V Blocks be greased during maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eDo not grease the product unless specified, as this can cause bearing skidding and wear. Only specific bearings may require grease—follow instructions closely.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat tools are required for long-term V Block inspection and maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eA metric hex key, soapy water, solvent for grease, Harken winch grease, and 222 Purple Loctite adhesive are needed.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat are the loading requirements for installing the V Block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eMount only where load does not exceed Maximum Working Load; structures and anchors must also meet or exceed this load rating.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre there application or environmental limitations for V Blocks?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eHarken custom products are designed for use in a marine saltwater environment provided regular maintenance is followed.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat should you inspect during short-term maintenance of V Blocks?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eInspect all components for wear, corrosion, or damage. Ensure free movement and check for unusual friction or noise. Replace weak or worn parts immediately.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat are the consequences of improper maintenance or operation?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eLack of adequate maintenance shortens product life; don't use if there is increased friction or a scraping sound—resolve issues before use.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow often should long-term maintenance be performed on the V Block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eOverhaul and clean at least twice a year or after heavy use, keeping a maintenance log as recommended.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the correct procedure for cleaning V Block bearings during maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eUse soap and water to clean parts; rinse with fresh water. Avoid grease unless specified, and see manual for greasing instructions.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eShould you use grease during maintenance of V Blocks?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eOnly use grease if specified; using grease in non-specified areas can cause bearing wear due to skidding.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow should V Block fasteners be secured after maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eSecure fasteners using blue or purple Loctite adhesive, per tool and supply recommendations.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the consequence of not performing adequate V Block maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eLack of adequate maintenance will shorten the product's life. Always follow the recommended schedule.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat tools are needed for V Block long-term maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eFor long-term V Block maintenance, you need a metric hex key, soapy water solution, solvent to clean grease, Harken winch grease, and 222 Purple Loctite adhesive.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow often should long-term maintenance be performed on V Blocks?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eLong-term maintenance should be performed after prolonged use, before long-term storage, or if the sheave is turning roughly or making grinding noises.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the guidance for using grease during maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eDo not grease V Blocks unless specified in the instructions; improper use can cause bearings to skid rather than roll and lead to wear.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow should fasteners be secured after V Block maintenance?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eUse blue (or 222 Purple) Loctite adhesive to secure fasteners after maintenance, ensuring threads are clean and residue-free first.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat precautions should be taken when mounting hardware to prevent corrosion?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eUse Tef-Gel® between dissimilar metals, and ensure fastener holes are sealed to prevent water ingress. Inspect regularly for signs of corrosion.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWho is responsible for proper specification and mounting of the V Block?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eThe customer is responsible for specifying, mounting, and aligning the product to achieve its rated load capacity.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat safety warnings are associated with installing or using V Blocks?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eStrictly follow all instructions to avoid hazards that may kill or injure. Make sure people and objects are clear of moving components.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre there torque specification guidelines for assembling V Block fasteners?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eTorque settings for most custom products are not available; consult fastener supplier guidelines based on diameter and lubrication.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIf bearings or sheaves are damaged, what is the recommendation?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eReplace any worn or damaged roller bearings, and return sheaves with worn bearings to Harken for service.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan bearing cages be forced during disassembly?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eDo not force the bearing cage during disassembly, as it can break. Use the cutout and split cage to separate as directed.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat should be done if the sheave turns roughly or makes noise?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eOverhaul the V Block immediately if the sheave is turning roughly or there is grinding, especially metal-on-metal.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan the bearing cage be forced during disassembly or assembly?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eNo, do not force the bearing cage or it can break. Use the cutout and split as indicated in the instructions.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhen should V Block components be replaced?\u003c\/summary\u003e\u003cdiv\u003e\u003cp\u003eReplace any worn or damaged components after inspection. Use only original Harken parts for replacement.