TDR255 Series High Precision Planetary Gearbox Helical Gear Reducer is a type of gearbox that is used to provide high precision and low backlash motion control in various industrial applications. It is also known as a servo motor planetary gearbox or low backlash planetary gearbox. The product is shown in the image below:
The basic construction of High Precision Planetary Gearbox is shown in the image below:
The sun gear is located at the center of the planetary gearbox and is usually connected to the input shaft or fixed to the housing as a stationary component.
The planet gears rotate around the sun gear and are supported and maintained in their relative positions by the planet carrier. Each planet gear meshes with both the sun gear and the ring gear, and when power is input, they collectively bear and distribute the load.
The planet carrier is a structure with multiple planet gear shaft holes. It carries the planet gears and allows them to rotate relative to the sun gear. The planet carrier can be used as an output element or connected to another shaft to transmit or receive torque.
The ring gear/annulus is a large diameter ring-shaped gear fixed inside the housing with teeth on both its inner and outer surfaces that meshes with the planet gears. In some applications, the ring gear can also be used as an input or output end.
The bearings in the high precision planetary gearbox support the input shaft, output shaft and planet carrier, ensuring stable rotation and smooth operation between all components.
The housing is the external frame of the entire gearbox. It protects the internal components from external environmental effects and provides installation interfaces. Seals ensure that internal lubricants do not leak while preventing dust and water from entering the gearbox.
The working principle of High Precision Planetary Gearbox includes:
When power is input to the sun gear, the planet gears around the sun gear rotate. Since the planet gears mesh with both the sun gear and the ring gear, they perform self-rotation on their own axis while revolving around the center of the sun gear along with the planet carrier. In this way, the torque input to the sun gear is amplified by the planet gears and evenly distributed to the planet carrier at the output end.
By adjusting the gear ratio of different components, speed conversion and torque amplification between the input and output can be achieved. Generally, when the number of planet gears increases or the gear ratio increases, the effect of torque amplification becomes more significant, but the output speed decreases at the same time.
In high-precision applications, high precision planetary gearbox adopts preloading technology to reduce or eliminate the clearance between gears, known as "zero/low backlash" design, to ensure accurate position control and minimum mechanical clearance.
An important advantage of the planetary gear mechanism is that it can evenly distribute the load among multiple planet gears, thereby improving the bearing capacity and stability of the entire system, and optimizing dynamic response performance.
The design and selection considerations of High Precision Planetary Gearbox are listed in the following table:
| Design and Selection Considerations | Explanation |
|---|---|
| Load capacity and torque requirements | The gear ratio and gear material should be selected according to the required torque transmission and load capacity. |
| Operating environment and conditions | The gearbox should be carefully chosen for its ability to operate in the required environmental and operational conditions, such as temperature, humidity, and vibration. |
| Accuracy and precision requirements | The accuracy and precision of the gearbox should match the application's requirements, which may require the selection of high-precision bearings or manufacturing processes. |
| Noise and efficiency | The noise and efficiency of the gearbox should be considered when selecting or designing a gearbox. |
The application fields of High Precision Planetary Gearbox are as follows:
We are a professional manufacturer of transmission equipment, specializing in research, production, and sales. Our factory is located in Ningbo, Zhejiang. We strictly operate according to the international quality management system standard ISO90012015, and our products have passed the mandatory CCC certification in China and the CE certification of the European Union. Our products are produced according to international IC standards and have reached the advanced level of similar products in the international market.
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