Hey there! As a supplier of helical gearboxes, I’ve been in the business long enough to know that while these things are pretty awesome, they ain’t without their drawbacks. Let’s dive into what those might be. Helical Gearbox
Higher Manufacturing Cost
One of the first disadvantages of helical gearboxes I’ve noticed is the cost of making ’em. Unlike spur gearboxes, which are a lot simpler in design, helical gears have teeth that are cut at an angle. This angled design makes the manufacturing process way more complex. You need specialized machinery to cut those helical teeth accurately, and that machinery ain’t cheap. Plus, the setup time for these machines is longer, and there’s a higher chance of errors during the manufacturing process. All these factors add up, and as a result, the cost of producing a helical gearbox is significantly higher compared to other types of gearboxes.
This higher manufacturing cost, of course, gets passed on to the customer. So, if you’re on a tight budget and looking for a basic gearbox, a helical gearbox might not be the most cost – effective option for you. I’ve had customers come to me, looking for a quick and inexpensive solution, and when I had to show them the price tag of a helical gearbox, they were a bit taken aback.
Axial Thrust
Another biggie is axial thrust. Because the teeth of helical gears are cut at an angle, when the gears are in operation, they generate an axial force. This axial thrust can be a real pain in the neck. It puts extra stress on the bearings and shafts in the gearbox. Over time, this extra stress can lead to wear and tear on these components, reducing their lifespan.
To deal with this axial thrust, you need to use special bearings that can handle the additional load. These bearings are more expensive than regular ones, and they also need more maintenance. I’ve seen cases where customers didn’t account for the axial thrust properly, and they ended up having to replace the bearings much earlier than expected. It’s not just the cost of the new bearings; there’s also the cost of labor to replace them and the downtime of the equipment.
Noise at High Speeds
Helical gearboxes are generally quieter than spur gearboxes at low to medium speeds. But when you start pushing them to high speeds, things can get a bit noisy. The angled teeth of the helical gears can cause vibrations as they mesh together at high velocities. These vibrations then translate into noise.
This noise can be a real problem in certain applications. For example, if you’re using the gearbox in a quiet environment like a laboratory or a recording studio, the noise can be a major distraction. Even in industrial settings, excessive noise can be a safety hazard, as it can make it difficult for workers to communicate and hear warning signals.
I’ve had customers who were using helical gearboxes in high – speed applications and were complaining about the noise. We had to work with them to find solutions, like adding noise – dampening materials or changing the operating conditions to reduce the speed.
Lubrication Requirements
Helical gearboxes have pretty strict lubrication requirements. The angled teeth need a good amount of lubrication to reduce friction and wear. The lubricant also helps to dissipate heat generated during operation. If the gearbox isn’t properly lubricated, the teeth can start to wear out quickly, and the efficiency of the gearbox can drop.
The type of lubricant you use also matters. You can’t just use any old oil; it has to be a high – quality lubricant that’s specifically designed for helical gearboxes. And you need to change the lubricant regularly. I’ve seen customers who skimped on the lubrication, either using a low – quality lubricant or not changing it often enough. Their gearboxes started having problems pretty quickly, like increased noise, reduced efficiency, and ultimately, premature failure.
Installation Complexity
Installing a helical gearbox is not as straightforward as some other types of gearboxes. Due to the axial thrust and the need for precise alignment, you need to be really careful during the installation process. The gearbox has to be installed exactly in the right position and orientation. If it’s not installed correctly, it can lead to uneven wear on the gears, increased noise, and a shorter lifespan for the gearbox.
This installation complexity means that you often need a professional to do the job. Hiring a professional installer adds to the overall cost of getting the gearbox up and running. I’ve had customers who tried to install the gearbox themselves to save money, but then they ended up having to call me in to fix the problems they created.
Limited Torque Capacity in Small Sizes
If you’re looking for a small – sized helical gearbox with a high torque capacity, you might be out of luck. Smaller helical gearboxes have limitations when it comes to how much torque they can handle. The size of the gears and the materials used in the construction of the gearbox restrict the amount of torque that can be transmitted.
This can be a problem in applications where you need a compact gearbox but also require a high torque output. For example, in some small – scale manufacturing equipment or robotics applications, space is limited, but you still need a gearbox that can handle a decent amount of torque. In these cases, a small helical gearbox might not be the best choice.
Sensitivity to Misalignment
Helical gearboxes are very sensitive to misalignment. Even a small amount of misalignment can cause a big difference in the performance of the gearbox. Misalignment can lead to uneven loading on the gears, which can cause premature wear and failure.
Detecting and correcting misalignment can be a challenge. You need specialized equipment to measure the alignment accurately, and then you need to make the necessary adjustments. This can be time – consuming and costly. I’ve had customers who didn’t realize that misalignment was the cause of their gearbox problems, and they kept replacing parts without fixing the underlying issue.
Despite all these disadvantages, helical gearboxes still have a lot going for them. They offer high efficiency, smooth operation, and can handle high loads. If you’re in the market for a gearbox, and you think a helical gearbox might be the right fit for your application, don’t let these disadvantages scare you off completely.
DC Brush Square Gear Motor If you’re interested in learning more about helical gearboxes or want to discuss whether they’re suitable for your specific needs, feel free to reach out. We can have a chat about your requirements and see how we can help you make the best decision. Whether it’s dealing with the challenges I’ve mentioned or finding the right gearbox for your budget and application, I’m here to assist.
References
- "Gear Design and Application Handbook"
- "Mechanical Power Transmission: Principles and Applications"
- "Industrial Gearbox Handbook"
Hangzhou ANG Drive Co., Ltd.
As one of the most professional helical gearbox manufacturers and suppliers in China, we’re featured by quality products and good service. Please rest assured to wholesale custom made helical gearbox from our factory. Good service and quality products are available.
Address: No.185, Jincheng Rd., Hangzhou 311202, China
E-mail: export2@angdrive.com
WebSite: https://www.anjodrive.com/
