Rokee® Customized Large Gear Coupling Export for Customers, Rokee® is a well-known high-quality supplier of couplings and technical services in China.
As a key component in mechanical transmission systems, gear couplings play a crucial role in modern industrial fields. Gear coupling is a mechanical connection device that achieves power transmission through gear meshing, and belongs to a type of movable rigid coupling. Its core design concept is to utilize the precise meshing of internal and external teeth to effectively transmit the rotational motion and torque of the driving shaft to the driven shaft, while also possessing a certain degree of deviation compensation capability.
In terms of structural composition, standard gear couplings are mainly composed of the following key components: internal ring gear (usually a ring gear structure), flange half coupling with external teeth (external shaft sleeve), connecting bolts, and sealing end caps and other accessories. The shape and arrangement of these components may vary according to different design requirements. Small gear couplings usually adopt an integral design, integrating the end cap with the inner gear ring to reduce the number of parts and assembly complexity; Large or special-purpose couplings often adopt a separated structure, which is convenient for manufacturing, installation, and maintenance.
The working principle is based on the basic principle of gear meshing: when the driving shaft rotates, it drives the external gear shaft sleeve connected to it to rotate. Through the meshing effect between the external teeth and the internal gear ring, the torque is transmitted to the internal gear ring, which then drives the driven shaft to rotate. During this process, the relative motion between the inner and outer teeth allows for a certain degree of axial deviation, including axial displacement, radial displacement, and angular deflection. This characteristic enables the toothed coupling to adapt to installation errors that are difficult to avoid in practical engineering and shaft deformation during operation.
In terms of performance characteristics, gear couplings have several significant advantages: firstly, compared to other types of couplings, gear couplings can transmit greater torque at the same radial size, making them particularly suitable for applications with limited space; Secondly, by optimizing the tooth profile design (such as drum teeth), its ability to compensate for axis deviation can be significantly improved; Furthermore, high-precision manufactured gear couplings can adapt to a wide range of working conditions, from low-speed heavy loads to high-speed precision transmissions.
It is worth noting that during the operation of the toothed coupling, due to the possible relative displacement between the two shafts, the tooth surfaces of the inner and outer teeth will periodically slide axially, which will inevitably lead to tooth surface wear and certain power loss. Therefore, the good condition of lubrication and sealing is crucial for the performance and service life guarantee of gear couplings. Modern gear couplings are usually designed with a complete lubrication system and sealing device, and some heavy-duty applications even use forced circulation oil lubrication to ensure that the tooth surface always maintains a good lubrication state.
Over the years, with excellent quality, we have been continuously providing many coupling products of various categories and uses complying with multiple standards and a full range of services, from the product selection to final installation and operation, for the industry fields of ferrous metallurgy, nuclear power, gas turbine, wind power, ropeway construction, lifting transportation, general equipment, etc. We strictly comply with quality system requirements and implement the whole process control to become a reliable and trustworthy partner of customers.
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