{"id":999,"date":"2026-04-29T08:53:55","date_gmt":"2026-04-29T08:53:55","guid":{"rendered":"https:\/\/splined-shaft.net\/product\/involute-splined-shafts\/"},"modified":"2026-04-29T08:53:56","modified_gmt":"2026-04-29T08:53:56","slug":"involute-splined-shafts","status":"publish","type":"product","link":"https:\/\/splined-shaft.net\/hi\/product\/involute-splined-shafts\/","title":{"rendered":"Involute Splined Shafts"},"content":{"rendered":"
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Involute Splined Shafts \u2013 Precision Power Transmission for Australian OEMs<\/h2>\n

Sourcing involute splined shafts in Australia should not mean compromising on tolerance, hardness or lead time. Ever-power manufactures custom involute splined shafts to DIN 5480, ANSI B92.1, ISO 4156 and JIS standards for automotive driveline assemblers, agricultural OEMs, mining contractors and industrial gearbox builders operating across Queensland, New South Wales, Victoria, South Australia and Western Australia.<\/p>\n

Every shaft leaves our facility with a documented inspection report, traceable material certificate and dimensional data verified on Mitutoyo CMM equipment \u2013 the same level of evidence your QA team would demand from a domestic supplier, delivered DDP to your loading dock.<\/p>\n

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\"Custom<\/div>\n
\"Hardened<\/div>\n<\/div>\n

Why Involute Tooth Geometry Outperforms Alternatives<\/h2>\n
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Self-Centring Action<\/h3>\n

The 30\u00b0, 37.5\u00b0 or 45\u00b0 pressure angle generates radial forces that automatically centre the mating hub, reducing vibration and eccentric wear in high-RPM gearbox shafts.<\/p>\n<\/div>\n

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Higher Torque Density<\/h3>\n

Curved involute flanks distribute contact pressure more evenly than straight-sided teeth, allowing 25\u201340 percent more torque transmission at the same shaft diameter.<\/p>\n<\/div>\n

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Manufacturing Tolerance<\/h3>\n

Modular hobbing tools and CNC grinding deliver repeatable DIN class 5h, 6h or 7H tolerances, simplifying field replacement and global interchangeability.<\/p>\n<\/div>\n

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Fatigue Resistance<\/h3>\n

Smooth root fillets reduce stress concentration, extending fatigue life by up to 3\u00d7 over straight-sided splines under reversing load conditions typical in mobile equipment.<\/p>\n<\/div>\n<\/div>\n

Technical Specifications & Standard Compliance<\/h2>\n
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Parameter<\/th>\nSpecification Range<\/th>\nNotes<\/th>\n<\/tr>\n<\/thead>\n
Standards Supported<\/td>\nDIN 5480, ANSI B92.1, ISO 4156, JIS D 2001, GB\/T 3478<\/td>\nDrawing or sample-based<\/td>\n<\/tr>\n
Pressure Angle<\/td>\n30\u00b0, 37.5\u00b0, 45\u00b0<\/td>\n30\u00b0 most common in automotive<\/td>\n<\/tr>\n
Module Range<\/td>\n0.5 mm to 10 mm<\/td>\nDiametral pitch 2.5 to 48 DP<\/td>\n<\/tr>\n
Outer Diameter<\/td>\n\u00d88 mm to \u00d8600 mm<\/td>\nLarger on request<\/td>\n<\/tr>\n
Length Capacity<\/td>\nUp to 6,000 mm<\/td>\nMulti-station turning<\/td>\n<\/tr>\n
Tolerance Class<\/td>\n5h, 6h, 7h, 9H, 11H<\/td>\nSide fit \/ major fit \/ minor fit<\/td>\n<\/tr>\n
Material Options<\/td>\n42CrMo4, 20CrMnTi, 4140, 4340, 8620, 17CrNiMo6, 1045<\/td>\nEN, AISI, JIS equivalents available<\/td>\n<\/tr>\n
Surface Hardness<\/td>\nHRC 55\u201362<\/td>\nCarburised or induction hardened<\/td>\n<\/tr>\n
Surface Finish<\/td>\nRa 0.4 to Ra 1.6 \u00b5m<\/td>\nGround spline flanks<\/td>\n<\/tr>\n
Heat Treatment<\/td>\nCarburising, induction, nitriding, Q&T<\/td>\nCase depth 0.6\u20132.5 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Manufacturing Capabilities at Ever-power<\/h2>\n

Our 18,000 m\u00b2 production facility integrates forging, CNC turning, hobbing, broaching, heat treatment and grinding under one roof. This vertical integration removes the inter-supplier handoffs that cause schedule slippage and quality drift in fragmented supply chains.<\/p>\n

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Hobbing & Shaping<\/h3>\n

Liebherr LC 180 and Mitsubishi GE15A CNC hobbing machines cut involute spline forms with AGMA Q10 quality directly off the machine, suitable for medium-load applications without grinding.<\/p>\n<\/div>\n

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CNC Spline Grinding<\/h3>\n

For aerospace and motorsport-grade shafts, our Reishauer-style grinding line achieves AGMA Q12+ with controlled lead crowning and root profile modification.<\/p>\n<\/div>\n

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In-House Heat Treatment<\/h3>\n

Sealed-quench carburising, induction hardening and gas nitriding lines with documented case depth, core hardness and metallurgical structure reports for every batch.<\/p>\n<\/div>\n<\/div>\n