{"id":1424,"date":"2026-07-13T05:23:02","date_gmt":"2026-07-13T05:23:02","guid":{"rendered":"https:\/\/gearrack.top\/product\/helical-bevel-gear-tangential-tooth-low-noise-bevel-drive\/"},"modified":"2026-07-13T05:43:43","modified_gmt":"2026-07-13T05:43:43","slug":"helical-bevel-gear","status":"publish","type":"product","link":"https:\/\/gearrack.top\/fr\/product\/helical-bevel-gear\/","title":{"rendered":"Engrenage conique h\u00e9lico\u00efdal \u2013 Denture tangentielle, transmission conique silencieuse"},"content":{"rendered":"<div style=\"font-family: 'Helvetica Neue', Arial, sans-serif; color: #1f2937; line-height: 1.75; max-width: 1200px; margin: 0 auto; padding: 2%;\">\n<h2 style=\"color: #1a3c6e; font-size: clamp(22px, 3vw + 10px, 30px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 30px;\">Product Overview<\/h2>\n<p><img decoding=\"async\" style=\"max-width: 100%; height: auto; display: block; margin: 16px auto; border-radius: 6px; box-shadow: 0 2px 10px rgba(26,60,110,0.12);\" title=\"helical bevel gear tangential tooth line low noise bevel transmission\" src=\"https:\/\/gearrack.top\/wp-content\/uploads\/2026\/07\/Zero-degree-and-spiral-bevel-gears.webp\" alt=\"Korea Ever-Power helical bevel gear tangential tooth bevel drive\" \/><\/p>\n<p style=\"font-size: clamp(14px, 2vw + 10px, 16px);\">The <strong>helical bevel gear<\/strong> \u2014 also referred to as a tangential bevel gear \u2014 is defined by its tooth line geometry on the pitch cone development. When the pitch cone surface is unrolled into a flat plane, the tooth lines of a helical bevel gear are tangent to a circle concentric with the pitch cone axis, rather than running straight through the cone apex as in a straight bevel gear. This tangential orientation means the tooth has an oblique angle that increases progressively from the small end to the large end of the face, creating a form of helical engagement across the tooth width.<\/p>\n<p style=\"font-size: clamp(14px, 2vw + 10px, 16px);\">This geometry gives the <strong>helical bevel gear<\/strong> a higher contact ratio than a straight bevel gear pair of equivalent module and tooth count. Multiple tooth pairs share the load at any instant, reducing the impact spike at each tooth mesh cycle. The result is smoother rotation, lower noise during high-speed operation, and the ability to achieve a given transmission ratio with fewer teeth on each gear \u2014 producing a more compact gearset than a straight bevel pair at the same ratio. The bull gear and pinion of a <a style=\"color: #1a3c6e; text-decoration: underline;\" href=\"https:\/\/gearrack.top\/fr\/product-category\/bevel-gears\/\">helical bevel gear<\/a> pair carry equal and opposite helix angles, which balances the axial thrust components across the pair.<\/p>\n<p style=\"font-size: clamp(14px, 2vw + 10px, 16px);\">It is worth noting where helical bevel gears sit relative to other bevel gear types in the technology hierarchy. They represent a step above straight bevel gears in noise and load-sharing performance, but are produced by a more complex cutting process than spiral bevel gears and do not achieve the same efficiency of mass production. As spiral bevel gear cutting machines became widely available in the second half of the twentieth century, spiral bevel gears gradually displaced helical bevel gears in most new high-volume designs. Helical bevel gears today are produced primarily for replacement of existing machinery, for specific applications where their tooth geometry offers an advantage, and for designs where a customer drawing calls for this tooth form explicitly. Korea Ever-Power produces helical bevel gears to customer drawings and samples across the full module range M3 to M12 and beyond.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1370\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/gearrack.top\/wp-content\/uploads\/2026\/07\/Helical-Bevel-Gear.webp\" alt=\"Helical Bevel Gear - Tangential Tooth, Low Noise Bevel Drive\" width=\"600\" height=\"600\" srcset=\"https:\/\/gearrack.top\/wp-content\/uploads\/2026\/07\/Helical-Bevel-Gear.webp 600w, https:\/\/gearrack.top\/wp-content\/uploads\/2026\/07\/Helical-Bevel-Gear-480x480.webp 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 600px, 100vw\" \/><\/p>\n<h2 style=\"color: #1a3c6e; font-size: clamp(22px, 3vw + 10px, 30px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 40px;\">Tooth Geometry \u2014 What Makes a Helical Bevel Gear Different<\/h2>\n<div style=\"display: flex; flex-wrap: wrap; gap: 24px; align-items: flex-start; margin: 20px 0;\">\n<div style=\"flex: 0 0 auto; width: 100%; max-width: 420px;\"><img decoding=\"async\" style=\"width: 100%; height: auto; display: block; border-radius: 6px; box-shadow: 0 2px 8px rgba(26,60,110,0.10);\" title=\"helical bevel gear tooth line tangent to concentric circle on pitch cone development\" src=\"https:\/\/gearrack.top\/wp-content\/uploads\/2026\/07\/bevel-gear-contact.webp\" alt=\"helical bevel gear tooth contact pattern and tangential tooth line geometry\" \/><\/div>\n<div style=\"flex: 1 1 280px; min-width: 0;\">\n<p style=\"font-size: clamp(14px, 2vw + 10px, 16px); margin-top: 0;\">To understand the geometry of a helical bevel gear, it helps to compare it directly with the two other bevel gear forms that bracket it in the design space \u2014 the straight bevel gear below and the spiral bevel gear above.<\/p>\n<div style=\"border-left: 3px solid #1a3c6e; padding-left: 14px; margin-bottom: 13px;\">\n<p style=\"font-size: clamp(14px, 2vw + 10px, 16px); margin: 0 0 3px;\"><strong style=\"color: #1a3c6e;\">Straight bevel gear \u2014 tooth line through apex<\/strong><\/p>\n<p style=\"font-size: clamp(13px, 1.8vw + 8px, 15px); color: #374151; margin: 0;\">The tooth line on the pitch cone development passes directly through the pitch cone apex. All teeth along the face width engage simultaneously at each mesh cycle, producing instantaneous full-load contact. Contact ratio is at its lowest among the three forms.