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Corrosion-Proof Gear Coupling with PTFE Coating – Ideal for Marine, Oil & Gas Applications1
Power Transmission Parts, Oil & Gas Applications, Coupling, Gear Coupling
Shandong Nuodis Mechanical Equipment Co., Ltd.
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Product Description Corrosion-Proof Gear Coupling with PTFE Coating - Ideal for Marine, Oil & Gas ApplicationsDetailed Photos Product AdvantagesHigh Torque TransmissionGear couplings excel in transferring high torque loads efficiently, making them ideal for heavy-duty industrial applications like steel mills or mining equipment.Accommodates MisalignmentThey compensate for axial, angular, and parallel shaft misalignments, ensuring smooth operation even in imperfectly aligned systems.Durability in Harsh ConditionsConstructed from robust materials (e.g., alloy steel) and often sealed against contaminants, they withstand extreme temperatures, dust, and moisture.Low MaintenanceAdvanced lubrication systems (e.g., grease-filled or sealed designs) reduce the need for frequent servicing, lowering downtime.High-Speed CapabilityPrecision-engineered gear teeth and dynamic balancing allow stable performance at high rotational speeds without vibration issues.Compact and Space-EfficientTheir design offers a high power-to-size ratio, saving space in machinery layouts compared to bulkier coupling types.Long Service LifeHardened gear surfaces and wear-resistant materials minimize degradation, ensuring reliability over extended periods. PRODUCT DETAILSGEAR COUPLINGThe gear couplings are employed to mechanically connect two rotating shafts which have to transmit a torque in a torsionally rigid way. The torque is transmitted from hub to sleeve and vice versa by the working gear teeth, and between the connecting flanges of the two hubs by the set bolts. The gear couplings are flexible to compensate for the misalignment of the shafts that need to be connected. They compensate for both the initial misalignment (support clearances, dimensional and geometrical tolerances of the equipment, alignment imperfections) and further alignment modifications (settling and support wear) and/or temperature (expansion). The gear couplings are flexible because their working gear teeth must be able to float and slide, in order to compensatefor misalignments. Floating is performed by engaging outer spherical gear teeth with inner cylindrical ones, both having proper tangential clearance. The outer spherical gear teeth, olive-shaped tangential section, and "Semitopping" on the head, enable the gear hubs to float on their central axis, thus allowing their axial slide and the continuous lube flow while avoiding any harmful stress concentration on the gear teeth. The gear teeth center on their external diameters, with proper radial clearance, so that the rotating masses do not generate any vibration when operating at low speed and transmitting torque. When the speed and/or the torque get higher, the gear teeth center on their working flanks, so distributing the load on all the teeth. We recommend performing a dynamic balancing of the rotating masses - grade, and requirements to be specified in case of high rotation speed or when equipment having supports sensitive to mass imbalance are involved. A single engagement of gear teeth (half-coupling) can compensate for both angular and axial misalignments; two engagements of gear teeth (complete coupling) are required to compensate also the parallel misalignments. Please remember that angular, parallel, axial, and combined misalignments, maximum speed rotation, and transmitted torques must be in accordance with the requirements of every kind of coupling, to avoid excessive or early wear. Maintenance and lubrication have to be careful and precise. Please strictly follow our INSTALLATION, USE & MAINTENANCE INSTRUCTIONS. Gear couplings are obtained from forged steel ingots, machined, and heat treated. Gear couplings can be made of different types of steel, such as AISI 1045, AISI 4140, and Nitralloy N/135/135M which are hardened and tempered before being machined. To increase the load capacity, in some types of couplings, the gear teeth can be surface-hardened after machining by thermal or thermochemical treatments and, when required, they can be ground. The main treatments are induction tempering, nitroxidation, and gas nitriding. It is also possible to perform antioxidant and anticorrosive treatments in the end stage.We can perform a nitroxidation (N.O.) treatment on our standard GO-A gear couplings made of AISI 1045 when required.Besides limiting surface corrosion, this treatment improves surface hardness and wear resistance and increases workinggear teeth' lifetime even in the presence of high misalignments and rotation speeds. Unless otherwise required, our gear couplings are properly packaged, according to their dimensions, weight, required type of transport, and storage. To prevent oxidation, the interface surfaces or the surfaces that have to be submitted to assembly operations are usually protected by a wax film of TECTYL 506 EH. The raw (semifinished) and wide surfaces of spacer tubes are painted, after sandblasting, by one primer acrylic coat and two final epoxy coats; this kind of painting can resist temperatures up to 100-120°C. Different types of coatings can be applied on demand. The torque a gear coupling can transmit as well as its maximum operating speed change according to the total misalignment between the shafts to be connected (see diagrams of speed factor Kv and of load factor Ki.The gear couplings must be selected according to the operational data (load and speed), the application, the nominal and max load capacities, the nominal speed, the static and dynamic misalignments, and the max admitted bore. Product Parameters Company ProfileShandong NDS Mechanical Equipment Co., Ltd. is a comprehensive machinery manufacturing enterprise that integrates R&D, production, sales, and service. Headquartered in Boshan District, Zibo City, Shandong Province, it has branch offices in Henan and Shenyang. The company's leader, with 15 years of experience in mechanical manufacturing, personally leads the team in production optimization and market expansion, accurately grasping customer needs and continuously promoting product technology upgrades. Since its establishment, the company has established long-term business partnerships with numerous manufacturers, We consistently prioritize customer needs, striving to meet their demands and drive product technology upgrades.The company boasts modern production workshops and advanced equipment. We focus on the machinery manufacturing field and are dedicated to providing high-quality products to our customers. Our main products include pulleys, couplings, synchronous pulleys, gears, racks, sprockets, clamping sleeves, bearing housings, worm gears, and other transmission components, as well as mechanical and electrical equipment, and mechanical parts and components, These products are widely used in various industries, including automobile manufacturing, CNC machine tools, metallurgy, mining machinery, agricultural machinery, power generation, chemical industry, wind power, and petroleum.FAQQ1: Do you provide samples? ls it free or extra?A: Yes, we provide samples free of charge, though the cost of freight is not included.Q2: Do you provide OEM order service?A: Yes, we provide ODM&OEM services to customers around the world, and we can customize different brands and different sizes of packaging boxes according to customers' requirements.Q3: Do you have your own factory?A: Yes, we specialized in mechanical parts manufacturing for 15 years.Q4: How long is your delivery time?A: The standard parts are expected to be shipped in about 10 days, while then-standard custom parts are expected to be shipped in about 30 days. The delivery times vary depending on the specific product.Q5: What are your packing conditions?A: We use standardized export packaging.
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