{"title":"Pulleys","description":"\u003ch2\u003eAlternator pulleys: adapting engine drive\u003c\/h2\u003e\n\u003cp\u003eThe alternator pulley transfers belt force between the engine and the alternator. Its diameter, number of grooves, and alignment directly affect alternator RPM, slip risk, belt wear, and load stability.\u003c\/p\u003e\n\n\u003ch3\u003eDiameter and alternator RPM\u003c\/h3\u003e\n\u003cp\u003eThe pulley diameter changes the transmission ratio. A smaller pulley increases alternator RPM at equal engine RPM; a larger pulley reduces it. The \u003ca href=\"\/en-us\/products\/mastervolt-poulie-multi-gorges-8-48-1mm-electricite-marine\"\u003eMulti-groove pulley (8) Ø 48.1 mm\u003c\/a\u003e and the \u003ca href=\"\/en-us\/products\/mastervolt-poulie-multi-gorges-8-diametre-56mm-alternateur\"\u003eMulti-groove pulley (8) Ø 56 mm\u003c\/a\u003e suit different setups depending on the engine pulley, available space, and target RPM.\u003c\/p\u003e\n\n\u003ch3\u003eNumber of grooves and belt grip\u003c\/h3\u003e\n\u003cp\u003eMulti-groove pulleys increase contact surface with the belt and reduce slip, especially on high-power alternators. The \u003ca href=\"\/en-us\/products\/mastervolt-poulie-multi-gorges-6-alternateur-alpha\"\u003eMulti-groove pulley (6) for Alpha 24\/110 and Alpha 24\/150\u003c\/a\u003e fits mounts compatible with these alternators, while 8-groove versions suit belts and drives designed for this profile.\u003c\/p\u003e\n\n\u003ch3\u003eMounting checkpoints\u003c\/h3\u003e\n\u003cp\u003eBefore replacement, check belt type, number of grooves, diameter, bore, alignment with the engine pulley, and space around the alternator. Poor compatibility can cause noise, overheating, premature wear, or reduced output.\u003c\/p\u003e\n\n\u003ch3\u003eBuilding the complete system\u003c\/h3\u003e\n\u003cp\u003ePulleys are part of the engine power generation assembly. To complete the installation, also see the \u003ca href=\"\/en-us\/collections\/alternateurs\"\u003ealternators\u003c\/a\u003e, \u003ca href=\"\/en-us\/collections\/accessoires-alternateurs\"\u003ealternator accessories\u003c\/a\u003e, \u003ca href=\"\/en-us\/collections\/production\"\u003epower generation\u003c\/a\u003e, and \u003ca href=\"\/en-us\/collections\/electricite\"\u003eelectricity\u003c\/a\u003e collections.","products":[{"product_id":"mastervolt-poulie-multi-gorges-6-alternateur-alpha","title":"Multi-groove pulley (6) for Alpha 24\/110 and Alpha 24\/150","description":"\u003cp\u003e\n    The \u003cstrong\u003eMastervolt 6-groove multi-groove pulley (6)\u003c\/strong\u003e is an essential replacement component designed specifically to maintain optimal performance of Alpha series marine alternators. This pulley, featuring six grooves, ensures reliable and efficient power transmission between the engine and the alternator, thereby contributing to stable onboard power generation.\n\u003c\/p\u003e\n\u003ch3\u003eCompatibility and Integration\u003c\/h3\u003e\n\u003cp\u003e\n    Designed as a direct replacement part, this pulley is compatible with several Mastervolt Alpha alternator models, including versions \u003cstrong\u003eAlpha 12\/130\u003c\/strong\u003e, \u003cstrong\u003eAlpha 24\/75\u003c\/strong\u003e, \u003cstrong\u003eAlpha 24\/110\u003c\/strong\u003e, and \u003cstrong\u003eAlpha 24\/150\u003c\/strong\u003e. Unlike complete alternators such as the Mastervolt Alpha Pro models or competing ranges from Balmar or Victron Energy, this pulley serves as a preventive or corrective maintenance component, essential for extending the lifespan of your existing equipment. It ensures precise adaptation and performance compliant with the manufacturer's original specifications.\n\u003c\/p\u003e\n\u003ch3\u003eTechnical Importance\u003c\/h3\u003e\n\u003cp\u003e\n    Using an \u003cstrong\u003eoriginal Mastervolt\u003c\/strong\u003e pulley is crucial to avoid misalignments, premature belt wear, and efficiency losses. A worn or damaged pulley can lead to inefficient battery charging and potential failures in the electrical system. This component is therefore vital for the reliability of your marine electrical installation, ensuring that your Alpha alternator continues to operate at full capacity under the demanding conditions of the marine environment.\n\u003c\/p\u003e","brand":"Mastervolt","offers":[{"title":"Default Title","offer_id":53723888845140,"sku":"48400030","price":26.19,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0988\/3274\/4788\/files\/main-square_de2f28ac-18c7-40c1-8dfd-70c379f00a01.jpg?v=1778021497"},{"product_id":"mastervolt-poulie-multi-gorges-8-48-1mm-electricite-marine","title":"Multi-groove pulley (8) Ø 48.1 mm","description":"\u003cp\u003e\n    The \u003cstrong\u003eMastervolt 8-groove pulley (Ø 48.1mm)\u003c\/strong\u003e is a critical mechanical component designed for power generation systems aboard vessels. Manufactured by Mastervolt, a recognized leader in marine electrical solutions, this pulley is specifically engineered to ensure reliable and efficient power transmission.