<\/p>\n<\/div>\n<div style=\"border-left: 3px solid #e8a020; padding-left: 14px; margin-bottom: 13px;\">\n<p style=\"font-size: clamp(14px, 2vw + 10px, 16px); margin: 0 0 3px;\"><strong style=\"color: #1a3c6e;\">Helical bevel gear \u2014 tooth line tangent to concentric circle<\/strong><\/p>\n<p style=\"font-size: clamp(13px, 1.8vw + 8px, 15px); color: #374151; margin: 0;\">The tooth line on the pitch cone development is tangent to a circle concentric with the pitch cone axis \u2014 it does not pass through the apex. This oblique orientation creates an angle between the tooth direction and the cone generatrix, similar in effect to the helix angle on a cylindrical helical gear. Contact begins at one end of the tooth and progresses across the face, raising the contact ratio and allowing smoother load transfer than a straight bevel gear.<\/p>\n<\/div>\n<div style=\"border-left: 3px solid #1a3c6e; padding-left: 14px; margin-bottom: 0;\">\n<p style=\"font-size: clamp(14px, 2vw + 10px, 16px); margin: 0 0 3px;\"><strong style=\"color: #1a3c6e;\">Spiral bevel gear \u2014 curved tooth along spiral line<\/strong><\/p>\n<p style=\"font-size: clamp(13px, 1.8vw + 8px, 15px); color: #374151; margin: 0;\">The tooth follows a curved spiral across the cone face, with a defined mean spiral angle. This form achieves the highest contact ratio, lowest noise, and greatest load capacity among the three. It is also produced most efficiently by dedicated bevel gear cutting machines at high volume, which is why it has displaced the helical bevel form in most modern high-volume applications.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p style=\"font-size: clamp(14px, 2vw + 10px, 16px);\">The helical bevel gear occupies the middle position: quieter and better-loaded than a straight bevel gear, but without the curved tooth of a spiral bevel gear. The equal and opposite helix angles on bull gear and pinion mean that the axial thrust forces on the two shafts largely cancel \u2014 each gear&#8217;s thrust pushes in the opposite direction along its own axis, so the net reaction load on the common gearbox housing is lower than with a spiral bevel pair where the thrust directions do not cancel in this way.<\/p>\n<h2 style=\"color: #1a3c6e; font-size: clamp(22px, 3vw + 10px, 30px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 40px;\">Helical Bevel vs. Straight Bevel vs. Spiral Bevel<\/h2>\n<p><img decoding=\"async\" style=\"max-width: 100%; height: auto; display: block; margin: 16px auto; border-radius: 6px;\" title=\"helical bevel gear position between straight bevel and spiral bevel in performance\" src=\"https:\/\/gearrack.top\/wp-content\/uploads\/2026\/07\/types-of-gears-2.webp\" alt=\"comparison of helical bevel gear straight bevel gear and spiral bevel gear\" \/><\/p>\n<p style=\"font-size: clamp(14px, 2vw + 10px, 16px);\">The three main bevel gear forms represent a progressive scale of tooth geometry complexity, manufacturing difficulty, and operating performance. Understanding where the helical form sits helps engineers decide when to specify it and when a straight or spiral alternative is more practical.<\/p>\n<div style=\"overflow-x: auto; width: 100%; margin: 16px 0;\">\n<table style=\"width: 100%; border-collapse: collapse; font-size: clamp(12px, 1.6vw + 8px, 15px);\">\n<thead>\n<tr style=\"background: #1a3c6e; color: #ffffff;\">\n<th style=\"padding: 11px 12px; text-align: left; border: 1px solid #1a3c6e; min-width: 130px;\">Criterion<\/th>\n<th style=\"padding: 11px 12px; text-align: left; border: 1px solid #1a3c6e;\">Straight Bevel Gear<\/th>\n<th style=\"padding: 11px 12px; text-align: left; border: 1px solid #1a3c6e; background: #1e4d8c;\">Engrenage conique h\u00e9lico\u00efdal<\/th>\n<th style=\"padding: 11px 12px; text-align: left; border: 1px solid #1a3c6e;\">Spiral Bevel Gear<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\"><strong>Tooth line on pitch cone<\/strong><\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">Straight, passes through apex<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1; background: #f0f6ff;\">Straight, tangent to concentric circle \u2014 does not pass through apex<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">Curved spiral across face<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\"><strong>Contact ratio<\/strong><\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">Lowest<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1; background: #e6f0ff;\">Higher than straight<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">Highest<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\"><strong>Noise at speed<\/strong><\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">Higher<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1; background: #f0f6ff;\">Reduced vs straight<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">Lowest<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\"><strong>Load sharing<\/strong><\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">Single tooth pair<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1; background: #e6f0ff;\">Partial multi-tooth sharing<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">Full multi-tooth sharing<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\"><strong>Axial thrust<\/strong><\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">None<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1; background: #f0f6ff;\">Equal &amp; opposite on two shafts \u2014 partially self-cancelling<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">Present; direction depends on hand of spiral<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\"><strong>Min teeth for ratio<\/strong><\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">Higher minimum tooth count<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1; background: #e6f0ff;\">Reduced minimum tooth count<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">Lowest minimum tooth count<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\"><strong>Manufacturing<\/strong><\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">Simplest<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1; background: #f0f6ff;\">More complex than straight; lower production rate than spiral<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">Most complex; highest mass-production rate with dedicated machines<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\"><strong>When to choose<\/strong><\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">Low speed, simple drives, cost priority<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1; background: #e6f0ff;\">Replacement of existing helical bevel; specific design requiring this tooth form<\/td>\n<td style=\"padding: 9px 12px; border: 1px solid #cbd5e1;\">High speed, high torque, noise-sensitive, new designs<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"font-size: clamp(14px, 2vw + 10px, 16px);\">For new designs where there is no legacy constraint, the spiral bevel gear is the standard recommendation at all but the lowest speeds. The helical bevel form is principally relevant for replacement parts in existing machinery where the original designer specified helical bevel geometry, and for specific applications where the partially self-cancelling axial thrust of equal-and-opposite helix angles is an advantage over a spiral bevel pair.<\/p>\n<h2 style=\"color: #1a3c6e; font-size: clamp(22px, 3vw + 10px, 30px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 40px;\">Technical Specifications<\/h2>\n<p style=\"font-size: clamp(14px, 2vw + 10px, 16px);\">Korea Ever-Power produces helical bevel gears to customer drawings and samples. The parameters below describe the general production capability; all specific values are confirmed at the quotation stage against your drawing or application data.<\/p>\n<div style=\"overflow-x: auto; width: 100%; margin: 16px 0;\">\n<table style=\"width: 100%; border-collapse: collapse; font-size: clamp(13px, 1.8vw + 8px, 16px);\">\n<thead>\n<tr style=\"background: #1a3c6e; color: #ffffff;\">\n<th style=\"padding: 12px; text-align: left; border: 1px solid #1a3c6e; min-width: 160px;\">Parameter<\/th>\n<th style=\"padding: 12px; text-align: left; border: 1px solid #1a3c6e;\">Standard Range \/ Options<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>Gear Type<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">Helical bevel gear (tangential bevel gear) \u2014 oblique tooth line tangent to concentric circle on pitch cone development<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>Module (Standard)<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">M3, M4, M5, M8, M12; other modules per customer drawing<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>Helix Angle<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">Equal and opposite on bull gear and pinion; per customer drawing or calculated from application data<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>Pressure Angle<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">20\u00b0 standard; other angles per drawing<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>Shaft Intersection Angle<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">90\u00b0 standard; other angles per drawing<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>Precision Grade<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">DIN 6, DIN 7, DIN 8, DIN 9<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>Manufacturing Standard<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">ISO, DIN, ANSI, JIS, BS, non-standard; customer drawings accepted<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>Tolerance<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">0.001 mm \u2013 0.01 mm \u2013 0.1 mm (grade-dependent)<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>Tooth Treatment<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">Hardened, milled, or ground (per accuracy grade and application)<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>Material \u2014 Ferrous<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">C45 carbon steel, alloy steel (40Cr, 42CrMo, 20CrMnTi), stainless steel (304, 316)<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>Material \u2014 Non-Ferrous<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">Brass, copper, aluminium alloy<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>Material \u2014 Non-Metallic<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">POM (acetal), engineering resins<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>Surface Treatment<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">Zinc-plated, nickel-plated, passivation, black oxide, phosphating, anodisation, Dacromet, powder coating, electrophoresis<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>Finition<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">Shot\/sandblast, heat treatment, annealing, tempering, polishing, anodising, zinc-plating<\/td>\n<\/tr>\n<tr style=\"background: #ffffff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>QA Documentation<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">Chemical