Compared with finished gear products, this item is positioned as a forging blank prepared for downstream machining. It is suitable for ring gears, internal gears, and transmission components requiring controlled grain flow and reliable dimensional stock. The product can be produced as an open-die or rolled ring depending on size and section, helping customers reduce machining waste while preserving the strength advantages of forged material. In practical procurement, buyers often request this type of ring blank with clearly defined outside diameter, inside diameter, section size, ultrasonic testing level, and machining allowance for tooth cutting. For large-module gears, control of ring roundness, section consistency, and heat-treatment response is especially important because later hobbing or gear milling will directly depend on the stability of the forged blank. According to project needs, additional services such as rough turning, normalizing, quenching and tempering, and third-party inspection coordination can also be arranged before shipment.
| Parameter | Description |
|---|---|
| Key Features | Suitable for external/internal gear cutting, cross-section uniformity, microstructure stability |
| Typical Materials | 42CrMo4, 34CrNiMo6, 20CrMnTi, per drawing |
| Size Range | OD 300~6000mm / Height ≤1000mm / Unit Weight ≤25 tons |
| Typical Applications | Reducer gear rings, industrial gearbox rings, construction machinery slewing rings |
| Supply Condition | As-forged / Normalized & tempered / Rough machined (ID/OD/faces) |
| Inspection & Docs | UT per specified level, hardness uniformity, dimensional report, traceability list, EN 10204 3.1 |


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