\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 specific tools required for V Block long-term maintenance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"You should use a metric hex key, soapy water solution, and solvent for cleaning grease. Harken winch grease and 222 Purple Loctite® adhesive are also specified.\"}}, {\"@type\": \"Question\", \"name\": \"Should V Blocks be greased during maintenance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Do not grease the product unless specified, as this can cause bearing skidding and wear. Only specific bearings may require grease—follow instructions closely.\"}}, {\"@type\": \"Question\", \"name\": \"What tools are required for long-term V Block inspection and maintenance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A metric hex key, soapy water, solvent for grease, Harken winch grease, and 222 Purple Loctite adhesive are needed.\"}}, {\"@type\": \"Question\", \"name\": \"What are the loading requirements for installing the V Block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Mount only where load does not exceed Maximum Working Load; structures and anchors must also meet or exceed this load rating.\"}}, {\"@type\": \"Question\", \"name\": \"Are there application or environmental limitations for V Blocks?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Harken custom products are designed for use in a marine saltwater environment provided regular maintenance is followed.\"}}, {\"@type\": \"Question\", \"name\": \"What should you inspect during short-term maintenance of V Blocks?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Inspect all components for wear, corrosion, or damage. 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Avoid grease unless specified, and see manual for greasing instructions.\"}}, {\"@type\": \"Question\", \"name\": \"Should you use grease during maintenance of V Blocks?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Only use grease if specified; using grease in non-specified areas can cause bearing wear due to skidding.\"}}, {\"@type\": \"Question\", \"name\": \"How should V Block fasteners be secured after maintenance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Secure fasteners using blue or purple Loctite adhesive, per tool and supply recommendations.\"}}, {\"@type\": \"Question\", \"name\": \"What is the consequence of not performing adequate V Block maintenance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Lack of adequate maintenance will shorten the product's life. Always follow the recommended schedule.\"}}, {\"@type\": \"Question\", \"name\": \"What tools are needed for V Block long-term maintenance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"For long-term V Block maintenance, you need a metric hex key, soapy water solution, solvent to clean grease, Harken winch grease, and 222 Purple Loctite adhesive.\"}}, {\"@type\": \"Question\", \"name\": \"How often should long-term maintenance be performed on V Blocks?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Long-term maintenance should be performed after prolonged use, before long-term storage, or if the sheave is turning roughly or making grinding noises.\"}}, {\"@type\": \"Question\", \"name\": \"What is the guidance for using grease during maintenance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Do not grease V Blocks unless specified in the instructions; improper use can cause bearings to skid rather than roll and lead to wear.\"}}, {\"@type\": \"Question\", \"name\": \"How should fasteners be secured after V Block maintenance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use blue (or 222 Purple) Loctite adhesive to secure fasteners after maintenance, ensuring threads are clean and residue-free first.\"}}, {\"@type\": \"Question\", \"name\": \"What precautions should be taken when mounting hardware to prevent corrosion?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use Tef-Gel® between dissimilar metals, and ensure fastener holes are sealed to prevent water ingress. Inspect regularly for signs of corrosion.\"}}, {\"@type\": \"Question\", \"name\": \"Who is responsible for proper specification and mounting of the V Block?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The customer is responsible for specifying, mounting, and aligning the product to achieve its rated load capacity.\"}}, {\"@type\": \"Question\", \"name\": \"What safety warnings are associated with installing or using V Blocks?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Strictly follow all instructions to avoid hazards that may kill or injure. Make sure people and objects are clear of moving components.\"}}, {\"@type\": \"Question\", \"name\": \"Are there torque specification guidelines for assembling V Block fasteners?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Torque settings for most custom products are not available; consult fastener supplier guidelines based on diameter and lubrication.\"}}, {\"@type\": \"Question\", \"name\": \"If bearings or sheaves are damaged, what is the recommendation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Replace any worn or damaged roller bearings, and return sheaves with worn bearings to Harken for service.\"}}, {\"@type\": \"Question\", \"name\": \"Can bearing cages be forced during disassembly?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Do not force the bearing cage during disassembly, as it can break. Use the cutout and split cage to separate as directed.\"}}, {\"@type\": \"Question\", \"name\": \"What should be done if the sheave turns roughly or makes noise?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Overhaul the V Block immediately if the sheave is turning roughly or there is grinding, especially metal-on-metal.\"}}, {\"@type\": \"Question\", \"name\": \"Can the bearing cage be forced during disassembly or assembly?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No, do not force the bearing cage or it can break. Use the cutout and split as indicated in the instructions.\"}}, {\"@type\": \"Question\", \"name\": \"When should V Block components be replaced?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Replace any worn or damaged components after inspection. Use only original Harken parts for replacement.\"}}]}\u003c\/script\u003e\u003c!-- \/sr-faq --\u003e\u003c!-- \/harken-official --\u003e","brand":"Harken","offers":[{"title":"Default Title","offer_id":53195987681617,"sku":"3295","price":1712.04,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4434\/4913\/files\/9f6001bd-369e-43c4-a8c8-017aa4297583.jpg?v=1772622929","url":"https:\/\/www.sailrace.com\/el\/products\/harken-30t-carbon-loop-v-block","provider":"SailRACE","version":"1.0","type":"link"}