Precision Input Gear Forgings
Weforging delivers precision input gear forgings that meet the demanding standards of modern power-transmission systems.By combining closed-die forging, CNC machining, and controlled heat treatment, our input gear components achieve superior mechanical strength, dimensional accuracy, and fatigue resistance.These forged gear parts are ideal for heavy-duty applications in automotive, construction, mining, and renewable-energy equipment, where reliability and precision are critical.
Material Selection and Forging Process
Our precision input gear forgings are produced from carefully selected alloy steels such as SAE 8620H, 42CrMo, and 4140, ensuring excellent hardenability and core strength.Each batch of raw material undergoes spectrometer analysis before forging to guarantee chemical consistency.
We adopt closed-die forging to achieve near-net-shape geometry, ensuring dense internal grain flow and eliminating casting defects like porosity or shrinkage.After forging, components are precision-machined using Mazak CNC centers, followed by quenching and tempering to reach hardness levels between HRC 30–45, balancing toughness and wear resistance.
Key Advantages of Weforging Input Gear Forgings
High Strength & Durability — Up to 20% higher tensile strength compared to cast gears.
Enhanced Fatigue Resistance — Refined microstructure supports long-term reliability under cyclic loads.
Dimensional Precision — ±0.2 mm tolerance, optimized for accurate assembly and smooth rotation.
Cost Efficiency — Near-net forging reduces machining allowance and material waste.
Full Traceability — Every forging carries unique heat and batch identification for complete quality tracking.
Customization Ready — Available in various materials, splines, and tooth profiles per drawing requirements.
Technical Specifications
| Parameter | Specification | Description |
|---|---|---|
| Material | SAE 8620H / 42CrMo / 4140 | High-strength alloy steels for forging |
| Process | Closed-die forging + CNC machining + heat treatment | Complete in-house production |
| Diameter Range | 20 – 500 mm | Customizable per drawing |
| Hardness Range | HRC 30 – 45 | Controlled quenching & tempering |
| Dimensional Tolerance | ± 0.2 mm | Ensures accurate fit and balance |
| Surface Finish | Ra ≤ 3.2 µm | After precision machining |
| Testing Standards | UT / MPI / Hardness mapping / CMM inspection | 100% inspection before shipment |
Applications and Industry Use Cases
Our forged input gears play a vital role in a wide range of industries:
Automotive & Transmission Systems
Input shafts and transmission gears for passenger vehicles and trucks
Differential and transfer case gear assemblies
Construction & Heavy Equipment
Excavator and bulldozer gearbox components
Loader and crane power-train assemblies
Energy & Industrial Machinery
Wind turbine and hydro generator drive gears
Pumps, compressors, and heavy conveyor systems
Each component is designed for high torque transfer, shock absorption, and long operational life, even under harsh working environments.
Quality Control and Inspection
Weforging implements a multi-stage quality assurance system to ensure every precision input gear forging meets specification:
Raw Material Testing — Chemical composition verified via spectrometer and hardness checks.
In-Process Control — Dimensional and grain-flow inspection during forging and machining.
Non-Destructive Testing (NDT) — 100% ultrasonic (UT) and magnetic particle (MPI) inspection to ensure flaw-free structure.
Final Verification — CMM measurement, hardness mapping, and surface roughness evaluation before packaging.
Our manufacturing and inspection processes are fully certified under ISO 9001:2015, and third-party inspection (SGS, BV) can be arranged upon request.
Request a Quote or Technical Consultation
Partner with Weforging, your trusted custom gear forging manufacturer.
Upload your 2D or 3D drawings (PDF / DWG / STEP / IGES) and specify material, quantity, and technical requirements.
Our engineering team will provide a DFM (Design for Manufacturing) review and a quotation within 24 hours.
Contact us today to discuss your next precision input gear forging project and discover how Weforging can optimize your cost, performance, and lead time.
