Forged Steel Gear Shaft with Integrated Gear & Splined End
A forged gear shaft is a high-strength transmission component that integrates a shaft and gear into a single structure for efficient torque transfer and precise power transmission. Widely used in gearboxes and heavy-duty drive systems, this design supports stable operation under demanding conditions.
Produced through hot forging and CNC machining, Weforging’s forged steel gear shafts feature optimized grain flow, accurate gear profiles, and consistent dimensional control. Each gear shaft with integrated gear is manufactured to meet custom requirements across industrial and mobile equipment applications.
Manufacturing Process
Weforging produces forged gear shafts through a controlled manufacturing route:
Hot forging to form the shaft and gear blank, creating continuous grain flow along load paths
Rough machining to establish reference surfaces and concentricity
CNC gear cutting (hobbing or shaping) for accurate tooth geometry
Spline machining at the shaft end for precise coupling with mating components
Heat treatment such as quenching and tempering, based on load and service requirements
Final CNC machining and inspection to ensure dimensional consistency and surface quality
This integrated process supports stable geometry, repeatable quality, and suitability for series production.
Material Options & Specifications
Forged gear shafts are typically produced from carbon steel or alloy steel grades selected according to torque level and operating conditions.
Common material options include:
Carbon Steel: C45 / AISI 1045
Alloy Steel: AISI 4140, AISI 4340, EN 42CrMo4
Custom grades available per drawing or standard requirement
Typical customizable parameters include shaft diameter, overall length, gear module, number of teeth, spline type, heat treatment condition, and machining tolerance.
Performance Characteristics
Thanks to its forged structure and integrated design, the forged gear shaft offers:
Stable torque transmission through a solid forged shaft body
Accurate gear meshing with controlled tooth geometry
Consistent dimensional alignment between shaft and gear
Suitability for continuous or heavy-duty operation
Long service stability supported by controlled material flow
These characteristics make forged gear shafts suitable for demanding transmission applications.
Typical Applications
Industrial Gearboxes: transmit torque and maintain precise gear engagement in continuous-duty transmission systems
Construction Machinery: support drive and swing mechanisms in excavators, loaders, and cranes
Mining & Material Handling Equipment: deliver stable power transfer under heavy load conditions
Agricultural Machinery: enable reliable drivetrain performance in tractors and harvesting equipment
Off-Highway Vehicles: integrate shaft and gear functions within compact transmission layouts
Conclusion & Inquiry
Weforging’s forged gear shafts combine structural strength, precise machining, and flexible customization to support reliable power transmission across industrial applications. Whether supplied as semi-finished forgings or fully machined components, each gear shaft is produced to meet drawing-based requirements and stable production standards.
📩 Send us your drawings or specifications for a free technical review and quotation. Our engineering team will respond within 24 hours.