composition report, mechanical performance report, UT report, heat treatment curve, dimensional inspection report<\/td>\n<\/tr>\n<tr style=\"background: #f0f6ff;\">\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\"><strong>Packing<\/strong><\/td>\n<td style=\"padding: 10px; border: 1px solid #cbd5e1;\">Plastic bag + carton, or wooden crate for large gears<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 style=\"color: #1a3c6e; font-size: clamp(22px, 3vw + 10px, 30px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 40px;\">Advantages and Design Considerations<\/h2>\n<div style=\"display: flex; flex-wrap: wrap; gap: 24px; align-items: flex-start; margin: 20px 0;\">\n<div style=\"flex: 0 0 auto; width: 100%; max-width: 380px;\"><img decoding=\"async\" style=\"width: 100%; height: auto; display: block; border-radius: 6px; box-shadow: 0 2px 8px rgba(26,60,110,0.10);\" title=\"helical bevel gear performance advantages over straight bevel gear\" src=\"https:\/\/gearrack.top\/wp-content\/uploads\/2026\/07\/bevel-gears.webp\" alt=\"helical bevel gear advantages smoother operation and compact design\" \/><\/div>\n<div style=\"flex: 1 1 280px; min-width: 0;\">\n<h3 style=\"color: #1a3c6e; font-size: clamp(16px, 2.2vw + 4px, 20px); margin-top: 0;\">Performance advantages over straight bevel gears<\/h3>\n<ol style=\"font-size: clamp(14px, 2vw + 10px, 16px); padding-left: 20px; line-height: 1.9; margin-bottom: 16px;\">\n<li style=\"margin-bottom: 5px;\"><strong>Higher contact ratio<\/strong> \u2014 the tangential tooth orientation increases the overlap between successive tooth pairs, so load is shared more smoothly at each mesh cycle. This is the same principle as the advantage of a helical cylindrical gear over a spur gear: the oblique contact line means teeth enter and leave mesh progressively rather than all at once.<\/li>\n<li style=\"margin-bottom: 5px;\"><strong>Reduced impact load<\/strong> \u2014 because contact is not instantaneous across the full face width, the dynamic force spike at each tooth engagement is lower. This extends tooth fatigue life and reduces bearing loads compared with a straight bevel pair transmitting the same torque.<\/li>\n<li style=\"margin-bottom: 5px;\"><strong>Lower noise during high-speed operation<\/strong> \u2014 the gradual engagement eliminates the high-frequency impact excitation that produces audible gear noise in straight bevel pairs above moderate pitch-line speeds.<\/li>\n<li style=\"margin-bottom: 5px;\"><strong>Smaller tooth count possible<\/strong> \u2014 the higher contact ratio allows a smaller number of teeth on each gear for a given transmission ratio, producing a more compact gearset. This is relevant when the gear body outer diameter must fit within a constrained housing envelope.<\/li>\n<li style=\"margin-bottom: 0;\"><strong>Partially self-cancelling axial thrust<\/strong> \u2014 the equal-and-opposite helix angles on bull gear and pinion mean the axial thrust forces on the two shafts act in directions that partially counteract each other in the housing. This reduces the net reaction load on the gearbox casing relative to a spiral bevel pair.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<div style=\"background: #fff7ed; border-left: 4px solid #e8a020; border-radius: 6px; padding: 16px 20px; margin: 16px 0;\">\n<h3 style=\"color: #1a3c6e; font-size: clamp(15px, 2vw + 4px, 18px); margin-top: 0;\">Design considerations<\/h3>\n<ol style=\"font-size: clamp(14px, 2vw + 10px, 16px); padding-left: 20px; line-height: 1.9; margin-bottom: 0;\">\n<li style=\"margin-bottom: 5px;\"><strong>Lower mass-production efficiency than spiral bevel gears<\/strong> \u2014 helical bevel gears cannot be produced at the throughput rates achievable with modern Gleason or Klingelnberg spiral bevel cutting machines. For new high-volume designs, spiral bevel gears are the economically preferred choice. Helical bevel gears are the correct specification when replacing existing helical bevel gears in machinery already in service.<\/li>\n<li style=\"margin-bottom: 5px;\"><strong>Axial thrust still present<\/strong> \u2014 unlike straight bevel gears, which generate no axial thrust, helical bevel gears do produce axial loads on both shafts. Bearings must be designed to carry these loads even though the self-cancelling effect reduces the net housing reaction. Angular contact bearings or taper roller bearings are the standard choice.<\/li>\n<li style=\"margin-bottom: 0;\"><strong>Helix angle must match on both gears<\/strong> \u2014 the bull gear and pinion must carry exactly equal and opposite helix angles. Replacing only one gear of a helical bevel pair with a different helix angle will produce incorrect tooth contact and rapid damage to both gears. Always replace the pair together when one gear is worn.<\/li>\n<\/ol>\n<\/div>\n<h2 style=\"color: #1a3c6e; font-size: clamp(22px, 3vw + 10px, 30px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 40px;\">Applications<\/h2>\n<p><img decoding=\"async\" style=\"max-width: 100%; height: auto; display: block; margin: 16px auto; border-radius: 6px;\" title=\"helical bevel gear used in machine tools semi-conductor and aviation equipment\" src=\"https:\/\/gearrack.top\/wp-content\/uploads\/2026\/07\/types-of-gears.webp\" alt=\"helical bevel gear applications in industrial machinery automation and high-speed rail\" \/><\/p>\n<p style=\"font-size: clamp(14px, 2vw + 10px, 16px);\">Helical bevel gears are specified in two broad contexts: replacement of existing helical bevel gear sets in equipment already in service, and new applications where the tooth form&#8217;s particular combination of characteristics \u2014 higher contact ratio than straight bevel, partially self-cancelling thrust, compact tooth count \u2014 is specifically advantageous. Korea Ever-Power produces for both.