2 pcs used Mekanord marine gearbox 235HSC-U ratio 2.04:1 for sale
|PRODUCT NAME||NO. OF CYLINDERS||BORE X STROKE: MM||CONT. RATING OUTPUT: KW(MHP)/RPM||DRY WEIGHT: KG||DIMENSIONS: L X W X H: MM||QUANTITY|
|6N21A-SV||6||210 x 290||883 (1200) / 850||8000||3674 x 1524 x 2452|
|6N21A-SW||6||210 x 290||8000|
|6N21A-UV||6||210 x 290||736 (1000) / 800||8000||2674 x 1524 x 2371|
|6N21L-DN||6||210 x 290||615 (836) / 720, 750||7800||3166.5 x 1544 x 2026|
|6N21L-EN||6||210 x 290||800 (1088) / 720, 750||7800||3166.5 x 1544 x 2026|
|6N21L-SN||6||210 x 290||745 (1013) / 720, 750||7800||3166.5 x 1544 x 2026|
|6N21L-UN||6||210 x 290||660 (897) / 720, 750||7800||3166.5 x 1544 x 2026|
|6N260-EN||6||260 x 360||1471 (2000) / 750||15500||5384 x 1490 x 2976|
|6N260-EV||6||260 x 360||1471 (2000) / 750||21300||5384 x 1490 x 2976|
|6N260-GV||6||260 x 360||1545 (2100) / 750||21300||5384 x 1490 x 2976|
|6N260L-EN||6||260 x 360||1324 (1800) / 720, 750||16000||4336 x 1551 x 2719|
|6N260L-SN||6||260 x 360||1214 (1650) / 720, 750||16000||4336 x 1551 x 2719|
|6N260L-UN||6||260 x 360||1103 (1500) / 720, 750||16000||4336 x 1551 x 2719|
|6N260M-EV||6||260 x 360||1471 (2000) / 750||16200||3570 x 1490 x 2648|
|6N260M-GV||6||260 x 360||1545 (2100) / 750||16200||3570 x 1490 x 2648|
|6N260M-SV||6||260 x 360||1324 (1800) / 750||16200||3570 x 1490 x 2648|
|6N260-SN||6||260 x 360||1324 (1800) / 750||15500||5384 x 1490 x 2976|
|6N260-SV||6||260 x 360||1324 (1800) / 750||21300||5384 x 1490 x 2976|
|6N260-UN||6||260 x 360||1177 (1600) / 750||15500||5384 x 1490 x 2976|
|Hardness:||Soft Tooth Surface|
|Installation:||Torque Arm Type|
|Type:||Worm Gear Box|
Can a Worm Gearbox be Used for High-Speed Applications?
Worm gearboxes are generally not recommended for high-speed applications due to their inherent design characteristics. Here’s why:
- Efficiency: Worm gearboxes tend to have lower efficiency compared to other gearbox types, which means they can generate more heat and experience more energy loss at high speeds.
- Heat Generation: The sliding contact between the worm and worm wheel in a worm gearbox can lead to significant friction and heat generation, especially at high speeds. This heat can cause thermal expansion, affecting the gearbox’s performance and longevity.
- Wear and Noise: High speeds can exacerbate wear and noise issues in worm gearboxes. Increased friction and wear can lead to faster degradation of components, resulting in reduced lifespan and increased maintenance needs.
- Backlash: Worm gearboxes may have higher backlash compared to other gearbox types, which can impact precision and accuracy in high-speed applications.
While worm gearboxes are more commonly used in applications requiring high torque and moderate speeds, they may not be the best choice for high-speed scenarios. If high-speed operation is a requirement, other gearbox types such as helical, spur, or planetary gearboxes are often better suited due to their higher efficiency, lower heat generation, and reduced wear at elevated speeds.
Materials Used for Worm Gears
Worm gears are manufactured using a variety of materials to meet different application requirements. Some commonly used materials for worm gears include:
- Steel: Steel is a popular choice for worm gears due to its strength, durability, and wear resistance. It can handle heavy loads and is often used in industrial applications.
- Bronze: Bronze offers good lubricity and is commonly used for the worm gear (worm) component. It provides effective wear resistance and works well in applications where quiet operation is essential.
- Cast Iron: Cast iron is known for its high strength and durability. It’s often used for worm gears in applications where shock loads or heavy-duty conditions are expected.
- Aluminum: Aluminum worm gears are lightweight and corrosion-resistant, making them suitable for applications where weight reduction is important.
- Plastic: Some worm gears are made from plastic materials such as nylon or acetal. These materials are often chosen for their self-lubricating properties and quiet operation.
- Composite Materials: Composite materials can offer a combination of properties, such as lightweight construction and corrosion resistance. They can be suitable for specific applications.
The choice of material depends on factors such as the application’s load, speed, operating environment, and required performance characteristics. It’s important to consider these factors when selecting the appropriate material for worm gears to ensure optimal performance and longevity.
What is a Worm Gearbox and How Does It Work?
A worm gearbox, also known as a worm gear reducer, is a mechanical device used to transmit rotational motion and torque between non-parallel shafts. It consists of a worm screw and a worm wheel, both of which have helical teeth. The worm screw resembles a threaded cylinder, while the worm wheel is a gear with teeth that mesh with the worm screw.
The working principle of a worm gearbox involves the interaction between the worm screw and the worm wheel. When the worm screw is rotated, its helical teeth engage with the teeth of the worm wheel. As the worm screw rotates, it translates the rotational motion into a perpendicular motion, causing the worm wheel to rotate. This perpendicular motion allows the worm gearbox to achieve a high gear reduction ratio, making it suitable for applications that require significant speed reduction.
One of the key features of a worm gearbox is its ability to provide a high gear reduction ratio in a compact design. However, due to the sliding nature of the meshing teeth, worm gearboxes may exhibit higher friction and lower efficiency compared to other types of gearboxes. Therefore, they are often used in applications where efficiency is not the primary concern but where high torque and speed reduction are essential, such as conveyor systems, elevators, automotive steering systems, and certain industrial machinery.
editor by CX 2023-09-22