{"product_id":"external-spline-output-shaft","title":"External Spline Output Shaft","description":"\u003ch2\u003eExternal Spline Output Shaft Manufacturing\u003c\/h2\u003e\n\u003cp\u003eThis external spline output shaft is manufactured to customer drawings for power-transmission assemblies. The cold-forged spline transfers torque to a mating component, while the machined diameters and datum features control how the shaft locates and runs in the assembly. Each project is reviewed against its released drawing instead of a fixed catalogue specification.\u003c\/p\u003e\n\u003ch3\u003eVerified component specification\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Medium-carbon alloy steel with specified tensile strength of 780–930 N\/mm².\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpline forming:\u003c\/strong\u003e Cold forging for the external spline.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachining:\u003c\/strong\u003e Turning and milling for the specified shaft features.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat treatment:\u003c\/strong\u003e Induction hardening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e HRC 50–55.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensional control:\u003c\/strong\u003e Outer-diameter tolerance within 10 μm and inner-diameter tolerance within 8 μm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManufacturing process\u003c\/h3\u003e\n\u003cp\u003eProcess planning starts with the drawing, material standard, spline definition, datum system and critical fit requirements. The external spline is cold forged, after which turning and milling establish the required diameters, shoulders, faces and other machined geometry. Induction hardening is applied according to the released heat-treatment requirement. The final sequence and machining allowances are confirmed from the drawing so that the hardened area, spline relationship and controlled diameters can be inspected as one part program.\u003c\/p\u003e\n\u003ch3\u003eHeat treatment and functional control\u003c\/h3\u003e\n\u003cp\u003eInduction hardening provides the specified HRC 50–55 hardness for this component. The customer should identify the required hardened zone, transition area and any features that must be protected from treatment. Jinhua Machinery reviews these requirements together with material condition, distortion risk and final dimensional inspection before quotation.\u003c\/p\u003e\n\u003ch3\u003eInspection planning\u003c\/h3\u003e\n\u003cp\u003eFinal inspection follows the approved drawing and can include the external spline, outside and inside diameters, datums, runout or related geometric controls, hardness and surface requirements where specified. Required sampling, dimensional reports, material certificates and heat-treatment records should be included in the inquiry. Our broader approach is described on the \u003ca href=\"\/pages\/quality-inspection\"\u003equality inspection and process-control\u003c\/a\u003e page.\u003c\/p\u003e\n\u003ch3\u003eApplications and RFQ requirements\u003c\/h3\u003e\n\u003cp\u003eThis type of output shaft is reviewed for industrial and automotive power-transmission assemblies that require a forged spline and controlled shaft fits. Final application approval remains with the customer’s design and validation process.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2D drawing and 3D model, if available\u003c\/li\u003e\n\u003cli\u003eMaterial grade, tensile-strength requirement and applicable standard\u003c\/li\u003e\n\u003cli\u003eSpline data, datums and critical tolerances\u003c\/li\u003e\n\u003cli\u003eInduction-hardening zone and hardness requirement\u003c\/li\u003e\n\u003cli\u003ePrototype quantity, annual demand and delivery target\u003c\/li\u003e\n\u003cli\u003eInspection reports, certificates and traceability requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eExplore related \u003ca href=\"\/pages\/spline-shafts\"\u003espline shaft manufacturing capabilities\u003c\/a\u003e, or \u003ca href=\"\/pages\/contact\"\u003esend the project details to Jinhua Machinery\u003c\/a\u003e for review.\u003c\/p\u003e","brand":"Jinhua Machinery","offers":[{"title":"Default Title","offer_id":48110183842007,"sku":"(Overall Length：80~150mm Diameter：φ10~φ45)","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0797\/1137\/1479\/files\/01_91d6526a-d4b7-444b-9aed-35cf8e7b7304.jpg?v=1781504273","url":"https:\/\/jinhuamach.com\/products\/external-spline-output-shaft","provider":"Jinhua Machinery","version":"1.0","type":"link"}