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Ball bearing wheel bearings are cheaper to manufacture and maintain than their tapered bearing counterparts. Press-in bearings require the use of a hydraulic press to safely remove and replace them. On most vehicles, such as a Honda Civic or Toyota Camry, specifically for front wheel bearing replacements, the steering knuckle will need to be removed. Removing the knuckle will require wheel alignment afterward. Due to the need for a hydraulic press, the need for wheel alignment, and the depth of the repair, most people opt to let the pros handle it. There are options such as removing the steering knuckle at home and taking the assembly into a shop and having them press the old bearing out and the new bearing in. When it comes to press-in bearings, a replacement wheel hub will be the most expensive part. Aftermarket parts such as NAPA offer full assemblies for replacement. This may be the better option, depending on how rusty or worn your vehicle is.

Tapered roller bearings are serviceable, which means they can be removed, cleaned, and repacked with grease to prolong their life. Aside from lasting longer, serviceable bearings are cheaper to replace. However, over a lifetime of service, it may add up to maintenance services/costs. Unfortunately, the majority of vehicle manufacturers do not offer serviceable bearings anymore. Years ago, the Ford F-150 and Toyota Land Cruiser used this style of bearing. The biggest drawback of tapered roller bearings is improper maintenance. Overloaded or improperly pre-loaded bearings wear prematurely. Improper grease packing is another issue when it comes to maintenance.

Worn wheel bearings shouldn't be ignored. The cost of a wheel bearing replacement in front or at the back is a small price to pay for reducing the safety hazards that come with this component wearing out.

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The most telling sign of an imminent failure is excessive vibration. Most monitoring systems measure vibration. While this method is sufficient for most industrial equipment, there are other variables that can be used. Temperature readings can indicate overheating. Sound detection can listen for grinding or shearing which would indicate a need for lubrication. Even stationary equipment can be monitored using machine vision systems. Regardless, every monitoring system relies on the same basic components. What are these essential instruments?

Vision systems are excellent choices for dangerous conditions or remote areas, where sending human crews in is not feasible or cost-effective. Renewable energy facilities, such as solar farms and wind farms, have started using drones to visually monitor their equipment due to the large areas and long distances involved. Offshore rigs can use marine drones to visually inspect subsea infrastructure. While these systems do require more processing power than others, they can be extremely useful.

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ISO Certified for Quality Management Systems in Test and Measurements Solutions, Special Engineering Systems for Aerospace and Defense, University Labs, Research and Development, and Renewable Energy Systems including solar installations.

Every monitoring system has three basic elements. First, there is an input device such as a sensor that detects changes and outputs its observations as raw data. A data collection system retrieves data from a sensor, or multiple sensors, and organizes the data for further analysis. The final essential instrument is a powerful processing unit running analytics software that can output useful insights based on the patterns it identifies in the data.

Long-range wireless transmission is also possible. With GSM modules, you can use an available cellular network to send sensor data over long distances. Mesh Wi-Fi networks can also be used in large facilities. The goal is to get your data to a server where it can be processed either by on-site processing units or cloud compute units.

You can analyze the data that comes from your sensors in-house or outsource this work to cloud computing providers. Cloud computing has become more affordable and can process your data quickly. This method is preferable to using your own hardware if you haven’t yet installed a condition monitoring system. By using the cloud, you don’t have to invest in expensive processing power that will otherwise not be used.

Temperature sensors are useful when operating in extreme conditions or for machines that operate under heavy loads for extended periods of time. Likewise, if your processes require a very specific operating temperature, monitoring this variable becomes essential. Some temperature sensors work on contact, while others can use infrared imaging or lasers to produce a reliable reading.

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The type of sensor you choose will depend on the type of motion the machine produces. A sensor that must be mounted directly to a moving part would be ideal for a machine that performs a repeated linear motion. Wired sensors would not be suitable for rotary motion, for obvious reasons. In these cases, laser-based sensors can allow for vibration monitoring on a rotating piece of equipment without wiring problems.

How much is it to fix or replace a wheel bearing? That depends on the make/model of your car as well as the type of bearing. RepairPal estimates a wheel bearing replacement will cost you between $300 and $400. This estimate can be accurate for most vehicles. However, if we look at the pricing for the popular Toyota Tacoma, the price jumps as high as $740. Using a whole knuckle assembly from NAPA or other parts suppliers will cost between $250 and $500, plus labor. Like most repairs, if you do them yourself, you can save some money. However, when it comes to serviceable bearings and press-in bearings, we recommend you let the pros handle the repair, especially if you live in the rust belt.

You can install multiple kinds of sensors on a machine to measure more than one variable or to add redundancy if you are concerned about a sensor failing. More expensive sensors will have tighter tolerances, which may be necessary for measuring fine deviations. Others can be more resistant to environmental hazards, including extreme pressures or temperatures. Consider some of the kinds of sensors available on the market today.

Data analytics software can detect patterns in the data to shed insights on your machines’ condition. You can also input your own parameters for each kind of machine and sensor so that, when an out-of-spec reading occurs, the system will alert your engineering team. You can even program this system to take action on its own!

Be sure to find temperature sensors that can tolerate higher or lower temperatures than what you need to measure. As sensors approach the extremes of their maximum range, they can become less accurate. By giving yourself some overhead, you ensure reliable results and will avoid damaging the sensor.