<\/p>\n<div style=\"display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; margin: 20px 0;\">\n<div style=\"background: #ffffff; border: 1px solid #d1dae8; border-radius: 8px; padding: 16px 18px; box-sizing: border-box;\">\n<div style=\"font-size: 24px; margin-bottom: 6px;\">\u2699<\/div>\n<h3 style=\"color: #1a3c6e; font-size: clamp(14px, 2vw + 4px, 17px); margin: 0 0 6px;\">General Industrial Machinery<\/h3>\n<p style=\"font-size: clamp(13px, 1.8vw + 8px, 15px); color: #374151; line-height: 1.7; margin: 0;\">Industrial gearboxes, machine tools, conveyors, and packaging lines that were originally designed with helical bevel gears require like-for-like replacement to maintain housing fit and bearing load design. Korea Ever-Power&#8217;s reverse engineering capability from worn samples ensures dimensional accuracy without requiring an original drawing.<\/p>\n<\/div>\n<div style=\"background: #ffffff; border: 1px solid #d1dae8; border-radius: 8px; padding: 16px 18px; box-sizing: border-box;\">\n<div style=\"font-size: 24px; margin-bottom: 6px;\">\ud83d\udee0<\/div>\n<h3 style=\"color: #1a3c6e; font-size: clamp(14px, 2vw + 4px, 17px); margin: 0 0 6px;\">Machine Tools<\/h3>\n<p style=\"font-size: clamp(13px, 1.8vw + 8px, 15px); color: #374151; line-height: 1.7; margin: 0;\">Certain milling machine heads and lathe bevel gear trains were designed with helical bevel gears to achieve quieter operation than straight bevel at spindle speeds, while using tooling available before modern spiral bevel cutting machines became widespread. Replacement gears for these machines require exact helix angle matching.<\/p>\n<\/div>\n<div style=\"background: #ffffff; border: 1px solid #d1dae8; border-radius: 8px; padding: 16px 18px; box-sizing: border-box;\">\n<div style=\"font-size: 24px; margin-bottom: 6px;\">\ud83d\udc8a<\/div>\n<h3 style=\"color: #1a3c6e; font-size: clamp(14px, 2vw + 4px, 17px); margin: 0 0 6px;\">Automatic Controlling Machines<\/h3>\n<p style=\"font-size: clamp(13px, 1.8vw + 8px, 15px); color: #374151; line-height: 1.7; margin: 0;\">Servo-driven positioning axes and cam-controlled automatic machines use bevel gears to change drive direction inside compact housings. Helical bevel gears in these applications reduce noise and vibration transmission to the sensing and measurement elements of the machine.<\/p>\n<\/div>\n<div style=\"background: #ffffff; border: 1px solid #d1dae8; border-radius: 8px; padding: 16px 18px; box-sizing: border-box;\">\n<div style=\"font-size: 24px; margin-bottom: 6px;\">\ud83d\udd29<\/div>\n<h3 style=\"color: #1a3c6e; font-size: clamp(14px, 2vw + 4px, 17px); margin: 0 0 6px;\">Semi-Conductor Equipment<\/h3>\n<p style=\"font-size: clamp(13px, 1.8vw + 8px, 15px); color: #374151; line-height: 1.7; margin: 0;\">Wafer handling robots and precision positioning stages in semi-conductor fabrication use small-module helical bevel gears in stainless steel or aluminium where low particle generation and smooth motion are required. The higher contact ratio of the helical form reduces vibration transmission to the wafer carrier.<\/p>\n<\/div>\n<div style=\"background: #ffffff; border: 1px solid #d1dae8; border-radius: 8px; padding: 16px 18px; box-sizing: border-box;\">\n<div style=\"font-size: 24px; margin-bottom: 6px;\">\ud83d\ude91<\/div>\n<h3 style=\"color: #1a3c6e; font-size: clamp(14px, 2vw + 4px, 17px); margin: 0 0 6px;\">High-Speed Rail &amp; Aviation<\/h3>\n<p style=\"font-size: clamp(13px, 1.8vw + 8px, 15px); color: #374151; line-height: 1.7; margin: 0;\">Older high-speed rail bogies and aviation auxiliary drives were designed with helical bevel gear stages before spiral bevel cutting became universal. Replacement gears for in-service fleets require the original tooth form and helix angle, full material traceability, and non-destructive testing documentation matching the original specification.<\/p>\n<\/div>\n<div style=\"background: #ffffff; border: 1px solid #d1dae8; border-radius: 8px; padding: 16px 18px; box-sizing: border-box;\">\n<div style=\"font-size: 24px; margin-bottom: 6px;\">\u2600<\/div>\n<h3 style=\"color: #1a3c6e; font-size: clamp(14px, 2vw + 4px, 17px); margin: 0 0 6px;\">Solar &amp; Medical Equipment<\/h3>\n<p style=\"font-size: clamp(13px, 1.8vw + 8px, 15px); color: #374151; line-height: 1.7; margin: 0;\">Solar tracker angle drives and medical imaging gantry systems require smooth, quiet angular transmission. Helical bevel gears in stainless or anodised aluminium suit both applications \u2014 the stainless grade for medical sterilisation environments and the aluminium grade for lightweight solar tracker yoke structures where torque is modest but weight is a design constraint.<\/p>\n<\/div>\n<\/div>\n<h2 style=\"color: #1a3c6e; font-size: clamp(22px, 3vw + 10px, 30px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 40px;\">Quality Assurance &amp; Testing<\/h2>\n<div style=\"display: flex; flex-wrap: wrap; gap: 24px; align-items: flex-start; margin: 20px 0;\">\n<div style=\"flex: 0 0 auto; width: 100%; max-width: 380px;\"><img decoding=\"async\" style=\"width: 100%; height: auto; display: block; border-radius: 6px; box-shadow: 0 2px 8px rgba(26,60,110,0.10);\" title=\"helical bevel gear quality assurance inspection and testing at Ever-Power\" src=\"https:\/\/gearrack.top\/wp-content\/uploads\/2026\/07\/Ever-Power-workshop-1.webp\" alt=\"Korea Ever-Power helical bevel gear production quality inspection\" \/><\/div>\n<div style=\"flex: 1 1 280px; min-width: 0;\">\n<p style=\"font-size: clamp(14px, 2vw + 10px, 16px); margin-top: 0;\">Korea Ever-Power applies its full quality assurance sequence to helical bevel gear production. For high-speed rail, aviation, and safety-critical industrial applications where the gear must carry full traceability from raw material to finished part, the complete QA documentation package covers:<\/p>\n<ol style=\"font-size: clamp(14px, 2vw + 10px, 16px); padding-left: 20px; line-height: 1.9; margin-bottom: 0;\">\n<li style=\"margin-bottom: 5px;\"><strong>Chemical composition report<\/strong> \u2014 mill certificate and independent spectral analysis confirming the steel grade before machining. Mandatory for aerospace-adjacent and rail applications.