{
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    "date": "2025-03-24T03:00:29",
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        "rendered": "<div>\n<h2 dir=\"auto\">Screw Gears (Crossed Helical Gears)<\/h2>\n<p class=\"break-words\" dir=\"auto\">Screw gears, sometimes called crossed helical gears, are special gears that help move things between two shafts (like sticks that spin) that don\u2019t touch and aren\u2019t lined up straight. Regular helical gears for straight shafts have the same twist angle but twist in opposite ways. For screw gears, the twist angles can be whatever you need, and the angle between the shafts is usually the total of the two twist angles added together. A common angle is 90 degrees, like a corner, but other angles can work too. These gears only touch at tiny spots, not big lines, so they\u2019re not as strong or efficient as other gears and can\u2019t carry super heavy stuff.<\/p>\n<h3 dir=\"auto\">What They\u2019re Like and How They Work<\/h3>\n<ul class=\"marker:text-secondary\" dir=\"auto\">\n<li class=\"break-words\"><strong>Look<\/strong>: Screw gears have teeth that twist around like a spiral on a round disc. The teeth can lean right or left.<\/li>\n<li class=\"break-words\"><strong>Movement<\/strong>: When they spin, they don\u2019t just roll like other gears\u2014they twist like a screw going into wood. This makes them slide against each other at small points instead of rolling smoothly.<\/li>\n<li class=\"break-words\"><strong>Speed<\/strong>: How fast they spin depends on how many teeth the driving gear (the one that starts it) has compared to the driven gear (the one that follows). It\u2019s just the number of teeth on one divided by the other\u2014no tricky rules like some other gears have!<\/li>\n<\/ul>\n<h3 dir=\"auto\">Materials and Matching<\/h3>\n<ul class=\"marker:text-secondary\" dir=\"auto\">\n<li class=\"break-words\"><strong>Stuff They\u2019re Made Of<\/strong>: If both gears are the same material, they can rub too much and get scratched up. So, it\u2019s better to use different materials, like steel with plastic or stainless steel with bronze.<\/li>\n<li class=\"break-words\"><strong>Choices<\/strong>: You can get them in steel (strong), stainless steel (won\u2019t rust, good for food machines), aluminum-bronze (tough against wear), or plastic (light and doesn\u2019t need oil).<\/li>\n<\/ul>\n<h3 dir=\"auto\">How They Work and Where They\u2019re Used<\/h3>\n<ul class=\"marker:text-secondary\" dir=\"auto\">\n<li class=\"break-words\"><strong>Strength and Speed<\/strong>: They\u2019re not the best at carrying heavy things or spinning super fast because of all the sliding. They work best for medium jobs.<\/li>\n<li class=\"break-words\"><strong>Jobs<\/strong>: You might find them in machines that make stuff, move things like conveyor belts, or run pumps\u2014things that don\u2019t need tons of power.<\/li>\n<li class=\"break-words\"><strong>Oil<\/strong>: Since they slide a lot, they need special oil (like hypoid gear oil) to keep them from wearing out too fast.<\/li>\n<\/ul>\n<h3 dir=\"auto\">Good and Not-So-Good Parts<\/h3>\n<ul class=\"marker:text-secondary\" dir=\"auto\">\n<li class=\"break-words\"><strong>Good Stuff<\/strong>: They\u2019re quiet when they run and can be moved a bit side-to-side without messing up how they work. They\u2019re great for shafts that cross but don\u2019t touch.<\/li>\n<li class=\"break-words\"><strong>Not-So-Good Stuff<\/strong>: The sliding makes them less efficient, and they can\u2019t handle big loads because they only touch at tiny points. They also push sideways a lot, so they need strong supports.<\/li>\n<\/ul>\n<h3 dir=\"auto\">Types and Details<\/h3>\n<ul class=\"marker:text-secondary\" dir=\"auto\">\n<li class=\"break-words\"><strong>Kinds<\/strong>: They come in sizes called modules 1 to 4, with 10 to 30 teeth. You can add holes or change them a bit if needed.