These are by far the easiest bearings to work with, as long as you do not live in the rust belt. Issues that arise from bolt-in bearings are bi-metal corrosion and cost. If your vehicle is equipped with an aluminum steering knuckle, expect a fight when removing the steel bearing. This mostly applies to states that suffer from increased levels of vehicle corrosion and rust due to the climate. Since replacement parts come as an assembly, the cost can be higher when compared to a press-in or tapered roller bearing. Vehicles such as the Jeep Wrangler will use these bearings on the front axle and vehicles such as the Toyota RAV4 will use these in the rear.

Sensors are the foundation upon which your monitoring system is built. There are a wide variety of sensors for all kinds of applications. You’ll need to choose sensors that allow you to measure the correct variables without interfering with the machine’s operation. Fortunately, sensors have shrunk considerably and can even transmit data wirelessly in some cases, making them easy to install.

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Overall, the system is analogous to the human body. We are wired with nerve endings that can detect pressure, temperature, and a host of other inputs. The nervous system routes this data to your brain, which then analyzes it and makes decisions based on the inputs. Your monitoring system will work in much the same way. For reliable results, you need to have good data capture, so let’s start with sensors.

Wheel bearings can exhibit growling/howling noises and show no signs of play or wear, other than excessive noise. To diagnose these, you’ll need to drive the vehicle at various speeds in turns. A left front-wheel bearing that is worn may only make noise during left turns or right turns.

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We highly recommend you avoid driving with a worn wheel bearing. Wheel bearings can become so worn that the hub can fall out of the bearing, causing the wheel to detach from the vehicle. This is a serious scenario that you’ll want to avoid at all costs. Additionally, a worn wheel bearing will reduce the vehicle’s handling and braking abilities. If your wheel bearing is only making noise and does not exhibit any wheel play when inspected, you may have some time before you absolutely need to replace the bearing. However, if the wheel has excessive play due to a worn bearing, you’ll want to get it fixed immediately.

Wheel bearings provide a mounting point for the wheels and allow the wheels to spin. Wheel bearings are either a tapered rolling bearing design or a ball bearing design. Ball bearing designs are either press-in or bolt-in. Let's take a look at each bearing design in more detail.

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ISO Certified for Quality Management Systems in Test and Measurements Solutions, Special Engineering Systems for Aerospace and Defense, University Labs, Research and Development, and Renewable Energy Systems including solar installations.

By far, the most common application for sensors is to measure vibration. Vibration is one of the most reliable indicators of imminent machine failure. As a result, there are several ways to monitor vibration. Piezoelectric sensors produce an output when pressure is applied. Gyroscopic sensors can detect acceleration in multiple directions. Laser-based sensors can measure the time it takes for light to be reflected, which will fluctuate when a machine vibrates.

A monitoring system’s purpose is to observe a machine and determine if it is working optimally. If its condition has deteriorated, it must be able to detect this and take action. So, to monitor conditions, we must monitor signs of deviation from the norm. In the same way your physician monitors your condition by checking for things that aren’t in line with what is normal for your age and sex, machine monitoring looks for symptoms of problems that fall outside the expected parameters of operation.

While some modern machines have monitoring components built in, you don’t need to upgrade your factory floor. You can retrofit older machines with specialized instruments at a fraction of the price. An investment in condition monitoring technology yields significant returns due to the relatively low initial expense and massive potential for long-term savings. So, what do you need to make it possible? Let’s look at the most important instruments in a monitoring system.

If you notice growling or clunking noises, vibrations, abnormal tire wear, or excessive steering wheel play, your car may have one or more worn wheel bearings. Wheel bearings are what make our wheels go round, literally. Despite their simple design and purpose, wheel bearing replacements can be costly. The type of wheel bearing used is entirely dependent on the manufacturer, and you may pay more for a repair on a luxury vehicle. When it comes to replacing bearings, you can do this repair yourself on certain vehicles, while for others, you may need to recruit the help of the pros. In this article, we are going to cover what a wheel bearing is, how it works, the different design types, symptoms of a worn wheel bearing, how to check your car for a worn bearing, and how much it costs to replace a wheel bearing.

You can even give your monitoring system a set of eyes to visually inspect items or equipment and identify faults. Sensors can trigger cameras, which will produce a sequence of static images and output these images to a GPU or TPU for processing. Combined with software, you can detect machines that are out of position, products that have manufacturing defects, or damaged packages, just to name a few examples.

If the wheel bearing is worn, you will feel a popping as you move the wheel. Additional methods for inspecting wheel bearings include using chassis ears, a stethoscope, and a dial indicator (to measure the exact amount of wear).

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Wired sensors can be connected to transponders mounted on or near a machine. These transponders can then beam their data wirelessly, or via additional cables, to a central processing unit that organizes data into tables and sends it to a server for processing. This is the typical method for a factory floor, where a web of wires would not be ideal, but distances between machines are small enough to allow for low-power data transmission using Bluetooth or specialized Wi-Fi protocols.

If you have yet to set up a system to monitor your machines’ condition, it’s time. Contact SAAB RDS to schedule a meeting and learn how we can help you outfit your operations with the best in monitoring technology.

Sonic sensors detect sound frequencies and can be very useful for a variety of applications. They can detect vibration provided they are isolated from other machines’ vibrations or mechanical noises. They can also spot deteriorating lubrication, as components will produce grinding sounds as lubrication breaks down. For best results, an array of microphones can be placed around a machine. Their results will be compared to ensure a reliable output.

Checking wheel bearings for wear is easy and only requires the vehicle or wheel to be suspended. Follow these steps to check the wheel bearing on your car:

All of the data from your sensors is meaningless without analysis. For analysis to be possible, data must be curated and organized. Your sensors must feed their data into a collection and transmission system. There are several solutions available, depending on the kind of application you have in mind and the physical limitations involved.