<\/li>\n<li style=\"margin-bottom: 5px;\"><strong>Mechanical performance report<\/strong> \u2014 tensile strength, yield strength, elongation, and impact toughness from test pieces in the same heat as production parts.<\/li>\n<li style=\"margin-bottom: 5px;\"><strong>Ultrasonic test (UT)<\/strong> \u2014 100% UT per EN 10228-3, SA388, or the customer-specified standard, detecting internal voids and inclusions before the gear blank enters the cutting stage.<\/li>\n<li style=\"margin-bottom: 5px;\"><strong>Heat treatment report<\/strong> \u2014 time-temperature curve from the furnace run, retained per batch, confirming the hardening cycle met specification.<\/li>\n<li style=\"margin-bottom: 0;\"><strong>Dimensional inspection report<\/strong> \u2014 CMM measurement of tooth spacing error, pitch cone angle, runout, helix angle, bore, and OD compared against the drawing tolerances before packing.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p style=\"font-size: clamp(14px, 2vw + 10px, 16px); margin-top: 16px;\">Raw material inspection at goods receipt, in-process random dimensional checks during machining, and 100% final inspection before packing are standard at every production stage. Additional tests \u2014 magnetic particle inspection (MPI), dye-penetrant (DP), or metallographic cross-section for case depth verification \u2014 are added at the quotation stage for applications that specify them.<\/p>\n<h2 style=\"color: #1a3c6e; font-size: clamp(22px, 3vw + 10px, 30px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 40px;\">Frequently Asked Questions<\/h2>\n<div style=\"margin-top: 20px;\">\n<div style=\"margin-bottom: 20px;\">\n<p style=\"color: #1a3c6e; font-weight: bold; margin-bottom: 6px; font-size: clamp(15px, 2vw + 10px, 17px);\">What exactly is a helical bevel gear and how does it differ from a spiral bevel gear?<\/p>\n<p style=\"color: #1f2937; line-height: 1.75; margin-top: 0; font-size: clamp(14px, 2vw + 10px, 16px);\">The term &#8220;helical bevel gear&#8221; is used in two ways in the industry, and it is important to be precise. In the strict technical sense \u2014 which Korea Ever-Power follows in this product specification \u2014 a helical bevel gear is a tangential bevel gear whose tooth lines, when the pitch cone is developed into a flat plane, are tangent to a concentric circle rather than passing through the apex. The tooth is straight in the lengthwise direction but oblique to the cone generatrix. A spiral bevel gear has curved teeth \u2014 the tooth line follows a spiral (usually an arc of a circle) across the cone face. The helical form has a lower contact ratio than the spiral form and is produced by a different cutting process. Both improve on straight bevel gears, but spiral bevel gears are now the dominant form in new designs due to their superior performance and availability of dedicated high-efficiency cutting machines.<\/p>\n<\/div>\n<hr style=\"border: none; border-top: 1px dashed #cbd5e1; margin: 16px 0;\" \/>\n<div style=\"margin-bottom: 20px;\">\n<p style=\"color: #1a3c6e; font-weight: bold; margin-bottom: 6px; font-size: clamp(15px, 2vw + 10px, 17px);\">Why does the helical bevel gear pair need equal and opposite helix angles?<\/p>\n<p style=\"color: #1f2937; line-height: 1.75; margin-top: 0; font-size: clamp(14px, 2vw + 10px, 16px);\">For the teeth of the bull gear and pinion to mesh correctly \u2014 with the tooth faces making proper conjugate contact along a line rather than at a point \u2014 the helix angle on one gear must be exactly equal in magnitude and opposite in sign to the helix angle on the other. If both gears carried the same sign helix angle, the tooth lines would not align along the contact zone and the gears would bind rather than mesh smoothly. The equal-and-opposite arrangement also produces the partially self-cancelling axial thrust described in the product overview: each gear pushes its shaft axially in the direction opposite to the other, so the net force on the gearbox housing casing is reduced.<\/p>\n<\/div>\n<hr style=\"border: none; border-top: 1px dashed #cbd5e1; margin: 16px 0;\" \/>\n<div style=\"margin-bottom: 20px;\">\n<p style=\"color: #1a3c6e; font-weight: bold; margin-bottom: 6px; font-size: clamp(15px, 2vw + 10px, 17px);\">Can you manufacture a helical bevel gear to replace one in existing machinery without a drawing?<\/p>\n<p style=\"color: #1f2937; line-height: 1.75; margin-top: 0; font-size: clamp(14px, 2vw + 10px, 16px);\">Yes. Korea Ever-Power specialises in reverse engineering from worn or damaged samples. For a helical bevel gear replacement, send us the gear (or both gears of the pair if possible), along with your measurements of the outer diameter, tooth count, bore diameter, face width, and hub dimensions. Our engineering team measures the helix angle directly from the sample, calculates the module, and prepares a full production drawing for your approval before cutting begins. This approach is more reliable than estimating the helix angle from dimensions alone, because even small errors in helix angle produce poor tooth contact in the mated pair.