<\/li>\n<li class=\"break-words\"><strong>Twist Angles<\/strong>: Often they have a 45-degree twist, and you can pair them in different ways\u2014both twisting the same way or opposite ways\u2014depending on how the shafts are set up.<\/li>\n<\/ul>\n<p class=\"break-words\" dir=\"auto\">In short, screw gears are cool for moving things between crossed shafts quietly and easily, but they\u2019re not the strongest or fastest gears because they slide instead of roll and only touch at small spots.<\/p>\n<\/div>\n<h2>Crossed Helical Gears (Screw Gears): Precision Engineering by FMP Company<\/h2>\n<p>Crossed helical gears, commonly known as screw gears, are a specialized type of hyperboloid gear designed for the unique purpose of mating skew shafts\u2014axes that cross without intersecting. Unlike traditional <a href=\"https:\/\/fmp-components.com\/en\/helical-gears\/\">helical gears<\/a> with parallel axes, screw gears enable motion transmission between non-parallel, non-intersecting shafts, often at a 90\u00b0 angle, though other configurations are possible. This makes them an essential component in mechanical systems requiring versatile shaft alignments. In Italy, where industrial innovation thrives in cities like Milan, Venice, Florence, and Bologna, the demand for high-quality screw gears is steadily rising, and FMP Company is proud to meet this need with expertly crafted solutions.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-7376 aligncenter\" src=\"https:\/\/fmp-components.com\/wp-content\/uploads\/2025\/03\/screw-gear-crossed-helical-gear-product-9.webp\" alt=\"screw-gear-crossed-helical-gear\" width=\"958\" height=\"239\" title=\"\" srcset=\"https:\/\/fmp-components.com\/wp-content\/uploads\/2025\/03\/screw-gear-crossed-helical-gear-product-9.webp 958w, https:\/\/fmp-components.com\/wp-content\/uploads\/2025\/03\/screw-gear-crossed-helical-gear-product-9-480x120.webp 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 958px, 100vw\" \/><\/p>\n<p>Screw gears operate with a distinctive screw motion rather than pure rolling, resulting from their differing helix angles (though with the same hand of helix). This sliding motion of the flanks, while requiring special lubrication like hypoid gear oil to minimize wear, offers unique advantages such as low-noise operation and axial flexibility. Unlike parallel helical gears, which transition from point to line contact, crossed helical gears maintain point contact, making them ideal for moderate torque and speed applications, such as drives for machine tools. Compared to worm gears, which provide higher torque through line contact, screw gears excel in quieter performance\u2014perfect for precision industries in bustling hubs like Milan and Florence.<\/p>\n<h2>Specification of Crossed Helical Gear<\/h2>\n<table class=\"table\" border=\"1\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr class=\"firstRow\">\n<td>Model Number<\/td>\n<td>M1,M1.5,M2,M2.5,M3,M4,M5,M8,M12 \u00a0 and etc.<\/td>\n<\/tr>\n<tr>\n<td>Material<\/td>\n<td>Brass, \u00a0 C45 steel, Stainless steel, Copper, POM, Aluminum, Alloy, and so on<\/td>\n<\/tr>\n<tr>\n<td>Surface \u00a0 treatment<\/td>\n<td>Zinc-plated, Nickel plated, Passivation, Oxidation, Anodization,\u00a0 \u00a0 Geomet, Dacromet, Black Oxide, Phosphatizing, Powder Coating, and \u00a0 Electrophoresis.<\/td>\n<\/tr>\n<tr>\n<td>Standard<\/td>\n<td>ISO, \u00a0 DIN, ANSI, JIS, BS and Non-standard.<\/td>\n<\/tr>\n<tr>\n<td>Precision<\/td>\n<td>DIN6,DIN7,DIN8,DIN9.<\/td>\n<\/tr>\n<tr>\n<td>Teeth \u00a0 treatment<\/td>\n<td>Hardened, Milled, or Ground<\/td>\n<\/tr>\n<tr>\n<td>Tolerance<\/td>\n<td>0.001mm-0.01mm-0.1mm<\/td>\n<\/tr>\n<tr>\n<td>Finish<\/td>\n<td>shot\/sandblast, heat treatment, annealing, tempering, polishing, anodizing, zinc-plated<\/td>\n<\/tr>\n<tr>\n<td>Items \u00a0 packing<\/td>\n<td>Plastic \u00a0 bag+Cartons Or Wooden Packing<\/td>\n<\/tr>\n<tr>\n<td>Payment \u00a0 terms<\/td>\n<td>T\/T, \u00a0 L\/C<\/td>\n<\/tr>\n<tr>\n<td>Production \u00a0 lead time<\/td>\n<td>20\u00a0 \u00a0 business days for the sample,25 days for the bulk<\/td>\n<\/tr>\n<tr>\n<td>Samples<\/td>\n<td>Sample price range from $2 to $100. \u00a0 sample express request paid by clients<\/td>\n<\/tr>\n<tr>\n<td>Application<\/td>\n<td>1. \u00a0 Automatic controlling machine \u00a0 2. Semiconductor industry \u00a0 3. General industry machinery \u00a0 4. Medical equipment \u00a0 5. Solar energy equipment \u00a0 6. Machine tool \u00a0 7. Parking system \u00a0 8. High-speed rail and aviation transportation equipment, etc.