Custom External Spur Gear Manufacturer | OEM Forged Gears
Table of Contents
Precision Forged & CNC Machined External Spur Gears
External spur gears are widely used in industrial transmission systems where efficient power transfer, stable speed ratios, and long service life are required. At Weforging, we manufacture custom external spur gears based on customer drawings and technical specifications, combining closed die forging, precision CNC machining, heat treatment, and comprehensive inspection under one production system.
Whether the project requires a prototype, low-volume replacement parts, or long-term production, our engineering team works closely with customers to optimize manufacturability, material selection, and production efficiency while maintaining consistent quality throughout every batch.
Technical Specifications
| Item | Capability |
|---|---|
| Product Type | External Spur Gear |
| Manufacturing Method | Closed Die Forging + CNC Machining |
| Module Range | Custom |
| Outside Diameter | Up to 1200 mm |
| Face Width | Custom |
| Materials | Carbon Steel, Alloy Steel, Stainless Steel |
| Heat Treatment | Carburizing, Nitriding, Q&T, Induction Hardening, Normalizing |
| Gear Accuracy | DIN / ISO / AGMA According to Drawing |
| Surface Finish | Machined, Ground, Polished |
| Inspection | CMM, Gear Measurement, UT, MT, Hardness Testing |
| Documentation | MTC, Inspection Report, Material Traceability |
| Production Volume | Prototype to Mass Production |
Available Manufacturing Options
External spur gears can be manufactured in a variety of configurations to meet different installation methods, load requirements, and operating conditions. All dimensions, materials, and specifications can be customized according to customer drawings.
| Manufacturing Option | Description |
|---|---|
| Gear Blank | Forged or machined blanks supplied for customer gear cutting or finishing |
| Solid Spur Gear | Standard one-piece gear design for general transmission applications |
| Flanged Spur Gear | Integrated flange design for simplified installation and positioning |
| Hub Spur Gear | Extended hub structure for shaft mounting and higher torque transmission |
| Large Diameter Spur Gear | Suitable for heavy-duty industrial equipment and large transmission systems |
| Ground Spur Gear | Improved tooth accuracy, smoother operation, and reduced noise |
| Heat Treated Spur Gear | Enhanced wear resistance, strength, and fatigue performance |
Additional configurations can be manufactured according to customer drawings and technical requirements.
Materials & Heat Treatment
Selecting the right material is essential for achieving the required strength, wear resistance, and service life of an external spur gear. Material and heat treatment are determined by the operating load, working environment, and performance requirements of each application.
Common materials include:
- 20CrMnTi
- 42CrMo
- 40Cr
- AISI 4140
- AISI 4340
- 8620 Alloy Steel
- Carbon Steel
- Stainless Steel
Available heat treatment options:
- Carburizing
- Quenching & Tempering
- Nitriding
- Induction Hardening
- Normalizing
If material or heat treatment has not yet been specified, our engineering team can recommend a suitable solution based on your application and performance requirements.
Manufacturing Process & Capabilities
Every external spur gear is manufactured through a controlled process to ensure consistent quality, dimensional accuracy, and reliable performance.
- Closed Die Forging – Produces dense, high-strength gear blanks.
- CNC Machining – Machines critical dimensions before gear cutting.
- Gear Hobbing / Shaping – Generates accurate tooth profiles to drawing requirements.
- Heat Treatment – Improves hardness, wear resistance, and fatigue life.
- Gear Grinding (Optional) – Provides higher tooth accuracy and smoother operation.
- Final Inspection – Verifies dimensions, hardness, and quality before shipment.
From forging to final inspection, all key processes are managed in-house to ensure consistent quality and reliable delivery.
Precision Inspection & Quality Assurance
Every external spur gear is inspected before shipment to ensure compliance with customer drawings and quality requirements.
Inspection capabilities include:
- CMM Inspection – Accurate dimensional verification.
- Gear Measurement – Tooth profile, lead, and runout inspection.
- Hardness Testing – Confirms heat treatment performance.
- UT & MT Testing – Detects internal and surface defects when required.
- Material Traceability – MTC, inspection reports, and production records available.
- 22°C Constant-Temperature Inspection Room – Ensures reliable measurement for precision-machined components.
Why Choose Weforging
Choosing the right gear manufacturer involves more than production capacity. Stable quality, process control, engineering support, and delivery reliability are equally important for OEM projects.
Weforging combines forging, machining, heat treatment, and inspection into one integrated manufacturing system to improve consistency and simplify supplier management.
Our advantages include:
- Closed Die Forging & CNC Machining Under One Roof
- Engineering Review Before Production
- OEM Manufacturing According to Customer Drawings
- Flexible Production from Prototype to Mass Production
- Complete Material Traceability
- 22°C Constant-Temperature Inspection Room
- CMM, UT & MT Inspection Available
- ISO 9001 Quality Management System
- Stable Delivery for Long-Term OEM Programs
Request a Custom External Spur Gear Quote
Looking for a reliable External Spur Gear Manufacturer for your next OEM project?
Share your drawings or technical requirements with our engineering team. We’ll review the design, recommend suitable manufacturing solutions, and provide a competitive quotation based on your application, quality requirements, and production volume.
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