<\/p>\n<\/div>\n<hr style=\"border: none; border-top: 1px dashed #cbd5e1; margin: 16px 0;\" \/>\n<div style=\"margin-bottom: 20px;\">\n<p style=\"color: #1a3c6e; font-weight: bold; margin-bottom: 6px; font-size: clamp(15px, 2vw + 10px, 17px);\">Which materials are available for helical bevel gears used in food processing or pharmaceutical environments?<\/p>\n<p style=\"color: #1f2937; line-height: 1.75; margin-top: 0; font-size: clamp(14px, 2vw + 10px, 16px);\">316 stainless steel is the standard choice for food-contact and pharmaceutical applications \u2014 its molybdenum content provides chloride corrosion resistance suitable for wash-down environments and sterilisation cycles. For gears that must operate in contact with potable water or direct food contact, passivation after machining maximises the passive oxide layer and we supply a passivation certificate with the delivery. POM (acetal) is an alternative for lightly loaded, non-lubricated applications in food-contact environments where metallic contamination from wear particles must be avoided \u2014 POM does not corrode and produces no metallic wear debris.<\/p>\n<\/div>\n<hr style=\"border: none; border-top: 1px dashed #cbd5e1; margin: 16px 0;\" \/>\n<div style=\"margin-bottom: 20px;\">\n<p style=\"color: #1a3c6e; font-weight: bold; margin-bottom: 6px; font-size: clamp(15px, 2vw + 10px, 17px);\">Is UT inspection standard or optional on helical bevel gear orders?<\/p>\n<p style=\"color: #1f2937; line-height: 1.75; margin-top: 0; font-size: clamp(14px, 2vw + 10px, 16px);\">Ultrasonic testing is a selectable option that can be added to any order at the quotation stage. It is routinely specified for safety-critical, rail, and aerospace-adjacent applications. For standard industrial replacement gears in machinery operating well within rated loads, the chemical composition report, mechanical performance report, and dimensional inspection report are typically sufficient. If your application or procurement specification requires UT, state the applicable standard (EN 10228-3, SA388, or your own standard) in the enquiry and we will include it in the QA scope and confirm the effect on lead time.<\/p>\n<\/div>\n<hr style=\"border: none; border-top: 1px dashed #cbd5e1; margin: 16px 0;\" \/>\n<div style=\"margin-bottom: 4px;\">\n<p style=\"color: #1a3c6e; font-weight: bold; margin-bottom: 6px; font-size: clamp(15px, 2vw + 10px, 17px);\">Should I specify a helical bevel gear for a new design, or use a spiral bevel gear instead?<\/p>\n<p style=\"color: #1f2937; line-height: 1.75; margin-top: 0; font-size: clamp(14px, 2vw + 10px, 16px);\">For most new designs, a spiral bevel gear is the practical recommendation \u2014 it offers higher contact ratio, lower noise, greater load capacity, and is produced more efficiently by modern gear cutting machines. Helical bevel gears are the correct specification when you are replacing gears in existing machinery that was designed with helical bevel geometry, or when a specific design constraint \u2014 such as the partially self-cancelling axial thrust or the precise tooth geometry required by the mating housing \u2014 makes this tooth form necessary. If you are designing from scratch and have no legacy constraint, the spiral bevel gear will typically deliver better performance, better supply chain availability, and lower cost at volume. <a style=\"color: #1a3c6e; text-decoration: underline;\" href=\"https:\/\/gearrack.top\/fr\/contact\/\">Contact our engineering team<\/a> with your application data and we will advise on the most suitable bevel gear type for your specific requirements.<\/p>\n<\/div>\n<\/div>\n<h2 style=\"color: #1a3c6e; font-size: clamp(22px, 3vw + 10px, 30px); border-bottom: 3px solid #e8a020; padding-bottom: 10px; margin-top: 40px;\">Customer Reviews<\/h2>\n<div style=\"display: flex; flex-wrap: wrap; gap: 14px; margin-top: 20px;\">\n<div style=\"flex: 1 1 100%; box-sizing: border-box; padding: 20px 22px; background: #f0f6ff; border-radius: 8px; border-left: 4px solid #1a3c6e;\">\n<p style=\"font-style: italic; color: #374151; line-height: 1.75; font-size: clamp(14px, 2vw + 10px, 16px); margin: 0 0 10px;\">&#8220;We maintain a fleet of older milling machines that use helical bevel gear sets in the bevel drive head. The original German manufacturer no longer supplies replacement parts. Ever-Power reverse-engineered the helix angle from our worn sample, produced the replacement pair in 42CrMo through-hardened, and delivered with a full dimensional report. Both gears fitted the original housing without adjustment.&#8221;<\/p>\n<p style=\"margin: 0; font-size: clamp(13px, 1.8vw + 8px, 15px);\"><strong style=\"color: #1a3c6e;\">Jo Hyun-taek<\/strong> \u00a0|\u00a0 Machine Shop Manager, Gyeonggi Precision Machining Centre \u00a0\u00b7\u00a0 <em style=\"color: #6b7280;\">Q2 2025<\/em><\/p>\n<\/div>\n<div style=\"flex: 1 1 100%; box-sizing: border-box; padding: 20px 22px; background: #ffffff; border-radius: 8px; border: 1px solid #d1dae8;\">\n<p style=\"font-style: italic; color: #374151; line-height: 1.75; font-size: clamp(14px, 2vw + 10px, 16px); margin: 0 0 10px;\">&#8220;We source <a style=\"color: #1a3c6e; text-decoration: underline;\" href=\"https:\/\/gearrack.top\/fr\/product-category\/bevel-gears\/\">helical bevel gears<\/a> in M4 316L stainless for a pharmaceutical tablet press angle drive. Passivation certificate is required by our GMP audit. Ever-Power included the passivation cert with the delivery documentation. Three annual replacement cycles completed with consistent dimensional conformance on each delivery.