\n\u003c\/p\u003e\n\u003ch3\u003eDesign and Technical Specifications\u003c\/h3\u003e\n\u003cp\u003e\n    This pulley features an \u003cstrong\u003e8-groove configuration\u003c\/strong\u003e, optimized for stable belt drive operation and minimal slippage, which is crucial for alternators and other rotating equipment. With a \u003cstrong\u003ediameter of 48.1 mm\u003c\/strong\u003e and a \u003cstrong\u003ewidth of 39.4 mm\u003c\/strong\u003e, it is sized for precise integration into Mastervolt charging systems. Its robust design ensures excellent durability and resistance to common mechanical stresses in marine environments.\n\u003c\/p\u003e\n\u003ch3\u003ePosition in the Mastervolt Range\u003c\/h3\u003e\n\u003cp\u003e\n    As a spare part, this pulley is part of Mastervolt’s energy solutions ecosystem, ensuring compatibility and optimal performance with the brand’s alternators and energy management systems. Unlike more complex units such as Alpha alternators or Mass Combi chargers, this pulley is a fundamental component of the drivetrain, providing the essential mechanical link. Its role is comparable to that of an alternator pulley in competitors like Balmar or Victron Energy, but it is specifically tailored to the high-performance and reliability requirements of Mastervolt equipment. It is not an obsolete product but a maintenance or replacement component for existing systems or new installations.","brand":"Mastervolt","offers":[{"title":"Default Title","offer_id":53723888910676,"sku":"48420170","price":58.32,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0988\/3274\/4788\/files\/main-square_a8ab84ba-7d18-49dd-bfd0-19db0bdd3a8f.jpg?v=1778021525"},{"product_id":"mastervolt-poulie-multi-gorges-8-diametre-56mm-alternateur","title":"Multi-groove pulley (8) Ø 56 mm","description":"\u003cp\u003e\n    The Mastervolt \u003cstrong\u003e8-groove multi-groove pulley (8) Ø56mm\u003c\/strong\u003e, part number 48420140, is a precision mechanical component designed for marine power generation systems. This pulley is specifically sized with a 56 mm diameter and a 38.9 mm width, featuring eight grooves for optimal and stable power transmission. It aligns with Mastervolt’s philosophy of ensuring energy independence aboard vessels.\n\u003c\/p\u003e\n\u003ch3\u003eDesign and Performance\u003c\/h3\u003e\n\u003cp\u003e\n    Manufactured in Germany, this Mastervolt pulley is a critical spare part for the brand’s alternators. Its multi-groove design ensures better grip and uniform load distribution, reducing belt wear and extending the lifespan of the entire drive system. Compared to simpler pulley designs or those with fewer grooves, this configuration delivers increased efficiency and superior reliability in demanding marine environments. While Mastervolt offers an extensive range of electrical equipment, this pulley serves as a specific replacement part, ensuring compatibility and original performance for existing Mastervolt installations.\n\u003c\/p\u003e\n\u003ch3\u003eIntegration and Reliability\u003c\/h3\u003e\n\u003cp\u003e\n    Integrating this pulley into an existing Mastervolt system is straightforward, as it is designed as an exact replacement part. Mastervolt is recognized for the robustness and reliability of its equipment, and this pulley is no exception. It is essential for maintaining the performance of Mastervolt alternators and generators, preventing failures caused by wear in transmission components. Unlike generic brands, using original Mastervolt parts ensures that technical specifications and manufacturing tolerances are met, which is critical for the longevity and safety of marine electrical installations. This product is offered without additional accessories, focusing solely on providing the replacement part itself.\n\u003c\/p\u003e","brand":"Mastervolt","offers":[{"title":"Default Title","offer_id":53723889074516,"sku":"48420140","price":214.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0988\/3274\/4788\/files\/main-square_44be13cf-6101-4d9c-b195-9448917b20f7.jpg?v=1778021512"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0988\/3274\/4788\/collections\/fdc701659e71c288394a21e16d2c2621.png?v=1779975532","url":"https:\/\/skysat.fr\/en-us\/collections\/pulleys.oembed","provider":"Skysat","version":"1.0","type":"link"}