So, how can we determine the lifespan of oil-less bearings? In today's newsletter, we will delve into understanding the lifespan of oil-less bearings.

The lifespan of oil-less bearings is influenced by various factors such as the material and quality of the product, operating conditions, loads and speeds, and proper maintenance and management.

The appropriate lifespan of oil-less bearings can be defined as the time it takes to reach a point where the cumulative wear, increasing through repetitive friction, exceeds the allowable clearance range between the bearing and the counterpart material, or when a significant rise in friction coefficient due to damage to surface roughness prevents smooth lubrication.

While there are no universally recognized standards or specifications for lifespan and replacement cycles, it is crucial to replace bearings at the right time. Failure to do so may lead to issues like noise or vibrations during operation, or the observation of solid lubricant deterioration.

The lifespan of oil-less bearings is influenced by both intrinsic factors of the bearing itself and environmental factors in the application area.

So, when you ask technical questions about how long a product will last or its warranty period, it's hard to give exact numbers. That's because the conditions needed can be very different depending on how you use it.

But, if you tell us the right testing conditions, we can figure out how long the bearings will last by copying conditions that are a lot like the real-world situation.

We can also compare how well our products work compared to others in similar situations. We're testing oil-less bearings' lifespan using this method.

In this test, we set an arbitrary maximum friction coefficient (typically ranging from 0.2 to 0.25) and conduct the test. We measure the friction coefficient at regular intervals over time, plotting a graph with time on the horizontal axis and the friction coefficient on the vertical axis.

This process helps us confirm the point at which the maximum friction coefficient occurs. By comparing the test results between lubricated and non-lubricated conditions, we can estimate the timing when lubrication may be required.

In this test, we conduct a durability test until the extreme point where issues like noise or vibrations occur, or when it is determined that operation is no longer feasible. This test provides the most accurate method for confirming the product's lifespan beyond the warranty period.

However, it's important to note that this method is not recommended due to the extended time required for testing (several months) and the potential risk of stressing the test equipment. It remains the most accurate but impractical approach for determining the product's lifespan beyond the warranty period.

SGO's oil-less bearings, known for their high durability, have gained recognition not only domestically but also internationally, resulting in the possession of various patents.

Particularly, SGO's proprietary solid lubricant, developed in-house, undergoes heat treatment beyond the curing temperature of the expansion-hardening resin, ensuring that oil-less bearings can contain a significant amount of lubricating oil. This process secures superior porosity and impregnation of lubricating oil compared to other solid lubricants. Additionally, it maintains high compressive strength, enabling stable lubrication performance even in high-pressure environments.

SGO's solid lubricant, crafted with a unique composition ratio of carbon and thermosetting resin powder, expands during heat treatment, firmly attaching itself inside the drill holes of base metal. This feature highlights its robust adherence.

If you are curious about the structure and technology of SGO's oil-less bearings, you can explore more details through the button below.