Precision Forged and CNC Machined Internal Ring Gear
The internal ring gear plays a vital role in planetary and power transmission systems, delivering smooth and efficient torque transfer in compact, high-performance assemblies. At Weforging, every ring gear is manufactured through an integrated forging + CNC machining + testing process to achieve outstanding strength, dimensional precision, and durability. Our ISO-certified production system combines advanced forging technology with high-accuracy internal gear cutting, ensuring exceptional and consistent product quality.
What Is an Internal Ring Gear
An internal ring gear is a gear with teeth formed on the inner circumference. It engages with a sun gear and multiple planet gears to create a planetary gear system, which provides compact, high-torque power transmission. At Weforging, every internal gear is engineered with optimized tooth geometry and precise alignment to ensure smooth motion, low noise, and excellent efficiency. These gears are ideal for systems requiring strong torque output and accurate power distribution.
Manufacturing Process
Weforging follows a fully controlled manufacturing process that ensures precision and strength at every step:
Material Selection – Premium alloy or carbon steel such as 42CrMo, 8620, or 20CrMnTi.
Closed Die Forging – Forms dense and high-strength blanks with refined grain flow.
CNC Turning and Boring – Maintains excellent concentricity and precise inner diameters.
Gear Shaping or Hobbing – Cuts accurate internal teeth with fine tooth geometry.
Heat Treatment – Carburizing and quenching to increase surface hardness and durability.
Testing & Inspection – CMM checks, hardness verification, and tooth-contact analysis for accuracy and consistency.
Key Advantages
Weforging’s internal ring gears combine high durability, precision, and balance for reliable transmission performance. The forged structure ensures excellent strength and consistent density, maintaining long-term stability. Advanced CNC machining provides smooth surfaces and precise alignment for efficient operation. The optimized tooth profile enhances torque transfer and motion smoothness, while controlled heat treatment improves surface hardness and durability. Each gear can be customized in material, size, and geometry to meet diverse OEM and industrial requirements with outstanding consistency and reliability.
Applications by Industry
Weforging’s CNC machined internal ring gears are widely applied in power transmission and high-performance mechanical systems. Moreover, they play a crucial role across multiple industries that demand precision, durability, and consistent torque delivery.
Planetary Gearboxes – Enable efficient torque conversion in automation and motion systems.
Hydraulic Drives – Support smooth, synchronized operation of cylinders and actuators.
Construction & Mining Equipment – Provide high load capacity and durability.
Wind Power Systems – Facilitate torque transfer in turbine gear mechanisms.
Industrial Machinery – Maintain precision and stability in robotics and machine tools.
Inquiry and Customization
Weforging provides custom internal ring gears tailored to your application needs.
Our engineering team supports design, material selection, and testing to ensure optimal performance in every environment.
➡ Contact us today to request a quotation or discuss OEM gear solutions.