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 class=\"break-words\">Types of Screw Gears(Crossed Helical Gears)<\/h2>\n<div>\n<table style=\"width: 100%;\" border=\"1\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\">\n<thead class=\"border-b border-primary\/20\">\n<tr class=\"border-primary\/10\">\n<th class=\"break-words\"><strong>Category<\/strong><\/th>\n<th class=\"break-words\"><strong>Material Composition<\/strong><\/th>\n<th class=\"break-words\"><strong>Module Range<\/strong><\/th>\n<th class=\"break-words\"><strong>Helix Angle<\/strong><\/th>\n<th class=\"break-words\"><strong>Teeth Count<\/strong><\/th>\n<th class=\"break-words\"><strong>Strength (Tensile)<\/strong><\/th>\n<th class=\"break-words\"><strong>Corrosion Resistance<\/strong><\/th>\n<th class=\"break-words\"><strong>Typical Applications<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr class=\"border-primary\/10\">\n<td class=\"break-words\"><strong>Steel Screw Gears<\/strong><\/td>\n<td class=\"break-words\">Carbon steel or alloy steel (e.g., AISI 1045, 4140)<\/td>\n<td class=\"break-words\">1 to 4<\/td>\n<td class=\"break-words\">45\u00b0 typical<\/td>\n<td class=\"break-words\">10 to 50+<\/td>\n<td class=\"break-words\">500\u20131000 MPa<\/td>\n<td class=\"break-words\">Low to Moderate<\/td>\n<td class=\"break-words\">Industrial machinery, automotive systems<\/td>\n<\/tr>\n<tr class=\"border-primary\/10\">\n<td class=\"break-words\"><strong>Stainless Steel Screw Gears<\/strong><\/td>\n<td class=\"break-words\">Stainless steel (e.g., SUS303, SUS304)<\/td>\n<td class=\"break-words\">1 to 4<\/td>\n<td class=\"break-words\">45\u00b0 typical<\/td>\n<td class=\"break-words\">10 to 50+<\/td>\n<td class=\"break-words\">500\u2013700 MPa<\/td>\n<td class=\"break-words\">High<\/td>\n<td class=\"break-words\">Food machinery, marine equipment<\/td>\n<\/tr>\n<tr class=\"border-primary\/10\">\n<td class=\"break-words\"><strong>Aluminum Bronze Screw Gears<\/strong><\/td>\n<td class=\"break-words\">Aluminum bronze (e.g., CuAl10Fe5Ni5)<\/td>\n<td class=\"break-words\">1 to 4<\/td>\n<td class=\"break-words\">45\u00b0 typical<\/td>\n<td class=\"break-words\">10 to 50+<\/td>\n<td class=\"break-words\">600\u2013800 MPa<\/td>\n<td class=\"break-words\">Very High<\/td>\n<td class=\"break-words\">Worm drives, corrosive environments<\/td>\n<\/tr>\n<tr class=\"border-primary\/10\">\n<td class=\"break-words\"><strong>Plastic Screw Gears<\/strong><\/td>\n<td class=\"break-words\">Nylon, Acetal, or MC Nylon<\/td>\n<td class=\"break-words\">1 to 3<\/td>\n<td class=\"break-words\">45\u00b0 typical<\/td>\n<td class=\"break-words\">10 to 40+<\/td>\n<td class=\"break-words\">50\u2013100 MPa<\/td>\n<td class=\"break-words\">High<\/td>\n<td class=\"break-words\">Light-duty systems, noise-sensitive uses<\/td>\n<\/tr>\n<tr class=\"border-primary\/10\">\n<td class=\"break-words\"><strong>Metal Screw Gears<\/strong><\/td>\n<td class=\"break-words\">General metal (e.g., brass, cast iron)<\/td>\n<td class=\"break-words\">1 to 4<\/td>\n<td class=\"break-words\">45\u00b0 typical<\/td>\n<td class=\"break-words\">10 to 50+<\/td>\n<td class=\"break-words\">300\u2013800 MPa<\/td>\n<td class=\"break-words\">Varies (Low to High)<\/td>\n<td class=\"break-words\">General power transmission, machinery<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div>\n<h3 class=\"\" dir=\"auto\">Notes on Specifications:<\/h3>\n<ol class=\"marker:text-secondary\" dir=\"auto\">\n<li class=\"break-words\"><strong>Module Range<\/strong>: The module (a measure of gear tooth size) typically ranges from 1 to 4 for most screw gears, though smaller or larger modules may be available depending on the application.