&#8221;<\/p>\n<p style=\"margin: 0; font-size: clamp(13px, 1.8vw + 8px, 15px);\"><strong style=\"color: #1a3c6e;\">Park Mi-ra<\/strong> \u00a0|\u00a0 Engineering Buyer, Chungbuk Pharma Equipment \u00a0\u00b7\u00a0 <em style=\"color: #6b7280;\">Q1 2026<\/em><\/p>\n<\/div>\n<div style=\"flex: 1 1 100%; box-sizing: border-box; padding: 20px 22px; background: #f0f6ff; border-radius: 8px; border-left: 4px solid #1a3c6e;\">\n<p style=\"font-style: italic; color: #374151; line-height: 1.75; font-size: clamp(14px, 2vw + 10px, 16px); margin: 0 0 10px;\">&#8220;We needed helical bevel replacement gears for a solar tracker yaw drive originally designed with this tooth form. The aluminium alloy versions from Ever-Power matched the helix angle from our sample, came with anodising as specified, and the pair runs as quietly as the original set. Weight was critical for the tracker arm structure and the aluminium saved 2.1 kg per drive unit versus steel.&#8221;<\/p>\n<p style=\"margin: 0; font-size: clamp(13px, 1.8vw + 8px, 15px);\"><strong style=\"color: #1a3c6e;\">Shin Dong-min<\/strong> \u00a0|\u00a0 Mechanical Engineer, Jeollanam Solar Systems \u00a0\u00b7\u00a0 <em style=\"color: #6b7280;\">Q3 2025<\/em><\/p>\n<\/div>\n<div style=\"flex: 1 1 100%; box-sizing: border-box; padding: 20px 22px; background: #ffffff; border-radius: 8px; border: 1px solid #d1dae8;\">\n<p style=\"font-style: italic; color: #374151; line-height: 1.75; font-size: clamp(14px, 2vw + 10px, 16px); margin: 0 0 10px;\">&#8220;Our semi-conductor handling equipment uses M3 helical bevel gears in an aluminium alloy. The helix angle in the original design was not documented \u2014 we sent Ever-Power both gears of the pair and they measured the helix angle directly. The replacement pair was produced to the measured geometry and runs without any detectable vibration step change in the wafer position sensor output.&#8221;<\/p>\n<p style=\"margin: 0; font-size: clamp(13px, 1.8vw + 8px, 15px);\"><strong style=\"color: #1a3c6e;\">Lim Jae-young<\/strong> \u00a0|\u00a0 Equipment Engineer, Suwon Semi-Conductor Systems \u00a0\u00b7\u00a0 <em style=\"color: #6b7280;\">Q4 2025<\/em><\/p>\n<\/div>\n<div style=\"flex: 1 1 100%; box-sizing: border-box; padding: 20px 22px; background: #f0f6ff; border-radius: 8px; border-left: 4px solid #1a3c6e;\">\n<p style=\"font-style: italic; color: #374151; line-height: 1.75; font-size: clamp(14px, 2vw + 10px, 16px); margin: 0 0 10px;\">&#8220;We specified helical bevel gears for an automatic packaging machine angle drive. The original machine supplier had discontinued support. Ever-Power produced from our worn sample in C45 DIN 8 grade, with the UT report required by our plant maintenance standard. Lead time was three weeks \u2014 faster than the alternatives we evaluated \u2014 and the documentation package satisfied our maintenance audit requirements.&#8221;<\/p>\n<p style=\"margin: 0; font-size: clamp(13px, 1.8vw + 8px, 15px);\"><strong style=\"color: #1a3c6e;\">Kim Bo-ram<\/strong> \u00a0|\u00a0 Maintenance Engineer, Daejeon Food Packaging Plant \u00a0\u00b7\u00a0 <em style=\"color: #6b7280;\">Q2 2026<\/em><\/p>\n<\/div>\n<\/div>\n<div style=\"background: #1a3c6e; color: #ffffff; padding: 28px 32px; border-radius: 8px; margin-top: 40px; text-align: center;\">\n<h3 style=\"color: #ffffff; margin-top: 0; font-size: clamp(18px, 2.4vw + 8px, 22px);\">Request a Quotation for Helical Bevel Gears<\/h3>\n<p style=\"color: #dbeafe; line-height: 1.75; margin: 10px 0 16px; font-size: clamp(14px, 2vw + 10px, 16px);\">Send us your drawing, worn sample gear, or key dimensions \u2014 module, tooth count, helix angle, bore, and material. If the helix angle is unknown, send both gears of the pair and we will measure it directly. Our engineering team returns a feasibility review and price within two working days.<\/p>\n<p><a style=\"display: inline-block; background: #e8a020; color: #ffffff; font-weight: bold; font-size: clamp(14px, 2vw + 10px, 16px); padding: 12px 28px; border-radius: 5px; text-decoration: none; letter-spacing: 0.3px;\" href=\"https:\/\/gearrack.top\/fr\/contact\/\">Get a Quote Now<\/a><\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Korea Ever-Power helical bevel gears feature tooth lines that are tangent to a concentric circle on the pitch cone development \u2014 also called tangential bevel gears. The oblique tooth angle increases the contact ratio beyond a straight bevel gear, reducing impact load and noise during high-speed operation while allowing a smaller tooth count for a given transmission ratio. Available in modules M3 through M12 and beyond, in carbon steel, alloy steel, stainless steel, brass, copper, aluminium, and POM. Multi-standard coverage: ISO, DIN, ANSI, JIS, BS. Full QA documentation with every order.<\/p>","protected":false},"featured_media":1370,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[4556],"product_tag":[],"class_list":["post-1424","product","type-product","status-publish","has-post-thumbnail","product_cat-bevel-gears","pa_editor-cxm","first","instock","product-type-simple"],"_links":{"self":[{"href":"https:\/\/gearrack.top\/fr\/wp-json\/wp\/v2\/product\/1424","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gearrack.top\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/gearrack.top\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/gearrack.top\/fr\/wp-json\/wp\/v2\/comments?post=1424"}],"wp:attachment":[{"href":"https:\/\/gearrack.top\/fr\/wp-json\/wp\/v2\/media?parent=1424"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/gearrack.top\/fr\/wp-json\/wp\/v2\/product_brand?post=1424"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/gearrack.top\/fr\/wp-json\/wp\/v2\/product_cat?post=1424"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/gearrack.top\/fr\/wp-json\/wp\/v2\/product_tag?post=1424"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}