Inside EasternGear: A Step-by-Step Worm Gear Gearbox Assembly

EasternGear, here!

We are pleased to provide an exclusive look into our assembly process, showcasing how our worm gearboxes are meticulously crafted. In this post, we will guide you through the assembly of our flagship product—the Globoid (hourglass-shaped) Worm Gearbox.

The assembly process of our gearbox is meticulously divided into five key stages:

Preparing the gear set (worm shaft + worm wheel)
Securing the worm shaft
Mounting the worm wheel
Assembling the gearbox
Running-in process

Let’s dive in and explore how we set up the worm shaft and worm wheel!

1. Preparing the Gear Set (Worm Shaft + Worm Wheel)

To begin, we fit tapered roller bearings onto the bare worm shaft and wheel, as shown in the image above. This process involves heating the bearings on a specialized grill, much like a BBQ!

By applying heat, the bearings expand, allowing them to slide perfectly onto the worm shaft and wheel. Once cooled, the bearings contract back to their original size, ensuring a precise and secure fit. The specific temperature and timing of this heating process are part of EasternGear's proprietary expertise.

2. Securing the Worm Shaft
Now, we begin the gearbox assembly. Given the size and weight of the components—approximately 50kg or 110 lbs—we use a gantry crane to carefully lift and position the parts.

The round rings attached to the top of the box, known as eye bolts, are used to hook onto the crane for lifting. The specifications of the gearbox may vary depending on the size of the final product, as we customize and tailor our products to meet our customers’ exact needs.

With the bearings in place, the worm shaft is secured and positioned at the bottom of the casing. It’s important to note that the placement of the worm shaft is entirely based on customer specifications. Our globoid-shaped worm shaft, with its distinct curves and three threads, requires extra precision during installation—this is where EasternGear’s expertise truly shines. A specific amount of lubricant is then applied to the shaft to minimize wear and extend the lifespan of the gear set.

3. Mounting the Worm Wheel
With the shaft secured and the gearbox filled with oil, it’s time to position the worm wheel. Though the wheel is quite heavy, our skilled engineers expertly find the optimal position and complete the setup flawlessly.

4. Assembling the Gearbox
After positioning the gear set inside the gearbox, the final step is to assemble the remaining components. Before sealing the assembly, we apply grease to prevent rust and wear.

This step is crucial, especially for parts that operate under high loads and low speeds, ensuring long-lasting lubrication even under varying conditions.

5. Running-in Process
With the gearbox fully assembled, we proceed to the final and arguably most critical step—the running-in process, also known as gearbox conditioning. This involves operating the gearbox under controlled conditions to allow the gears to gradually wear and conform to each other, ensuring smooth surface mating and optimizing the gearbox's performance over its lifespan.
During this process, the fully assembled reducer is connected to a motor with a pulley for a test run. Watch the video below to see the gearbox in action!

Achieving high performance and precision in worm gears is no easy feat, but it’s what sets EasternGear apart. We’re the only company in Korea that offers gear products with “simultaneous surface area contact,” ensuring superior performance compared to ordinary worm gear reducers.

As you can see, assembling a single gearbox requires extensive preparation and time. At EasternGear, we meticulously follow each step, with our team of experts dedicating their efforts to crafting every gearbox with the utmost care and precision.

If you’re interested in business proposals or collaborations related to globoid worm gears, precision worm reducers, or other high-performance worm gears, please contact us through the link below.

Stay tuned for more exciting content from EasternGear!