<\/li>\n<li class=\"break-words\"><strong>Helix Angle<\/strong>: Screw gears commonly use a 45\u00b0 helix angle to enable non-intersecting, non-parallel shaft motion transmission, though this can vary slightly.<\/li>\n<li class=\"break-words\"><strong>Teeth Count<\/strong>: The number of teeth depends on the gear size and application, typically ranging from 10 to over 50.<\/li>\n<li class=\"break-words\"><strong>Strength (Tensile)<\/strong>: Tensile strength varies by material; steel and aluminum bronze offer high strength, while plastic has lower strength but is lightweight.<\/li>\n<li class=\"break-words\"><strong>Corrosion Resistance<\/strong>: Stainless steel and aluminum bronze excel in corrosive environments, while carbon steel requires coatings or treatments for similar performance.<\/li>\n<li class=\"break-words\"><strong>Applications<\/strong>: Each material suits specific needs\u2014steel for durability, stainless steel for hygiene, aluminum bronze for wear resistance, plastic for low noise\/weight, and other metals for versatility.<\/li>\n<\/ol>\n<p class=\"break-words\" dir=\"auto\">This table provides helical gear specifications by category. For exact details please <a href=\"mailto:info@fmpcomponents.it\">email<\/a> us.<\/p>\n<\/div>\n<\/div>\n<div>\n<h2>Why Choose FMP\uff1f<\/h2>\n<p class=\"break-words\">As a trusted manufacturer, FMP Company produces a diverse range of Crossed Helical Gears (Screw Gears) to suit various industrial applications. Whether you\u2019re in Milan seeking standard models or in Venice requiring a bespoke design, we offer customization to ensure your machinery performs at its best. Our gears are engineered with precision, adhering to the highest standards of durability and efficiency. If you\u2019re browsing our product list\u2014whether from Florence, Bologna, or beyond\u2014and don\u2019t find the exact model you need, rest assured it\u2019s likely just awaiting its debut on our catalog. Simply email us with your requirements, and our skilled engineers will respond within 24 hours with a tailored solution.<\/p>\n<p class=\"break-words\">FMP Company is committed to supporting Italy\u2019s industrial landscape with superior screw gear technology. From the fashion-forward factories of Milan to the historic craftsmanship of Florence, and from the maritime innovation of Venice to the mechanical expertise of Bologna, we\u2019re here to power your operations with reliable, custom-engineered crossed helical gears. Contact us today to explore our offerings or inquire about a specific model\u2014our team is ready to assist you promptly, ensuring your projects stay on track with the quality and precision you deserve.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-7374 aligncenter\" src=\"https:\/\/fmp-components.com\/wp-content\/uploads\/2025\/03\/screw-gear-crossed-helical-gear-product-7.webp\" alt=\"screw-gear-crossed-helical-gear\" width=\"932\" height=\"621\" title=\"\" srcset=\"https:\/\/fmp-components.com\/wp-content\/uploads\/2025\/03\/screw-gear-crossed-helical-gear-product-7.webp 932w, https:\/\/fmp-components.com\/wp-content\/uploads\/2025\/03\/screw-gear-crossed-helical-gear-product-7-480x320.webp 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 932px, 100vw\" \/><\/p>\n<\/div>",
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        "rendered": "<p>Screw Gears (Crossed Helical Gears) Screw gears, sometimes called crossed helical gears, are special gears that help move things between two shafts (like sticks that spin) that don\u2019t touch and aren\u2019t lined up straight. Regular helical gears for straight shafts have the same twist angle but twist in opposite ways. For screw gears, the twist [&hellip;]<\/p>",
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