Luoyang Yujie Industry&Trade Co., Ltd is one of the most experienced manufacturers and suppliers of large gear wheel in China. Please feel free to buy cheap large gear wheel for sale here from our factory. All customized products are with high quality and competitive price.
Products Description
A large gear wheel, also known simply as a large gear or gearwheel, is a mechanical component that plays a crucial role in many machines and mechanisms. Gears are toothed wheels that mesh with one another to transmit motion and power from one rotating shaft to another. Large gear wheels come in various types, including spur gears, helical gears, bevel gears, and worm gears, each with its own specific design and applications. They are essential components in a wide range of mechanical systems, enabling the controlled and efficient transfer of power and motion.
features of large gear wheel
Teeth: Large gear wheels have teeth around their circumference. The shape and size of these teeth vary depending on the type of gear and its intended application.
Diameter: Large gears are characterized by their relatively large diameter compared to other gears in a system.
Material: They are typically made of durable materials like steel, brass, or plastic, depending on the application and load requirements.
Precision: Precision machining and manufacturing are essential to ensure the teeth mesh properly, minimizing friction and wear.
functions of largr gear wheel
Speed Reduction/Increase: Large gear wheels can be used to either reduce or increase the speed of rotation between two connected shafts. When a smaller gear meshes with a larger gear, it results in speed reduction, while the opposite leads to speed increase.
Torque Transfer: Gears transfer torque from one shaft to another. When force is applied to one gear, it causes the other gear(s) in the system to rotate, allowing power to be transmitted.
Direction Change: Gears can change the direction of rotation. For example, a pair of bevel gears can change the direction of motion from horizontal to vertical or vice versa.
Maintaining Constant Speed: In some applications, gears are used to maintain a constant speed ratio between two shafts, ensuring a consistent output regardless of variations in input speed.
material of large gear wheel
Common materials for industrial large gear wheels include: carburizing steel such as 20CrMnTi, which has a hard surface and tough core after carburizing and quenching; quenched and tempered steel such as 42CrMo, which has good comprehensive mechanical properties after quenching and tempering; cast iron such as ductile iron, which has low cost and good wear resistance; and copper alloys, which are used for corrosion resistance and friction reduction, as well as powder metallurgy materials, which are suitable for mass production.
process of large gear wheel
Gear blank processing:
Turning or milling the gear blank to process the reference surfaces such as the shaft hole and the end face to ensure coaxiality and verticality, laying the foundation for subsequent tooth processing.
Tooth processing:
Gear hobbing/gear shaping: Cutting with a hob or gear shaping cutter is suitable for spur and helical gears, with high efficiency and medium accuracy (8-7 levels).
Gear milling: Processing with a forming milling cutter is suitable for single-piece small batch or low-precision gears.
Gear grinding: Grinding high-precision gears (above level 6) eliminates heat treatment deformation and improves tooth surface finish and accuracy.
Heat treatment:
Carburized steel (such as 20CrMnTi) needs carburizing and quenching to improve the hardness of the tooth surface (HRC58-62); quenched and tempered steel (such as 42CrMo) is quenched and tempered to optimize the comprehensive mechanical properties.
Surface treatment:
Hard chrome plating, nitriding and other processes enhance wear resistance, or shot peening improves fatigue resistance.
Inspection process of large gear wheel
Dimension and geometric tolerance:
Use a three-coordinate measuring instrument or CNC machine tool to detect the diameter of the tooth top circle, the diameter of the tooth root circle, the coaxiality of the shaft hole, the end face runout, etc. to ensure that it meets the design requirements.
Tooth shape and tooth direction accuracy:
Use a gear measuring center or a hob inspection instrument to measure the tooth profile deviation and helix deviation to ensure meshing stability.
Hardness detection:
The Rockwell hardness tester detects the hardness of the tooth surface, and the ultrasonic thickness gauge assists in confirming the depth of the carburized layer.
Non-destructive testing:
Magnetic particle or ultrasonic testing is used to check whether there are cracks, slag inclusions and other defects on the tooth surface and inside to ensure safe operation.
applications of large gear wheel
Automotive Industry: Large gears are used in transmissions to enable speed and torque adjustments in vehicles. They are also found in differential gears and various engine components.
Industrial Machinery: Large gears are common in heavy machinery such as cranes, excavators, and conveyor systems, where they help transfer power and control the motion of heavy loads.
Wind Turbines: Large gears are essential components in wind turbines, where they convert the slow rotational speed of the turbine blades into high-speed rotation for electricity generation.
Marine Applications: In ships and boats, large gears are used in propulsion systems, steering mechanisms, and winches.
Mining Equipment: Mining machinery relies on large gears to power crushers, conveyors, and other equipment used in the extraction and processing of minerals.
Steel Mills: Large gears are critical in steel mills to drive rolling mills and other heavy-duty equipment used in metal production.
Energy Generation: Gears can be found in power generation equipment such as hydroelectric generators, where they transmit power from the water turbine to the generator.
FAQ
Q: Are you trader or factory?
Q: What kind of service can you provide?
Q: Will weld inspection and paint thickness inspection be performed?
A: Yes. We also support third-party testing.
Q: Do you support factory inspection?
A: Anytime
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