German ETP coupling ETP model ETP price

ETP couplings utilize their mechanical design to enable continuous rotation of two shafts that are not on the same axis and have an angular misalignment, while reliably transmitting torque and motion. The greatest feature of universal joints is their large angular compensation capability, compact structure, and high transmission efficiency. The angle between the two shaft axes varies with different structural types of universal joints, generally ranging from 5° to 45°.

ETP coupling drive system

Diaphragm coupling shaft drive system: Shaft drives typically connect the driving and driven shafts using one or several diaphragm couplings to form a shaft drive system for transmitting rotation or motion. Diaphragm couplings are primarily used to connect the shafts of electric motors, gearboxes, and working machines. The bore type, connection type, and dimensions depend mainly on the type and size of the connected shafts. During product design, shafts are generally designed according to international standards for cylindrical and conical shaft depths; shaft depth standards pertain to shaft design. For various types of metal diaphragm couplings, during structural and series design, the bore range (maximum and minimum bores) and bore length for each size of metal diaphragm coupling are determined based on the torque to be transmitted, the structure of the diaphragm coupling, and the hub strength. Each size has only one bore length. Abroad, manufacturers of diaphragm couplings specify only one bore length per size in their standards. Due to the misleading influence of GB/T3852, Chinese diaphragm coupling product standards correspond to multiple bore lengths for each size as the bore changes. When converting foreign diaphragm coupling standards into Chinese standards, multiple bore lengths were also added, as if this were necessary for complete conversion.

ETP coupling application range

Widely used for shaft drives in various mechanical devices, such as water pumps (especially high-power and chemical pumps), fans, compressors, hydraulic machinery, petroleum machinery, printing machinery, textile machinery, chemical machinery, mining machinery, metallurgical machinery, aviation (helicopters), high-speed power transmission systems for ships, steam turbines, piston-type power machinery transmission systems, tracked vehicles, and high-speed, high-power mechanical transmission systems for generator sets. After dynamic balancing, application in high-speed shaft drives has become relatively common.

ETP coupling precautions for use

1) Products with diaphragms have sharp edges that may cause injury; it is recommended to wear thick gloves during installation. 2) Please install protective covers or other devices around the coupling to ensure safety. 3) If the shaft misalignment exceeds the permissible value during installation, the coupling may deform, leading to damage or reduced service life. 4) The permissible shaft misalignment for couplings includes radial, angular, and axial deviations. During installation, please adjust to ensure that the shaft misalignment is within the permissible values specified in the corresponding product catalog. 5) When multiple types of misalignment occur simultaneously, the corresponding permissible values should be halved. 6) To extend the service life of the coupling, it is recommended to keep the shaft misalignment within 1/3 of the permissible value. 7) Tighten the screws after inserting the installation shaft; otherwise, the coupling may deform. When tightening screws, please use a torque wrench and do not use screws other than those provided as accessories. 8) If abnormal noises occur during operation, stop immediately and check the installation accuracy, screw looseness, etc. It is recommended to apply adhesive to the outer surface of the screws after installation and debugging to enhance protection.

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