Exposure to high shear conditions does not have a significant effect on the viscosity of regular lubricating oils. For greases and high-viscosity lubricants, however, high shear rates can cause a remarkable decrease in viscosity

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The effect of pressure on the viscosity of fluids is often overlooked because changes in pressure almost always come with temperature changes. However, the effect of pressure on viscosity can be independent of temperature. Typically, an increase in pressure increases the fluid viscosity.

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While most estimates suggest wheel bearings should last between 75,000 and 150,000 miles, the actual lifespan depends on:

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If you notice signs of a bad wheel bearing, visit your nearest Meineke location. Once you bring your vehicle to us, we’ll perform a thorough diagnosis to honestly determine if a replacement is necessary.

Inherent properties include the fluid type, composition, additives, etc. that can influence viscosity. In lubricants, the type of base oil determines the viscosity of the product. This viscosity can further change according to the other ingredients and additives mixed into this base oil. Special additives such as viscosity index improvers can add stability to lubricants, which helps them maintain their viscosity with changes in temperature, pressure, etc.

There’s no doubt that viscosity is a critical topic when it comes to lubricating oils. We have even written several posts about this topic, which you can find here. In this post, you’ll read all the essential information on high viscosity and its importance in lubricating oils and maintenance management.

Regular lubricating oils and greases react differently to pressure. Lubricating oils flow more freely with increasing pressure while greases only change in viscosity once a certain pressure is reached.

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Shear rate is the measure of how fast a fluid is being deformed. A fluid is said to have reached ‘shear’ when it permanently loses its viscosity. A lubricant’s resistance to loss of viscosity due to deformation is called its shear stability.

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The amount of miles your vehicle can endure will depend on how extensive the damage is and the conditions on the road. If you’re concerned about replacement costs, note that the average estimate for a replacement is about $350 for each bearing.

High-viscosity lubricants are inherently stable against temperature changes. Drastic temperature changes are often experienced by heavy-duty machines operating in cold climates. Applications such as these can benefit greatly from using high-viscosity lubricants because they provide effective lubrication at a wide range of temperatures.

And the valuable insights from lubrication performance can help you make improvements in selecting your lubricant or optimizing your lubrication process. To learn more about the benefits of Redlist, schedule your free demo with our experts today!

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Heavy-duty engine oils, greases, and gear oils are some common examples of high-viscosity lubricants for these applications. Below are the ways high viscosity is essential to lubrication under heavy-duty applications:

Exposure to contamination can increase or decrease the viscosity of a fluid. If lubricants are exposed to water or dirt, these can react with oil components and result in chemical by-products that thicken the oil. On the other hand, viscosity-stabilizing additives in the lubricant can react with contaminants, promoting drastic viscosity loss at high temperatures.

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If you’re driving on the highway and a wheel breaks off, it’s because a wheel bearing failed. What are the signs of a bad wheel bearing, and what can you do about it? Here, we explore wheel bearings, including what they are, how they work, and how to tell if they’re about to fall off.

In general, viscosity decreases with increasing temperature. At high temperatures, fluid molecules gain more energy, are less bound together, and are more likely to flow. Lubricants available on the market come with temperature-viscosity charts that help users identify the expected viscosity at certain temperatures. Similarly, machines can also come with the manufacturer’s lubricant viscosity recommendations according to certain operating conditions.

Although viscosity is a simple concept on paper, understanding it can be challenging when we consider the factors that can affect it. Viscosity can change according to the following factors:

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Tire balancing is an important component of your routine automotive maintenance schedule. Like changing the oil, balancing the tires is something that vehicle owners are encouraged to do several times throughout the course of the year. This is also something you’ll want to make sure to have done by automotive service professionals. There are […]

The best advice is to head to your nearest auto shop that offers wheel repair and replacement services. If you’re on the road, slow down steadily and avoid turning rapidly. If you drive long distances on a bad wheel bearing, you’ll eventually lose control of the vehicle, and the wheel will stop suddenly.

Keep in mind that wheel bearings are not the same as engine bearings, as there is no constant source of lubrication for wheel bearings. This means they must be tight enough to keep water and road dust out. They also support the entire vehicle weight while driving, so they endure abuse from rough roads and potholes, as well as lateral forces when turning.

High-viscosity lubricants can provide better protection from contaminants. As metal debris, dirt, moisture, etc. are released during operations, a high-viscosity lubricant can collect and trap these better than a low-viscosity one. Thus, contaminants can be removed and prevented from causing damage to the surfaces of machines. High-viscosity lubricants can also be used as sealants to seal off gaps that allow the entry of contaminants into the system.

What works for one machine or process does not always mean it will work on another. Also, using a lubricant that is too viscous can increase energy consumption and introduce too much strain on a machine, shortening its lifespan. Finally, high-viscosity lubricants also come at higher prices and are costly to store and use.

This is where Redlist’s Lubrication Management Software becomes valuable in lubrication. Redlist lets you keep organized files of information on your assets and their relevant lubrication details. Thus, you create a database you can easily reference the next time you are selecting new lubricants to use. It can also let you keep track of lubricant performance in a more detailed and accurate way.

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Let’s start by defining viscosity. Viscosity is simply how thick or thin a flowing material is. In technical terms, viscosity is a fluid’s resistance to flow. A fluid with high viscosity has high resistance to flow, making it appear thick or less flowy. A fluid with low viscosity is the opposite. To illustrate, honey would be a high-viscosity substance and water would be a low-viscosity substance.

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A wheel bearing is a set of steel balls held together in a metal ring called a race. The race is located inside the hub, and each wheel has one. At the center of the wheel is a hollow piece of metal called a hub. The wheel bearings fit tightly inside this hub and ride on a metal axle shaft, helping reduce friction when the wheel spins.

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The many benefits of high-viscosity lubricants do not come without some challenges. For one, the use of high-viscosity lubricants does not guarantee success in heavy-duty applications. Your operating conditions, specific lubricant composition, lubrication practices, and other factors can reduce the lubricating effect of high-viscosity lubricants. Furthermore, there is no one high-viscosity lubricant that is ideal for all applications.

The use of a high-viscosity lubricant results in a thick and stable protective film between surfaces. In turn, this increases the load-bearing capacity of the machine. This means that the more viscous and stable the lubricant, the more operational load the machine can carry and support.

The viscosity of the lubricant should be high enough to form a protective film between surfaces. This protective boundary must be maintained during operations to reduce the friction between said surfaces. Reduced friction means less wear and tear and less heat, which can reduce viscosity.

You already know your car cannot function safely without sturdy and properly fit wheels. A wheel is complex, and several components must be integrated for it to function safely—including the bearings.

Now you know what affects viscosity, let’s discuss high-viscosity lubricating oils. What are they, and how do they work? High viscosity in a lubricant is desirable when the application is:

The use of lubricating oils, whether of low or high viscosity, should be one part informed selection and the other part, trial-and-error. Under informed selection, you review the lubricant properties, consider the manufacturers’ recommendations, evaluate your unique requirements and processes, and from these select the lubricants to use. The lubricants you select should then be subjected to trial-and-error, where you use them and monitor their performance. And then, from these results, improve your lubrication process or replace your lubricants.

If you want to know how to check for a bad wheel bearing, place your car on a jack stand, grip your hands on the 6 and 12 o’clock positions of the tire, and then spin the wheel to see if it wiggles. It’s also a great way to learn how to tell which wheel bearing is bad.